WO2006111996A1 - Colour filter metering device for sources of light - Google Patents

Colour filter metering device for sources of light Download PDF

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Publication number
WO2006111996A1
WO2006111996A1 PCT/IT2006/000256 IT2006000256W WO2006111996A1 WO 2006111996 A1 WO2006111996 A1 WO 2006111996A1 IT 2006000256 W IT2006000256 W IT 2006000256W WO 2006111996 A1 WO2006111996 A1 WO 2006111996A1
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WO
WIPO (PCT)
Prior art keywords
section
metering device
data
filter
colour
Prior art date
Application number
PCT/IT2006/000256
Other languages
French (fr)
Original Assignee
Francesco, Lina
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Francesco, Lina filed Critical Francesco, Lina
Publication of WO2006111996A1 publication Critical patent/WO2006111996A1/en

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/46—Measurement of colour; Colour measuring devices, e.g. colorimeters
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/46—Measurement of colour; Colour measuring devices, e.g. colorimeters
    • G01J3/463—Colour matching
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/251—Colorimeters; Construction thereof
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/02—Details
    • G01J3/0267—Sample holders for colorimetry

Definitions

  • the present invention relates to a colour filter metering device for sources of light, particularly recommended for identifying all the characteristics of a gel filter, such as identification number, colour, brand, etc.
  • Background Art As it is known, in lighting engineering, photography, cinema and the theatre, particular gel filters with various colour tones are used for the colouring of spotlights. These filters serve to give the spotlight, which emits white light, different and particular colour tones in order to create specific lighting effects, required by the scenography, to obtain precise atmospheres or to light up a subject with a given colour.
  • gel filters are composed of a thin transparent plastic film, similar in consistency and material to cinematographic film.
  • a film is used to realise the aforesaid filters onto which a very thin layer of paint is deposited, which renders the film the colour desired.
  • the gel filters available on the market today come in the form of sheets or rolls and are coded, which means it is possible to trace the filter's brand, model and colour grade.
  • the filters When the filters have to be used on spotlights, the user simply has to cut and shape a part of the sheet according to the dimensions of the spotlight and the light surface to cover.
  • the gel filters described earlier have diverse drawbacks when they are used.
  • a further drawback derives from the fact that a user is forced to compare the pieces of gel filters with the numbered samples in order to identify the one used and to trace the brand, colour grading, etc.
  • the aim of the present invention is essentially to solve the problems of the commonly known technique, overcoming the aforesaid drawbacks, by means of a colour filter metering device for sources of light able to identify the colour tone automatically.
  • a second aim of the present invention is to realise a colour filter metering device for sources of light able to identify the brand, model and colour number of the filter under examination very quickly.
  • a further aim of the present invention is to have a colour filter metering device for sources of light which is able to identify any type of filter accurately and to signal when the identification cannot be effected.
  • a still further aim of the present invention is to have a colour filter metering device for sources of light which can be utilised simply, easily and quickly.
  • a further but not final aim of the present invention is to realise a colour filter metering device for sources of light which is simple to realise and functions well.
  • figure 1 shows, schematically and in a perspective view, a colour filter metering device for sources of light constituting the object of the present invention.
  • figure 2 shows a sectioned view of the device in figure 1 ;
  • figure 3 shows an exploded view of the components of the metering device in question.
  • number 1 denotes a colour filter metering device for sources of light according to the present invention as a whole.
  • the colour filter metering device for sources of light 1 is essentially composed of three sections: a first section 2 for reading and interpreting the colour tone, a second section 3 for collating and handling data and a third section 4 for data viewing.
  • the first section 2 is formed of an illuminator 20, a couple of flat elements 21 positioned mutually parallel in order to create a reading slot 22 and envisaged to hold, inside them, a filter to view and a sensor 23 suitable for converting light and the colour tone received into an electrical impulse that will be sent on to the second section 3.
  • the illuminator 20 is white in colour as the optical level for the measuring is considered optimal since the emission spectrum is very linear.
  • the couple of flat elements 21 is realised of elements made of a plastic material, transparent Plexiglas in the case in question.
  • the senor 23 is able to convert the coloured light received into a square wave proportional to the intensity of the light irradiated and send this datum to the section 3 where it will be processed as described below.
  • the second section 3 is essentially composed of handling and control means 30 which are assigned to process the data coming from the first section 2 following the reading effected by the sensor 23 and collate them with the data present inside, which have been entered and stored in a special memory station 31.
  • the handling and control means 30 are constituted of a microprocessor 32.
