CN100517707C - Light-emitting diode arrangement, optical recording device and method for the pulsed operation of at least one light-emitting diode - Google Patents
Light-emitting diode arrangement, optical recording device and method for the pulsed operation of at least one light-emitting diode Download PDFInfo
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- CN100517707C CN100517707C CNB2005800222260A CN200580022226A CN100517707C CN 100517707 C CN100517707 C CN 100517707C CN B2005800222260 A CNB2005800222260 A CN B2005800222260A CN 200580022226 A CN200580022226 A CN 200580022226A CN 100517707 C CN100517707 C CN 100517707C
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L25/00—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof
- H01L25/03—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes
- H01L25/04—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers
- H01L25/075—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group H01L33/00
- H01L25/0753—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group H01L33/00 the devices being arranged next to each other
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/40—Details of LED load circuits
- H05B45/42—Antiparallel configurations
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
- H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
- H01L2224/4805—Shape
- H01L2224/4809—Loop shape
- H01L2224/48091—Arched
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
- H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
- H01L2224/481—Disposition
- H01L2224/48151—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive
- H01L2224/48221—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked
- H01L2224/48245—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being metallic
- H01L2224/48247—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being metallic connecting the wire to a bond pad of the item
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
- H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
- H01L2224/484—Connecting portions
- H01L2224/48463—Connecting portions the connecting portion on the bonding area of the semiconductor or solid-state body being a ball bond
- H01L2224/48465—Connecting portions the connecting portion on the bonding area of the semiconductor or solid-state body being a ball bond the other connecting portion not on the bonding area being a wedge bond, i.e. ball-to-wedge, regular stitch
Abstract
The device comprises two diodes (1,2) which are connected in antiparallel. A pulse-width modulator (8) is provided for supplying current to the light-emitting diodes in alternating directions. The diodes are preferably mounted in the same housing, and/or emit light of different wavelengths, e.g. red and blue. A luminescence-conversion material may be provided.
Description
The present invention relates to a kind of light-emitting diode assembly, a kind of optical recording apparatus and a kind of method that is used at least one light-emitting diode of pulsed drive.
Document US 4,843,416 have illustrated a kind of autofocus camera that has radiative diode and produce the circuit of pulse.Circuit by producing pulse produces single flash of light by diode.Photodiode receives the light pulse by object reflected.Determine distance by the amplitude of received light pulse apart from object.
Document US 6,185,240 have illustrated a kind of laser diode, are connected to the second diode inverse parallel this laser diode.At this, second diode is to make laser diode avoid the protective device of static discharge (ESD-electro static discharge).Second diode prevents that laser diode is subjected to the influence of ESD potential pulse, and this ESD potential pulse can occur in the choked flow direction (Sperrrichtung) of laser diode.
Document WO 98/12757 has illustrated a kind of semiconductor device with radiation-emitting semiconductor chip, the electromagnetic radiation in the blue spectral range of this radiation-emitting semiconductor chip radiation between 420nm and 460nm.Semiconductor chip to small part is surrounded by filler, this filler comprises the luminescent conversion material, and this luminescent conversion material is suitable for the part by the radiation that semiconductor chip sent is converted to the radiation of longer wavelength, preferably converts radiation in the yellow spectrum scope to.Thereby, semiconductor device radiation mixed radiation, this mixed radiation by the carrying out of radiation the composition of wavelength Conversion and the initial radiation of semiconductor chip form.Preferably, semiconductor device radiates white light.
Task of the present invention is a kind of light-emitting diode assembly of explanation, particularly can adopt this light-emitting diode assembly in many-side.In addition, task of the present invention is that a kind of the have compactness as far as possible of this light-emitting diode assembly and the optical recording apparatus of power saving are described.In addition, task of the present invention is a kind of light-emitting diode assembly of explanation, and this light-emitting diode assembly is suitable for being used in the optical recording apparatus.A kind of method that is used for the special power saving of at least one light-emitting diode of pulsed drive has been described in addition.
A kind of light-emitting diode assembly with two light-emitting diodes has been described, these two light-emitting diodes connect on inverse parallel ground each other.That is to say,, then on the choked flow direction, connect another light-emitting diode connecting one of light-emitting diode on the conducting direction if on light-emitting diode assembly, apply external voltage.These light-emitting diodes have at least one light-emitting diode chip for backlight unit respectively.Possible in addition is that these light-emitting diodes constitute by single light-emitting diode chip for backlight unit respectively.
In addition, be provided with a kind of device, this device is suitable for utilizing the electric current of direction alternation to power for light-emitting diode.For example that is to say that each in these two light-emitting diodes can alternately be connected by this device on conducting direction and choked flow direction.If at the voltage that applies on one of these two light-emitting diodes on the choked flow direction, then on another light-emitting diode, apply the voltage on the conducting direction.Therefore the light-emitting diode of light-emitting diode assembly is suitable for alternately launching electromagnetic radiation.This external this also possible be, on this light-emitting diode, not apply voltage at sometime at interval.
That is a kind of light-emitting diode assemblies with two light-emitting diodes that connect to inverse parallel each other have been described, and a kind of device is set in this light-emitting diode assembly, this device is suitable for, and the electric current that utilizes the direction alternation is this light-emitting diode power supply.For example, this device is a power supply, and this power supply is suitable for being independently of each other the light-emitting diode power supply on conducting direction.
In the form of implementation of light-emitting diode assembly, but but this device is suitable for utilizing the electric current of predetermined direction and intensity to be light-emitting diode assembly power supply preset time interval.By this way, when driven for emitting lights diode apparatus preset time interval, light-emitting diode can alternately be launched electromagnetic radiation.At this, but the intensity of electromagnetic radiation can regulate by predetermined current intensity, utilize this electric current to come on conducting direction, to drive corresponding light-emitting diode.
Preferably, the voltage that is applied on the light-emitting diode assembly is like this selected littlely at this, and that the reflective diode that consequently wherein applies the voltage on the choked flow direction is not damaged.That is to say that the voltage that is applied does not surpass the puncture voltage of diode.
In light-emitting diode assembly by this device power supply, the time interval of light-emitting diode assembly but the electric current that for example can so select predetermined direction is flowed through respectively, thus long on other direction at the flow through time ratio of light-emitting diode assembly of electric current on a certain direction.Realize thus that advantageously promptly when light-emitting diode assembly moved, one of these two light-emitting diodes were than another light-emitting diode emission longer time interval of electromagnetic radiation.
