CN103378078A - Lighting device and method for generating white light - Google Patents
Lighting device and method for generating white light Download PDFInfo
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- CN103378078A CN103378078A CN2012101122914A CN201210112291A CN103378078A CN 103378078 A CN103378078 A CN 103378078A CN 2012101122914 A CN2012101122914 A CN 2012101122914A CN 201210112291 A CN201210112291 A CN 201210112291A CN 103378078 A CN103378078 A CN 103378078A
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Abstract
The invention discloses a lighting device and a method for generating a white light. The lighting device includes a first light emitting element, a second light emitting element, and a third light emitting element. Light emitted by the third light emitting element is selectively mixed with the light emitted by the first light emitting element and the second light emitting element, to form white light with chroma coordinate points locating approximately on a blackbody curve, and the color of the light emitted by the third light emitting element is determined by a linear relation of light wavelengths of the light emitted by the first light emitting element and the second light emitting element and corresponding coordinate points of the white light color temperature. With the lighting device and the method for generating the white light, distinct color difference of the white light is avoided.
Description
Technical field
The present invention relates to a kind of lighting device, and be particularly related to a kind of lighting device with variable color-temperature.
Background technology
Along with the progress of science and technology, the user increases day by day for the demand of illumination, to the also gradually raising of requirement of quality of lighting.In recent years, light-emitting diode (LED) replaces traditional light source gradually, mainly be because the advantage such as light-emitting diode and conventional light source in comparison, have that luminous efficiency is good, the life-span is long, reliability is high and volume is little, so the scope of its application is very extensive.
With the lighting device of present generation white light, it can carry out mixed light by the element that produces cold white light and the element that produces warm white, so that lighting device can send according to different settings corresponding white light.
Yet, in the above-mentioned practice, by the white light that mixed light forms, its chromaticity coordinates point in XYZ chromaticity diagram can't fall within blackbody curve (Black Body Locus usually definitely, BBL) on, so that have the situation of obvious deviation to occur according to the color of white light that the above-mentioned practice forms.
Secondly, when lighting device sends corresponding white light according to different settings, light-emitting component wherein must controlledly be made as complete dark or entirely bright, and therefore the operation of above-mentioned mixed light can't more flexiblely be carried out, and also may be more inhomogeneous by the white light color of mixed light formation.
Moreover, for the element that will produce cold white light and the element that produces warm white are positioned in the same light fixture, in order to carry out the operation of mixed light, therefore the above-mentioned practice must dispose the LED of quite a lot of quantity in same light fixture, cause cost of manufacture to increase, and then cause the expensive of lighting device itself, and What is more, and the size of lighting device itself also can't be dwindled effectively.
Summary of the invention
The object of the present invention is to provide a kind of lighting device and produce the method for white light, using the color that prevents white light has the situation of obvious deviation to occur, and solve the operation of mixed light can't flexible problem of carrying out, also avoid cost of manufacture to increase.
One execution mode of content of the present invention is about a kind of lighting device, and it comprises the first light-emitting component, the second light-emitting component and the 3rd light-emitting component.The first light-emitting component is in order to send the light with first wavelength, and the first wavelength is less than about 480 nanometers.The second light-emitting component is in order to send the light with second wave length, and second wave length is greater than about 570 nanometers.The 3rd light-emitting component is in order to sending the light with three-wavelength, and mixes with the light with first wavelength and light selecting performance ground with second wave length, roughly is positioned at white light on the blackbody curve to be formed on chromaticity coordinates point in the XYZ chromaticity diagram.Wherein, the color that has the light of three-wavelength is determined by linear relationship and the light with second wave length and the linear relationship with white light respective seat punctuate in XYZ chromaticity diagram of the second colour temperature of the light with first wavelength with the white light respective seat punctuate in XYZ chromaticity diagram with first colour temperature.
Another execution mode of content of the present invention is about a kind of lighting device, and it comprises the first light-emitting component, the second light-emitting component and the 3rd light-emitting component.The first light-emitting component is in order to send the light with first wavelength, and the first wavelength is between about 440 nanometers and about 460 nanometers.The second light-emitting component is in order to send the light with second wave length, and second wave length is between about 580 nanometers and about 630 nanometers.The 3rd light-emitting component is in order to send the light with three-wavelength, be formed on chromaticity coordinates point in the XYZ chromaticity diagram to mix with the light with first wavelength and roughly be positioned at the white light that reference color temperature on the blackbody curve has high color temperature, or mix and form chromaticity coordinates point with the light with second wave length and roughly be positioned at the white light that reference color temperature has lowest color temperature on the blackbody curve.
