CN107621746A - Light-emitting device and relevant projecting system - Google Patents

Light-emitting device and relevant projecting system Download PDF

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Publication number
CN107621746A
CN107621746A CN201610562701.3A CN201610562701A CN107621746A CN 107621746 A CN107621746 A CN 107621746A CN 201610562701 A CN201610562701 A CN 201610562701A CN 107621746 A CN107621746 A CN 107621746A
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CN
China
Prior art keywords
light
color
light source
emitting device
sectional area
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Granted
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CN201610562701.3A
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Chinese (zh)
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CN107621746B (en
Inventor
郭祖强
陈红运
李屹
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Shenzhen Appotronics Corp Ltd
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Appotronics Corp Ltd
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Priority to CN201610562701.3A priority Critical patent/CN107621746B/en
Priority to PCT/CN2017/081438 priority patent/WO2018010467A1/en
Publication of CN107621746A publication Critical patent/CN107621746A/en
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Publication of CN107621746B publication Critical patent/CN107621746B/en
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    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Projection Apparatus (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)

Abstract

The present invention relates to a kind of light-emitting device and relevant projecting system.The light-emitting device includes the first light source, Wavelength converter, secondary light source, light source control portion and adjusting means.The Wavelength converter includes the first sectional area, and first sectional area carries the mixture of the first color fluorescence material and the second color fluorescence material.The secondary light source is used to launching the first color of light, the first color of light of secondary light source transmitting be used for the Wavelength converter caused by the first color of light carry out closing light and form the first color of light that the light-emitting device sends.The light source control portion adjusts the driving current of first light source and the driving current of the secondary light source, to cause the actual color coordinate of the first color of light that the light-emitting device sends and intrinsic brilliance consistent with reference color coordinate with the normal brightness of the first predetermined color of light.The light-emitting device is lighted with relevant projecting system or display effect is preferable.

Description

Light-emitting device and relevant projecting system
Technical field
The present invention relates to projection art, more particularly to a kind of light-emitting device and relevant projecting system.
Background technology
Existing optical projection system generally comprises light-emitting device, light valve and control device, and the light-emitting device is emitted RGB three Kind color light, the control device are used to control the light valve to receive three kinds of color lights and according to input image data Modulation image.However, the light for each color that existing light-emitting device is sent or the image of light valve modulation all there may be partially The bad phenomenon of white balance caused by color or luminance shortage, influence the projected picture effect of the optical projection system.
The content of the invention
To solve the problems, such as prior art light-emitting device and optical projection system white balance is bad influences display effect, it is necessary to It is proposed a kind of luminous or the preferable light-emitting device of display effect and optical projection system.
A kind of light-emitting device, it includes the first light source, Wavelength converter, secondary light source, light source control portion and regulation dress Put.The Wavelength converter includes at least the first sectional area, and first sectional area carries the first color fluorescence material With the mixture of the second color fluorescence material, the first color fluorescence material is excited by the light of first light source and produces One color of light, the second color fluorescence material are excited by the light of first light source and produce the second color of light, and described second Color of light can isolate the first color of light and another color of light.The secondary light source is used to launching the first color of light, and described the Two light sources transmitting the first color of light be used for the Wavelength converter caused by the first color of light carry out closing light and form institute The first color of light that light-emitting device is sent is stated, it is glimmering that the first color of light caused by the Wavelength converter includes first color The first color of light in second color of light caused by first color of light caused by luminescent material and the second color fluorescence material. One in actual color coordinate and intrinsic brilliance of the adjusting means for obtaining the first color of light that the light-emitting device is sent Kind or two kinds, and by one or both of the actual color coordinate of first color of light of acquisition and intrinsic brilliance with it is predetermined One or both of the reference color coordinate of first color of light and normal brightness compare.The light source control portion is comparing The driving current of the driving current and the secondary light source of first light source is adjusted when the two is unequal, it is described luminous to cause The actual color coordinate and intrinsic brilliance of the first color of light that device is sent and the reference color coordinate and standard of first color of light Brightness is consistent.
Preferably, the light-emitting device also includes detection means, and the detection means is used to detect the light-emitting device hair One or both of actual color coordinate and intrinsic brilliance of the first color of light gone out, and by the reality of the first color of light detected One or both of border chromaticity coordinates and intrinsic brilliance are supplied to the adjusting means.
Preferably, when the two to compare is unequal, the light source control portion adjusts the driving electricity of the first light source Stream make it that the brightness of the first color of light caused by Wavelength converter is Y1 ', if now the first face caused by Wavelength converter The chromaticity coordinates of coloured light is (x1 ', y1 '), and the adjusting means also controls the light source control portion to adjust the secondary light source Driving current make it that the brightness of the first color of light of the secondary light source transmitting is Y2 '；Above-mentioned each parameter Y1 ', Y2 ', x1 ', y1 ' Meet below equation：Y1+Y2=Y1 '+Y2 '；(Y1 × x1/y1+Y2 × x2/y2)/(Y1/y1+Y2/y2)=(Y1 ' × x1 '/ y1’+Y2’×x2/y2)/(Y1’/y1+Y2’/y2)；And (Y1+Y2)/(Y1/y1+Y2/y2)=(Y1 '+Y2 ')/(Y1 '/y1+ Y2’/y2)；Wherein：The first color of light that the light-emitting device is sent under one original state reaches the reference color coordinate and described During normal brightness, the brightness of the first color of light caused by the Wavelength converter is expressed as Y1, chromaticity coordinates be expressed as (x1, Y1), the brightness of the first color of light of the secondary light source transmitting is expressed as Y2, chromaticity coordinates is expressed as (x2, y2).
Preferably, the original state is the state that aging does not occur for the first color fluorescence material and the second fluorescent material.
