EP1526329A1 - Reflector for a circular lamp - Google Patents

Reflector for a circular lamp Download PDF

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Publication number
EP1526329A1
EP1526329A1 EP03024290A EP03024290A EP1526329A1 EP 1526329 A1 EP1526329 A1 EP 1526329A1 EP 03024290 A EP03024290 A EP 03024290A EP 03024290 A EP03024290 A EP 03024290A EP 1526329 A1 EP1526329 A1 EP 1526329A1
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EP
European Patent Office
Prior art keywords
reflector
circular lamp
circular
plane
lamp
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Granted
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EP03024290A
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German (de)
French (fr)
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EP1526329B1 (en
Inventor
Jean-Pierre Pizziga
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Individual
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Individual
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Priority to DE60308030T priority Critical patent/DE60308030D1/en
Priority to AT03024290T priority patent/ATE338247T1/en
Priority to EP03024290A priority patent/EP1526329B1/en
Publication of EP1526329A1 publication Critical patent/EP1526329A1/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/0058—Reflectors for light sources adapted to cooperate with light sources of shapes different from point-like or linear, e.g. circular light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
    • F21Y2103/30—Elongate light sources, e.g. fluorescent tubes curved
    • F21Y2103/33—Elongate light sources, e.g. fluorescent tubes curved annular