  • the handling and control means 30 are predisposed to collate the datum sent from the first section 2 with all the data contained in the memory 31, finding the combination which permits the identification of the type of gel filter under examination, with the parameters relating to the brand, colour tone and identification code.
  • the handling and control means 30 are able to identify and signal to the user any gel filters which feature the same colour tone but are different brands and in consequence prove to be complementary.
  • the third section 4, for viewing the data is composed of a liquid crystal viewer 40 which displays the data for the filter analysed (brand, model and colour number) sent from the second section 3.
  • the metering device 1 is powered by a power source 6 located inside said device.
  • the power source can be constituted of one or more batteries or the electricity mains, subject to the interposition of a transformer.
  • the power source is constituted of rechargeable lithium batteries.
  • the metering device 1 is equipped with a commonly known type of USB jack 5 for computers so that it can be connected to a personal computer to enter new data or programs in the metering device or to download them from the metering device to the personal computer.
  • the metering device in question by means of the handling and control means 30, can be updated by entering further data relating to the new filter colour in the memory.
  • a user to update the memory station with the data from a new colour filter, a user must simply insert the filter in the slot 22 present in the couple of elements 21 and the sensor 23 will effect a reading by sending the data read to the handling and control means which, after performing a collation with all the data present in the memory and not finding a match, will display a message on the viewer 40 identifying the filter as unknown.
  • the user simply has to enter the new data (brand, model and identification number) relating to the colour filter in the memory using the special keys 7 and then store them.
  • the metering device will be able to recognise and identify it.
  • the metering device 1 in question is devised to operate from a resting condition in which it is inactive and no colour filter is inserted in the slot created by the couple of flat elements to an operative condition in which a filter is present in the slot and said filter is read and identified, with its identification data displayed on the viewer.
  • the handling and control means will effect a collation of the data sent from the sensor with all the data contained in the memory station, identifying the technical characteristics of the filter and, following this, the information will be displayed on the viewer for quick and easy reading by the user who, in this way, will know the brand, model and the identification number of the filter under examination.
  • the handling and control means will display a message on the viewer informing the user that the filter is unknown, and that if the user is aware of the filter's identifying data, then he should enter them using the memory keys.
  • the metering device in question is able to verify the colour tone automatically.
  • the colour filter metering device for sources of light is able to identify the filter brand, model and the colour identification number of the filter under examination very quickly and accurately.
  • the colour filter metering device in question it is possible to identify any type of filter in an unequivocal manner unlike as happened with the commonly known technique wherein the identification was effected with the naked eye on the basis of the user's personal experience.
  • the metering device according to the present invention has limited dimensions, as a result of which it is practical, convenient and easy to transport and use, thanks also to the battery power unit.
  • the metering device consents a notable saving in terms of materials as there is no longer any need to replace filters every time, as happened with the commonly known technique to save the operator time, and as a consequence there is a considerable reduction in the material discarded in terms of both filters and scraps that are eliminated to realise new filters, resulting in a drastic diminution in highly polluting materials.
  • a further advantage of the present metering device derives from the fact that it has limited realisation and maintenance costs.
  • a further but not final advantage of the present invention is that it proves to be simple to realise and functions well.

Abstract

The invention describes a colour filter metering device for sources of light essentially comprising three sections: a first section (2) for reading and interpreting the colour tone, a second section (3) for collating and handling data and a third section (4) for data viewing. In particular, the first section (2) is constituted of an illuminator (20), a couple of flat elements (21) positioned mutually parallel in order to create a reading slot (22) and envisaged to hold, inside them, a filter to view and a sensor (23) suitable for converting light and the colour tone received into an electrical impulse that will be sent on to the second section (3). Furthermore, the second section (3) is essentially composed of handling and control means (30) which are assigned to process the data coming from the first section (2) following the reading effected by the sensor (23) and collate them with the data present inside, which have been entered and stored in a special memory station (31). Lastly, the third section (4) for viewing the data is composed of a liquid crystal viewer (40) which shows the data for the filter analysed (brand, model and colour number) sent from the second section (3) and a plurality of keys (7) for data entry. The metering device is devised to operate from a resting condition in which it is inactive and no colour filter is inserted in the slot created by the couple of flat elements to an operative condition in which a filter is present in the slot and said filter is read and identified, with its identification data displayed on the viewer.