Preferably, the Wavelength converter also includes the second sectional area, and second sectional area carries the 3rd face Color fluorescent material, the 3rd color fluorescence material are excited by the light of first light source and produce the 3rd color of light；The tune Regulating device is additionally operable to obtain the intrinsic brilliance for the 3rd color of light that second sectional area is sent, and the 3rd color by acquisition Compared with the normal brightness of the 3rd predetermined color of light, the light source control portion is comparing the intrinsic brilliance of light The driving current of first light source is adjusted when the two is unequal, to cause the 3rd color of light that second sectional area is sent Intrinsic brilliance it is consistent with the normal brightness of the 3rd color of light.
Preferably, the first color fluorescence material is red fluorescence material, and the second color fluorescence material is yellow Fluorescent material, the 3rd color fluorescence material are green fluorescent material, and first color of light is red light, second face Coloured light is sodium yellow, and the 3rd color of light is green light, and second color of light can isolate red light and green light.
Preferably, in one embodiment, the Wavelength converter also includes the 3rd sectional area, first light source The 4th color of light is sent, the 3rd sectional area is transmitted or scattered and projected to the 4th color of light of first light source 4th color of light；The adjusting means is additionally operable to obtain the intrinsic brilliance for the 4th color of light that the 3rd sectional area is sent, And the intrinsic brilliance of the 4th color of light of acquisition compares with the normal brightness of the 4th predetermined color of light, the light source Control unit adjusts the driving current of first light source when the two to compare is unequal, to cause the 3rd sectional area The intrinsic brilliance of the 4th color of light sent is consistent with the normal brightness of the 4th color of light.
Preferably, in another embodiment, the Wavelength converter also includes the 3rd sectional area, described 3rd point Section region carries the 4th color fluorescence material, and first light source sends ultraviolet light, and the 4th color fluorescence material is by described The light of first light source excites and produces the 4th color of light；The adjusting means is additionally operable to obtain what the 3rd sectional area was sent The intrinsic brilliance of 4th color of light, and by the intrinsic brilliance of the 4th color of light of acquisition with the 4th predetermined color of light Normal brightness compares, and the light source control portion adjusts the driving electricity of first light source when the two to compare is unequal Stream, with the intrinsic brilliance of the 4th color of light and the normal brightness of the 4th color of light for causing the 3rd sectional area to send Unanimously.
Preferably, the 4th color of light is blue light.
The present invention also provides a kind of optical projection system, and it includes light-emitting device, and the light-emitting device includes the first light source, wavelength Conversion equipment, secondary light source, light source control portion and adjusting means.The Wavelength converter includes at least the first sectional area, First sectional area carries the mixture of the first color fluorescence material and the second color fluorescence material, and first color is glimmering Luminescent material is excited by the light of first light source and produces the first color of light, and the second color fluorescence material is by first light The light in source excites and produces the second color of light, and second color of light can isolate the first color of light and another color of light.Institute State secondary light source be used for launch the first color of light, the first color of light of secondary light source transmitting is used for and wavelength convert dress The first color of light carries out closing light and forms the first color of light that the light-emitting device is sent caused by putting, the Wavelength converter Caused first color of light includes the first color of light caused by the first color fluorescence material and second color fluorescence The first color of light in second color of light caused by material.The adjusting means is used to obtain the light-emitting device is sent first One or both of actual color coordinate and intrinsic brilliance of color of light, and the actual color of first color of light of acquisition is sat Mark and one or both of intrinsic brilliance and one kind in the reference color coordinate and normal brightness of the first predetermined color of light or Two kinds compare.The light source control portion adjusts driving current and the institute of first light source when the two to compare is unequal The driving current of secondary light source is stated, to cause the actual color coordinate and intrinsic brilliance of the first color of light that the light-emitting device sends It is consistent with the reference color coordinate and normal brightness of first color of light.
Preferably, the light-emitting device also includes detection means, and the detection means is used to detect the light-emitting device hair One or both of actual color coordinate and intrinsic brilliance of the first color of light gone out, and by the reality of the first color of light detected One or both of border chromaticity coordinates and intrinsic brilliance are supplied to the adjusting means.
Preferably, when the two to compare is unequal, the light source control portion adjusts the driving electricity of the first light source Stream make it that the brightness of the first color of light caused by Wavelength converter is Y1 ', if now the first face caused by Wavelength converter The chromaticity coordinates of coloured light is (x1 ', y1 '), and the adjusting means also controls the light source control portion to adjust the secondary light source Driving current make it that the brightness of the first color of light of the secondary light source transmitting is Y2 '；Above-mentioned each parameter Y1 ', Y2 ', x1 ', y1 ' Meet below equation：Y1+Y2=Y1 '+Y2 '；(Y1 × x1/y1+Y2 × x2/y2)/(Y1/y1+Y2/y2)=(Y1 ' × x1 '/ y1’+Y2’×x2/y2)/(Y1’/y1+Y2’/y2)；And (Y1+Y2)/(Y1/y1+Y2/y2)=(Y1 '+Y2 ')/(Y1 '/y1+ Y2’/y2)；Wherein：The first color of light that the light-emitting device is sent under one original state reaches the reference color coordinate and described During normal brightness, the brightness of the first color of light caused by the Wavelength converter is expressed as Y1, chromaticity coordinates be expressed as (x1, Y1), the brightness of the first color of light of the secondary light source transmitting is expressed as Y2, chromaticity coordinates is expressed as (x2, y2).
Preferably, the original state is the state that aging does not occur for the first color fluorescence material and the second fluorescent material.
Preferably, the Wavelength converter also includes the second sectional area, and second sectional area carries the 3rd face Color fluorescent material, the 3rd color fluorescence material are excited by the light of first light source and produce the 3rd color of light.