Another execution mode of content of the present invention is the method that produces white light about a kind of, and it is included in the XYZ chromaticity diagram according to having the light of the first wavelength and roughly being positioned at the coordinate points that reference color temperature on the blackbody curve has the white light of high color temperature and matches the first line stretcher; In XYZ chromaticity diagram, match the second line stretcher according to having the light of second wave length and roughly being positioned at the coordinate points that reference color temperature on the blackbody curve has the white light of lowest color temperature; And provide the light with three-wavelength according to matching result, form white light for mixing with the light selecting performance ground with second wave length with the light with first wavelength, the coordinate points of light in this XYZ chromaticity diagram that wherein has three-wavelength roughly is positioned at the first line stretcher and the second line stretcher intersection.
Beneficial effect of the present invention is, according to technology contents of the present invention, the method of application of aforementioned lighting device and generation white light, not only can be by changing three luminous intensity ratios that light-emitting component is corresponding, effectively allow the white light that forms fall within definitely on the blackbody curve, avoid the color of the white light that forms to have the situation of obvious deviation to occur, and the operation of mixed light can more flexiblely be carried out, the white light color that mixed light is formed is relatively even, also can reduce the quantity of required light-emitting component, the size of lighting device itself is reduced, reduce simultaneously cost of manufacture, reduce the price of lighting device itself.
Content of the present invention aims to provide the simplification summary of this disclosure, so that the reader possesses basic understanding to this disclosure.This summary of the invention is not the complete overview of this disclosure, and its purpose is not at the key/critical element of pointing out the embodiment of the invention or defines scope of the present invention.
Description of drawings
Fig. 1 is for illustrating a kind of schematic diagram of lighting device according to the embodiment of the invention.
Fig. 2 reaches the wherein situation of chromaticity coordinates point coupling for illustrate a kind of XYZ chromaticity diagram according to the embodiment of the invention.
Fig. 3 is for illustrating the schematic diagram of a kind of wavelength and relative intensity thereof according to the embodiment of the invention.
Fig. 4 is for illustrating a kind of schematic diagram of lighting device according to another embodiment of the present invention.
Fig. 5 A to Fig. 5 F is the variation schematic diagram of white light colour temperature under the different situation of the luminous strength ratio that illustrates light-emitting component according to the embodiment of the invention.
Fig. 6 is for to illustrate a kind of flow chart that produces the method for white light according to the embodiment of the invention.
Wherein, description of reference numerals is as follows:
100,400: lighting device
110,410: the first light-emitting components
120,420: the second light-emitting components
130,430: the three light-emitting components
140,440: carrier
200: blackbody curve
450: control element
S602, S604, S606: step
Embodiment
Hereinafter cooperate accompanying drawing to elaborate for embodiment, but the embodiment that provides limits the scope that the present invention is contained, and the description of structure running is non-in order to limit the order of its execution, any structure that is reconfigured by element, produce and have the device that is equal to effect, be all the scope that the present invention is contained.In addition, accompanying drawing is not mapped according to life size only for the purpose of description.
About " pact " used herein, " approximately " generally be often referred to " roughly " error of numerical value or scope in 20 percent, be preferably in ten Percent, more preferably then be in 5 percent.Wen Zhongruo is without offering some clarification on, and its mentioned numerical value is all regarded as approximation, namely such as " pact ", " approximately " or " roughly " represented error or scope.
In addition, about " coupling " used herein or " connection ", all can refer to two or a plurality of element mutually directly make entity or electrical contact, or mutually indirectly put into effect body or electrical contact, and " coupling " also can refer to two or a plurality of element mutual operation or action.
Fig. 1 is for illustrating a kind of schematic diagram of lighting device according to the embodiment of the invention.Lighting device 100 comprises the first light-emitting component 110, the second light-emitting component 120, the 3rd light-emitting component 130 and carrier 140, wherein carrier 140 carries the first light-emitting component 110, the second light-emitting component 120 and the 3rd light-emitting components 130, and the light that the first light-emitting component 110, the second light-emitting component 120 and the 3rd light-emitting component 130 send separately forms white light after mixing.Should be noted that structure shown in Figure 1 only for convenience of description and summary signal is not to limit the present invention.
The first light-emitting component 110 is in order to send the light with first wavelength, and wherein the first wavelength is less than about 480 nanometers (nm).The second light-emitting component 120 is in order to send the light with second wave length, and wherein second wave length is greater than about 570 nanometers (nm).The 3rd light-emitting component 130 is in order to send the light with three-wavelength, and mix with the light with first wavelength and the light selecting performance ground with second wave length, roughly be positioned at white light on the blackbody curve (Black Body Locus, BBL) to be formed on chromaticity coordinates point in the XYZ chromaticity diagram (as: CIE 1931 chromatic diagrams).Above-mentioned color with light of three-wavelength, mainly be by the light with first wavelength with have a linear relationship of white light respective seat punctuate in XYZ chromaticity diagram of the first colour temperature, and have the light of second wave length and have the linear relationship of white light respective seat punctuate in XYZ chromaticity diagram of the second colour temperature, both determine for this.