Definitions

  • the invention relates to luminaires, such as luminaires for indoor lighting or exterior, of surfaces or of premises, for industrial use, commercial, tertiary or private.
  • luminaires comprising a circular lamp, arranged in front of a reflector.
  • Fixtures with fluorescent tube (s) fluorescent (s) rectilinear (s) with two bases, hereinafter referred to as “tube (s) ", are commonly used for a long time especially for lighting premises.
  • These known luminaires usually comprise one or more tubes disposed in the vicinity of the ceiling of the room to be illuminated.
  • the tubes are generally placed in front of a reflector or partially surrounded by the reflector so as to concentrate the luminous flux towards a useful zone (the ground for example) of the local concerned.
  • a luminaire of this type is described in WO-97/43578.
  • the reflector in the form of an inverted V, comprises two profiled or curved wings whose intersection generates a line segment positioned above and in the longitudinal axis of the tube.
  • a constraint related to the use of the tubes is that the technical luminaires designed to direct the light to a useful area must have at least the length of the tube, which can make them bulky.
  • a luminaire wherein the tube is bent to form a lamp tubular circular or toroidal, that is to say having the form of an annular torus.
  • the circular lamp is surrounded by a reflector in the shape of an inverted half-torus. This reflector has the property to reflect the majority incident rays of light reaching it, on an annular surface of the soil, while hiding partially the tube in plain sight in order to respond to particular comfort criteria, forming a zone circular center poorly lit.
  • the invention aims to constitute a set inseparable uniting a compact tube and a reflector of new design, able to provide the luminaire which contains a comparable useful light output the best luminaires for tubes.
  • the invention relates specifically to a reflector designed to optimize the luminous efficiency of a luminaire equipped with a circular lamp, the reflector being characterized in that it comprises a succession of annular facets, each of which has a circular edge in a plane, parallel to the plane of the circular lamp and which are oriented so that the rays of light reflected by them, generated by incident rays of the circular lamp, form with the axis of revolution of said circular lamp, an angle to maximum equal to a predetermined angle, hereinafter referred to as "target angle ", a definition of which will be provided later.
  • useful luminous efficiency of a luminaire means the ratio between the average illuminance level measured on the intended useful plane and the amount of energy required to obtain it.
  • the reflector according to the invention is intended for a circular lamp.
  • the term "circular lamp” refers to a ring of light of circular or similar shape.
  • the luminous crown usually comprises a curved tube forming a torus, that is to say a solid of revolution generated by a circle which rotates about a straight line in its plane, and which does not cut it.
  • the invention is however not limited to bent tubes torus-shaped and applies equally to any type of light corona. It applies in particular to the light crowns formed of a succession of individual sources of light, powered by electrical or non-electrical energy, for example electric light bulbs.
  • the operating mode of the circular lamp is not critical. It can be indifferently incandescent circular lamp, circular lamp arc, a luminescent circular lamp, a lamp circular fluorescent wall, or any source adequate light.
  • the crown of light is circular in shape or assimilated.
  • plane of the lamp designates the geometric plane defined by the circular geometric axis of the circular lamp.
  • axis of revolution of the lamp designates the rectilinear geometric axis passing through the center of the circular lamp, perpendicular to the plane of the circular lamp.
  • discoidal space designates the cylindrical space that fits inside the annular torus constituting the circular lamp.
  • the plane of the lamp circular can be horizontal, vertical or oblique.
  • the circular lamp is usually arranged horizontally in the vicinity of the ceiling of the local and its plane is then substantially horizontal.
  • the invention however also applies to luminaires in which the circular lamp occupies a another position, for example a vertical position or an oblique position. This is particularly the case when fixture is placed on a vertical wall or on a pylon or when used in the manner a source of lighting on a moving machine or when is portable.
  • the " technical reflector" which, associated with the circular lamp, is the subject of the patent has for mission to reflect to a useful area to illuminate, the incident light rays emitted by the circular lamp and reaching it
  • useful area to be illuminated means a surface considered as plane, which is arranged facing the circular lamp and which crosses its axis of revolution.
  • An " incident ray” is, by convention, a rectilinear ray of light, supposed to come from the circular axis of the circular lamp.
  • a " reflected ray” is, by convention, a rectilinear ray of light from the reflector and resulting from an incident ray reaching it.
  • the reflector comprises a succession of annular facets which each have a circular edge in a common plane, parallel to the plane of the circular lamp. Subsequently, this common plane will be designated "plane of the reflector".
  • the aforementioned annular facets are inclined relative to the plane of the reflector, forming frustoconical surfaces. The angle of inclination of these " inclined facets" is calculated according to the direction sought for the rays reflected by them.
  • the inclined facets can be obtained by any suitable means. They can be isolated facets or formed by grooves carved in a plane disk forming the plane of the reflector. Between the inclined facets, the reflector can generally include "flat circular facets ". These are usually located in the plane of the reflector. However, nothing prevents one or more of them being located in another plane, parallel to the plane of the reflector.
  • flatness modification is meant the digging of grooves or the elevation of planes with respect to the plane of the reflector, in order to form the inclined facets.
  • digging and “elevation” are used here for purely pictorial purposes and do not prejudge the method to be used to obtain the results. It is the material retained for the realization of the reflector which determines the means of shaping to use.
  • the specular face or face facing the circular lamp thus sees its flatness modified by grooves or concentric growths, whenever the angle of attack of an incident ray must be modified to generate a reflected ray inside the circular lamp. the target angle (a definition of which will be provided later), as well as in inter-reflections situations so as to make the reflected rays useful.
  • the facets of the reflector according to the invention are made of a material capable of reflecting the electromagnetic radiation of the visible spectrum. It is generally made of a material whose finish specular has a great reflective power.
  • the shape original reflector is that of a disc whose plane is parallel to the plane of the circular lamp.
  • target angle which is the angle defined by the ridge (or apothema) and the axis (or height) of this cone, is the angle between which the maximum of the reflected rays deflected by the technical reflector.
  • the distance separating plane of the reflector of the plane of the circular lamp is ponderedly known.
  • the mode of construction of the luminaire and the accessories used are part of the elements that the determine.
  • the socket fixed on the reflector may be considered imposed by the dimensions of the socket fixed on the reflector to ensure both the power supply of the circular lamp as its mechanical fixation which, it, determines the position of the plane of the lamp circular.
  • the possible additional support (s) of the circular lamp are adjusted to ensure its fixation and positioning in the plane of the circular lamp.
  • each fraction of the technical reflector must participate in achieving the goal that is to obtain from the reflector-lamp assembly, considered in as a fixture, the best light output possible.
  • the dimensions and the relative position of each of the components as well as the chosen target angle will generate the modification of the plane of the reflector in a series of concentric, parallel circular planes or oblique to the plane of the circular lamp.
  • the part central reflector in the form of a set (tron) conic, will have the task of intercepting orient the incident light rays of a part of the discoidal space.
  • the position of the facets and their orientation are arranged in such a way that the aforementioned reflected rays are outside the circular lamp.
  • the circular lamp does not prevent the propagation of the reflected rays towards the useful zone.
  • At least a part of the facets are symmetrical by relative to a cylindrical surface generated by the axis Circular geometric circular lamp.
  • the reflector technique preferably comprises at least one pair of inclined facets, which have a circular edge common to the intersection of the plane of the reflector and cylindrical surface aforesaid.
  • this one includes a frustoconical surface in the discoidal space bounded by the circular lamp.
  • the small base of the surface frustoconical is located in the plane of the lamp circular and its large base is set back from audit plan of the circular lamp and is located in the plane of the reflector.
  • the frustoconical surface makes advantageously with the axis of revolution of the lamp circle, an angle such as to any incident ray of the circular lamp, which strikes said frustoconical surface, it corresponds to a ray reflected in one direction making, with said axis of revolution, an angle less than or equal to the target angle. This angle is preferably equal to 135 degrees.
  • the position of the said frustoconical surface is preferably adjusted so that any ray reflected by it crosses the space discoidal above, without hitting the circular lamp.
  • the technical reflector comprises a conical surface in the discoidal space delimited by the circular lamp.
  • the conical surface has its vertex on the axis of revolution of the circular lamp and its base in the plane of said circular lamp.
  • the invention also relates to a luminaire comprising a circular lamp and a reflector according to the invention, as defined more above.
  • Figure 1 is a cross-section following a plane passing through the axis of revolution of the lamp circular (and reflector);
  • Figure 2 shows, on a larger scale, a detail of the luminaire of figure 1, equipped with a form particular embodiment of the technical reflector according to the invention. It represents, for one of the multiple variants, the sequence of the numerous corrections to the initial flatness of the reflector.
  • a 360 ° rotation around the axis of reflector revolution draws, in space, the shape of the specular face of the technical reflector as well as its circular lamp.
  • the radius of the reflector and the congestion of the cone on its axis of revolution, which depend in particular on the dimensions of the luminaire could contain it, are known to be known.
  • Figure 3 shows, on a large scale, a detail constructive of a variant of the reflector of FIGS. and 2.
  • the luminaire shown in FIGS. 1 and 2 comprises a circular or toroidal annular lamp 1 and a technical reflector according to the invention, designated, as a whole, by the reference notation 2.
  • the circular lamp 1 may for example consist of a tube fluorescent. It is arranged next to an area useful to illuminate (not shown), defined by the angle solid X in the center of the torus 1.
  • the angle X is the angle target defined above.
  • circular lamp 1 is for example suspended from the ceiling of the room and its plane 7 is substantially horizontal.
  • the sectional view of the half-reflector 2 is shown on a larger scale in FIG. 2.
  • the reflector 2 comprises a plane disc 17 situated above the circular lamp 1 and parallel to the plane 7 thereof.
  • the disc 17 is hollowed out with grooves forming inclined annular facets DC, Dx, xF, Gy, yH, Hz, zI, Ja, aK 1 , K 1 -b, bK 2 , K 2 -c, cK 3 , K 3 - d, dK.
  • Two horizontal facets FG and IJ located in the plane 17 of the reflector join the facets xF and Gy, on the one hand, and the facets zI and Ja, on the other hand.
  • the inclined facets YH and Hz have a common circular edge H, located at the intersection of the plane 17 and a fictitious cylinder whose axis coincides with the axis 11 of the circular lamp 1 and whose diameter equals the diameter the circular geometric axis passing through the point O of the circular lamp 1. These two facets are also inclined symmetrically with respect to said cylinder.
  • the tapered annular facet D-C is connected to a horizontal annular facet C-B, located in the plan 7 of the circular lamp 1. This is extended by a conical surface B-A whose top is on the axis 11 of the circular lamp 1.
  • the top A of the conical surface AB is located on the axis of revolution 11 of the circular lamp 1. It is the summit of a right cone whose axis merges with the axis of revolution of the circular lamp 1 and form with the edge AB an angle such that the ray reflected by the inclined plane AB, at the top A, crosses the axis of 11 revolution of the circular lamp and form with this one the target angle X.
  • the circular edge B is located on the plane 7 of the circular lamp 1.
  • the circular edge C is also located on the plan 7 of the circular lamp 1.
  • the frustoconical annular surface C-D forms an angle 135 degrees with plane 17 of the reflector and its edge circular D is located on the plane 17 of the reflector, in the disc space 26.
  • the ray reflected by the facet C-D at the edge D is tangent to the inner part of tube 1 and is parallel to the edge 18 of the target angle X.
  • the edge F is located on the plane 17 of the reflector, in the discoidal space 26, and the ray reflected on the edge F of the horizontal facet F-G deviates from the tube 1 parallel to the edge 19 of the target angle.
  • the edge G is located on the plane 17 of the reflector and the ray reflected by the facet F-G on the edge G is tangent to the inner part of tube 1 and returned inside the target angle X.
  • the edge I is located on the plane 17 of the reflector and is symmetrical with the edge G with respect to the edge H.
  • the edge J is located on the plane 17 of the reflector and is symmetrical with the edge F with respect to the edge H.
  • the edge K is located on the plane 17 of the reflector, at its outer limit.
  • Zones between two consecutive points, can be classified into three categories: those of which flatness should not be modified (zones 1), those whose flatness must be modified by giving priority the result to be obtained (zones 2) and those whose flatness must be modified by being able to give the priority to a choice of realization while respecting the result to be obtained (zones 3)
  • the edges A and B determine a zone 1.
  • Edges B and C determine a zone 1.
  • Edges C and D determine a zone 1.
  • Edges D and F determine zone 2 or 3.
  • Edges F and G determine a zone 1.
  • the edges G and H determine an area 2.
  • Edges H and I determine an area 2.
  • Edges I and J determine a zone 1.
  • the edges J and K determine a zone 3.
  • Type 1 zones are fully defined.
  • the type 2 zone determined by the edges G and H is a zone of inter-reflections whose plane G-H must split into two planes G-y and y-H that replace it.
  • the angle in H of the triangle GHy is defined so that that the ray reflected by the inclined plane H-y in the immediate vicinity of the H point is tangent to the inside the tube. At the point y of the triangle GHy, the radius reflected by the inclined plane H-y goes through G.
  • the type 2 zone determined by the edges H and I is a zone of inter-reflections whose plane H-I must split into two planes H-z and z-I that replace it.
  • the angle in H of the triangle IHz is defined so that that the ray reflected by the inclined plane H-z in the immediate vicinity of the H point is tangent to the outside of the tube. At point z of the triangle IHz, the radius reflected by the inclined plane H-z passes through I.
  • Type 3 zone determined by J and K edges leaves the reflector designer a wide range of opportunities to achieve the goal. Indeed, nothing imposes to correct at one time the angle attacking the incident ray and the overall objective can to be achieved by a succession of corrections partial ones of smaller amplitude via a sequence of smaller areas. In a non-exhaustive way, dimensions of the luminaire, its foreseeable applications, the material used for the realization of the reflector or any objective or subjective element deemed useful may influence the number of areas that will be retained.
  • the chosen amplitude determines the distance between the edge a and the plane of the reflector.
  • the conical surface Oa passes through J.
  • the position of the edge K1 is defined so that the radius reflected by the inclined facet aK 1 on the circular edge K 1 is parallel to the edge 18 of the target angle X.
  • the circular edge K 1 which is substituted for the circular edge J allows via the axis Ob to define K 2 , then K 3 and so on until K n (not shown) which must be confused with the circular end K of the reflector.
  • the area determined by the edges D and F can be treated in two ways: zone 2 if the correction can or must be done once or zone 3 if the corrections can or must be multiplied for in decrease the amplitude.
  • the zone DF of the reflector 2 is treated as a zone of the type 3.
  • the disk 17 is dug with grooves. forming inclined annular facets Fp, pE 1 , E 1 -q, qE 2 , E 2 -r, rE 3 , E 3 -s and sD.
  • the chosen amplitude determines the distance between the edge p and the plane 17 of the reflector.
  • the conical surface Op passes through F.
  • the position of the edge E1 is defined so that the radius reflected by the inclined facet pE 1 on the circular edge E 1 is parallel to the edge 19 of the target angle X.
  • the circular edge E1 which replaces the circular edge F, allows via the axis Oq to define E 2 , then E3 and so on. up to En (not shown) which must be confused with the circular edge D.
  • a series of small areas is thus produced, the sum of the lengths of which must correspond to the distance DF (known) and whose amplitude or amplitudes must make it possible to respect the target (known) angle.
  • the resolution of a series of mathematical equations within the reach of those skilled in the art, makes it possible to determine the optimum number of these small areas and the optimum amplitudes and to define precisely the modifications to be made to the flatness of this area. part of the technical reflector.
  • Addendum Tube Tubular fluorescent lamp rectilinear with two bases.
  • Technical luminaire Luminaire comprising at least one tube placed in front of a reflector or partially surrounded by it.
  • Compact tube Single-ended tube obtained by folding one or more times a tube on itself.
  • Technical reflector Reflector which, associated with the circular lamp , is the object of the invention and is intended to reflect to a useful area to illuminate the incident light rays emitted by the circular lamp and reaching it.
  • Useful area Surface considered flat, which is arranged opposite the circular lamp, perpendicular to its axis of revolution.
  • Incidental ray Straight ray of light supposed to come from the circular axis of the circular lamp.
  • Reflector plane A common plane in which each annular facet of the technical reflector comprises at least one circular edge.
  • Facet inclined Frustoconical annular facet of the technical reflector which is inclined relative to the plane of the reflector.
  • Flat facet Annular facet of the technical reflector which is located in the plane of the reflector or in a plane parallel thereto.
  • Target angle Angle defined by the ridge (or apothema) and the axis (or height) of the cone of revolution whose vertex is on the axis of revolution of the circular lamp, in the center of the plane of the lamp and whose base is confuses with the useful area to illuminate.

Abstract

The reflector has a sequence of annular facets, each presenting a circular edge in a plane (17) of the reflector. The plane (17) is parallel to a plane (7) of a circline lamp. The facets are oriented such that light rays reflected by them and produced by incident rays of the lamp, form maximum angle equal to a defined target angle, with rotational axis (11) of the circline lamp. An independent claim is also included for a light comprising a circline lamp and a reflector.

Description

Domaine de l'inventionField of the invention

L'invention se rapporte aux luminaires, tels que les luminaires destinés à l'éclairage intérieur ou extérieur, de surfaces ou de locaux, à usage industriel, commercial, tertiaire ou privatif.The invention relates to luminaires, such as luminaires for indoor lighting or exterior, of surfaces or of premises, for industrial use, commercial, tertiary or private.

Elle est plus spécialement destinée aux luminaires comprenant une lampe circulaire, disposée devant un réflecteur.It is more specifically intended for luminaires comprising a circular lamp, arranged in front of a reflector.