Preferably, the adjusting means be additionally operable to obtain the 3rd color of light that second sectional area is sent reality it is bright Degree, and the intrinsic brilliance of the 3rd color of light of acquisition is compared with the normal brightness of the 3rd predetermined color of light, it is described Light source control portion adjusts the driving current of first light source when the two to compare is unequal, to cause second segmentation The intrinsic brilliance for the 3rd color of light that region is sent is consistent with the normal brightness of the 3rd color of light.
Preferably, the first color fluorescence material is red fluorescence material, and the second color fluorescence material is yellow Fluorescent material, the 3rd color fluorescence material are green fluorescent material, and first color of light is red light, second face Coloured light is sodium yellow, and the 3rd color of light is green light, and second color of light can isolate red light and green light.
Preferably, in one embodiment, the Wavelength converter also includes the 3rd sectional area, first light source The 4th color of light is sent, the 3rd sectional area is transmitted or scattered and projected to the 4th color of light of first light source 4th color of light；The adjusting means is additionally operable to obtain the intrinsic brilliance for the 4th color of light that the 3rd sectional area is sent, And the intrinsic brilliance of the 4th color of light of acquisition compares with the normal brightness of the 4th predetermined color of light, the light source Control unit adjusts the driving current of first light source when the two to compare is unequal, to cause the 3rd sectional area The intrinsic brilliance of the 4th color of light sent is consistent with the normal brightness of the 4th color of light.
Preferably, in another embodiment, the Wavelength converter also includes the 3rd sectional area, described 3rd point Section region carries the 4th color fluorescence material, and first light source sends ultraviolet light, and the 4th color fluorescence material is by described The light of first light source excites and produces the 4th color of light；The adjusting means is additionally operable to obtain what the 3rd sectional area was sent The intrinsic brilliance of 4th color of light, and by the intrinsic brilliance of the 4th color of light of acquisition with the 4th predetermined color of light Normal brightness compares, and the light source control portion adjusts the driving electricity of first light source when the two to compare is unequal Stream, with the intrinsic brilliance of the 4th color of light and the normal brightness of the 4th color of light for causing the 3rd sectional area to send Unanimously.
Preferably, the 4th color of light is blue light.
The present invention further provides a kind of optical projection system, the optical projection system includes light-emitting device, light valve, light source control portion And adjusting means.The light-emitting device includes the first light source, Wavelength converter and secondary light source.The Wavelength converter bag At least the first sectional area is included, the first sectional area first color fluorescence material of carrying and the second color fluorescence material mix Zoarium, the first color fluorescence material are excited by the light of first light source and produce the first color of light, second color Fluorescent material is excited by the light of first light source and produces the second color of light, and second color of light can isolate the first face Coloured light and another color of light.The secondary light source, for launching the first color of light, the first color of light of the secondary light source transmitting For with the Wavelength converter caused by the first color of light carry out closing light and form the first face that the light-emitting device sends Coloured light, the first color of light caused by the Wavelength converter include the first color of light caused by the first color fluorescence material And the first color of light in the second color of light caused by the second color fluorescence material.The light valve is used to receive the hair The first color of light that electro-optical device is sent carries out image modulation to be emitted modulation figure with the second color of light and according to predetermined image data As light.The projection lens is used to receive the modulation image light to show predetermined image.The adjusting means is used to obtain Take one in the actual color coordinate and intrinsic brilliance of the first color of light in the modulation image light or the predetermined image Kind or two kinds, and the light valve of acquisition is sent or the actual color of first color of light in the predetermined image sit Mark and one or both of intrinsic brilliance and one kind in the reference color coordinate and normal brightness of the first predetermined color of light or Two kinds compare, and the light source control portion adjusts driving current and the institute of first light source when the two to compare is unequal The driving current of secondary light source is stated, to cause the actual color coordinate and intrinsic brilliance of the first color of light that the light-emitting device sends It is consistent with the reference color coordinate and normal brightness of first color of light.
Compared to prior art, light-emitting device of the present invention and optical projection system are by adjusting the driving current of first light source And the driving current of the secondary light source is to cause modulation image light that the light-emitting device sends, described or described predetermined The actual color coordinate and intrinsic brilliance of the first color of light in image, make it consistent with the reference color coordinate and normal brightness, The bad phenomenon of white balance caused by colour cast or luminance shortage can be effectively improved, improves Projection Display effect.
Brief description of the drawings
Fig. 1 is the structural representation of light-emitting device first embodiment of the present invention.
Fig. 2 is a kind of planar structure schematic diagram of Wavelength converter.
Fig. 3 is the light-source system for a variety of colors light that the first light source projects via Wavelength converter.
Fig. 4 is the timing diagram for the compensation light that secondary light source is sent.
Fig. 5 is that the spectrum of light that Wavelength converter is sent before and after fluorescent material aging compares schematic diagram.
Fig. 6 is the structural representation of light-emitting device second embodiment of the present invention.
Fig. 7 is the structural representation of the embodiment of light-emitting device the 3rd of the present invention.
Fig. 8 is the structural representation of the embodiment of light-emitting device the 4th of the present invention.
Fig. 9 is the timing diagram for the compensation light that the 3rd light source shown in Fig. 8 is sent.
Figure 10 is the block diagram of optical projection system first embodiment of the present invention.
Figure 11 is the block diagram of optical projection system second embodiment of the present invention.