Description

DESCRIPTION "COLOUR FILTER METERING DEVICE FOR SOURCES OF
LIGHT". Technical Field The present invention relates to a colour filter metering device for sources of light, particularly recommended for identifying all the characteristics of a gel filter, such as identification number, colour, brand, etc. Background Art As it is known, in lighting engineering, photography, cinema and the theatre, particular gel filters with various colour tones are used for the colouring of spotlights. These filters serve to give the spotlight, which emits white light, different and particular colour tones in order to create specific lighting effects, required by the scenography, to obtain precise atmospheres or to light up a subject with a given colour.
At present, gel filters are composed of a thin transparent plastic film, similar in consistency and material to cinematographic film. In greater detail, a film is used to realise the aforesaid filters onto which a very thin layer of paint is deposited, which renders the film the colour desired.
The gel filters available on the market today come in the form of sheets or rolls and are coded, which means it is possible to trace the filter's brand, model and colour grade. When the filters have to be used on spotlights, the user simply has to cut and shape a part of the sheet according to the dimensions of the spotlight and the light surface to cover.
The gel filters described earlier have diverse drawbacks when they are used.
A first drawback that is encountered emerges due to the fact that, often, the coloured gel filters utilised have already been put to use on previous occasions which means it happens that the user is not able to trace the brand and model and the colour identification number because the identification codes get lost during the cutting operations as they are not printed all over the sheet.
A further drawback derives from the fact that a user is forced to compare the pieces of gel filters with the numbered samples in order to identify the one used and to trace the brand, colour grading, etc.
The comparison operation is carried out by the user with the naked eye but it is extremely complex, despite experience, to establish exactly which gel filter it is as it is very difficult to notice small differences since there are thousands of colour tones available on the market and there does not exist a universal, codified classification for all manufacturers.
In light of the above, it happens that the user of the gel filters mentioned earlier often prefers to prepare new filters for each application, with a consequent notable waste of material, rather than having to refer back to the reference samples. In fact, for the user, having to check the filters one by one against the reference samples proves a long job, which is stressful for the eyesight and is not profitable in terms of time and operating costs. In addition, the material discarded as a result of the filters and scraps that are eliminated is extremely polluting and difficult to dispose of as it is a plastic material.
Disclosure of Invention
The aim of the present invention is essentially to solve the problems of the commonly known technique, overcoming the aforesaid drawbacks, by means of a colour filter metering device for sources of light able to identify the colour tone automatically.
A second aim of the present invention is to realise a colour filter metering device for sources of light able to identify the brand, model and colour number of the filter under examination very quickly.
A further aim of the present invention is to have a colour filter metering device for sources of light which is able to identify any type of filter accurately and to signal when the identification cannot be effected.
A still further aim of the present invention is to have a colour filter metering device for sources of light which can be utilised simply, easily and quickly.
A further but not final aim of the present invention is to realise a colour filter metering device for sources of light which is simple to realise and functions well.
These and still further aims, which will better emerge over the course of the present description, are essentially achieved by the colour filter metering device for sources of light outlined in the claims that follow. These characteristics and other advantages will better emerge in the detailed description that follows of the colour filter metering device for sources of light according to this invention, described purely in the form of a non-limiting example in the plates enclosed, in which: figure 1 shows, schematically and in a perspective view, a colour filter metering device for sources of light constituting the object of the present invention. figure 2 shows a sectioned view of the device in figure 1 ; figure 3 shows an exploded view of the components of the metering device in question.
With reference to the aforesaid figures, and in particular figure 1, number 1 denotes a colour filter metering device for sources of light according to the present invention as a whole.
The colour filter metering device for sources of light 1 is essentially composed of three sections: a first section 2 for reading and interpreting the colour tone, a second section 3 for collating and handling data and a third section 4 for data viewing.
According to the present invention, the first section 2 is formed of an illuminator 20, a couple of flat elements 21 positioned mutually parallel in order to create a reading slot 22 and envisaged to hold, inside them, a filter to view and a sensor 23 suitable for converting light and the colour tone received into an electrical impulse that will be sent on to the second section 3. In greater detail, the illuminator 20 is white in colour as the optical level for the measuring is considered optimal since the emission spectrum is very linear.
Furthermore, the couple of flat elements 21 is realised of elements made of a plastic material, transparent Plexiglas in the case in question.
In addition, the sensor 23 is able to convert the coloured light received into a square wave proportional to the intensity of the light irradiated and send this datum to the section 3 where it will be processed as described below.