On address following alleged chromaticity coordinates point and roughly be positioned at white light on the blackbody curve, the corresponding chromaticity coordinates point that mainly refers to white light is positioned on the blackbody curve really, perhaps on its chromaticity coordinates point and the blackbody curve deviation of each coordinate points in the error range ten Percent, or more preferably in 5 percent.
In one embodiment; the first light-emitting component 110 and the second light-emitting component 120 can be realized by luminescent grain, light-emitting diode (LED) chip or other light-emitting component (or light emitting source), and the 3rd light-emitting component 130 then can be realized by the pattern that fluorescent material covers luminescent grain or led chip.
Should be noted it is with which kind of form to produce that the light that above-mentioned light-emitting component sends is not limited to; In other words, above-mentioned light-emitting component can be simple luminous element or the luminous element of collocation fluorescent material, any those skilled in the art, without departing from the spirit and scope of the present invention, when designing different light emitting sources or collocation fluorescent material, realize that above-mentioned light-emitting component and luminous rear mixing thereof produce the effect of white light.
Followingly will illustrate that above-mentioned linear relationship by respective seat punctuate in the XYZ chromaticity diagram decides the mode of the light color with three-wavelength with embodiment.Fig. 2 reaches the wherein situation of chromaticity coordinates point coupling for illustrate a kind of XYZ chromaticity diagram according to the embodiment of the invention.See figures.1.and.2 simultaneously, light (such as blue light) with first wavelength is positioned at coordinate points B in chromatic diagram, light (such as ruddiness) with second wave length is positioned at coordinate points R in chromatic diagram, the white light that has the white light of the first colour temperature and have the second colour temperature lays respectively at coordinate points W1, W2 in chromatic diagram, and coordinate points W1, W2 roughly are positioned on the blackbody curve 200.Secondly, coordinate points B and coordinate points W1 form the first line stretcher L1 through coupling, coordinate points R and coordinate points W2 form the second line stretcher L2 through coupling, and the light specific fluorescent of blue light wavelength (as comprise) with three-wavelength then roughly is positioned at the intersection (being coordinate points P) of the first line stretcher L1 and the second line stretcher L2 in chromatic diagram.Therefore, the 3rd light-emitting component 130 light (being positioned at coordinate points P) with three-wavelength that sends just can send light (being positioned at coordinate points B) and the second light-emitting component 120 light (being positioned at coordinate points R) with second wave length that sends with first wavelength with the first light-emitting component 110 and optionally mix the white light that forms on the blackbody curve 200.Thus, just can effectively allow the white light that forms fall within definitely on the blackbody curve 200, avoid the color of the white light that forms to have the situation of obvious deviation to occur, and the operation of mixed light can more flexiblely carry out, the white light color that mixed light is formed is relatively even.
In one embodiment, light (being positioned at coordinate points P) with three-wavelength can mix with the light with first wavelength (being positioned at coordinate points B) and form the white light (being positioned at coordinate points W1) with first colour temperature, and the light (being positioned at coordinate points P) with three-wavelength can mix with the light with second wave length (being positioned at coordinate points R) and form the white light (being positioned at coordinate points W2) with second colour temperature.
In addition, above-mentioned light (being arranged in coordinate points P) with three-wavelength is not positioned on the blackbody curve 200 in the coordinate points of XYZ chromaticity diagram.Thus, just can by adjusting and mixing light with first wavelength, have the light of second wave length and have the light of three-wavelength, form the white light that roughly is positioned in the chromatic diagram on the blackbody curve.
In another embodiment, white light (being positioned at coordinate points W1) with first colour temperature can be the cold white light that a colour temperature scope has high color temperature (such as 5000K), and the white light (being positioned at coordinate points W2) with second colour temperature can be the warm white that reference color temperature has lowest color temperature (such as 2700K).In addition, light (being positioned at coordinate points P) with three-wavelength can be with the light with first wavelength or blue light and is formed the cold white light with high color temperature, and the light (being positioned at coordinate points P) with three-wavelength can mix with the light with second wave length or ruddiness and form the warm white with lowest color temperature.