Simplification rédactionnelle utiliséeEditorial simplification used

Dans la suite du présent mémoire, les expressions nécessaires à la bonne compréhension de l'invention sont reprises entre guillemets et soulignées (« ... ») la première fois qu'elles apparaissent dans le texte et sont alors définies de façon précise. Par la suite, réputées connues, elles ne seront plus explicitées mais un addenda en reprend la liste exhaustive avec renvoi à la définition initiale.In the remainder of this memo, the expressions necessary for a good understanding of the invention are quoted in quotation marks and underlined (" ... ") the first time they appear in the text and are then defined precisely. Subsequently, known known, they will not be more explicit but an addendum lists the complete list with reference to the original definition.

Etat de la techniqueState of the art

Les luminaires à lampe(s) tubulaire(s) fluorescente(s) rectiligne(s) à deux culots, ci-après dénommés « tube(s) », sont communément utilisés depuis longtemps notamment pour l'éclairage des locaux. Ces luminaires connus comprennent habituellement un ou plusieurs tubes, disposés au voisinage du plafond du local à éclairer. Dans les « luminaires techniques », ainsi dénommés pour leur recherche de plus grandes performances lumineuses, les tubes sont généralement placés devant un réflecteur ou entourés partiellement par celui-ci de façon à concentrer le flux lumineux vers une zone utile (le sol par exemple) du local concerné. Un luminaire de ce type est décrit dans le document WO-97/43578. Dans ce luminaire connu, le réflecteur, en forme de V retourné, comprend deux ailes profilées ou cintrées dont l'intersection génère un segment de droite positionné au-dessus et dans l'axe longitudinal du tube. Une contrainte liée à l'utilisation des tubes est que les luminaires techniques conçus pour en diriger la lumière vers une zone utile doivent posséder au moins la longueur du tube, ce qui peut les rendre encombrants.Fixtures with fluorescent tube (s) fluorescent (s) rectilinear (s) with two bases, hereinafter referred to as " tube (s) ", are commonly used for a long time especially for lighting premises. These known luminaires usually comprise one or more tubes disposed in the vicinity of the ceiling of the room to be illuminated. In " technical luminaires ", so called for their search for greater luminous performance, the tubes are generally placed in front of a reflector or partially surrounded by the reflector so as to concentrate the luminous flux towards a useful zone (the ground for example) of the local concerned. A luminaire of this type is described in WO-97/43578. In this known luminaire, the reflector, in the form of an inverted V, comprises two profiled or curved wings whose intersection generates a line segment positioned above and in the longitudinal axis of the tube. A constraint related to the use of the tubes is that the technical luminaires designed to direct the light to a useful area must have at least the length of the tube, which can make them bulky.

Pour réduire l'encombrement des tubes, on a imaginé le « tube compact », à culot unique, obtenu en repliant une ou plusieurs fois le tube sur lui-même. Un tube compact est donc composé d'un nombre variable de fractions consécutives d'un tube. La compacité de ces lampes autorise leur utilisation dans des luminaires connus de formes et dimensions diverses, en lieu et place des ampoules à filament pour lesquelles ils ont généralement été conçus. Par rapport aux tubes, les tubes compacts sont toutefois économiquement désavantageux. En effet, leur « rendement lumineux », défini par le rapport entre le flux lumineux mesuré et la quantité d'énergie nécessaire à le produire, est déficient. En cause, les pertes de flux dues aux réflexions internes entre les différentes fractions du tube. D'autre part, leur forme souvent complexe rend difficile la conception d'un luminaire technique capable d'en exploiter la quintessence.To reduce the bulk of the tubes, we imagined the " compact tube ", single-ended, obtained by folding one or more times the tube on itself. A compact tube is therefore composed of a variable number of consecutive fractions of a tube. The compactness of these lamps allows their use in known luminaires of various shapes and sizes, instead of the filament bulbs for which they were generally designed. Compared to the tubes, the compact tubes are however economically disadvantageous. Indeed, their " light output ", defined by the ratio between the measured luminous flux and the amount of energy required to produce it, is deficient. In cause, the flux losses due to internal reflections between the different fractions of the tube. On the other hand, their often complex shape makes it difficult to design a technical luminaire capable of exploiting its quintessence.

Dans le document GB-575 817, on décrit un luminaire dans lequel le tube est cintré pour former une lampe tubulaire circulaire ou toroïdale, c'est-à-dire ayant la forme d'un tore annulaire. La lampe circulaire est entourée d'un réflecteur en forme de demi-tore renversé. Ce réflecteur a la propriété de réfléchir la majorité des rayons incidents de lumière qui l'atteignent, sur une surface annulaire du sol, tout en cachant partiellement le tube à la vue dans le but de répondre à des critères de confort particuliers, formant une zone centrale circulaire mal éclairée.In GB-575 817, a luminaire is described. wherein the tube is bent to form a lamp tubular circular or toroidal, that is to say having the form of an annular torus. The circular lamp is surrounded by a reflector in the shape of an inverted half-torus. This reflector has the property to reflect the majority incident rays of light reaching it, on an annular surface of the soil, while hiding partially the tube in plain sight in order to respond to particular comfort criteria, forming a zone circular center poorly lit.

Résumé de l'inventionSummary of the invention

L'invention vise à constituer un ensemble indissociable unissant un tube compact et un réflecteur de conception nouvelle, capable de procurer au luminaire qui le contient un rendement lumineux utile comparable aux meilleurs luminaires pour tubes.The invention aims to constitute a set inseparable uniting a compact tube and a reflector of new design, able to provide the luminaire which contains a comparable useful light output the best luminaires for tubes.

L'invention concerne de manière spécifique un réflecteur conçu pour optimiser le rendement lumineux d'un luminaire équipé d'une lampe circulaire, le réflecteur se caractérisant en ce qu'il comprend une succession de facettes annulaires, qui présentent chacune une arête circulaire dans un plan commun, parallèle au plan de la lampe circulaire et qui sont orientées de manière que les rayons de lumière réfléchis par elles, engendrés par des rayons incidents de la lampe circulaire, forment avec l'axe de révolution de ladite lampe circulaire, un angle au maximum égal à un angle prédéterminé, désigné par la suite « angle cible », dont une définition sera fournie plus loin..The invention relates specifically to a reflector designed to optimize the luminous efficiency of a luminaire equipped with a circular lamp, the reflector being characterized in that it comprises a succession of annular facets, each of which has a circular edge in a plane, parallel to the plane of the circular lamp and which are oriented so that the rays of light reflected by them, generated by incident rays of the circular lamp, form with the axis of revolution of said circular lamp, an angle to maximum equal to a predetermined angle, hereinafter referred to as "target angle ", a definition of which will be provided later.

On entend désigner par « rendement lumineux utile » d'un luminaire, le rapport entre le niveau d'éclairement moyen mesuré sur le plan utile visé et la quantité d'énergie nécessaire pour l'obtenir.The term " useful luminous efficiency " of a luminaire means the ratio between the average illuminance level measured on the intended useful plane and the amount of energy required to obtain it.

Le réflecteur selon l'invention est destiné à une lampe circulaire. On entend désigner par « lampe circulaire », une couronne de lumière de forme circulaire ou assimilée. La couronne lumineuse comprend habituellement un tube cintré, formant un tore, c'est-à-dire un solide de révolution engendré par un cercle qui tourne autour d'une droite située dans son plan, et qui ne le coupe pas. L'invention n'est toutefois pas limitée à des tubes cintrés en forme de tore et s'applique indifféremment à tout type de couronne lumineuse. Elle s'applique notamment aussi aux couronnes lumineuses formées d'une succession de sources individuelles de lumière, alimentées par de l'énergie électrique ou non-électrique, par exemple des ampoules électriques.The reflector according to the invention is intended for a circular lamp. The term "circular lamp" refers to a ring of light of circular or similar shape. The luminous crown usually comprises a curved tube forming a torus, that is to say a solid of revolution generated by a circle which rotates about a straight line in its plane, and which does not cut it. The invention is however not limited to bent tubes torus-shaped and applies equally to any type of light corona. It applies in particular to the light crowns formed of a succession of individual sources of light, powered by electrical or non-electrical energy, for example electric light bulbs.

Le mode de fonctionnement de la lampe circulaire n'est pas critique. Il peut s'agir indifféremment d'une lampe circulaire à incandescence, d'une lampe circulaire à arc, d'une lampe circulaire luminescente, d'une lampe circulaire à paroi fluorescente, ou de toute source lumineuse adéquate.The operating mode of the circular lamp is not critical. It can be indifferently incandescent circular lamp, circular lamp arc, a luminescent circular lamp, a lamp circular fluorescent wall, or any source adequate light.

La couronne de lumière est de forme circulaire ou assimilée. On entend désigner par l'adjectif « assimilée » que la forme de la couronne peut s'écarter de la forme rigoureusement circulaire et avoir par exemple une forme polygonale ou ovoïde, régulière ou irrégulière.The crown of light is circular in shape or assimilated. We mean by the adjective "Assimilated" that the shape of the crown can depart of the strictly circular shape and have by example a polygonal or ovoid shape, regular or irregular.

L'expression « plan de la lampe » désigne le plan géométrique défini par l'axe géométrique circulaire de la lampe circulaire.The expression " plane of the lamp" designates the geometric plane defined by the circular geometric axis of the circular lamp.

L'expression « axe de révolution de la lampe » désigne l'axe géométrique rectiligne passant par le centre de la lampe circulaire, perpendiculairement au plan de la lampe circulaire.The expression "axis of revolution of the lamp" designates the rectilinear geometric axis passing through the center of the circular lamp, perpendicular to the plane of the circular lamp.