In the present embodiment, the second section 3 is essentially composed of handling and control means 30 which are assigned to process the data coming from the first section 2 following the reading effected by the sensor 23 and collate them with the data present inside, which have been entered and stored in a special memory station 31.
In particular, in the embodiment described, the handling and control means 30 are constituted of a microprocessor 32.
In detail, the handling and control means 30 are predisposed to collate the datum sent from the first section 2 with all the data contained in the memory 31, finding the combination which permits the identification of the type of gel filter under examination, with the parameters relating to the brand, colour tone and identification code. In addition to the description above, the handling and control means 30, once the filter has been identified, send the data with the identifying elements to the third section 4. In particular, the handling and control means 30 are able to identify and signal to the user any gel filters which feature the same colour tone but are different brands and in consequence prove to be complementary.
The third section 4, for viewing the data, is composed of a liquid crystal viewer 40 which displays the data for the filter analysed (brand, model and colour number) sent from the second section 3.
Furthermore, the metering device 1 is powered by a power source 6 located inside said device. The power source can be constituted of one or more batteries or the electricity mains, subject to the interposition of a transformer. In the present embodiment, the power source is constituted of rechargeable lithium batteries.
Lastly, the metering device 1 is equipped with a commonly known type of USB jack 5 for computers so that it can be connected to a personal computer to enter new data or programs in the metering device or to download them from the metering device to the personal computer. In addition to the description above, the metering device in question, by means of the handling and control means 30, can be updated by entering further data relating to the new filter colour in the memory. In greater detail, to update the memory station with the data from a new colour filter, a user must simply insert the filter in the slot 22 present in the couple of elements 21 and the sensor 23 will effect a reading by sending the data read to the handling and control means which, after performing a collation with all the data present in the memory and not finding a match, will display a message on the viewer 40 identifying the filter as unknown. At this point, the user simply has to enter the new data (brand, model and identification number) relating to the colour filter in the memory using the special keys 7 and then store them.
Following this, every time that particular filter is inserted in the slot, the metering device will be able to recognise and identify it.
The metering device 1 in question is devised to operate from a resting condition in which it is inactive and no colour filter is inserted in the slot created by the couple of flat elements to an operative condition in which a filter is present in the slot and said filter is read and identified, with its identification data displayed on the viewer.
After this predominantly structural description, there will now follow a description of the invention's functioning.
When a user has to verify the exact colour tone of a gel filter for spotlights, he simply has to insert the filter to check in the special slot present between the couple of flat elements, where it will be illuminated by the beam of white light emitted by the illuminator, permitting the sensor to effect a reading and send the data read to the handling and control means.
At this point, the handling and control means will effect a collation of the data sent from the sensor with all the data contained in the memory station, identifying the technical characteristics of the filter and, following this, the information will be displayed on the viewer for quick and easy reading by the user who, in this way, will know the brand, model and the identification number of the filter under examination.
As mentioned earlier, when a user inserts a filter that is unknown in relation to those catalogued in the memory, the handling and control means will display a message on the viewer informing the user that the filter is unknown, and that if the user is aware of the filter's identifying data, then he should enter them using the memory keys.
In this way this invention achieves the aims set.
In fact, the metering device in question is able to verify the colour tone automatically.
Furthermore, the colour filter metering device for sources of light is able to identify the filter brand, model and the colour identification number of the filter under examination very quickly and accurately.
Advantageously, with the colour filter metering device in question it is possible to identify any type of filter in an unequivocal manner unlike as happened with the commonly known technique wherein the identification was effected with the naked eye on the basis of the user's personal experience.
In addition, the metering device according to the present invention has limited dimensions, as a result of which it is practical, convenient and easy to transport and use, thanks also to the battery power unit.
Furthermore the metering device in question proves to be quick and easy to use, practical and very versatile.
Advantageously, the metering device consents a notable saving in terms of materials as there is no longer any need to replace filters every time, as happened with the commonly known technique to save the operator time, and as a consequence there is a considerable reduction in the material discarded in terms of both filters and scraps that are eliminated to realise new filters, resulting in a drastic diminution in highly polluting materials.
A further advantage of the present metering device derives from the fact that it has limited realisation and maintenance costs.
A further but not final advantage of the present invention is that it proves to be simple to realise and functions well.
Naturally, numerous modifications and variants can be applied to this invention while still remaining within the scope of the invention as claimed herein.