Fig. 3 is for illustrating the schematic diagram of a kind of wavelength and relative intensity thereof according to the embodiment of the invention.As shown in figures 1 and 3, the light that the first light-emitting component 110 sends can be the light that falls within blue wave band, and its first wavelength can be less than about 480 nanometers, and in preferably can the wavelength band between between about 440 nanometers and about 460 nanometers; The light that the second light-emitting component 120 sends can be the light that falls within red spectral band, and its second wave length can be greater than about 570 nanometers, and in preferably can the wavelength band between between about 580 nanometers and about 630 nanometers; The light that the 3rd light-emitting component 130 sends then can comprise light with first wavelength and between the light of about 480 nanometers to about 570 nano waveband scopes.
On the other hand, when the first wavelength of selecting and second wave length change, the light with first wavelength also can change with the respective seat punctuate with light of second wave length, changes so that have the respective seat punctuate of the light of three-wavelength.In one embodiment, when the first wavelength between about 440 nanometers and about 460 nanometers, and second wave length is between about 580 nanometers and about 630 nanometers the time, respective seat punctuate (X with light of three-wavelength, Y) X value can be between about 0.336 and about 0.421, and Y value can be between about 0.3915 and about 0.4911.
In another embodiment, the first wavelength can be between about 440 nanometers and about 460 nanometers, second wave length can be between about 580 nanometers and about 630 nanometers, and the respective seat punctuate with light of three-wavelength can be positioned at First punctuate (0.3360,0.4004), the second coordinate points (0.3790,0.4911), in the 3rd coordinate points (0.3770,0.3915) and the formed regional extent of all the people present's punctuate (0.4210,0.4653).
Fig. 4 is for illustrating a kind of schematic diagram of lighting device according to another embodiment of the present invention.Lighting device 400 comprises the first light-emitting component 410, the second light-emitting component 420, the 3rd light-emitting component 430, carrier 440 and control element 450, wherein carrier 440 carries the first light-emitting component 410, the second light-emitting component 420 and the 3rd light-emitting components 430, the first light-emitting component 410, the second light-emitting component 420 send corresponding light according to above-mentioned Fig. 1 to execution mode shown in Figure 3, the required white light of formation after mixing with the 3rd light-emitting component 430.Control element 450 is electrically connected the first light-emitting component 410, the second light-emitting component 420 and the 3rd light-emitting component 430, in order to control the first light-emitting component 410, the second light-emitting component 420 and the 3rd light-emitting component 430, to change the luminous intensity of the first light-emitting component 410, the second light-emitting component 420 and the 3rd light-emitting component 430, so that the light that it sends can form the white light that roughly is positioned on the blackbody curve after mixing.Should be noted that equally structure shown in Figure 4 only for convenience of description and summary signal is not to limit the present invention.
On the implementation, control element 450 can be the control circuit of three-phase output, in order to controlling respectively each light-emitting component, and also can single control circuit on kenel, control chip or other feasible Drive and Control Circuit realize, it is not limited at this.
In one embodiment, under the situation of control element 450 each light-emitting component of control, the luminous intensity ratio of the first light-emitting component 410 relative the 3rd light-emitting components 430 can be between 0 and about 0.8, and the luminous intensity ratio of the second light-emitting component 420 relative the 3rd light-emitting components 430 can be between 0 and about 0.8, by this so that the light that the first light-emitting component 410, the second light-emitting component 420 and the 3rd light-emitting component 430 send can form the white light that roughly is positioned on the blackbody curve after suitably mixing.
On the other hand, above-mentioned control element 450 also can further be controlled luminous intensity ratio corresponding between the first light-emitting component 410, the second light-emitting component 420 and the 3rd light-emitting component 430 threes, use the corresponding coordinate position of white light on blackbody curve that change to form, to adjust the colour temperature of the white light that lighting device 400 sent.
Fig. 5 A to Fig. 5 F is the variation schematic diagram of white light colour temperature under the different situation of the luminous strength ratio that illustrates light-emitting component according to the embodiment of the invention.Shown in Fig. 4 and Fig. 5 A, when first wave is about 450 nanometers, Second Wave is about 615 nanometers, and have the light of the first wavelength, when light with second wave length mixes the about 5000K of colour temperature (being positioned at coordinate points WA) of the white light that forms with the light with three-wavelength, the luminous strength ratio of the first light-emitting component 410, the second light-emitting component 420 and the 3rd light-emitting component 430 is approximately 0.18: 0: 1, that is can be close to the light that only sends by the first light-emitting component 410 and the 3rd light-emitting component 430 this moment and mix the required cold white light of formation.
Shown in Fig. 4 and Fig. 5 B, when first wave is about 450 nanometers, Second Wave is about 615 nanometers, and have the light of the first wavelength, when light with second wave length mixes the about 4500K of colour temperature (being positioned at coordinate points WB) of the white light that forms with the light with three-wavelength, the luminous strength ratio of the first light-emitting component 410, the second light-emitting component 420 and the 3rd light-emitting component 430 is approximately 0.14: 0.04: 1.