L'expression « espace discoïdal » désigne l'espace cylindrique qui s'inscrit à l'intérieur du tore annulaire constituant la lampe circulaire. The expression " discoidal space " designates the cylindrical space that fits inside the annular torus constituting the circular lamp.

Selon la position du luminaire, le plan de la lampe circulaire peut être horizontal, vertical ou oblique. Lorsque le luminaire est destiné à l'éclairage du sol d'un local, la lampe circulaire est habituellement disposée horizontalement au voisinage du plafond du local et son plan est alors sensiblement horizontal. L'invention s'applique toutefois également aux luminaires dans lesquels la lampe circulaire occupe une autre position, par exemple une position verticale ou une position oblique. C'est notamment le cas lorsque le luminaire est disposé sur une paroi verticale ou sur un pylône ou encore lorsqu'il est utilisé à la manière d'une source d'éclairage sur engin mobile ou lorsqu'il est portable.Depending on the position of the luminaire, the plane of the lamp circular can be horizontal, vertical or oblique. When the luminaire is intended for floor lighting from a local, the circular lamp is usually arranged horizontally in the vicinity of the ceiling of the local and its plane is then substantially horizontal. The invention however also applies to luminaires in which the circular lamp occupies a another position, for example a vertical position or an oblique position. This is particularly the case when fixture is placed on a vertical wall or on a pylon or when used in the manner a source of lighting on a moving machine or when is portable.

Le « réflecteur technique » qui, associé à la lampe circulaire, fait l'objet du brevet a pour mission de réfléchir vers une zone utile à éclairer, les rayons lumineux incidents émis par la lampe circulaire et qui l'atteignentThe " technical reflector " which, associated with the circular lamp, is the subject of the patent has for mission to reflect to a useful area to illuminate, the incident light rays emitted by the circular lamp and reaching it

On entend désigner par « zone utile » à éclairer, une surface considérée comme plane, qui est disposée en regard de la lampe circulaire et qui traverse son axe de révolution.The term " useful area" to be illuminated means a surface considered as plane, which is arranged facing the circular lamp and which crosses its axis of revolution.

Un « rayon incident » est, par convention, un rayon rectiligne de lumière, supposé provenir de l'axe circulaire de la lampe circulaire. Un « rayon réfléchi » est, par convention, un rayon rectiligne de lumière provenant du réflecteur et résultant d'un rayon incident atteignant celui-ci.An " incident ray" is, by convention, a rectilinear ray of light, supposed to come from the circular axis of the circular lamp. A " reflected ray" is, by convention, a rectilinear ray of light from the reflector and resulting from an incident ray reaching it.

Selon l'invention, le réflecteur comprend une succession de facettes annulaires qui présentent chacune une arête circulaire dans un plan commun, parallèle au plan de la lampe circulaire. Par la suite, ce plan commun sera désigne « plan du réflecteur ». Dans le luminaire selon l'invention, certaines au moins des facettes annulaires précitées sont inclinées par rapport au plan du réflecteur, formant des surfaces tronconiques. L'angle d'inclinaison de ces « facettes inclinées » est calculé en fonction de la direction recherchée pour les rayons réfléchis par elles. Les facettes inclinées peuvent être obtenues par tout moyen adéquat. Elles peuvent être des facettes isolées ou formées par des sillons creusés dans un disque plan formant le plan du réflecteur. Entre les facettes inclinées, le réflecteur peut généralement comprendre des « facettes circulaires planes ». Celles-ci sont généralement situées dans le plan du réflecteur. Rien n'empêche toutefois qu'une ou plusieurs d'entre-elles soient situées dans un autre plan, parallèle au plan du réflecteur.According to the invention, the reflector comprises a succession of annular facets which each have a circular edge in a common plane, parallel to the plane of the circular lamp. Subsequently, this common plane will be designated "plane of the reflector". In the luminaire according to the invention, at least some of the aforementioned annular facets are inclined relative to the plane of the reflector, forming frustoconical surfaces. The angle of inclination of these " inclined facets" is calculated according to the direction sought for the rays reflected by them. The inclined facets can be obtained by any suitable means. They can be isolated facets or formed by grooves carved in a plane disk forming the plane of the reflector. Between the inclined facets, the reflector can generally include "flat circular facets ". These are usually located in the plane of the reflector. However, nothing prevents one or more of them being located in another plane, parallel to the plane of the reflector.

On entend par « modification de la planéité », le creusement de sillons ou l'élévation de plans par rapport au plan du réflecteur, dans le but de former les facettes inclinées. Les termes "creusement" et "élévation" sont utilisés ici à titre purement imagé et ne préjugent en rien quant à la méthode à utiliser pour en obtenir les résultats. C'est le matériau retenu pour la réalisation du réflecteur qui détermine les moyens de mises en formes à utiliser. La face spéculaire ou face orientée vers la lampe circulaire voit ainsi sa planéité modifiée par des sillons ou des excroissances concentriques, chaque fois que l'angle d'attaque d'un rayon incident doit être modifié pour générer un rayon réfléchi à l'intérieur de l'angle cible (dont une définition sera fournie plus loin), ainsi qu'en situations d'inter-réflexions de manière à rendre utiles les rayons réfléchis.By " flatness modification " is meant the digging of grooves or the elevation of planes with respect to the plane of the reflector, in order to form the inclined facets. The terms "digging" and "elevation" are used here for purely pictorial purposes and do not prejudge the method to be used to obtain the results. It is the material retained for the realization of the reflector which determines the means of shaping to use. The specular face or face facing the circular lamp thus sees its flatness modified by grooves or concentric growths, whenever the angle of attack of an incident ray must be modified to generate a reflected ray inside the circular lamp. the target angle (a definition of which will be provided later), as well as in inter-reflections situations so as to make the reflected rays useful.

Les facettes du réflecteur selon l'invention sont réalisées en un matériau capable de réfléchir les radiations électromagnétiques du spectre visible. Il est généralement réalisé en un matériau dont la finition spéculaire présente un grand pouvoir réfléchissant. Sans préjudice des modifications qui seront apportées à la planéité de sa face spéculaire dans le but d'atteindre les objectifs de rendement lumineux de l'ensemble réflecteur-lampe selon l'invention, la forme originelle du réflecteur est celle d'un disque dont le plan est parallèle au plan de la lampe circulaire. Rien n'empêche toutefois que, pour l'adapter à des contraintes fonctionnelles, décoratives, esthétiques, modulaires ou autres, le cercle de ce disque s'inscrive dans une figure géométrique différente, qu'elle soit ovale, polygonale ou quelconque.The facets of the reflector according to the invention are made of a material capable of reflecting the electromagnetic radiation of the visible spectrum. It is generally made of a material whose finish specular has a great reflective power. Without prejudice to the changes that will be made to the flatness of its specular face for the purpose to achieve the objectives of light output of the reflector-lamp assembly according to the invention, the shape original reflector is that of a disc whose plane is parallel to the plane of the circular lamp. Nothing However, in order to adapt it to functional, decorative, aesthetic constraints, modular or otherwise, the circle of this disc fits in a different geometric figure, be it oval, polygonal or any.

Avant la réalisation du réflecteur, il est nécessaire d'analyser les contraintes de distribution lumineuse auxquelles doit répondre le luminaire qui est évidemment réputé pouvoir les rencontrer. Cette analyse procure les deux éléments de base indispensables à la précision des futurs calculs à effectuer : la distance entre le plan de la lampe circulaire et la zone utile à éclairer ainsi que le diamètre de cette zone. Ces valeurs permettent de définir un cône de révolution dont le sommet se trouve sur l'axe de révolution de la lampe circulaire au centre du plan de la lampe circulaire, dont la base se confond avec la zone utile à éclairer et en prend le diamètre et enfin, dont la hauteur est égale à la distance séparant le plan de la lampe circulaire de la zone utile.Before the reflector is made, it is necessary to analyze the distribution constraints which the luminaire, which is obviously reputed to be able to meet them. This analysis provides the two basic elements essential to the accuracy of future calculations to be made: distance between the plane of the circular lamp and the area useful to illuminate as well as the diameter of this area. These values make it possible to define a cone of revolution the top is on the axis of revolution of the lamp circular in the center of the plane of the circular lamp, whose base merges with the useful area to be illuminated and takes the diameter and finally, whose height is equal at the distance separating the plane from the circular lamp the useful zone.

L' « angle cible », qui est l'angle défini par l'arête (ou apothème) et l'axe (ou hauteur) de ce cône, est celui entre les limites duquel seront renvoyés le maximum possible des rayons réfléchis déviés par le réflecteur technique.The "target angle ", which is the angle defined by the ridge (or apothema) and the axis (or height) of this cone, is the angle between which the maximum of the reflected rays deflected by the technical reflector.

Pour la suite de l'étude, la distance séparant le plan du réflecteur du plan de la lampe circulaire est réputée connue. Le mode de construction du luminaire et les accessoires utilisés font partie des éléments qui la déterminent.For the rest of the study, the distance separating plane of the reflector of the plane of the circular lamp is reputedly known. The mode of construction of the luminaire and the accessories used are part of the elements that the determine.

On peut considérer, par exemple, qu'elle soit imposée par les dimensions de la douille fixée sur le réflecteur pour assurer tant l'alimentation électrique de la lampe circulaire que sa fixation mécanique qui, elle, détermine la position du plan de la lampe circulaire. Le ou les supports complémentaires éventuels de la lampe circulaire sont réglés de manière à assurer sa fixation et son positionnement dans le plan de la lampe circulaire.For example, it may be considered imposed by the dimensions of the socket fixed on the reflector to ensure both the power supply of the circular lamp as its mechanical fixation which, it, determines the position of the plane of the lamp circular. The possible additional support (s) of the circular lamp are adjusted to ensure its fixation and positioning in the plane of the circular lamp.