Claims

1) A colour filter metering device for sources of light characterised by the fact that said device essentially comprises three sections: a first section (2) for reading and interpreting the colour tone, a second section (3) for collating and handling data and a third section (4) for data viewing, in which:
- said first section
(2) is formed of an illuminator (20), a couple of flat elements (21) positioned mutually parallel in order to create a reading slot (22) and envisaged to hold, inside them, a filter to view and a sensor (23) suitable for converting light and the colour tone received into an electrical impulse that will be sent on to the second section
(3);
- said second section (3) is essentially composed of handling and control means (30) which are assigned to process the data coming from the first section (2) following the reading effected by the sensor (23) and collate them with the data present inside, which have been entered and stored in a special memory station (31);
- said third section (4) for viewing the data is composed of a liquid crystal viewer (40) which shows the data for the filter analysed (brand, model and identification number) sent from the second section (3) and a plurality of keys (7) for data entry, said metering device being devised to operate from a resting condition in which it is inactive and no colour filter is inserted in the slot created by the couple of flat elements to an operative condition in which a filter is present in the slot and said filter is read and identified, with its identification data displayed on the viewer.
2) A colour filter metering device for sources of light according to claim 1, characterised by the fact that said metering device is powered by a power source (6) located inside said device.
3) A colour filter metering device for sources of light according to claim 1, characterised by the fact that said illuminator (20) is white in colour.
4) A colour filter metering device for sources of light according to claim 1, characterised by the fact that said couple of flat elements (21) is realised of elements made of a plastic material, in particular, transparent Plexiglas.
5) A colour filter metering device for sources of light according to claim 1, characterised by the fact that said handling and control means (30) are constituted of a microprocessor (32).
6) A colour filter metering device for sources of light according to claim 1, characterised by the fact that said power source (6) is constituted of one or more batteries or the electricity mains, subject to the interposition of a transformer. 7) A colour filter metering device for sources of light according to claim 6, characterised by the fact that said power source (6) is constituted of rechargeable lithium batteries.
8) A colour filter metering device for sources of light according to claim 1, characterised by the fact that said metering device comprises a USB-type jack (5) for computers for connection to a personal computer.
9) A colour filter metering device for sources of light according to claim 1, characterised by the fact that said viewer (40) is of a liquid crystal type.
PCT/IT2006/000256 2005-04-19 2006-04-18 Colour filter metering device for sources of light WO2006111996A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMN2005A000025 2005-04-19
IT000025A ITMN20050025A1 (en) 2005-04-19 2005-04-19 COLOR FILTER METER FOR LIGHT SOURCES

Publications (1)

Publication Number Publication Date
WO2006111996A1 true WO2006111996A1 (en) 2006-10-26

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ID=36677150

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PCT/IT2006/000256 WO2006111996A1 (en) 2005-04-19 2006-04-18 Colour filter metering device for sources of light

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IT (1) ITMN20050025A1 (en)
WO (1) WO2006111996A1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3935436A (en) * 1973-04-24 1976-01-27 Greenwood Mills Color measuring spectrophotometer
US5369494A (en) * 1993-04-12 1994-11-29 X-Rite, Incorporated Portable scanning colorimeter
FR2817616A1 (en) * 2000-12-05 2002-06-07 David Rosati Device for testing filtration quality color by color from the ultraviolet to the infrared of e.g. sunglasses by use of quasi- monochromatic light sources and a polychromatic light source so that separate filters are not needed

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3935436A (en) * 1973-04-24 1976-01-27 Greenwood Mills Color measuring spectrophotometer
US5369494A (en) * 1993-04-12 1994-11-29 X-Rite, Incorporated Portable scanning colorimeter
FR2817616A1 (en) * 2000-12-05 2002-06-07 David Rosati Device for testing filtration quality color by color from the ultraviolet to the infrared of e.g. sunglasses by use of quasi- monochromatic light sources and a polychromatic light source so that separate filters are not needed

Also Published As

Publication number Publication date
ITMN20050025A1 (en) 2006-10-20

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