Shown in Fig. 4 and Fig. 5 C, when first wave is about 450 nanometers, Second Wave is about 615 nanometers, and have the light of the first wavelength, when light with second wave length mixes the about 4000K of colour temperature (being positioned at coordinate points WC) of the white light that forms with the light with three-wavelength, the luminous strength ratio of the first light-emitting component 410, the second light-emitting component 420 and the 3rd light-emitting component 430 is approximately 0.10: 0.08: 1.
Shown in Fig. 4 and Fig. 5 D, when first wave is about 450 nanometers, Second Wave is about 615 nanometers, and have the light of the first wavelength, when light with second wave length mixes the about 3500K of colour temperature (being positioned at coordinate points WD) of the white light that forms with the light with three-wavelength, the luminous strength ratio of the first light-emitting component 410, the second light-emitting component 420 and the 3rd light-emitting component 430 is approximately 0.07: 0.14: 1.
Shown in Fig. 4 and Fig. 5 E, when first wave is about 450 nanometers, Second Wave is about 615 nanometers, and have the light of the first wavelength, when light with second wave length mixes the about 3000K of colour temperature (being positioned at coordinate points WE) of the white light that forms with the light with three-wavelength, the luminous strength ratio of the first light-emitting component 410, the second light-emitting component 420 and the 3rd light-emitting component 430 is approximately 0.03: 0.23: 1.
Shown in Fig. 4 and Fig. 5 F, when first wave is about 450 nanometers, Second Wave is about 615 nanometers, and have the light of the first wavelength, when light with second wave length mixes the about 2700K of colour temperature (being positioned at coordinate points WF) of the white light that forms with the light with three-wavelength, the luminous strength ratio of the first light-emitting component 410, the second light-emitting component 420 and the 3rd light-emitting component 430 is approximately 0.01: 0.31: 1, that is can be close to the light that only sends by the second light-emitting component 420 and the 3rd light-emitting component 430 this moment and mix the required warm white of formation.
As from the foregoing, by changing luminous intensity ratio corresponding between the first light-emitting component 410, the second light-emitting component 420 and the 3rd light-emitting component 430 threes, just can effectively allow the white light that forms fall within definitely on the blackbody curve, avoid the color of the white light that forms to have the situation of obvious deviation to occur, and the operation of mixed light can more flexiblely be carried out, the white light color that mixed light is formed is relatively even, more can reduce the quantity of required light-emitting component, the size of lighting device itself is reduced, reduce simultaneously cost of manufacture, reduce the price of lighting device itself.
Should be noted, though above-described embodiment only discloses three light-emitting components and the luminous intensity of three light-emitting components is adjusted, right its only is that illustration is with convenient explanation, be not to limit the present invention, in other words, any those skilled in the art all can suitably select one or more the first light-emitting components, the second light-emitting component or the 3rd light-emitting component according to actual demand, and its luminous mixing of mat forms required white light.
In addition, aforementioned light-emitting component can pass through general known substrate (as: ZnSe, Al when making
2O
3, ZnS, GaP substrate), luminescent layer (as: ZnSe, GaN, ZnS, GaP luminescent layer) or fluorescent material (as: YAG, SrGa
2S
4, the SrS material), and utilize the methods such as organometallic chemistry vapour phase epitaxy (MOCVD), liquid phase epitaxy (LPE) or vapor phase epitaxy (VPE) to finish, but make material and mode is not limited with above-mentioned.
Fig. 6 is for to illustrate a kind of flow chart that produces the method for white light according to the embodiment of the invention.Simultaneously with reference to Fig. 2 and Fig. 6, at first in XYZ chromaticity diagram, match the first line stretcher L1 (step S602) according to having the light of the first wavelength and roughly being positioned at the coordinate points (such as coordinate points B and W1) that reference color temperature on the blackbody curve 200 has the white light of high color temperature.Secondly, in XYZ chromaticity diagram, match the second line stretcher L2 (step S604) according to having the light of second wave length and roughly being positioned at the coordinate points (such as coordinate points R and W2) that reference color temperature on the blackbody curve 200 has the white light of lowest color temperature.Then, provide the light with three-wavelength (step S606) according to above-mentioned matching result, for becoming chromaticity coordinates roughly to be positioned at white light on the blackbody curve 200 with the light selecting performance ground mixed-shaped with second wave length with the light with first wavelength, the coordinate points of light in XYZ chromaticity diagram that wherein has three-wavelength roughly is positioned at the first line stretcher L1 and the second line stretcher L2 intersection (such as coordinate points P).In one embodiment, above-mentioned the first wavelength can be between about 440 nanometers and about 460 nanometers, and second wave length can be between about 580 nanometers and about 630 nanometers.