Chaque fraction du réflecteur technique doit participer à la réalisation de l'objectif qui est d'obtenir de l'ensemble réflecteur-lampe, considéré en tant que luminaire, le meilleur rendement lumineux utile possible. Les dimensions et la position relative de chacun des composants ainsi que l'angle cible choisi vont générer la modification du plan du réflecteur en une suite de plans circulaires concentriques, parallèles ou obliques au plan de la lampe circulaire. La partie centrale du réflecteur, sous la forme d'un ensemble (tron)conique, aura pour mission d'intercepter et orienter les rayons lumineux incidents d'une partie de l'espace discoïdal.Each fraction of the technical reflector must participate in achieving the goal that is to obtain from the reflector-lamp assembly, considered in as a fixture, the best light output possible. The dimensions and the relative position of each of the components as well as the chosen target angle will generate the modification of the plane of the reflector in a series of concentric, parallel circular planes or oblique to the plane of the circular lamp. The part central reflector, in the form of a set (tron) conic, will have the task of intercepting orient the incident light rays of a part of the discoidal space.

Selon une forme de réalisation particulière du réflecteur technique, la position des facettes et leur orientation sont agencées de telle manière que les rayons réfléchis précités le soient en dehors de la lampe circulaire. Dans cette forme de réalisation de l'invention, la lampe circulaire ne fait pas obstacle à la propagation des rayons réfléchis vers la zone utile.According to a particular embodiment of technical reflector, the position of the facets and their orientation are arranged in such a way that the aforementioned reflected rays are outside the circular lamp. In this embodiment of the invention, the circular lamp does not prevent the propagation of the reflected rays towards the useful zone.

Dans une autre forme de réalisation spécialement avantageuse du réflecteur technique selon l'invention, une partie au moins des facettes sont symétriques par rapport à une surface cylindrique engendrées par l'axe géométrique circulaire de la lampe circulaire.In another embodiment especially advantageous of the technical reflector according to the invention, at least a part of the facets are symmetrical by relative to a cylindrical surface generated by the axis Circular geometric circular lamp.

Dans cette forme de réalisation le réflecteur technique comprend de préférence au moins une paire de facettes inclinées, qui possèdent une arête circulaire commune correspondant à l'intersection du plan du réflecteur et de la surface cylindrique susdite.In this embodiment the reflector technique preferably comprises at least one pair of inclined facets, which have a circular edge common to the intersection of the plane of the reflector and cylindrical surface aforesaid.

Dans une forme de réalisation supplémentaire du réflecteur technique selon l'invention, celui-ci comprend une surface tronconique dans l'espace discoïdal délimité par la lampe circulaire. Dans cette forme de réalisation de l'invention, la petite base de la surface tronconique est située dans le plan de la lampe circulaire et sa grande base est en retrait par rapport audit plan de la lampe circulaire et est située dans le plan du réflecteur. La surface tronconique fait avantageusement avec l'axe de révolution de la lampe circulaire, un angle tel qu'à tout rayon incident de la lampe circulaire, qui frappe ladite surface tronconique, il corresponde un rayon réfléchi dans une direction faisant, avec ledit axe de révolution, un angle inférieur ou égal à l'angle cible. Cet angle est de préférence égal à 135 degrés. La position de ladite surface tronconique est de préférence réglée de manière que tout rayon réfléchi par elle traverse l'espace discoïdal précité, sans percuter la lampe circulaire.In a further embodiment of technical reflector according to the invention, this one includes a frustoconical surface in the discoidal space bounded by the circular lamp. In this form of realization of the invention, the small base of the surface frustoconical is located in the plane of the lamp circular and its large base is set back from audit plan of the circular lamp and is located in the plane of the reflector. The frustoconical surface makes advantageously with the axis of revolution of the lamp circle, an angle such as to any incident ray of the circular lamp, which strikes said frustoconical surface, it corresponds to a ray reflected in one direction making, with said axis of revolution, an angle less than or equal to the target angle. This angle is preferably equal to 135 degrees. The position of the said frustoconical surface is preferably adjusted so that any ray reflected by it crosses the space discoidal above, without hitting the circular lamp.

Dans une forme de réalisation ultérieure de l'invention, le réflecteur technique comprend une surface conique dans l'espace discoïdal délimité par la lampe circulaire. Dans cette forme de réalisation de l'invention, la surface conique a son sommet sur l'axe de révolution de la lampe circulaire et sa base dans le plan de ladite lampe circulaire.In a further embodiment of the invention, the technical reflector comprises a conical surface in the discoidal space delimited by the circular lamp. In this embodiment of the invention, the conical surface has its vertex on the axis of revolution of the circular lamp and its base in the plane of said circular lamp.

L'invention concerne également un luminaire comprenant une lampe circulaire et un réflecteur technique conforme à l'invention, tel que défini plus haut.The invention also relates to a luminaire comprising a circular lamp and a reflector according to the invention, as defined more above.

Brève description des figuresBrief description of the figures

Des particularités et détails de l'invention vont apparaítre au cours de la description suivante des dessins annexés qui représentent un luminaire comprenant une lampe circulaire et un réflecteur technique conforme à l'invention.Features and details of the invention will appear in the following description of the attached drawings which show a luminaire comprising a circular lamp and a compliant technical reflector to the invention.

La figure 1 est une coupe transversale suivant un plan passant par l'axe de révolution de la lampe circulaire (et du réflecteur) ;Figure 1 is a cross-section following a plane passing through the axis of revolution of the lamp circular (and reflector);

La figure 2 montre, à plus grande échelle, un détail du luminaire de la figure 1, équipé d'une forme de réalisation particulière du réflecteur technique selon l'invention. Elle représente, pour l'une des multiples variantes, l'enchaínement des nombreuses corrections apportées à la planéité initiale du réflecteur. Une rotation de 360° autour de l'axe de révolution du réflecteur dessine, dans l'espace, la forme de la face spéculaire du réflecteur technique ainsi que sa lampe circulaire. Le rayon du réflecteur et l'encombrement du cône sur son axe de révolution, qui dépendent notamment des dimensions du luminaire qui pourrait le contenir, sont réputés connus.Figure 2 shows, on a larger scale, a detail of the luminaire of figure 1, equipped with a form particular embodiment of the technical reflector according to the invention. It represents, for one of the multiple variants, the sequence of the numerous corrections to the initial flatness of the reflector. A 360 ° rotation around the axis of reflector revolution draws, in space, the shape of the specular face of the technical reflector as well as its circular lamp. The radius of the reflector and the congestion of the cone on its axis of revolution, which depend in particular on the dimensions of the luminaire could contain it, are known to be known.

La figure 3 montre, à grande échelle, un détail constructif d'une variante du réflecteur des figures 1 et 2.Figure 3 shows, on a large scale, a detail constructive of a variant of the reflector of FIGS. and 2.

Les figures ne sont pas dessinées à l'échelle. Dans celles-ci, des mêmes notations de référence désignent les mêmes éléments.The figures are not drawn to scale. In these, of the same reference notations designate the same elements.

Description détaillée d'un mode de réalisation particulierDetailed description of a particular embodiment

Le luminaire représenté aux figures 1 et 2 comprend une lampe annulaire circulaire ou toroïdale 1 et un réflecteur technique conforme à l'invention, désigné, dans son ensemble, par la notation de référence 2. La lampe circulaire 1 peut par exemple consister en un tube fluorescent. Elle est disposée en regard d'une zone utile à éclairer (non représentée), définie par l'angle solide X au centre du tore 1. L'angle X est l'angle cible défini plus haut. Dans le cas où la zone à éclairer est le sol d'un local, la lampe circulaire 1 est par exemple suspendue au plafond du local et son plan 7 est sensiblement horizontal.The luminaire shown in FIGS. 1 and 2 comprises a circular or toroidal annular lamp 1 and a technical reflector according to the invention, designated, as a whole, by the reference notation 2. The circular lamp 1 may for example consist of a tube fluorescent. It is arranged next to an area useful to illuminate (not shown), defined by the angle solid X in the center of the torus 1. The angle X is the angle target defined above. In the case where the area to illuminate is the floor of a local, circular lamp 1 is for example suspended from the ceiling of the room and its plane 7 is substantially horizontal.

La vue en coupe du demi-réflecteur 2 est représentée à plus grande échelle à la figure 2. Le réflecteur 2 comprend un disque plan 17 situé au-dessus de la lampe circulaire 1 et parallèle au plan 7 de celle-ci. Le disque 17 est creusé de sillons formant des facettes annulaires inclinées D-C, D-x, x-F, G-y, y-H, H-z, z-I, J-a, a-K1, K1-b, b-K2, K2-c, c-K3, K3-d, d-K. Deux facettes horizontales F-G et I-J, situées dans le plan 17 du réflecteur joignent les facettes x-F et G-y, d'une part, et les facettes z-I et J-a, d'autre part. Les facettes inclinées y-H et H-z ont une arête circulaire commune H, située à l'intersection du plan 17 et d'un cylindre fictif dont l'axe se confond avec l'axe 11 de la lampe circulaire 1 et dont le diamètre égale le diamètre de l'axe géométrique circulaire passant par le point O de la lampe circulaire 1. Ces deux facettes sont par ailleurs inclinées de manière symétrique par rapport audit cylindre.The sectional view of the half-reflector 2 is shown on a larger scale in FIG. 2. The reflector 2 comprises a plane disc 17 situated above the circular lamp 1 and parallel to the plane 7 thereof. The disc 17 is hollowed out with grooves forming inclined annular facets DC, Dx, xF, Gy, yH, Hz, zI, Ja, aK 1 , K 1 -b, bK 2 , K 2 -c, cK 3 , K 3 - d, dK. Two horizontal facets FG and IJ located in the plane 17 of the reflector join the facets xF and Gy, on the one hand, and the facets zI and Ja, on the other hand. The inclined facets YH and Hz have a common circular edge H, located at the intersection of the plane 17 and a fictitious cylinder whose axis coincides with the axis 11 of the circular lamp 1 and whose diameter equals the diameter the circular geometric axis passing through the point O of the circular lamp 1. These two facets are also inclined symmetrically with respect to said cylinder.