In addition, this device preferably suitable for, can select the electric current on the direction greater than the electric current on the other direction.Therefore, for example when light-emitting diode assembly moves, additionally always on conducting direction, be powered longer time light-emitting diode at interval flowing through on the conducting direction than the stronger electric current of the electric current of other light-emitting diode of flowing through.Then, another light-emitting diode is driven the shorter time interval with littler current strength on conducting direction., possible in addition is that these two light-emitting diodes are driven the time interval of equal length respectively with the current strength that equates respectively on conducting direction.
This device particularly preferably is pulse width modulation circuit.Possiblely in this pulse width modulation circuit be, but but as far as possible accurately and the time interval that should flow through of the electric current of adjusting current strength, the sense of current and predetermined strength and predetermined direction in simple as far as possible mode.
In the preferred form of implementation of light-emitting diode assembly, light-emitting diode is disposed in the common shell.For this reason, these light-emitting diodes for example all are placed in the groove of housing base.
In the particularly preferred form of implementation of light-emitting diode assembly, light-emitting diode is suitable for launching the electromagnetic radiation of different wave length.For example, one of light-emitting diode can be suitable for launching the light in the red color spectrum range.Then, another light-emitting diode for example is suitable for launching the light in the blue spectral range.
In other form of implementation of light-emitting diode assembly the luminescent conversion material is set, this luminescent conversion material is suitable for wavelength Conversion is carried out in the electromagnetic radiation of being launched by one of light-emitting diode at least in part.That is to say, on radiation direction, the luminescent conversion material is placed after at least one light-emitting diode that this luminescent conversion absorbed part is by the light-emitting diode institute's radiation emitted and the radiation of then launching another wavelength.Preferably, luminescent conversion material emission wavelength is higher than at first the radiation by the wavelength of light-emitting diode institute radiation emitted.By with the carrying out of this radiation the composition of wavelength Conversion mix with the radiation that goes out by the light-emitting diode original transmission and obtain final radiation.
Also can carry out wavelength Conversion by the luminescent conversion material fully basically by the radiation that light-emitting diode is launched, for example so that convert invisible radiation to visible light.When application is comprised at least two kinds of different luminescent substances (Leuchtstoff) in the luminescent conversion material, can produce mixed light by this way by these two kinds of luminescent substance institute radiation emitted.For example illustrated in document WO 98/12757 to be suitable for the organic of wavelength Conversion electromagnetic radiation and inorganic light-emitting material that the content that the document relates to luminescent substance just is included into by returning to draw at this in this point.
In another form of implementation of light-emitting diode assembly, the luminescent conversion material for example can be applied in the radiation coupling output face of at least one light-emitting diode by thin layer.But also possible is that the luminescent conversion material only is applied on one of light-emitting diode with thin layer.In addition, also possible is that the luminescent conversion material that can comprise different luminescent substances is coated to respectively on these two light-emitting diodes.At this, luminescent substance can be complementary by the corresponding electromagnetic radiation that light-emitting diode produced.
Possible in other form of implementation of light-emitting diode assembly is that light-emitting diode is surrounded by common filler.Preferably, this filler comprises the luminescent conversion material.One of light-emitting diode particularly preferably is suitable for the electromagnetic radiation that emission wavelength penetrates filler to a great extent unobstructedly.In this, " unobstructed to a great extent " is meant, by the electromagnetic radiation that light-emitting diode sent is not carried out wavelength Conversion or only carried out wavelength Conversion indistinctively by the luminescent conversion material that is present in the filler.Therefore, radiation is overflowed from filler with the wavelength identical with the wavelength of being launched this radiation by light-emitting diode, and need not be absorbed the main component of this radiation by the part of filler.At least a portion is preferably carried out wavelength Conversion by the luminescent conversion material by the radiation that another light-emitting diode sent.
In the particularly preferred form of implementation of light-emitting diode assembly, the carrying out of the electromagnetic radiation of launching by one of light-emitting diode the composition of wavelength Conversion be mixed into mixed light with the electromagnetic radiation of launching by this light-emitting diode at first.This mixed light particularly preferably is white light.
That is to say that one of light-emitting diode for example is suitable for launching the electromagnetic radiation in ultraviolet-blue spectral range.At this, by the maximum of the wavelength of light-emitting diode institute radiation emitted preferably between 420nm and 470nm.Therefore, the luminescent conversion material for example is suitable for, and a part of radiation is transformed into electromagnetic radiation in green-yellow spectrum scope.The maximum of the relative spectral of the radiation of being changed emission is preferably in the wave-length coverage between 530nm and 580nm.As mixed light, advantageously obtain white light.
In other form of implementation of light-emitting diode assembly, one of light-emitting diode is suitable for producing the electromagnetic radiation in redness, green or the yellow spectrum scope.
Preferably, one of light-emitting diode is suitable for launching the electromagnetic radiation in the red color spectrum range of maximum between 600nm and 750nm of wavelength of institute's radiation emitted.
At this, light-emitting diode assembly utilizes following thought in addition, promptly by power a certain composition of mixture of red coloured light on by the direction of the alternation of the radiation that light-emitting diode assembly sent for this light-emitting diode assembly.If by light-emitting diode assembly by partly converting blue light to sodium yellow radiation white light for example, then the white light that is produced by this way comprises very small red composition.But, can compensate the deficiency of red light by by on conducting direction, serving as but that the light-emitting diode power supply preset time of emission red light has at ground at interval and adds red light with predetermined current intensity.Select to launch the light-emitting diode of the light in the green spectral range for example if replace one of light-emitting diode of the light in the emission red color spectrum range, then the radiation of light-emitting diode assembly can mix the composition of determining of green light by this way.In a word, advantageously improve the color reproduction index of light-emitting diode assembly by this way.
In addition, proof particularly advantageously also in light-emitting diode assembly, these two each other the light-emitting diode that connects of inverse parallel prevent the protective device of the static discharge on the choked flow direction each other.Such ESD potential pulse can damage on function or even breaking-up optoelectronic component.If electric current is light-emitting diode assembly because this ESD potential pulse is only flowed through, then on conducting direction, derive this electric current by one of light-emitting diode.Therefore reduced to puncture the danger of other diode.
In other preferred form of implementation of light-emitting diode assembly, the series connection of another light-emitting diode is connected at least one in the light-emitting diode that inverse parallel each other connects at least.For example, possible is the light-emitting diode series connection of transmitting green light to be connected to the light-emitting diode of emission red light.So for example can with the light-emitting diode inverse parallel of emission blue light be connected to this two light-emitting diodes.At this, have the red light that improved and the white light of green light composition by alternately for example producing to light-emitting diode assembly power supply.