Should be noted that above-mentioned mentioned step except chatting especially bright its order person, all can be adjusted its front and back order according to actual needs, even can carry out simultaneously simultaneously or partly, flow chart shown in Figure 6 is an embodiment only, is not to limit the present invention; In other words, step S602 and step S604 can be simultaneously or to carry out with above-mentioned opposite order, are not limited with shown in Figure 6 at this.
In one embodiment, the method of above-mentioned generation white light can also comprise adjustment and mix the light (such as respective seat punctuate B) with first wavelength, have the light (such as respective seat punctuate R) of second wave length and have the light (such as respective seat punctuate P) of three-wavelength, use and form chromaticity coordinates and roughly be positioned at white light on the blackbody curve 200, the light that wherein has the first wavelength has the light intensity ratio of three-wavelength relatively can be between 0 and about 0.8, light with second wave length has the light intensity ratio of three-wavelength relatively can be between 0 and about 0.8, by this so that have the light of the first wavelength, light and the light with three-wavelength with second wave length can form the white light that roughly is positioned on the blackbody curve after suitably mixing.
In another embodiment, the method of above-mentioned generation white light can also comprise mixes the light (such as respective seat punctuate P) have the light (such as respective seat punctuate B) of the first wavelength and to have three-wavelength, roughly is positioned at the white light (such as respective seat punctuate W1) that has high color temperature on the blackbody curve with formation.Secondly, the method of above-mentioned generation white light can also comprise mixes the light (such as respective seat punctuate P) that has the light (such as respective seat punctuate R) of second wave length and have three-wavelength, roughly is positioned at the white light (such as respective seat punctuate W2) that has lowest color temperature on the blackbody curve to form.
In an inferior embodiment, the X value of respective seat punctuate (X, Y) with light of three-wavelength can be between about 0.336 and about 0.421, and Y value can be between about 0.3915 and about 0.4911.In addition, respective seat punctuate (such as respective seat punctuate P) with light of three-wavelength also can be positioned at First punctuate (0.3360,0.4004), the second coordinate points (0.3790,0.4911), the 3rd coordinate points (0.3770,0.3915) and the formed regional extent of all the people present's punctuate (0.4210,0.4653) in.
By the embodiment of the invention described above as can be known, the method of application of aforementioned lighting device and generation white light, not only can be by changing three luminous intensity ratios that light-emitting component is corresponding, effectively allow the white light that forms fall within definitely on the blackbody curve, avoid the color of the white light that forms to have the situation of obvious deviation to occur, and the operation of mixed light can more flexiblely be carried out, the white light color that mixed light is formed is relatively even, also can reduce the quantity of required light-emitting component, the size of lighting device itself is reduced, reduce simultaneously cost of manufacture, reduce the price of lighting device itself.
Although the present invention discloses as above with execution mode; so it is not to limit the present invention, any those skilled in the art, without departing from the spirit and scope of the present invention; when can being used for a variety of modifications and variations, so protection scope of the present invention is as the criterion when looking the claim person of defining.
Claims (27)
1. lighting device comprises:
One first light-emitting component, this first light-emitting component is in order to send the light with one first wavelength, and this first wavelength is less than about 480 nanometers;
One second light-emitting component, this second light-emitting component is in order to send the light with a second wave length, and this second wave length is greater than about 570 nanometers; And
One the 3rd light-emitting component, the 3rd light-emitting component is in order to send the light with a three-wavelength, and mix with the light with this first wavelength and light selecting performance ground with this second wave length, roughly be positioned at white light on the blackbody curve to be formed on chromaticity coordinates point in the XYZ chromaticity diagram;
The color that wherein has the light of this three-wavelength is determined by linear relationship and the light with this second wave length and the linear relationship with white light respective seat punctuate in this XYZ chromaticity diagram of one second colour temperature of the light with this first wavelength with the white light respective seat punctuate in this XYZ chromaticity diagram with one first colour temperature.
2. lighting device as claimed in claim 1, the light that wherein has this first wavelength forms one first line stretcher with the corresponding coordinate points in this XYZ chromaticity diagram of the white light with this first colour temperature through coupling, light with this second wave length forms one second line stretcher with the corresponding coordinate points in this XYZ chromaticity diagram of the white light with this second colour temperature through coupling, and the coordinate points of light in this XYZ chromaticity diagram with this three-wavelength roughly is positioned at this first line stretcher and this second line stretcher intersection.
3. lighting device as claimed in claim 1 wherein has the light of this three-wavelength in order to form the white light that has high color temperature on corresponding this blackbody curve in the colour temperature scope with a blue light.