Main element symbol description
Light-emitting device 100,200,300,400
Light source assembly 110
Wavelength converter 120,220,320,420,620
Detect adjusting means 130,630
First light source 112,212,312,412,612
Secondary light source 114,214,314,414,614
Multiplexing apparatus 140,242,340,440
First sectional area 122
Second sectional area 124
3rd sectional area 126
Even light and light relay system 150,250,350,450
Reflection unit 360,460
Detection means 132,632
Adjusting means 134,634
Light source control portion 136,636
Optical projection system 50,60
Light-emitting device 41,61,600
Light valve 52,62
Projection lens 54,64
Projection screen 55,65
Control device 53
First period T1
Second period T2
3rd period T3
Green spectrum curve G1, G2
Blue light spectrum curve B1, B2
Yellow spectrum curve Ye1, Ye2
Red-light spectrum curve R1, R2
Following embodiment will combine above-mentioned accompanying drawing and further illustrate the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made Embodiment, belong to the scope of protection of the invention.In the case where not conflicting, the feature in following embodiment and embodiment can To be mutually combined.
It should be noted that in the present invention, when a component is considered as with another component " being connected ", it can be with It is to be joined directly together with another component or be indirectly connected by component placed in the middle and another component.
Unless otherwise defined, all of technologies and scientific terms used here by the article is with belonging to technical field of the invention The implication that technical staff is generally understood that is identical.Term used in the description of the invention herein is intended merely to description tool The purpose of the embodiment of body, it is not intended that in the limitation present invention.
In order to facilitate the understanding of the purposes, features and advantages of the present invention, below in conjunction with the accompanying drawings to the present invention Embodiment be described in detail.
Many details are elaborated in the following description to facilitate a thorough understanding of the present invention, still the present invention can be with It is different from other manner described here using other to implement, those skilled in the art can be without prejudice to intension of the present invention In the case of do similar application, therefore the present invention is not limited by following public specific embodiment.
Secondly, combination schematic diagram of the present invention is described in detail, when the embodiment of the present invention is described in detail, for purposes of illustration only, table Show that the profile of device architecture can disobey general proportion and make partial enlargement, and the schematic diagram is example, and it should not herein Limit the scope of protection of the invention.In addition, the three-dimensional space of length, width and depth should be included in actual fabrication.
It is described in detail below by several embodiments.
The light-emitting device of first embodiment
Referring to Fig. 1, Fig. 1 is the structural representation of the first embodiment of light-emitting device 100 of the present invention.The light-emitting device 100 include light source assembly 110 and Wavelength converter 120.
The light source assembly 110 includes the first light source 112 and secondary light source 114.First light source 112 is exciting light Source, for sending exciting light, such as blue excitation light, first light source 112 can be blue laser light source (or blue laser Device).In one kind changes embodiment, first light source 112 can also be the light source of other colors, not with blue-light source It is limited, such as described first light source 112 can be Ultra-Violet Laser light source (or ultraviolet laser), so as to send uv excitation light. Further, first light source 112 is preferably semiconductor laser light resource, to provide the exciting light of high brightness.
The secondary light source 114 can be compensatory light, and light is compensated for producing, such as red compensation light, but not with red Colorimetric compensation light is limited, and when needing to compensate the light of other colors such as blue or green, the secondary light source 114 can also be hair Go out the supplement light source of the light of other colors such as blueness or green.Further, the secondary light source 114 can be light-emitting diodes Pipe light source, such as red light emitting diodes, send red compensation light.
In present embodiment, the light-emitting device 100 also includes Multiplexing apparatus 140, swashs caused by first light source 112 Luminous reentered with the caused compensation light of the secondary light source 114 after the Multiplexing apparatus 140 carries out closing light is incident upon the wavelength Conversion equipment 120.Specifically, in present embodiment, the Multiplexing apparatus 140 is arranged at first light source 112 and the ripple Between long conversion equipment 120, it can be a closing light diaphragm, and the closing light diaphragm can be into 45 degree relative to first light source Overturning angle is set, and the exciting light that first light source 112 is sent is incident to the wavelength directly through the Multiplexing apparatus 140 and turned Changing device 120.The secondary light source 114 is arranged above or below the Multiplexing apparatus 140, the Multiplexing apparatus 140 also phase Set for the secondary light source 114 into 45 degree of overturning angles, the compensation light that the secondary light source 114 is sent is incident to the closing light Device 140, and provided after the Multiplexing apparatus 140 reflection to the Wavelength converter 120.
The Wavelength converter 120 is used to receive the light of the light source assembly 110 via the Multiplexing apparatus 140 and penetrate Go out the light of at least two color.Referring to Fig. 2, Fig. 2 is the planar structure schematic diagram of the Wavelength converter 120.Institute It is discoid colour wheel to state Wavelength converter 120, and it includes at least two sectional areas set along its circular motion direction (such as 122,124,126), for projecting at least two light respectively.In present embodiment, the Wavelength converter 120 is Transmission-type Wavelength converter, i.e., the light of described light source assembly 110 is incident from the side of the Wavelength converter 120, and The opposite side of the Wavelength converter 120 projects at least two light.It is appreciated that at least two sectional area The size of (such as 122,124,126) can according to be actually needed be set as it is identical or different.
In present embodiment, the quantity of the sectional area (122,124,126) is three, the Wavelength converter 120 Including the first sectional area 122, the second sectional area 124 and the 3rd sectional area 126.
First sectional area 122 carries the mixture of the first color fluorescence material and the second color fluorescence material, institute State the first color fluorescence material to be excited by the light of first light source 112 and produce the first color of light, second color fluorescence Material is excited by the light of first light source 112 and produces the second color of light, and second color of light can isolate the first face Coloured light and the 3rd color of light.It is appreciated that the first color fluorescence material can be uniform with the second color fluorescence material Mix and be arranged at first sectional area 122, can also subregion be arranged at first sectional area 122.This embodiment party In formula, the first color fluorescence material is red fluorescence material, and the second color fluorescence material is yellow fluorescent material.Institute It is red light to state the first color of light.Second color of light is sodium yellow.3rd color of light is green light.It is appreciated that First color of light caused by the Wavelength converter 120 include the first color of light caused by the first color fluorescence material with And the first color of light in the second color of light caused by the second color fluorescence material.