Just illustrated light-emitting diode assembly particularly preferably is used in the interior lighting of automobile or aircraft as lighting apparatus or is used in video camera and the camera.At this, prove that particularly advantageously radiation has the light-emitting diode assembly of the white light of the red light composition that has improved.Therefore, for example when being used for the interior lighting of automobile, can be read better by the illustrated guideboard that light-emitting diode assembly illuminated as lighting apparatus.Illuminate with the traditional light-emitting diode assembly that utilizes the red light composition do not improved and to compare, the people who utilizes this light-emitting diode assembly to illuminate also seems clearer.For example when this light-emitting diode assembly was used for video camera or camera, this also proved particularly advantageous.
In other form of implementation, at least one light-emitting diode has at least one light-emitting diode chip for backlight unit, wherein the major part of the electromagnetic radiation that is produced in light-emitting diode chip for backlight unit is overflowed on main radiation direction by radiation effusion face, and perhaps at least one light-emitting diode constitutes by such light-emitting diode chip for backlight unit.The particularly preferably unique radiation by light-emitting diode chip for backlight unit of electromagnetic radiation is selected face and is selected.
Light-emitting diode chip for backlight unit preferably comprises epitaxially grown layer and piles up.It for example is a sequence epitaxially grown layer that this layer piles up.This layer piles up and preferably includes at least one active area, and this active area is suitable for producing electromagnetic radiation.
For this reason, active area for example can have pn knot, double-heterostructure, single quantum or particularly preferably have multi-quantum pit structure (MQW).Title " quantum well structure " comprises arbitrary structures in the application's scope, wherein limited (" confinement ") charge carrier experiences the quantization of its energy state.Title " quantum well structure " does not especially comprise the explanation about the quantization dimension.Therefore, quantum well structure comprises the combination in any of quantum groove, quantum wire and quantum dot and these structures in addition.
Layer piles up and particularly preferably is a sequence epitaxially grown layer, and growth substrates is away from these layers after epitaxial growth finishes.Particularly preferably be carrier is coated on layer surface that deviates from initial growth substrates of piling up.The device of making under the situation of growth substrates away from epitaxially grown sequence of layer often also utilizes upperseat concept " thin layer device " to represent.
For example at " 30%external quantumefficiency from surface textured LEDs " (Appl.Phys.Lett. of people such as Schnitzer I., in October, 1993, Bd.63,2174-2176 page or leaf) in the basic principle of thin layer device has been described, the document is included into by returning to draw at this about the disclosure of the basic principle of thin layer device.
Thin-film light emitting diode chip is similar to the Lambert surface radiator well and therefore for example is suitable for particularly well being used in the searchlight.
Particularly advantageous is to compare with growth substrates and can freely select carrier relatively.Therefore, aspect some characteristic of the conducting power of device or stability, this carrier is suitable for better as operational growth substrates, and for manufacturing value is high, epitaxially grown sequence of layer, this growth substrates is subjected to strict restriction.Therefore, in order to obtain costly epitaxial loayer, the material of extension segregation for example must mate with the growth substrates grid.
Be to pile up the thermal coefficient of expansion that is complementary with layer with being applied to layer characteristic optimization of the carrier that piles up.For example, this carrier can comprise as the semi-conducting material of germanium, arsenic calcium, CaCl2, carborundum with as other material of sapphire, molybdenum or metal.
In addition, be good especially capacity of heat transmission the characteristic optimization of carrier, thus when producing electromagnetic radiation in active area formed heat at least in part can by carrier towards periphery environment send.
According to the preferred improvement project of light-emitting diode chip for backlight unit, arrange the reflector between piling up at coated carrier and layer.This reflector for example comprises Bragg mirror or metallic reflector.The metallic speculum that for example can comprise gold, calcification gold, silver, aluminium or platinum for example is the less directional dependency of reflectivity with respect to the feature of Bragg mirror.Utilize metallic speculum also can realize the reflectivity higher than the reflectivity of realizing with Bragg mirror.
These two light-emitting diodes particularly preferably have the light-emitting diode chip for backlight unit of at least one membrane structure.
According at least one form of implementation of light-emitting diode assembly, light-emitting diode assembly has fluorescence detector, and this fluorescence detector is suitable for detecting the pulse of electromagnetic radiation that is reflected by object.The reflection of the pulse of electromagnetic radiation that pulses of radiation are preferably launched by one of light-emitting diode.At this, this detector not only can be positioned within the shell of light-emitting diode assembly but also can be positioned at outside the shell of light-emitting diode assembly.This detector is preferably suitable for detecting the light of these two light-emitting diodes.
In addition, also be provided with analysis circuit in light-emitting diode assembly, this analysis circuit is suitable in the spacing of determining under the situation of applying detection device signal between object and the detector.Spacing between detector and the object can for example be calculated according to the following time by analysis circuit, and this time is to launch pulses of radiation and receive time between the pulse of being reflected by object.Also possible in addition is that by the comparison of initial pulse with the pulse of being reflected, this analysis circuit is determined the spacing apart from object.At this, apart from the spacing of object as determining by pulse shape relatively.Preferably, also can determine spacing by pulse amplitude relatively apart from object.
At least one form of implementation according to light-emitting diode assembly, possible in addition is, light-emitting diode assembly has two light-emitting diodes, and these light-emitting diodes can be launched the light of different wave length and the reflection of the pulses of radiation of these two light-emitting diodes is considered to be used for determining spacing.Possible by this way is the special spacing of accurately determining apart from object.Therefore for example possible is that the pulse of being reflected of these two light-emitting diodes is analyzed by different parsers.As determining apart from the spacing of the object of the pulse of reflecting light-emitting diode by difference running time.The reflection of the pulse of other light-emitting diode is considered for relatively coming to determine spacing by pulse amplitude or pulse shape.
In a word, light-emitting diode assembly is suitable for adopting at optical recording apparatus or the equipment that is used for distance measurement especially well.
In addition, according at least a in the above-mentioned form of implementation optical recording apparatus with light-emitting diode assembly is described.
In first form of implementation of optical recording apparatus, a kind of optical recording apparatus has been described, this optical recording apparatus has two light-emitting diodes, and these two light-emitting diodes connect on inverse parallel ground each other.That is to say,, then on the choked flow direction, connect another light-emitting diode connecting one of light-emitting diode on the conducting direction if in the circuit connection of light-emitting diode, apply common external voltage.
In addition, power supply is set, this power supply is suitable for being independently of each other these light-emitting diode power supplies on conducting direction.This power supply is suitable for for example alternately being these light-emitting diode power supplies on conducting direction., this power supply also can be suitable for being simultaneously these two light-emitting diode power supplies on conducting direction.In addition, this power supply for example is suitable for when continuous firing being the power supply of one of light-emitting diode on conducting direction, and predetermined instant on conducting direction be second light-emitting diode power supply preset time at interval.Also possible is that these two light-emitting diodes are continuous firing or pulsed operation alternately.