La facette annulaire tronconique D-C est raccordée à une facette annulaire horizontale C-B, située dans le plan 7 de la lampe circulaire 1. Celle-ci est prolongée par une surface conique B-A dont le sommet se situe sur l'axe 11 de la lampe circulaire 1.The tapered annular facet D-C is connected to a horizontal annular facet C-B, located in the plan 7 of the circular lamp 1. This is extended by a conical surface B-A whose top is on the axis 11 of the circular lamp 1.

Pour déterminer la position, l'inclinaison et la grandeur des facettes du réflecteur 2, on fait l'hypothèse que c'est de l'axe géométrique circulaire O de la lampe circulaire 1 que sont supposés provenir tous les rayons incidents atteignant ce demi-réflecteur.To determine the position, inclination and size of the facets of the reflector 2, we make the assumption that it is the circular geometric axis O of the circular lamp 1 that are supposed to come from all the incident rays reaching this half-reflector.

Le sommet A de la surface conique AB est situé sur l'axe de révolution 11 de la lampe circulaire 1. C'est le sommet d'un cône droit dont l'axe se confond avec l'axe de révolution de la lampe circulaire 1 et forme avec l'arête AB un angle tel que le rayon réfléchi par le plan incliné AB, au sommet A, traverse l'axe de révolution 11 de la lampe circulaire et forme avec celui-ci l'angle cible X.The top A of the conical surface AB is located on the axis of revolution 11 of the circular lamp 1. It is the summit of a right cone whose axis merges with the axis of revolution of the circular lamp 1 and form with the edge AB an angle such that the ray reflected by the inclined plane AB, at the top A, crosses the axis of 11 revolution of the circular lamp and form with this one the target angle X.

L'arête circulaire B est située sur le plan 7 de la lampe circulaire 1.The circular edge B is located on the plane 7 of the circular lamp 1.

L'arête circulaire C est également située sur le plan 7 de la lampe circulaire 1.The circular edge C is also located on the plan 7 of the circular lamp 1.

La surface annulaire tronconique C-D forme un angle de 135 degrés avec le plan 17 du réflecteur et son arête circulaire D est située sur le plan 17 du réflecteur, dans l'espace discoïdal 26. Le rayon réfléchi par la facette C-D au niveau de l'arête D est tangent à la partie intérieure du tube 1 et est parallèle à l'arête 18 de l'angle cible X.The frustoconical annular surface C-D forms an angle 135 degrees with plane 17 of the reflector and its edge circular D is located on the plane 17 of the reflector, in the disc space 26. The ray reflected by the facet C-D at the edge D is tangent to the inner part of tube 1 and is parallel to the edge 18 of the target angle X.

L'arête F est située sur le plan 17 du réflecteur, dans l'espace discoïdal 26, et le rayon réfléchi sur l'arête F de la facette horizontale F-G s'écarte du tube 1 parallèlement à l'arête 19 de l'angle cible.The edge F is located on the plane 17 of the reflector, in the discoidal space 26, and the ray reflected on the edge F of the horizontal facet F-G deviates from the tube 1 parallel to the edge 19 of the target angle.

L'arête G est située sur le plan 17 du réflecteur et le rayon réfléchi par la facette F-G sur l'arête G est tangent à la partie intérieure du tube 1 et renvoyé à l'intérieur de l'angle cible X.The edge G is located on the plane 17 of the reflector and the ray reflected by the facet F-G on the edge G is tangent to the inner part of tube 1 and returned inside the target angle X.

L'arête I est située sur le plan 17 du réflecteur et est symétrique de l'arête G par rapport à l'arête H.The edge I is located on the plane 17 of the reflector and is symmetrical with the edge G with respect to the edge H.

L'arête J est située sur le plan 17 du réflecteur et est symétrique de l'arête F par rapport à l'arête H.The edge J is located on the plane 17 of the reflector and is symmetrical with the edge F with respect to the edge H.

L'arête K est située sur le plan 17 du réflecteur, à sa limite extérieure.The edge K is located on the plane 17 of the reflector, at its outer limit.

Dans le respect de l'angle cible X et quel que soit le diamètre de la lampe circulaire 1, c'est sa distance par rapport au réflecteur qui détermine les arêtes C à J. Autrement dit, cette position génère et fige tous les plans définis entre les arêtes C et J, quitte à ce que, de par les priorités de leur interdépendance, certains soient amenés à ne pas exister.In respect of the target angle X and whatever the diameter of the circular lamp 1 is its distance relative to the reflector which determines the edges C to J. In other words, this position generates and freezes all plans defined between the edges C and J, even if, the priorities of their interdependence, some are made to not exist.

Les zones, comprises entre deux points consécutifs, peuvent être classées en trois catégories : celles dont la planéité ne doit pas être modifiée (zones 1), celles dont la planéité doit être modifiée en donnant priorité au résultat à obtenir (zones 2) et celles dont la planéité doit être modifiée en pouvant donner la priorité à un choix de réalisation tout en respectant le résultat à obtenir (zones 3)Zones, between two consecutive points, can be classified into three categories: those of which flatness should not be modified (zones 1), those whose flatness must be modified by giving priority the result to be obtained (zones 2) and those whose flatness must be modified by being able to give the priority to a choice of realization while respecting the result to be obtained (zones 3)

Les arêtes A et B déterminent une zone 1.The edges A and B determine a zone 1.

Les arêtes B et C déterminent une zone 1.Edges B and C determine a zone 1.

Les arêtes C et D déterminent une zone 1.Edges C and D determine a zone 1.

Les arêtes D et F déterminent une zone 2 ou 3.Edges D and F determine zone 2 or 3.

Les arêtes F et G déterminent une zone 1.Edges F and G determine a zone 1.

Les arêtes G et H déterminent une zone 2.The edges G and H determine an area 2.

Les arêtes H et I déterminent une zone 2.Edges H and I determine an area 2.

Les arêtes I et J déterminent une zone 1.Edges I and J determine a zone 1.

Les arêtes J et K déterminent une zone 3.The edges J and K determine a zone 3.

Les zones de type 1 sont totalement définies.Type 1 zones are fully defined.

La zone de type 2 déterminée par les arêtes G et H est une zone d'inter-réflexions dont le plan G-H doit être scindé en deux plans G-y et y-H qui le remplacent. L'angle en H du triangle GHy est défini de façon à ce que le rayon réfléchi par le plan incliné H-y dans les parages immédiats du point H soit tangent à la partie intérieure du tube. Au point y du triangle GHy, le rayon réfléchi par le plan incliné H-y passe par G.The type 2 zone determined by the edges G and H is a zone of inter-reflections whose plane G-H must split into two planes G-y and y-H that replace it. The angle in H of the triangle GHy is defined so that that the ray reflected by the inclined plane H-y in the immediate vicinity of the H point is tangent to the inside the tube. At the point y of the triangle GHy, the radius reflected by the inclined plane H-y goes through G.

La zone de type 2 déterminée par les arêtes H et I est une zone d'inter-réflexions dont le plan H-I doit être scindé en deux plans H-z et z-I qui le remplacent. L'angle en H du triangle IHz est défini de façon à ce que le rayon réfléchi par le plan incliné H-z dans les parages immédiats du point H soit tangent à la partie extérieure du tube. Au point z du triangle IHz, le rayon réfléchi par le plan incliné H-z passe par I.The type 2 zone determined by the edges H and I is a zone of inter-reflections whose plane H-I must split into two planes H-z and z-I that replace it. The angle in H of the triangle IHz is defined so that that the ray reflected by the inclined plane H-z in the immediate vicinity of the H point is tangent to the outside of the tube. At point z of the triangle IHz, the radius reflected by the inclined plane H-z passes through I.

La zone de type 3 déterminée par les arêtes J et K laisse au concepteur du réflecteur un large éventail de possibilités pour atteindre l'objectif fixé. En effet, rien n'impose de corriger en une seule fois l'angle d'attaque du rayon incident et l'objectif global peut être atteint par une succession de corrections partielles de plus faible amplitude via une suite de zones plus petites. De façon non exhaustive, les dimensions du luminaire, ses applications prévisibles, le matériau utilisé pour la réalisation du réflecteur ou tout élément objectif ou subjectif jugé utile peuvent influencer le nombre de zones qui seront retenues.Type 3 zone determined by J and K edges leaves the reflector designer a wide range of opportunities to achieve the goal. Indeed, nothing imposes to correct at one time the angle attacking the incident ray and the overall objective can to be achieved by a succession of corrections partial ones of smaller amplitude via a sequence of smaller areas. In a non-exhaustive way, dimensions of the luminaire, its foreseeable applications, the material used for the realization of the reflector or any objective or subjective element deemed useful may influence the number of areas that will be retained.

Quel que soit le choix opéré, la modification du ou des plans successifs se fait toujours suivant la logique de l'exemple ci-après.Whatever the choice made, the modification of the successive plans always follow the logic in the example below.