Second sectional area 124 carries the 3rd color fluorescence material, and the 3rd color fluorescence material is by described the The light of one light source excites and produces the 3rd color of light.The 3rd color fluorescence material is green fluorescent material, the 3rd face Coloured light is green light.
3rd sectional area 126 receives the light of first light source 112 and is emitted the 4th color of light.Described Four color of light are blue light.It is appreciated that in present embodiment, first color of light, the 3rd color of light and the 4th color of light For three primary colours light, such as red, green, blue three primary colours light.
In one embodiment, first light source 112 sends blue excitation light, and the 3rd sectional area 126 can Transmitted or scattered with the 4th color of light to first light source and project the 4th color of light.Preferably, described 3rd point Section is provided with scattering layer on region 126, and the scattering layer sends blue excitation light to first light source 112 and is scattered, So as to which the 3rd sectional area 126 sends the 4th color of light.
In another embodiment, first light source 112 sends burst of ultraviolel light, the 3rd sectional area 126 The 4th color fluorescence material is carried, the 4th color fluorescence material is excited by the light of first light source and produces the 4th color Light, so as to which the 3rd sectional area 126 sends the 4th color of light.
It is appreciated that in present embodiment, the secondary light source 114 is used to launch the first color of light.The secondary light source First color of light of 112 transmittings carries out closing light with the first color of light caused by the Wavelength converter 120 and forms the hair The first color of light that electro-optical device 100 is sent.
Refer to light-source system when Fig. 3 and Fig. 4, Fig. 3 and Fig. 4 are the work of light-emitting device 100 of the present invention.Specifically Ground, Fig. 3 are the light-source systems for a variety of colors light that first light source 112 projects via Wavelength converter 120.In Fig. 3 The driving current value of the first light source 112 shown is different during each color of light is emitted, but the present invention is not limited thereto； During each color of light is emitted, the driving current value of the first light source 112 can be with identical.Fig. 4 is that the secondary light source 114 is sent Compensate the timing diagram of light.When the light-emitting device 100 works, the Wavelength converter 120 using the center of its circumference as axle not Disconnected rotation so that first sectional area 122, the second sectional area 124 and the received in sequence of the 3rd sectional area 126 are described in The light that Multiplexing apparatus 140 projects.
In the first embodiment, first light source is blue light excitation source, in the first period T1, first light source 112 send blue light, and the secondary light source 114 sends red light, and first sectional area 126 is from the Multiplexing apparatus 140 The blue light of first light source 112 and the red light of secondary light source 114 are received, the blue light excites first sectional area 126 red fluorescence material produces red light and sodium yellow with yellow fluorescent material and projects the Wavelength converter 120, institute The red light for stating secondary light source 114 directly projects the Wavelength converter 120 via first sectional area 126, now, The light-emitting device 100 sends red light and sodium yellow.In the second period T2, first light source 112 sends blue light, described Second sectional area 124 receives the blue light that the Multiplexing apparatus 140 projects, and the blue light excites second sectional area 124 green fluorescent material produces green light and projects the Wavelength converter 120, and now, the light-emitting device 100 is sent Green light.In the 3rd period T3, first light source 112 sends blue light, and the 3rd sectional area 126 receives the closing light The blue light that device 140 projects, the blue light projects after being scattered via the 3rd sectional area 126, now, described Light-emitting device 100 sends blue light.Find out from the lighting timings of light-emitting device 100 described above, in the first period T1, The red light that the light-emitting device 100 is sent excites red caused by first sectional area 126 including first light source 112 The compensation red light that coloured light (red light that i.e. described Wavelength converter 120 is sent) and secondary light source 114 project, Ci Zhongshe Meter can be effectively improved the phenomenon of the red light intensity deficiency of the less efficient caused light-emitting device 100 of existing red fluorescence material, Improve red light intensity.It is appreciated that the red light that the Wavelength converter 120 is sent excites including first light source 112 Red light caused by first color fluorescence material of first sectional area 126, and excite first sectional area 126 The second color fluorescence material caused by red light part in sodium yellow.
However, it will be understood that in another embodiment, first light source is ultraviolet excitation light source, at first Section T1, first light source 112 send ultraviolet light, and the secondary light source 114 sends red light, first sectional area 126 The ultraviolet light of first light source 112 and the red light of secondary light source 114, the ultraviolet light are received from the Multiplexing apparatus 140 The red fluorescence material of first sectional area 126 and yellow fluorescent material is excited to produce red light and sodium yellow and project institute State Wavelength converter 120, the red light of the secondary light source 114 directly projects described via first sectional area 126 Wavelength converter 120, now, the light-emitting device 100 send red light and sodium yellow.In the second period T2, described first Light source 112 sends ultraviolet light, and second sectional area 124 receives the ultraviolet light that the Multiplexing apparatus 140 projects, described ultraviolet Light excites the green fluorescent material of second sectional area 124 to produce green light and projects the Wavelength converter 120, this When, the light-emitting device 100 sends green light.In the 3rd period T3, first light source 112 sends ultraviolet light, and the described 3rd Sectional area 126 receives the ultraviolet light that the Multiplexing apparatus 140 projects, the 3rd sectional area 126 described in the ultraviolet excitation Blue fluorescent material produce and blue light and project the Wavelength converter 120, now, the light-emitting device 100 sends indigo plant Coloured light.Find out from the lighting timings of light-emitting device 100 described above, in first period T1, the light-emitting device 100 is sent out The red light gone out excites (the i.e. described wavelength turn of red light caused by first sectional area 126 including first light source 112 The red light that changing device 120 is sent) and the compensation red light that projects of secondary light source 114, such a design can be effectively improved existing The phenomenon of the red light intensity deficiency of light-emitting device 100 caused by having red fluorescence material less efficient, improves red light intensity.Can be with Understand, the red light that the Wavelength converter 120 is sent excites first sectional area including first light source 112 Red light caused by 126 the first color fluorescence material, and excite the second color fluorescence material of first sectional area 126 Red light part in sodium yellow caused by material.