Therefore, a kind of optical recording apparatus has been described in a form of implementation, this optical recording apparatus has two light-emitting diode and the power supplys of the connection of inverse parallel ground each other, and it is these light-emitting diodes power supplies independently of each other on conducting direction that this power supply is suitable for.
Preferably, light-emitting diode is disposed in the common shell.The power supply of these light-emitting diodes for example can be disposed in outside this shell.This shell is preferably designed to be and can carries out mounted on surface.By this way, saving ground, position especially places for example at least one optical element after the light-emitting diode on main radiation direction of these light-emitting diodes.This optical element can be fixed on the part shell.This optical element can be refraction, diffraction, holographic optical system or also can be the optical system of reflection.In addition, this optical element can be optimized at a plurality of light-emitting diodes.That is to say, construct this optical element in this case like this, make this optical element at the elements act of all light-emitting diodes as optimum.For this reason, for example can construct light effusion face according to this optical element.
Preferably surround these light-emitting diodes at least in part by common filler.This filler is transparent for the electromagnetic radiation of being launched by these light-emitting diodes to small part preferably.This filler for example can constitute an optical element.The optical characteristics of this optical element is adjustable definitely by the interface of selective refraction rate and formation filler for example, makes the electromagnetic radiation that is produced by these light-emitting diodes leave filler by the interface that forms filler.Also possible is that independently optical element is applied at least a portion filler.
In other form of implementation of optical recording apparatus, these light-emitting diodes are suitable for launching the light of different wave length.For example, one of light-emitting diode can be suitable for producing the light in infrared or the red color spectrum range, and another light-emitting diode is suitable for producing the light in the blue spectral range.But also possible is the light in these two light-emitting diode emission same spectral range.At this, especially also possible is that these light-emitting diodes are launched the light of identical wavelength.
Preferably, differently determine the size of these light-emitting diodes, that is to say that these light-emitting diodes are distinguished in the characteristic parameter as its electric consumption power or its relative brightness.
This external this, optical recording apparatus utilizes following thought, promptly by two different light-emitting diodes are arranged in the common shell and the device of the light-emitting diode that can be particularly adopts in many-side can be integrated in the optical recording apparatus in the mode of special saving position.In addition, can spatially closely arrange these light-emitting diodes, so that these light-emitting diodes can utilize common optical element.
In other form of implementation of optical recording apparatus, the luminescent conversion material is set, this luminescent conversion material is suitable for wavelength Conversion is carried out in the electromagnetic radiation of being launched by at least one light-emitting diode at least in part.That is to say, on radiation direction, the luminescent conversion material is placed after at least one light-emitting diode that this luminescent conversion absorbed at least a portion is by the light-emitting diode chip for backlight unit institute's radiation emitted and the radiation of then launching another wavelength.This luminescent conversion material preferably emission wavelength greater than at first by the radiation of the wavelength of light-emitting diode institute radiation emitted.By with the carrying out of radiation the composition of wavelength Conversion obtain final radiation with mixing by the initial radiation of launching of light-emitting diode.
Also can carry out wavelength Conversion by the luminescent conversion material fully basically by the radiation that light-emitting diode is launched, for example so that convert invisible radiation to visible light.When application is comprised in the different luminescent substance of in the luminescent conversion material at least two kinds, can produce mixed light by this way by these two light-emitting diode institute radiation emitted.
In other form of implementation, the luminescent conversion material for example can be applied in the radiation coupling output face of at least one light-emitting diode by thin layer.But also possible is with thin layer the luminescent conversion material only to be coated on one of light-emitting diode.In addition, possible is, the luminescent conversion material is coated to respectively on these two light-emitting diodes, and this luminescent conversion material can comprise different luminescent substances.At this, these luminescent substances can be complementary by the respective electrical magnetic radiation that light-emitting diode produced.
Preferably, common filler also can comprise the luminescent conversion material.One of light-emitting diode particularly preferably is suitable for the electromagnetic radiation that emission wavelength can penetrate filler to a great extent unobstructedly.In this point, " unobstructed to a great extent " be meant, by being present in luminescent conversion material in the filler to not carried out wavelength Conversion by the electromagnetic radiation that this light-emitting diode sent or only carrying out wavelength Conversion indistinctively.Therefore, this radiation is overflowed from filler with the wavelength identical with the wavelength of being launched this radiation by light-emitting diode, and need not be absorbed the main component of this radiation by the part of filler.So, preferably wavelength Conversion is carried out in the electromagnetic radiation of other light-emitting diode at least in part.
According at least one form of implementation of optical recording apparatus, the carrying out of the electromagnetic radiation of launching by one of light-emitting diode the composition of wavelength Conversion be mixed into mixed light with the electromagnetic radiation of launching by this light-emitting diode at first.This mixed light particularly preferably is white light.
That is to say that one of light-emitting diode for example is suitable for launching the electromagnetic radiation in ultraviolet-blue spectral range.At this, by the maximum of the wavelength of light-emitting diode institute radiation emitted preferably between 420nm and 470nm.So the luminescent conversion material for example is suitable for, convert a part of radiation in green-yellow spectrum scope electromagnetic radiation.At this, the maximum of the relative spectral of institute's radiation emitted emission is preferably in the wave-length coverage between 530nm and 580nm.As mixed light, obtain white light.
Possible in addition is that these two light-emitting diodes can be launched the light in ultraviolet-blue spectral range.Therefore, the light of these two light-emitting diodes can be mixed into white light with the light of being launched by the luminescent conversion material.
Also possible in addition is, white light produces the white light of at least one light-emitting diode by at least one red light emitting diodes chip, at least one green LED chip and at least one blue led chips, and this light-emitting diode chip for backlight unit is comprised in the light-emitting diode.
In other form of implementation, one of light-emitting diode is suitable for producing the electromagnetic radiation in redness, green, blueness or the yellow spectrum scope.
In other form of implementation of optical recording apparatus, fluorescence detector is set.This fluorescence detector is suitable for, and detects the pulse of electromagnetic radiation by object reflected.This detector is the pulses of radiation by the pulse of being reflected of the pulses of radiation that one of light-emitting diode sent preferably suitable for detecting.For this reason, this detector can be aspect its sensitivity Wavelength matched with the electromagnetic radiation of launching by light-emitting diode, that is to say that detector preferably is sensitive especially in the wave-length coverage of the electromagnetic radiation of being launched by light-emitting diode.For this reason, one of light-emitting diode is preferably suitable for producing the pulses of radiation in the infrared range of spectrum.Detector preferably is sensitive especially in infrared range of spectrum.