L'amplitude choisie détermine la distance entre l'arête a et le plan du réflecteur. La surface conique O-a passe par J. La position de l'arête K1 est définie de façon à ce que le rayon réfléchi par la facette inclinée a-K1 sur l'arête circulaire K1 soit parallèle à l'arête 18 de l'angle cible X. En cas de succession de petites zones, l'arête circulaire K1, qui se substitue à l'arête circulaire J permet via l'axe Ob de définir K2, puis K3 et ainsi de suite jusqu'à Kn (non représenté) qui doit se confondre avec l'extrémité circulaire K du réflecteur.The chosen amplitude determines the distance between the edge a and the plane of the reflector. The conical surface Oa passes through J. The position of the edge K1 is defined so that the radius reflected by the inclined facet aK 1 on the circular edge K 1 is parallel to the edge 18 of the target angle X. In case of succession of small areas, the circular edge K 1 , which is substituted for the circular edge J allows via the axis Ob to define K 2 , then K 3 and so on until K n ( not shown) which must be confused with the circular end K of the reflector.

On réalise ainsi une suite de petites zones, dont la somme des longueurs doit correspondre à la distance JK (connue) et dont la ou les amplitudes doivent permettre de respecter l'angle cible (connu). La résolution d'une suite d'équations mathématiques, à la portée de l'homme du métier, permet de déterminer le nombre optimum de ces petites zones et les amplitudes optimum et de définir de façon précise les modifications à apporter à la planéité de cette partie du réflecteur technique.A series of small areas is realized, of which the sum of the lengths must correspond to the distance JK (known) and whose amplitude (s) must allow to respect the target angle (known). The solving a sequence of mathematical equations, at the the scope of the art, allows to determine the optimum number of these small areas and the amplitudes optimum and precisely define the modifications to bring to the flatness of this part of the reflector technical.

La zone déterminée par les arêtes D et F peut être traitée de deux manières : zone 2 si la correction peut ou doit s'effectuer en une fois ou zone 3 si les corrections peuvent ou doivent être multipliées pour en diminuer l'amplitude.The area determined by the edges D and F can be treated in two ways: zone 2 if the correction can or must be done once or zone 3 if the corrections can or must be multiplied for in decrease the amplitude.

En zone de type 2 (voir figure 2), Ox passe par F. L'angle en D du triangle xDF est défini de façon à ce que le rayon réfléchi par le plan incliné x-D dans les parages immédiats du point D soit parallèle à l'arête 19 de l'angle cible X, du côté opposé à la lampe circulaire 1.In zone 2 (see figure 2), Ox goes through F. The angle at D of the triangle xDF is defined so that that the ray reflected by the inclined plane x-D in the immediate vicinity of point D is parallel to edge 19 the target angle X, the opposite side to the circular lamp 1.

Dans une variante d'exécution du réflecteur selon l'invention, représentée à la figure 3, la zone DF du réflecteur 2 est traitée comme une zone de type 3. A cet effet, dans la zone DF, le disque 17 est creusé de sillons formant des facettes annulaires inclinées F-p, p-E1, E1-q, q-E2, E2-r, r-E3, E3-s et s-D.In an alternative embodiment of the reflector according to the invention, shown in FIG. 3, the zone DF of the reflector 2 is treated as a zone of the type 3. For this purpose, in the zone DF, the disk 17 is dug with grooves. forming inclined annular facets Fp, pE 1 , E 1 -q, qE 2 , E 2 -r, rE 3 , E 3 -s and sD.

L'amplitude choisie détermine la distance entre l'arête p et le plan 17 du réflecteur. La surface conique Op passe par F. La position de l'arête E1 est définie de façon à ce que le rayon réfléchi par la facette inclinée p-E1 sur l'arête circulaire E1 soit parallèle à l'arête 19 de l'angle cible X. En cas de succession de petites zones, comme représenté à la figure 3, l'arête circulaire E1, qui se substitue à l'arête circulaire F, permet via l'axe Oq de définir E2, puis E3 et ainsi de suite jusqu'à En (non représenté) qui doit se confondre avec l'arête circulaire D.The chosen amplitude determines the distance between the edge p and the plane 17 of the reflector. The conical surface Op passes through F. The position of the edge E1 is defined so that the radius reflected by the inclined facet pE 1 on the circular edge E 1 is parallel to the edge 19 of the target angle X. In case of succession of small areas, as represented in FIG. 3, the circular edge E1, which replaces the circular edge F, allows via the axis Oq to define E 2 , then E3 and so on. up to En (not shown) which must be confused with the circular edge D.

On réalise ainsi une suite de petites zones, dont la somme des longueurs doit correspondre à la distance DF (connue) et dont la ou les amplitudes doivent permettre de respecter l'angle cible (connu). La résolution d'une suite d'équations mathématiques, à la portée de l'homme du métier, permet de déterminer le nombre optimum de ces petites zones et les amplitudes optimum et de définir de façon précise les modifications à apporter à la planéité de cette partie du réflecteur technique. Addenda Tube Lampe tubulaire fluorescente rectiligne à deux culots. Luminaire technique Luminaire comprenant au moins un tube placé devant un réflecteur ou entouré partiellement par celui-ci. Tube compact Tube à culot unique, obtenu en repliant une ou plusieurs fois un tube sur lui-même. Rendement lumineux Rapport entre le flux lumineux mesuré et la quantité d'énergie nécessaire à le produire. Rendement lumineux utile Rapport entre le niveau d'éclairement moyen mesuré sur le plan utile visé et la quantité d'énergie nécessaire pour l'obtenir. Lampe circulaire Couronne de lumière de forme circulaire ou assimilée. Plan de la lampe Plan géométrique défini par l'axe géométrique circulaire de la lampe circulaire. Axe de révolution de la lampe Axe géométrique rectiligne passant par le centre de la lampe circulaire, perpendiculairement au plande la lampe. Espace discoïdal Espace cylindrique qui s'inscrit à l'intérieur du tore annulaire constituant la lampe circulaire. Réflecteur technique Réflecteur qui, associé à la lampe circulaire, fait l'objet de l'invention et a pour mission de réfléchir vers une zone utile à éclairer, les rayons lumineux incidents émis par la lampe circulaire et qui l'atteignent. Zone utile Surface considérée comme plane, qui est disposée en regard de la lampe circulaire, perpendiculairement à son axe de révolution. Rayon incident Rayon rectiligne de lumière supposé provenir de l'axe circulaire de la lampe circulaire. Rayon réfléchi Rayon rectiligne de lumière provenant du réflecteur technique et résultant d'un rayon incident atteignant celui-ci. Plan du réflecteur Plan commun dans lequel chaque facette annulaire du réflecteur technique comprend au moins une arête circulaire. Facette inclinée Facette annulaire tronconique du réflecteur technique, qui est inclinée par rapport au plan duréflecteur. Facette plane Facette annulaire du réflecteur technique, qui est située dans le plan du réflecteur ou dans un plan parallèle à celui-ci. Modification de la planéité Creusement de sillons ou élévation de plans par rapport au plan du réflecteur, dans le but de former les facettes inclinées. Angle cible Angle défini par l'arête (ou apothème) et l'axe (ou hauteur) du cône de révolution dont le sommet se trouve sur l'axe de révolution de la lampe circulaire, au centre du plan de la lampe et dont la base se confond avec la zone utile à éclairer. A series of small areas is thus produced, the sum of the lengths of which must correspond to the distance DF (known) and whose amplitude or amplitudes must make it possible to respect the target (known) angle. The resolution of a series of mathematical equations, within the reach of those skilled in the art, makes it possible to determine the optimum number of these small areas and the optimum amplitudes and to define precisely the modifications to be made to the flatness of this area. part of the technical reflector. Addendum Tube Tubular fluorescent lamp rectilinear with two bases. Technical luminaire Luminaire comprising at least one tube placed in front of a reflector or partially surrounded by it. Compact tube Single-ended tube , obtained by folding one or more times a tube on itself. Luminous efficiency Ratio between the measured luminous flux and the amount of energy needed to produce it. Useful light output Ratio between the average illuminance level measured on the intended useful plane and the amount of energy required to obtain it. Circular lamp Crown of light of circular or similar form. Plan of the lamp Geometric plane defined by the circular geometric axis of the circular lamp . Axis of revolution of the lamp Straight geometric axis passing through the center of the circular lamp, perpendicular to the lamp. Discoidal space Cylindrical space that fits inside the annular torus constituting the circular lamp. Technical reflector Reflector which, associated with the circular lamp , is the object of the invention and is intended to reflect to a useful area to illuminate the incident light rays emitted by the circular lamp and reaching it. Useful area Surface considered flat, which is arranged opposite the circular lamp, perpendicular to its axis of revolution. Incidental ray Straight ray of light supposed to come from the circular axis of the circular lamp. Reflected ray Straight ray of light coming from the technical reflector and resulting from an incident ray reaching it. Reflector plane A common plane in which each annular facet of the technical reflector comprises at least one circular edge. Facet inclined Frustoconical annular facet of the technical reflector, which is inclined relative to the plane of the reflector. Flat facet Annular facet of the technical reflector , which is located in the plane of the reflector or in a plane parallel thereto. Modification of flatness Digging grooves or elevation planes relative to the plane of the reflector, in order to form the inclined facets. Target angle Angle defined by the ridge (or apothema) and the axis (or height) of the cone of revolution whose vertex is on the axis of revolution of the circular lamp, in the center of the plane of the lamp and whose base is confuses with the useful area to illuminate.