Further, the light-emitting device 100 can also include even light and light relay system 150, in the even light and light The light of the injection of Wavelength converter 120 is received after system 150, the light for the Wavelength converter 120 to be projected enters The even light of row, collection and shaping (such as so that the projected spot of light beam meets predetermined shape) etc. provide to optical projection system after processing Light valve so that the light valve (such as DMD/LCD/LCOS spatial light modulators) is according to predetermined image data to the wavelength convert The light that device 120 projects is modulated to cause homolographic projection camera lens to show predetermined image.
It is appreciated that to ensure that the modulation timing of the light-emitting device 100 and the light valve is adapted, the light source assembly 110 unlatching and the rotary speed and sequential of closing timing and the Wavelength converter 120 need to cooperate, specifically, can So that unlatching and closing, the wavelength turn of the light source assembly 110 are uniformly controlled according to input image data by control device The rotation of changing device 120 and the modulation timing of the light valve, to cause three to be adapted.
However, in above-mentioned light-emitting device 100, on the Wavelength converter 120 fluorescent material of each sectional area with Aging occurs in the elongated of usage time, and this will cause first color of light caused by the Wavelength converter 120 and the Second colors light, the 3rd color of light and the 4th color of light tail off.For the above situation, if what the Wavelength converter 120 was sent 3rd color of light and the 4th color of light are tailed off due to fluorescent material aging (it is appreciated that the 4th color of light herein is by swashing The 4th color of light in embodiment caused by light emitting source excitated fluorescent powder), can be by adjusting the driving of first light source 112 Electric current supplements the 3rd color of light and the 4th color of light.
Specifically, referring to Fig. 5, Fig. 5 is light that the Wavelength converter 120 is sent before and after fluorescent material aging Spectrum compares schematic diagram, and dotted line is spectral curve of the light that sends of the Wavelength converter 120 before fluorescent material aging (can also turn into standard curve), solid line are spectrum of the light that sends of the Wavelength converter 120 after fluorescent material aging Curve map.Because the green spectrum curve G1 before and after fluorescent material aging to G2 waveform is similar, by described second Period T2 adjusts the driving current of first light source 112 to supplement the 3rd color of light (i.e. green light), can cause The green spectrum curve G1 of green spectrum curve and standard curve after regulation is essentially coincided, and adjusts the color of front and rear green light Coordinate is basically unchanged.Similarly, because the blue light spectrum curve B1 before and after fluorescent material aging to B2 waveform is similar, pass through The driving current that first light source 112 is adjusted in the 3rd period T3 is (i.e. blue to supplement the 4th color of light Light), the blue light spectrum curve B1 of the blue light spectrum curve after regulation and standard curve can be caused to essentially coincide, and before and after regulation The chromaticity coordinates of blue light be basically unchanged.
Specifically, as shown in figure 1, the light-emitting device 100 can include detection adjusting means 130.The detection regulation Device 130 includes detection means 132, adjusting means 134 and light source control portion 136.The detection means 132 detects described luminous The intrinsic brilliance for the 3rd color of light that second sectional area 124 of device 100 is sent, and second segment identifier that will be detected There is provided in the intrinsic brilliance for the 3rd color of light that domain 124 is sent and arrive the adjusting means 134.The adjusting means 134 will obtain The 3rd color of light the intrinsic brilliance compared with the normal brightness of the 3rd predetermined color of light, and in two to compare The light source control portion 136 is controlled to adjust the driving current of first light source 112 when person is unequal, to cause described second point The intrinsic brilliance for the 3rd color of light that section region 124 is sent is consistent with the normal brightness of the 3rd color of light.
Preferably, the detection means 132 detect that the second sectional area 124 of the light-emitting device 100 is sent the 3rd The intrinsic brilliance of color of light, and the intrinsic brilliance for the 3rd color of light that second sectional area 124 detected is sent carries It is supplied to the adjusting means 134.The adjusting means 134 is by the intrinsic brilliance of the 3rd color of light of acquisition and predetermined the The normal brightness of three color of light compares, and controls the light source control portion 136 to adjust institute when the two to compare is unequal The driving current (driving current of the first light source 112 as described in increase) of the first light source 112 is stated, to cause second segment identifier The intrinsic brilliance for the 3rd color of light that domain 124 is sent is consistent with the normal brightness of the 3rd color of light.
It is appreciated that the normal brightness of the 3rd predetermined color of light can be pre-stored within a memory cell, (figure is not Show) in, the adjusting means 134 can be transferred from the memory cell normal brightness of the 3rd predetermined color of light with Just it is compared.The normal brightness of the 3rd predetermined color of light can be the light-emitting device 100 under an original state Second sectional area 124 (before the fluorescent material aging of the second sectional area 124 as described in, can specifically be set to light-emitting device 100 Before dispatching from the factory) normal brightness of the 3rd color of light that sends.
Further, the detection means 132 can also detect the 3rd sectional area 126 of the light-emitting device 100 and send out The intrinsic brilliance of the 4th color of light gone out, and the reality for the 4th color of light that the 3rd sectional area 126 detected is sent Border brightness provides and arrives the adjusting means 134.The adjusting means 134 is by the intrinsic brilliance of the 4th color of light of acquisition Compared with the normal brightness of the 4th predetermined color of light, and the light source control portion is controlled when the two to compare is unequal The driving current of 136 regulation first light sources 112, to cause the 4th color of light that the 3rd sectional area 126 sends Intrinsic brilliance is consistent with the normal brightness of the 4th color of light.