4. lighting device as claimed in claim 1 wherein has the light of this three-wavelength in order to form the white light that has lowest color temperature in the colour temperature scope on corresponding this blackbody curve with ruddiness mixing.
5. lighting device as claimed in claim 1, wherein have the light of this three-wavelength in order to mix with the light with this first wavelength and to form the white light with this first colour temperature, the light with this three-wavelength forms the white light with this second colour temperature in order to mix with the light with this second wave length.
6. lighting device as claimed in claim 1, the coordinate points of light in this XYZ chromaticity diagram that wherein has this three-wavelength is not positioned on this blackbody curve.
7. lighting device as claimed in claim 1 wherein has the X value of the coordinate points (X, Y) of light in this XYZ chromaticity diagram of this three-wavelength between about 0.336 and about 0.421, and Y value is between about 0.3915 and about 0.4911.
8. lighting device as claimed in claim 1, the coordinate points of light in this XYZ chromaticity diagram that wherein has this three-wavelength is positioned at a First punctuate (0.3360,0.4004), one second coordinate points (0.3790,0.4911), one the 3rd coordinate points (0.3770,0.3915) and the formed regional extent of all the people present's punctuate (0.4210,0.4653) in.
9. lighting device as claimed in claim 1 also comprises:
One control element is in order to control this first light-emitting component, this second light-emitting component and the 3rd light-emitting component, to change the luminous intensity of this first light-emitting component, this second light-emitting component and the 3rd light-emitting component.
10. lighting device as claimed in claim 9, wherein the luminous intensity ratio of relative the 3rd light-emitting component of this first light-emitting component is between 0 and about 0.8, and the luminous intensity ratio of relative the 3rd light-emitting component of this second light-emitting component is between 0 and about 0.8.
11. lighting device as claimed in claim 9, wherein work as this first wave and be about 450 nanometers, this Second Wave is about 615 nanometers, and have the light of this first wavelength, when light with this second wave length mixes the about 5000K of colour temperature of the white light that forms with the light with this three-wavelength, the luminous strength ratio of this first light-emitting component, this second light-emitting component and the 3rd light-emitting component is approximately 0.18: 0: 1.
12. lighting device as claimed in claim 9, wherein work as this first wave and be about 450 nanometers, this Second Wave is about 615 nanometers, and have the light of this first wavelength, when light with this second wave length mixes the about 4500K of colour temperature of the white light that forms with the light with this three-wavelength, the luminous strength ratio of this first light-emitting component, this second light-emitting component and the 3rd light-emitting component is approximately 0.14: 0.04: 1.
13. lighting device as claimed in claim 9, wherein work as this first wave and be about 450 nanometers, this Second Wave is about 615 nanometers, and have the light of this first wavelength, when light with this second wave length mixes the about 4000K of colour temperature of the white light that forms with the light with this three-wavelength, the luminous strength ratio of this first light-emitting component, this second light-emitting component and the 3rd light-emitting component is approximately 0.10: 0.08: 1.
14. lighting device as claimed in claim 9, wherein work as this first wave and be about 450 nanometers, this Second Wave is about 615 nanometers, and have the light of this first wavelength, when light with this second wave length mixes the about 3500K of colour temperature of the white light that forms with the light with this three-wavelength, the luminous strength ratio of this first light-emitting component, this second light-emitting component and the 3rd light-emitting component is approximately 0.07: 0.14: 1.
15. lighting device as claimed in claim 9, wherein work as this first wave and be about 450 nanometers, this Second Wave is about 615 nanometers, and have the light of this first wavelength, when light with this second wave length mixes the about 3000K of colour temperature of the white light that forms with the light with this three-wavelength, the luminous strength ratio of this first light-emitting component, this second light-emitting component and the 3rd light-emitting component is approximately 0.03: 0.23: 1.
16. lighting device as claimed in claim 9, wherein work as this first wave and be about 450 nanometers, this Second Wave is about 615 nanometers, and have the light of this first wavelength, when light with this second wave length mixes the about 2700K of colour temperature of the white light that forms with the light with this three-wavelength, the luminous strength ratio of this first light-emitting component, this second light-emitting component and the 3rd light-emitting component is approximately 0.01: 0.31: 1.
17. a lighting device comprises:
One first light-emitting component, this first light-emitting component is in order to send the light with one first wavelength, and this first wavelength is between about 440 nanometers and about 460 nanometers;
One second light-emitting component, this second light-emitting component is in order to send the light with a second wave length, and this second wave length is between about 580 nanometers and about 630 nanometers; And
One the 3rd light-emitting component, the 3rd light-emitting component is in order to send the light with a three-wavelength, be formed in the XYZ chromaticity diagram chromaticity coordinates point to mix with the light with this first wavelength and be positioned at roughly that a colour temperature scope has the white light that high color temperature is arranged on the blackbody curve, or mix with the light with this second wave length and form chromaticity coordinates point and be positioned at roughly that this reference color temperature has the white light that a lowest color temperature is arranged on this blackbody curve.