Claims (13)

Réflecteur conçu pour optimiser le rendement d'un luminaire équipé d'une lampe circulaire, caractérisé en ce qu'il comprend une succession de facettes annulaires (Fig. 2 : C-D, D-x, x-F, J-a, a-K1, K1-b, b-K2, K2-c, c-K3, K3-d, d-K ; Fig. 3 : C-D, D-s, s-E3, E3-r, r-E2, E2-q, q-E1, E1-p, p-F, J-a, a-K1, K1-b, b-K2, K2-c, c-K3, K3-d, d-K ), qui présentent chacune une arête circulaire dans le plan (17) du réflecteur, parallèle au plan (7) de la lampe circulaire (1) et qui sont orientées de manière que les rayons de lumière réfléchis par elles, engendrés par des rayons incidents de la lampe circulaire, forment avec l'axe de révolution (11) de ladite lampe circulaire, un angle au maximum égal à un angle cible (X) défini.Reflector designed to optimize the efficiency of a luminaire equipped with a circular lamp, characterized in that it comprises a succession of annular facets (Fig. 2: CD, Dx, xF, Ja, aK 1 , K 1 -b, bK 2 , K 2 -c, cK 3 , K 3 -d, dK; Fig. 3: CD, Ds, sE 3 , E 3 -r, rE 2 , E 2 -q, qE 1 , E 1 -p, pF, Ja, aK 1 , K 1 -b, bK 2 , K 2 -c, cK 3 , K 3 -d, dK), each of which has a circular edge in the plane (17) of the reflector, parallel to the plane ( 7) of the circular lamp (1) and which are oriented so that the rays of light reflected by them, generated by incident rays of the circular lamp, form with the axis of revolution (11) of said circular lamp, a maximum angle equal to a defined target angle (X). Réflecteur selon la revendication 1, caractérisé en ce que la lampe circulaire (1) a la forme d'un tore.Reflector according to Claim 1, characterized in that the circular lamp (1) has the shape of a torus. Réflecteur selon la revendication 1 ou 2, caractérisé en ce que la position des facettes précitées et leur orientation sont agencées de telle manière que les rayons réfléchis précités soient en dehors de la lampe circulaire (1).Reflector according to claim 1 or 2, characterized in that the position of the aforementioned facets and their orientation are arranged in such a way that the aforementioned reflected rays are outside the circular lamp (1). Réflecteur selon l'une quelconque des revendications 1 à 3, caractérisé en ce qu'il comprend une paire de facettes annulaires additionnelles (H-y et H-z) qui possèdent une arête circulaire commune (H), correspondant à l'intersection du plan (17) et d'une surface cylindrique virtuelle engendrée par l'axe géométrique circulaire (O) de la lampe circulaire, lesdites facettes annulaires additionnelles étant inclinée de telle sorte que les rayons de lumière réfléchis par elles et engendrés par des rayons incidents de la lampe circulaire soient en dehors de ladite lampe circulaire.Reflector according to any one of claims 1 to 3, characterized in that it comprises a pair of additional annular facets (Hy and Hz) which have a common circular edge (H) corresponding to the intersection of the plane (17) and a virtual cylindrical surface generated by the circular geometric axis (O) of the circular lamp, said additional annular facets being inclined so that the rays of light reflected by them and generated by incident rays of the circular lamp are outside said circular lamp. Réflecteur selon la revendication 4, caractérisé en ce que les facettes annulaires additionnelles (H-y et H-z) précitées sont symétriques par rapport à la surface cylindrique virtuelle susdite.Reflector according to claim 4, characterized in that the additional annular facets (Hy and Hz) above are symmetrical with respect to the virtual cylindrical surface aforesaid. Réflecteur selon l'une quelconque des revendications 1 à 5, caractérisé en ce que les facettes précitées sont formées par des sillons creusés dans un disque situé dans le plan précité du réflecteur.Reflector according to any one of claims 1 to 5, characterized in that the aforementioned facets are formed by grooves formed in a disk located in the aforementioned plane of the reflector. Réflecteur selon l'une quelconque des revendications 1 à 6, caractérisé en ce qu'il comprend une surface (tron)conique (D-C, B-A) dans l'espace discoïdal (26) délimité par la lampe circulaire (1).Reflector according to any one of claims 1 to 6, characterized in that it comprises a conical surface (tron) (DC, BA) in the disc space (26) defined by the circular lamp (1). Réflecteur selon la revendication 7, caractérisé en ce que la surface conique (B-A) a son sommet (A) sur l'axe de révolution (11) de la lampe circulaire (1) et sa base (B) dans le plan (7) de ladite lampe circulaire.Reflector according to Claim 7, characterized in that the conical surface (BA) has its vertex (A) on the axis of revolution (11) of the circular lamp (1) and its base (B) in the plane (7) of said circular lamp. Réflecteur selon la revendication 7 ou 8, caractérisé en ce que la surface tronconique (C-D) fait, avec l'axe de révolution (11) de la lampe circulaire (1), un angle tel qu'à tout rayon incident de la lampe circulaire, qui frappe ladite surface tronconique, il corresponde un rayon réfléchi dans une direction faisant, avec ledit axe de révolution, un angle inférieur ou égal à l'angle cible (X) précité.Reflector according to Claim 7 or 8, characterized in that the frustoconical surface (CD) forms an angle with the axis of revolution (11) of the circular lamp (1) such that at any incident radius of the circular lamp , which strikes said frustoconical surface, it corresponds to a ray reflected in a direction making, with said axis of revolution, an angle less than or equal to the aforementioned target angle (X). Réflecteur selon la revendication 9, caractérisé en ce que la surface tronconique (C-D) fait idéalement un angle de 135 degrés avec l'axe de révolution (11) susdit.Reflector according to claim 9, characterized in that the frustoconical surface (CD) is ideally at an angle of 135 degrees with the axis of revolution (11) aforesaid. Réflecteur selon l'une quelconque des revendications 8 à 10, caractérisé en ce que la surface conique (B-A) fait, avec l'axe de révolution (11) de la lampe circulaire (1), un angle tel qu'à tout rayon incident de la lampe circulaire, qui frappe ladite surface conique, il corresponde un rayon réfléchi dans une direction faisant, avec ledit axe de révolution, un angle inférieur ou égal à l'angle cible X précité.Reflector according to any one of Claims 8 to 10, characterized in that the conical surface (BA) makes, with the axis of revolution (11) of the circular lamp (1), an angle such that at any incident ray of the circular lamp, which strikes said conical surface, it corresponds to a ray reflected in a direction making, with said axis of revolution, an angle less than or equal to the aforementioned target angle X. Réflecteur selon la revendication 11, caractérisé en ce que la position de la surface tronconique (C-D) est réglée de manière que tout rayon lumineux réfléchi par elle traverse l'espace discoïdal (26) précité.Reflector according to Claim 11, characterized in that the position of the frustoconical surface (CD) is adjusted so that any light beam reflected by it passes through the above-mentioned disc space (26). Luminaire comprenant une lampe circulaire (1) et un réflecteur (2) conforme à l'une quelconque des revendications 1 à 12.Luminaire comprising a circular lamp (1) and a reflector (2) according to any one of Claims 1 to 12.
EP03024290A 2003-10-23 2003-10-23 Reflector for a circular lamp Expired - Lifetime EP1526329B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE60308030T DE60308030D1 (en) 2003-10-23 2003-10-23 Reflector for an annular fluorescent lamp
AT03024290T ATE338247T1 (en) 2003-10-23 2003-10-23 REFLECTOR FOR A RING-SHAPED FLUORESCENT LAMP
EP03024290A EP1526329B1 (en) 2003-10-23 2003-10-23 Reflector for a circular lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP03024290A EP1526329B1 (en) 2003-10-23 2003-10-23 Reflector for a circular lamp

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EP1526329A1 true EP1526329A1 (en) 2005-04-27
EP1526329B1 EP1526329B1 (en) 2006-08-30

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2415635A (en) * 1944-05-26 1947-02-11 Eastman Kodak Co Illumination arrangement for photographic enlargers
FR1141825A (en) * 1956-02-28 1957-09-09 Multicurve toric reflector with differential conical equations
DE2615446A1 (en) * 1976-04-09 1977-10-20 Zimmermann Kg Rudolf Corrugated lamp reflector with cooling air openings - has concentric rings with annular spaces between allowing circulation of air
US4280167A (en) * 1979-09-13 1981-07-21 Ellett Edwin W Operating room surgical lamp
US5062030A (en) * 1990-12-10 1991-10-29 Figueroa Luisito A Customized light reflector
US5832362A (en) * 1997-02-13 1998-11-03 The Procter & Gamble Company Apparatus for generating parallel radiation for curing photosensitive resin
EP1152187A2 (en) * 2000-05-02 2001-11-07 C.R.F. Società Consortile per Azioni Lighting device

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2415635A (en) * 1944-05-26 1947-02-11 Eastman Kodak Co Illumination arrangement for photographic enlargers
FR1141825A (en) * 1956-02-28 1957-09-09 Multicurve toric reflector with differential conical equations
DE2615446A1 (en) * 1976-04-09 1977-10-20 Zimmermann Kg Rudolf Corrugated lamp reflector with cooling air openings - has concentric rings with annular spaces between allowing circulation of air
US4280167A (en) * 1979-09-13 1981-07-21 Ellett Edwin W Operating room surgical lamp
US5062030A (en) * 1990-12-10 1991-10-29 Figueroa Luisito A Customized light reflector
US5832362A (en) * 1997-02-13 1998-11-03 The Procter & Gamble Company Apparatus for generating parallel radiation for curing photosensitive resin
EP1152187A2 (en) * 2000-05-02 2001-11-07 C.R.F. Società Consortile per Azioni Lighting device

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ATE338247T1 (en) 2006-09-15
EP1526329B1 (en) 2006-08-30
DE60308030D1 (en) 2006-10-12

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