Preferably, the detection means 132 detect that the 3rd sectional area 126 of the light-emitting device 100 is sent the 4th The intrinsic brilliance of color of light, and the intrinsic brilliance for the 4th color of light that the 3rd sectional area 126 detected is sent carries It is supplied to the adjusting means 134.The adjusting means 134 is by the intrinsic brilliance of the 4th color of light of acquisition respectively with making a reservation for The normal brightness of the 3rd color of light compare, and control the light source control portion 136 to adjust when the two to compare is unequal The driving current (driving current of the first light source 112 as described in increase) of first light source 112 is saved, to cause described 3rd point The intrinsic brilliance for the 4th color of light that section region 126 is sent is consistent with the normal brightness of the 4th color of light.
It is appreciated that the normal brightness of the 4th predetermined color of light can be pre-stored within a memory cell, institute The normal brightness of the 4th predetermined color of light can be transferred to be compared from the memory cell by stating adjusting means 134 Compared with.The normal brightness of the 4th predetermined color of light can be the 3rd segmentation of the light-emitting device 100 under an original state Region (as the 3rd sectional area fluorescent material aging before, can specifically be set to before light-emitting device 100 dispatches from the factory) send The normal brightness of 4th color of light.
But if the first color of light that sends of the Wavelength converter 120 with the second color of light because fluorescent material is old Change and tail off, the Huang after aging, red-light spectrum curve Ye2, R2 as shown by the solid line, due to the Wavelength converter 120 First sectional area 122 includes the first color fluorescence material and the second color fluorescence material (i.e. red fluorescence material With yellow fluorescent material), the first color fluorescence material and the second color fluorescence material chronological aging degree are not Together, Huang, red-light spectrum curve and mark after can not being adjusted by adjusting the driving current of first light source 112 merely Huang, red-light spectrum curve Ye1, R1 of directrix curve are overlapped simultaneously.Therefore, the driving current of the first light source 112 is increased merely, although The brightness of the first color of light caused by Wavelength converter 120 can be increased, but can not be by caused by Wavelength converter 120 The chromaticity coordinates of first color of light is adjusted to the chromaticity coordinates value before fluorescent material aging.
The first color of light that the light-emitting device 100 is sent first color of light and as caused by Wavelength converter 120 The first color light compositing that two light sources 114 are sent, in of the invention, the chromaticity coordinates for the first color of light that secondary light source 114 is launched is not Change with the change of the luminosity (i.e. the brightness of the first color of light of its transmitting) of secondary light source.
In order that the brightness for the first color of light that light-emitting device 100 is sent and chromaticity coordinates reach the shape before fluorescent material aging State, on the basis of the driving current of first light source 112 is adjusted, it is also necessary to further adjust the secondary light source 114 Driving current.
Specifically, the detection means 132 detects the actual color coordinate for the first color of light that the light-emitting device 100 is sent One or both of with intrinsic brilliance, and by one kind in the actual color coordinate and intrinsic brilliance that detect the first color of light or The adjusting means 134 is arrived in two kinds of offers.The adjusting means 134 by the actual color coordinate of the first color of light of acquisition and One or both of one or both of intrinsic brilliance and the reference color coordinate of the first predetermined color of light and normal brightness Compare, and the driving for controlling the light source control portion 136 to adjust first light source 112 when the two to compare is unequal Driving current (as described in the increase driving current of the first light source 112 and the secondary light source of electric current and the secondary light source 114 114 driving current, or increase the driving current of first light source 112 and reduce the driving current of the secondary light source 114 Deng), to cause the actual color coordinate and intrinsic brilliance and first color of the first color of light that the light-emitting device 100 sends The reference color coordinate of light is consistent with normal brightness.Wherein it is possible to understand, as it was previously stated, in present embodiment, the light-emitting device The first color of light that 100 the first color of light sent include the secondary light source 114 transmitting is produced with the Wavelength converter 120 The first raw color of light, and the first color of light caused by the Wavelength converter 120 includes the first color fluorescence material The first color of light in second color of light caused by caused first color of light and the second color fluorescence material.
Preferably, in present embodiment, the detection means 132 detects the first color that the light-emitting device 100 is sent The actual color coordinate and intrinsic brilliance of light, and the actual color coordinate of first color of light detected and intrinsic brilliance are provided To the adjusting means 134.The adjusting means 134 is by the actual color coordinate and intrinsic brilliance of the first color of light of acquisition Respectively compared with the reference color coordinate of the first predetermined color of light and normal brightness, and the two to compare at any one is not The light source control portion 136 is controlled to adjust the driving current of first light source 112 and the drive of the secondary light source 114 when equal Streaming current, with cause the actual color coordinate of the first color of light that the light-emitting device 100 sends and intrinsic brilliance respectively with it is described The reference color coordinate of first color of light is consistent with normal brightness.
It is appreciated that the reference color coordinate and normal brightness of the first predetermined color of light can be pre-stored within one and deposit In storage unit, the adjusting means 134 can transfer the reference colour of the first predetermined color of light from the memory cell Coordinate and normal brightness are to be compared.The reference color coordinate and normal brightness of the first predetermined color of light can be one (fluorescent material such as first sectional area 122 is old for the first sectional area 122 of the light-emitting device 100 under original state Before change, can specifically be set to before light-emitting device dispatches from the factory) reference color coordinate and normal brightness of the first color of light that send.