18. lighting device as claimed in claim 17 wherein has the X value of the coordinate points (X, Y) of light in this XYZ chromaticity diagram of this three-wavelength between about 0.336 and about 0.421, Y value is between about 0.3915 and about 0.4911.
19. lighting device as claimed in claim 17, the coordinate points of light in this XYZ chromaticity diagram that wherein has this three-wavelength is positioned at a First punctuate (0.3360,0.4004), one second coordinate points (0.3790,0.4911), one the 3rd coordinate points (0.3770,0.3915) and the formed regional extent of all the people present's punctuate (0.4210,0.4653) in.
20. lighting device as claimed in claim 17 also comprises:
One control element, in order to control this first light-emitting component, this second light-emitting component and the 3rd light-emitting component, wherein the luminous intensity ratio of relative the 3rd light-emitting component of this first light-emitting component is between 0 and about 0.8, and the luminous intensity ratio of relative the 3rd light-emitting component of this second light-emitting component is between 0 and about 0.8.
21. a method that produces white light comprises step:
In an XYZ chromaticity diagram, match one first line stretcher according to the coordinate points that has the light of one first wavelength and the colour temperature scope on the blackbody curve of roughly being positioned at has a white light of high color temperature;
In this XYZ chromaticity diagram, match one second line stretcher according to having the light of a second wave length and roughly being positioned at the coordinate points that this reference color temperature on this blackbody curve has the white light of a lowest color temperature; And
Light with a three-wavelength is provided according to matching result, form white light for mixing with the light selecting performance ground with this second wave length with the light with this first wavelength, the coordinate points of light in this XYZ chromaticity diagram that wherein has this three-wavelength roughly is positioned at this first line stretcher and this second line stretcher intersection.
22. the method for generation white light as claimed in claim 21 also comprises step:
Adjust and mix light with this first wavelength, have the light of this second wave length and have the light of this three-wavelength, wherein have light intensity ratio that the light of this first wavelength has this three-wavelength relatively between 0 and about 0.8, the light with this second wave length has the light intensity ratio of this three-wavelength relatively between 0 and about 0.8.
23. the method for generation white light as claimed in claim 21 also comprises step:
Mix the light with this first wavelength and the light with this three-wavelength, roughly be positioned at the white light that has this high color temperature on this blackbody curve to form.
24. the method for generation white light as claimed in claim 21 also comprises step:
Mix the light with this second wave length and the light with this three-wavelength, roughly be positioned at the white light that has this lowest color temperature on this blackbody curve to form.
25. the method for generation white light as claimed in claim 21, the coordinate points of light in this XYZ chromaticity diagram that wherein has this three-wavelength is positioned at a First punctuate (0.3360,0.4004), one second coordinate points (0.3790,0.4911), one the 3rd coordinate points (0.3770,0.3915) and the formed regional extent of all the people present's punctuate (0.4210,0.4653) in.
26. the method for generation white light as claimed in claim 21 wherein has the X value of the coordinate points (X, Y) of light in this XYZ chromaticity diagram of this three-wavelength between about 0.336 and about 0.421, Y value is between about 0.3915 and about 0.4911.
27. the method for generation white light as claimed in claim 21, wherein this first wavelength is between about 440 nanometers and about 460 nanometers, and this second wave length is between about 580 nanometers and about 630 nanometers.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20050117334A1 (en) * | 2003-11-27 | 2005-06-02 | Kun-Chui Lee | Light emitting device |
| CN101438630A (en) * | 2006-04-18 | 2009-05-20 | 科锐Led照明科技公司 | Lighting device and lighting method |
| CN101688644A (en) * | 2007-05-08 | 2010-03-31 | 科锐Led照明科技公司 | Lighting device and lighting method |
| CN101821544A (en) * | 2007-10-10 | 2010-09-01 | 科锐Led照明科技公司 | Lighting device and method of making |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050117334A1 (en) * | 2003-11-27 | 2005-06-02 | Kun-Chui Lee | Light emitting device |
| CN101438630A (en) * | 2006-04-18 | 2009-05-20 | 科锐Led照明科技公司 | Lighting device and lighting method |
| CN101688644A (en) * | 2007-05-08 | 2010-03-31 | 科锐Led照明科技公司 | Lighting device and lighting method |
| CN101821544A (en) * | 2007-10-10 | 2010-09-01 | 科锐Led照明科技公司 | Lighting device and method of making |
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