Be provided with analysis circuit in addition, this analysis circuit is suitable in the spacing of determining under the situation of applying detection device signal between object and the detector.Spacing between detector and the object can for example be calculated according to the time of launching pulses of radiation and receive between the pulse of being reflected by object by this analysis circuit.Also possible in addition is, this analysis circuit relatively comes to determine spacing apart from object by initial pulse and the pulse of being reflected.At this, apart from the spacing of object as determining by pulse shape relatively.Preferably also possible is, determines spacing apart from object by pulse amplitude relatively.
Object of Que Dinging and the spacing between the detector can be used in the autofocus system of optical recording apparatus like this.
In other form of implementation of optical recording apparatus, at least one light-emitting diode is suitable for producing the flash of light that has until the lighting hours of 500ms (typically being 300ms)., lighting hours also can be littler and for example between 100ms and 200ms.Preferably, a device is set in optical recording apparatus, this device is suitable at least one light-emitting diode and powers this time interval.This device can be a pulse width modulation circuit.
These two light-emitting diodes particularly preferably are suitable for producing flash of light in illustrated mode.Then, this device can be used for this two light-emitting diodes, to produce pulse.At this, especially possible is, the light that will launch by at least one light-emitting diode and the carrying out of radiation the composition of wavelength Conversion be mixed into white light.Particularly preferably be, these two light-emitting diodes are suitable for producing white flash by this way.
In other form of implementation of optical recording apparatus, the illumination intensity of flash of light can be adjusted definitely, that is to say, the device that is used to carry out the pulsed power supply for example is suitable for making pulse duration and measured amount to be complementary.Therefore, this pulse duration is preferably determined by controlled quentity controlled variable.The value (for example surrounding environment brightness) that this controlled quentity controlled variable is preferably measured.The flash of light that for example produces less illumination intensity when therefore, ambient brightness is high around is just enough.Therefore the pulse length of flash of light for example can be lowered.But the pulse length of flash of light for example also can be complementary with the lighting hours of optical recording apparatus.
In other form of implementation of optical recording apparatus, at least one pulse width modulation circuit is set, this pulse width modulation circuit is suitable at least one light-emitting diode of pulsed drive.By pulse width modulation circuit for example possible be to adjust the luminous intensity of light-emitting diode in when operation.Compare with closing time, the turn-on time of light-emitting diode is short more, and then the light of light-emitting diode just seems bright more.For example possible by this way is that at least one light-emitting diode is as the light source works of tunable optical.
In other form of implementation of optical recording apparatus a device is set, this device is suitable for, and synchronously is at least one light-emitting diode power supply with the video recording sequence of being controlled by optical recording apparatus.This device for example can be a pulse width modulation circuit.This device is preferably not only controlled flash of light but also control the video recording sequence.Therefore, as throw light on each single image of videograph of the flash of light under by the optical recording apparatus recorded video sequence time, can utilizing.Because handle the slow of visual signals, this sequence seems to be illuminated continuously for the observer.But accurately the bright pulse of adjusting video recording has such advantage with respect to the continuous firing of light-emitting diode, promptly is energy-conservation especially.In addition, when the light-emitting diode pulsed operation, reduced because the heat that the work of light-emitting diode produces with respect to continuous firing.This has advantageously reduced light-emitting diode is fully cooled off necessary cost.
In all described so far forms of implementation, particularly advantageously be, these two each other the light-emitting diode that connects of inverse parallel prevent the protective device of the static discharge on the choked flow direction each other.Such ESD potential pulse is at function aspects infringement or even breaking-up optoelectronic component.If now electric current is owing to this ESD potential pulse light-emitting diode assembly of flowing through, then electric current is derived by one of light-emitting diode on conducting direction.Avoided puncturing the danger of other light-emitting diode thus.
In other form of implementation of optical recording apparatus, this optical recording apparatus is one of following equipment: camera cell phone, digital camera, video camera, camera.The power saving of light-emitting diode and the device of place-saving are particularly advantageous in these equipment.
In addition, a kind of method that is used at least one light-emitting diode of pulsed drive has been described, wherein synchronously has been the light-emitting diode power supply with the video recording sequence of controlling by optical recording apparatus.At this preferably, the power supply of light-emitting diode is controlled by the mechanism identical with the sequence of video recording.That is to say that optical recording apparatus had preferably not only been controlled the power supply of light-emitting diode but also controlled the sequence of video recording.At this, light-emitting diode both can be integrated in the shell of optical recording apparatus, can be used as the exterior lighting source again and was disposed in the outside.Particularly a plurality of light-emitting diodes can synchronously be powered by optical recording apparatus with video recording by this way.As mentioned above, the synchronous operation of light-emitting diode is particularly suitable for videograph.When adopting a plurality of light-emitting diode, so advantageously video sequence is illuminated from different directions.
Possible in addition is to be light-emitting diode inverse parallel ground connection another light-emitting diode as the esd protection device.But also possible is, for light-emitting diode for example is connected in parallel as the Zener diode or the resistance of esd protection device.
Followingly in more detail light-emitting diode assembly is set forth with reference to embodiment and affiliated accompanying drawing.
The exemplary equivalent circuit diagram of first embodiment that Fig. 1 shows at this illustrated light-emitting diode assembly.
The exemplary equivalent circuit diagram of second embodiment that Fig. 2 shows at this illustrated light-emitting diode assembly.
Fig. 3 shows the cross section that schematically shows at the embodiment of this illustrated light-emitting diode assembly.
Fig. 4 A exemplarily shows the current time figure of the embodiment of light-emitting diode assembly.
Fig. 4 B exemplarily shows the current time figure of the embodiment of light-emitting diode assembly.
Fig. 5 shows the cross section that schematically shows at the embodiment of this illustrated light-emitting diode assembly in the optical recording apparatus described herein.
In these embodiment and accompanying drawing, identical or act on identical part and dispose identical reference symbol respectively.The shown part and the size of part should not be regarded as equal proportion mutually.More precisely, show some details among the figure large in order to understand better.
The exemplary equivalent circuit diagram of first embodiment that Fig. 1 shows at this illustrated light-emitting diode assembly.Light-emitting diode assembly has first light-emitting diode 1 and second light-emitting diode 2, and these two light-emitting diodes connect on inverse parallel ground each other.First light-emitting diode 1 for example is suitable for producing and has wavelength X
1Light, and second light-emitting diode is suitable for producing and has wavelength X
2Light.The light-emitting diode of inverse parallel connection utilizes the electric current power supply of direction alternation by pulse width modulation circuit 8 each other.
At this, be I with intensity
1Electric current on conducting direction, give the first light-emitting diode 1 for example time interval t that powers
1, so that first light-emitting diode 1 is for time interval t
1Emission wavelength is λ
1Electromagnetic radiation.
Use electric current I
2On conducting direction, give second light-emitting diode, 2 power-on times t at interval
2, so that this second light-emitting diode 2 is for time interval t
2Emission wavelength is λ
2Electromagnetic radiation.
For this reason, Fig. 4 A shows the exemplary current time diagram of light-emitting diode assembly, wherein respectively for time interval t
1Flow through electric current I
1And for time interval t
2Flow through electric current I
2
By 1/ (t
1+ t
2) provided the frequency of pulse width modulation circuit.The frequency of pulse width modulation circuit is preferably more than and equals 100Hz.For human eye, these two wavelength X
1And λ
2Therefore can not discover discretely, to have wavelength be λ but these two wavelength are mixed into
1And λ
2The light of composition.Time interval t
1And t
2But in this not only equal in length but also can have different length.If t for example
1＞t
2, then the light by the radiation of light-emitting diode assembly institute has more wavelength X
1Composition.
In addition, also possible is, as Fig. 4 B is shown, for a certain Dead Time t
3There is not electric current (I just
3=0) light-emitting diode assembly of flowing through.Can adjust the radiant power of light-emitting diode assembly by this way.Wherein there is not the flow through time interval t of this device of electric current
3With respect to t
1And t
2Big more, then the light by this device institute radiation seems dark more.It is also important that at this this time interval is enough little, so that the observer does not realize the beating of light of institute's radiation.
Fig. 2 shows the equivalent circuit diagram of second embodiment of light-emitting diode assembly.At this, two light-emitting diode 2a are one another in series with 2b and are connected, and are connected to 1 inverse parallel of first light-emitting diode this series circuit.Correspondingly, these light-emitting diodes 2a and the 2b time interval t that on conducting direction, worked simultaneously
2, and be λ at this emission wavelength
2aAnd λ
2bElectromagnetic radiation.By this way, can mix other light component for the electromagnetic radiation of launching by these light-emitting diode assemblies.
Fig. 3 shows the cross section that schematically shows of the embodiment of light-emitting diode assembly.At this, first light-emitting diode 1 for example is a light-emitting diode chip for backlight unit, and this light-emitting diode chip for backlight unit is suitable for being transmitted in the electromagnetic radiation in the wave-length coverage between 420nm and the 470nm.Preferably, the maximum of institute's radiation emitted is 450nm.For example, light-emitting diode 1 can be single light-emitting diode chip for backlight unit.
First light-emitting diode 1 for example can I
1The electric current that equals 350mA moves on conducting direction.Preferably, first light-emitting diode 1 time interval t that on conducting direction, worked and equaled 50ms
1Light-emitting diode 1 is incorporated into the first pontes 3a and touches (Wirebondingkontakt) 4a by the toe-in splice grafting and contacts with the second coupling part 3b.Be connected to 2 inverse parallels of second light-emitting diode second coupling part 3b, this second light-emitting diode 2 for example is incorporated on the second coupling part 3b and touches 4b by the toe-in splice grafting and contacts with the first pontes 3a.For example, second light-emitting diode 2 can be single light-emitting diode chip for backlight unit.
Second light-emitting diode 2 for example is suitable for launching the electromagnetic radiation in the red color spectrum range.By the maximum of 2 radiation emitted of second light-emitting diode preferably between 600nm and 750nm.Particularly preferably, utilize current strength I
2Electric current between 1mA and 30mA is second light-emitting diode 2 at the conducting direction time interval t that powered
2This time interval is preferably about 50ms at this.These two light-emitting diodes 1 and 2 are disposed in the groove of matrix 5 and by common filler 6 and surround.
Preferably, this filler 6 comprises epoxy resin-casting resin or silicones, and this epoxy resin-casting resin or silicones are for being transparent by light-emitting diode 1 and 2 electromagnetic radiation of being launched.In addition, filler 6 preferably comprises luminescent conversion material 7, and this luminescent conversion material 7 is suitable for converting the blue light that a part is launched by light-emitting diode 1 in the yellow spectrum scope light.At this, this sodium yellow is preferably located in the spectral region between 530nm and the 580nm.Particularly preferably, the maximum of yellow light wavelength is about 565nm.
The sodium yellow of the blue light of light-emitting diode 1 and luminescent conversion material is mixed into white light.The chromaticity coordinates of white light (Farbkoordinate) at this for example by 0.32 the C of equaling according to CIE 1931
xWith the C that equals 0.31
yProvide.Colour temperature is preferably at about 6500K.
Therefore, light-emitting diode assembly is at time interval t
1Emission white light and at time interval t
2The emission red light.At this, can pass through on the one hand with respect to t
1Time expand, is t at interval
2Perhaps use it to the current strength I of driven for emitting lights diode 2 on the other hand by raising
2Improve the composition of red light.Also possible is that being connected in series according to Fig. 2, other launches the light-emitting diode 2b of red light.The red light of second light-emitting diode 2 preferably penetrates filler, and need not carry out wavelength Conversion by the luminescent conversion material.
The light-emitting diode 1,2 of inverse parallel connection advantageously is the mutual esd protection device on the choked flow direction each other each other.For example, light-emitting diode assembly all is ESD safe according to JESD22-A114-B until 2kV by this way.
Fig. 5 shows the cross section that schematically shows of the embodiment of the light-emitting diode assembly 11 in the optical recording apparatus 10.
First light-emitting diode 1 for example is suitable for launching the electromagnetic radiation in ultraviolet-blue spectral range.First light-emitting diode 1 for example is suitable for launching the electromagnetic radiation between 420nm and the 470nm.Preferably, the maximum of institute's radiation emitted is 450nm.First light-emitting diode 1 for example is suitable for utilizing the constant current of about 350mA to be powered on conducting direction.Second light-emitting diode 2 can be identical with first light-emitting diode, 1 structure.But also possible is for example to determine the size of second light-emitting diode 2 than first light-emitting diode 1 littlelyr.Second light-emitting diode 2 for example can utilize 1 and 50mA between electric current on conducting direction, move.
According to the function of light-emitting diode 2, wherein light-emitting diode 2 wave-length coverage that is suitable for launching electromagnetic radiation can be mated.Therefore, light-emitting diode 2 for example can be suitable for launching the electromagnetic radiation in redness or the infrared range of spectrum.
Two light-emitting diodes 1,2 preferably are disposed in the common shell.For this reason, two light-emitting diodes 1,2 for example are disposed in the groove of matrix 5 and by common filler 6 and surround.Preferably, filler 6 comprises epoxy resin-casting resin or silicones, and this epoxy resin-casting resin or silicones are for being transparent by light-emitting diode 1,2 electromagnetic radiation of being launched.In addition, filler 6 preferably comprises luminescent conversion material 7, and this luminescent conversion material 7 is suitable for converting the blue light that a part is for example launched by light-emitting diode 1 in the yellow spectrum scope light.
Sodium yellow is at this preferably in the spectral region between 530nm and 580nm.Particularly preferably, the maximum of yellow light wavelength is about 565nm.The sodium yellow of the blue light of light-emitting diode 1 and luminescent conversion material 7 is mixed into white light.
Light-emitting diode 1,2 for example can by coupling part 3a, 3b from the outside of shell be can contact and by toe-in close 4a, 4b within shell each other inverse parallel ground connect.For example, light-emitting diode 1,2 is respectively single light-emitting diode chip for backlight unit.In addition, possible is that a plurality of light-emitting diode chip for backlight unit 1 (for example four or five light-emitting diode chip for backlight unit) are disposed in the common shell.Then, be connected to light-emitting diode 2 inverse parallels light-emitting diode chip for backlight unit 1.Light-emitting diode chip for backlight unit 1 for example can be disposed on the ceramic monolith.Light-emitting diode chip for backlight unit 1 for example can be the light-emitting diode chip for backlight unit of the light-emitting diode chip for backlight unit of two transmitting green light, an emission blue light and the light-emitting diode chip for backlight unit of an emission red light.Therefore when co-operation, these light-emitting diode chip for backlight unit 1 are suitable for producing white light.
In the embodiment of optical recording apparatus, for example light-emitting diode 2 can be used as pre-flash, so that the red-eye effect when reducing to take a picture.So second light-emitting diode 2 is preferably suitable for the light in the emission blue spectral range, so that the electromagnetic radiation of being launched is mixed into white light with the radiation of being sent by luminescent conversion material 7.
Possible in addition is the light in second light-emitting diode, the 2 emission red color spectrum range.Second light-emitting diode 2 then can be used as the pre-flash of special protection eyes (augenschonend).
In other embodiments, pulse width modulation circuit 8 is set additionally, for example can on conducting direction, drives second light-emitting diode 2 by this pulse width modulation circuit 8.Possible in addition by this way is, on the meaning of the flashlight of tunable optical with the light source of second light-emitting diode 2 as tunable optical.Second light-emitting diode 2 this particularly preferably utilize 25 and 35mA between electric current drive.
In other embodiments, possible is, second light-emitting diode 2 is not only as pre-flash but also as the flashlight of tunable optical.
With light-emitting diode 1,2 save ground, positions be arranged in the optical recording apparatus and second light-emitting diode 2 that economizes on electricity in this particularly advantageously can be used in compact devices as mobile phone or digital camera.
In other embodiment of optical recording apparatus, a device is set, utilize this device possible be that first light-emitting diode 1 moves as very brief flash of light.This device for example can be a pulse width modulation circuit 8.Lighting hours is preferably mated with surrounding environment brightness at this.To this, for example possible is, determined surrounding environment brightness and lighting hours and determined value are complementary before triggering very brief flash of light by fluorescence detector 13.This fluorescence detector 13 for example can be photodiode or phototransistor.
In another embodiment of optical recording apparatus, second light-emitting diode 2 for example is suitable for launching the light in the infrared range of spectrum.In addition, this optical recording apparatus also has detector 13, this detector 13 be suitable for detecting second light-emitting diode 2 by the light that object reflected that for example will take a picture.By as in the summary of the invention of specification part illustrated analysis circuit 14, so can determine spacing between object and the detector 13 and the spacing between therefore definite object and the recording equipment.The pitch information of Huo Deing for example can be used like this, so that so adjust optical system, consequently can absorb the distinct image of object.
In other embodiment of optical recording apparatus, the electromagnetic radiation that at least one light-emitting diode 1,2 is suitable for producing in the infrared range of spectrum.Then, the light of this light-emitting diode for example can be used as flash of light or continues illumination and be used to the night vision pattern of optical recording apparatus.That is to say that optical recording apparatus is suitable for receiving the electromagnetic radiation of being reflected of the light-emitting diode in the infrared frequency scope in this case and converts this electromagnetic radiation in the visible frequency range light.
In other embodiment of optical recording apparatus, light-emitting diode 1,2 is the mutual esd protection device on the choked flow direction.Preferably, the device of light-emitting diode all is ESD safe according to JESD 22-A114-B until 2kV.
Present patent application requires the priority of German patent application 102004031689.9-34 and 102004042185.4-52, and the disclosure of these German patent applications is included into by returning to draw at this.
The present invention is not subjected to the restriction with reference to the explanation of embodiment.More precisely, the present invention includes any new feature and the combination in any of these features, this particularly comprises the combination in any of the feature in the claim, even these features or these combinations itself are not illustrated in claim or embodiment clearly.
Claims (26)
1. light-emitting diode assembly, it has:
Two light-emitting diodes (1,2), wherein the positive electrode of first light-emitting diode (1) is electrically connected to the negative electrode of second light-emitting diode (2), and wherein the negative electrode of first light-emitting diode (1) is electrically connected to the positive electrode of second light-emitting diode (2), and
It is described light-emitting diode power supply that electric supply installation (8), described electric supply installation (8) are suitable for utilizing the electric current of direction alternation, wherein,
Described light-emitting diode (1,2) is being distinguished mutually aspect the electric consumption power and is being constituted mutual electrostatic discharge (ESD) protection.
2. light-emitting diode assembly according to claim 1, wherein, described electric supply installation (8) but but be suitable for utilizing the electric current of predetermined direction and intensity be described light-emitting diode power supply preset time at interval.
3. according to claim 1 or 2 described light-emitting diode assemblies, wherein, described electric supply installation (8) is a pulse width modulation circuit.
4. light-emitting diode assembly according to claim 1, wherein, described two light-emitting diodes (1,2) are disposed in the common shell (5).
5. light-emitting diode assembly according to claim 1, wherein, described light-emitting diode (1,2) is suitable for launching the light of different wave length.
6. light-emitting diode assembly according to claim 1 wherein, is provided with luminescent conversion material (7), and described luminescent conversion material (7) is suitable for wavelength Conversion is carried out in the electromagnetic radiation of being launched by one of described light-emitting diode (1,2) at least in part.
7. light-emitting diode assembly according to claim 1, wherein, described light-emitting diode (1,2) is surrounded by filler (6).
8. light-emitting diode assembly according to claim 7, wherein, one of described light-emitting diode (2) is suitable for the electromagnetic radiation that emission wavelength penetrates described filler (6) to a great extent unobstructedly.
9. light-emitting diode assembly according to claim 6, wherein, the composition that has carried out wavelength Conversion in the electromagnetic radiation of the electromagnetic radiation of described light-emitting diode (1) and described light-emitting diode (1) is mixed into white light.
10. light-emitting diode assembly according to claim 9, wherein, one of described light-emitting diode (1) is suitable for, emission wavelength at 420nm to the electromagnetic radiation between the 470nm, and wherein, described luminescent conversion material (7) be suitable for a part with described radiation convert to wavelength at 530nm to the electromagnetic radiation between the 580nm.
11. light-emitting diode assembly according to claim 1, wherein, one of described light-emitting diode (2) is suitable for launching the electromagnetic radiation in one of following spectral region: red, green, yellow.
12. light-emitting diode assembly according to claim 11, wherein, one of described light-emitting diode (2) is suitable for emission wavelength in the electromagnetic radiation of 600nm in the red color spectrum range between the 750nm.
13. light-emitting diode assembly according to claim 1, wherein, at least one other light-emitting diode (2b) is connected in series at least one light-emitting diode (2a).
14. light-emitting diode assembly according to claim 1, it is set in one of following equipment as lighting apparatus: the interior lighting of automobile, video camera, camera.
15. light-emitting diode assembly according to claim 1, it has:
-fluorescence detector (13), described fluorescence detector (13) are suitable for detecting the electromagnetic radiation of one of described light-emitting diode (1,2) of being reflected by object, and
-analysis circuit (14), described analysis circuit (14) are suitable in the spacing of determining under the situation of applying detection device signal between object and the detector.
16. light-emitting diode assembly according to claim 1, wherein, described two light-emitting diodes (1,2) surround by common filler (6), described filler (6) comprises luminescent conversion material (7), wherein, under the situation that need not to be converted, penetrate described filler (6), and carry out wavelength Conversion by described luminescent conversion material (7) at least in part by another light-emitting diode (1) institute radiation emitted by one of described light-emitting diode (2) institute radiation emitted.
17. light-emitting diode assembly according to claim 1 wherein, is provided for producing the electro-static discharge protection diodes of light.
18. light-emitting diode assembly according to claim 1, wherein, at least one described light-emitting diode (1,2) has the light-emitting diode chip for backlight unit of membrane structure.
19. an optical recording apparatus, it has according to the described light-emitting diode assembly of one of aforesaid right requirement (11).
20. optical recording apparatus according to claim 19, wherein, fluorescence detector (13) is set, described fluorescence detector (13) is suitable for detecting the light-emitting diode (1 that is reflected by object, 2) one of electromagnetic radiation, and analysis circuit (14) is set, and described analysis circuit (14) is suitable in the spacing of determining under the situation of applying detection device signal between object and the detector (13).
21. optical recording apparatus according to claim 20, wherein, at least one described light-emitting diode (1,2) is suitable for producing the flash of light that has until the lighting hours of 500ms.
22. optical recording apparatus according to claim 21 wherein, can be adjusted the illumination intensity of described flash of light definitely.
23. optical recording apparatus according to claim 20, wherein, at least one described light-emitting diode (1,2) is suitable for when continuous service luminous.
24. optical recording apparatus according to claim 20 wherein, is provided with electric supply installation, described electric supply installation is suitable for synchronously being at least one described light-emitting diode (1,2) power supply with the video recording sequence of controlling by described optical recording apparatus.
25. optical recording apparatus according to claim 20 wherein, relates to one of following equipment: camera cell phone, digital camera, video camera.
26. a method that is used at least one light-emitting diode of pulsed drive wherein, and synchronously is described light-emitting diode power supply by the video recording sequence of controlling according to claim 19 or 20 described optical recording apparatus.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102004031689A DE102004031689A1 (en) | 2004-06-30 | 2004-06-30 | Light-emitting diode device, has e.g. pulse-width modulator for supplying current to two antiparallel-connected LEDs |
| DE102004031689.9 | 2004-06-30 | ||
| DE102004042185.4 | 2004-08-31 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1981378A CN1981378A (en) | 2007-06-13 |
| CN100517707C true CN100517707C (en) | 2009-07-22 |
Family
ID=35668235
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005800222260A Expired - Fee Related CN100517707C (en) | 2004-06-30 | 2005-06-13 | Light-emitting diode arrangement, optical recording device and method for the pulsed operation of at least one light-emitting diode |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN100517707C (en) |
| DE (1) | DE102004031689A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102013110483A1 (en) * | 2013-09-23 | 2015-03-26 | Osram Oled Gmbh | Optoelectronic component device and method for operating an optoelectronic component |
| CN111123620A (en) * | 2014-06-17 | 2020-05-08 | 亮锐控股有限公司 | Flash module comprising an array of reflector cups of phosphor converted LEDs |
| DE102015115358A1 (en) * | 2015-09-11 | 2017-03-16 | Hella Kgaa Hueck & Co. | Lighting device for vehicles |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04365382A (en) * | 1991-06-13 | 1992-12-17 | Toshiba Corp | Semiconductor light-emitting device and its driving method |
| DE19638667C2 (en) * | 1996-09-20 | 2001-05-17 | Osram Opto Semiconductors Gmbh | Mixed-color light-emitting semiconductor component with luminescence conversion element |
| US6185240B1 (en) * | 1998-01-30 | 2001-02-06 | Motorola, Inc. | Semiconductor laser having electro-static discharge protection |
| US6285140B1 (en) * | 1999-04-21 | 2001-09-04 | Pharos Innovations Inc. | Variable-effect lighting system |
| JP4288553B2 (en) * | 2000-07-25 | 2009-07-01 | 富士フイルム株式会社 | Camera strobe device |
| US6359392B1 (en) * | 2001-01-04 | 2002-03-19 | Motorola, Inc. | High efficiency LED driver |
| US6547249B2 (en) * | 2001-03-29 | 2003-04-15 | Lumileds Lighting U.S., Llc | Monolithic series/parallel led arrays formed on highly resistive substrates |
| US7009199B2 (en) * | 2002-10-22 | 2006-03-07 | Cree, Inc. | Electronic devices having a header and antiparallel connected light emitting diodes for producing light from AC current |
-
2004
- 2004-06-30 DE DE102004031689A patent/DE102004031689A1/en not_active Withdrawn
-
2005
- 2005-06-13 CN CNB2005800222260A patent/CN100517707C/en not_active Expired - Fee Related
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| DE102004031689A1 (en) | 2006-02-16 |
| CN1981378A (en) | 2007-06-13 |
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