Further, when being located at the original state, the brightness of the first color of light caused by the Wavelength converter 120 Be (x1, y1) for Y1, chromaticity coordinates, the brightness of the first color of light that the secondary light source 114 is launched is Y2, chromaticity coordinates for (x2, Y2), when the two above-mentioned to compare is unequal, the driving current that the light source control portion 136 adjusts the first light source 112 causes The brightness of first color of light caused by Wavelength converter 120 is Y1 ', if now the first face caused by Wavelength converter 120 The chromaticity coordinates of coloured light is (x1 ', y1 '), and the adjusting means 134 also controls the light source control portion 136 to adjust described second The driving current of light source 114 make it that the brightness of the first color of light of the transmitting of secondary light source 114 is Y2 ', and second light The chromaticity coordinates for the first color of light that source 114 is launched remains as (x2, y2).To ensure that the actual color of the first color of light after adjusting is sat Mark and intrinsic brilliance are consistent with the reference color coordinate and normal brightness of first color of light respectively, above-mentioned each parameter Y1, Y2, X1, y1, x2, y2, Y1 ', Y2 ', x1 ', y1 ' meet following three formula：
Y1+Y2=Y1 '+Y2 '；
(Y1 × x1/y1+Y2 × x2/y2)/(Y1/y1+Y2/y2)=(Y1 ' × x1 '/y1 '+Y2 ' × x2/y2)/(Y1 '/ y1+Y2’/y2)；And
(Y1+Y2)/(Y1/y1+Y2/y2)=(Y1 '+Y2 ')/(Y1 '/y1+Y2 '/y2).
Wherein, although the first color fluorescence material and the second color fluorescence material can little by little aging, it is in equal intensities First color of light caused by under the irradiation of exciting light can gradually tail off, because the degree of both agings is inconsistent, therefore the two The chromaticity coordinates of the mixed light of caused first color of light can also change, but this is a longer process.Shorter A period of time in, the amount for the first color of light that detection means detects is constant.It is believed that the first color fluorescence material A stable state is within the short period with the second color fluorescence material, the mixing of the first color of light caused by the two The chromaticity coordinates of light does not produce change yet, even if the intensity of exciting light changes.Although that is, the wavelength convert fills The chromaticity coordinates of the first color of light caused by 120 is put relative to being changed before fluorescent material aging, and in the first light source 112 Before and after drive current adjustment in this short period, the chromaticity coordinates of first color of light is caused by the Wavelength converter 120 Constant.Therefore, the chromaticity coordinates (x1 ', y1 ') of the first above-mentioned color of light can be measured by detection means 132 and obtained.Go forward side by side The chromaticity coordinates (x1 ', y1 ') and above-mentioned formula that one step obtains according to measurement calculate Y1 ' and Y2 '.
Further, the detection means 132 can be the detection means such as spectrometer.But implement in one kind change In mode, the light-emitting device 100 can not also include the detection means, also just say, can pass through peripherals detector pair The first color of light, the 3rd color of light and the 4th color of light that the light-emitting device 100 is sent carry out intrinsic brilliance and actual color is sat Target detects, but the light-emitting device can include input unit, can be detected the peripheral hardware by the input unit The first color of light, the 3rd color of light and the 4th color of light that device detects, which provide, arrives the adjusting means 132, so as to the tune Regulating device 132 such as is compared and adjusted at the step.
Compared to prior art, light-emitting device 100 of the present invention is by adjusting the driving current of first light source and described The driving current of secondary light source 114 is to cause the actual color coordinate and reality of the first color of light that the light-emitting device 100 is sent Brightness is consistent with the reference color coordinate and normal brightness etc. respectively, can be effectively improved caused by colour cast and luminance shortage and put down in vain Weigh bad phenomenon, improves and uses the Projection Display effect of light-emitting device 100.Especially for the use secondary light source 114 carry out the light-emitting device 100 of light fillings, and the setting of the secondary light source 114 can be reduced caused by certain color of light accounting deficiency The bad phenomenon of display effect.
The light-emitting device of second embodiment
Referring to Fig. 6, Fig. 6 is the structural representation of the second embodiment of light-emitting device 200 of the present invention.The light-emitting device 200 is essentially identical with the structure of the light-emitting device 100 of first embodiment, that is to say, that above-mentioned to be directed to the light-emitting device 100 Description substantially can apply to the light-emitting device 200, just repeat no more herein, the light-emitting device 200 and first is real The difference for applying the light-emitting device 100 of mode essentially consists in：The secondary light source 214 of the light-emitting device 200 is set with the first light source 212 The not homonymy of Wavelength converter 220 is placed in, specifically, exciting light caused by first light source 212 turns via the wavelength There is provided again after the Multiplexing apparatus 242 carries out closing light with the caused compensation light of the secondary light source 214 again after changing device 220 Follow-up even light and light relay system 250.
The light-emitting device of 3rd embodiment
Referring to Fig. 7, Fig. 7 is the structural representation of the embodiment of light-emitting device 300 the 3rd of the present invention.The light-emitting device 300 is essentially identical with the structure of the light-emitting device 100 of first embodiment, that is to say, that above-mentioned to be directed to the light-emitting device 300 Description substantially can apply to the light-emitting device 300, just repeat no more herein, the light-emitting device 300 and first is real The difference for applying the light-emitting device 100 of mode essentially consists in：The Wavelength converter is reflective Wavelength converter, specifically Ground, the light that first light source 312 is sent are provided to the Wavelength converter 320 after being reflected via a reflection unit 360.Institute The light and compensation light caused by the secondary light source 314 for stating the injection of Wavelength converter 320 are closed through the Multiplexing apparatus 340 Follow-up even light and light relay system 350 are provided again after light.
The light-emitting device of 4th embodiment
Referring to Fig. 8, Fig. 8 is the structural representation of the embodiment of light-emitting device 400 the 4th of the present invention.The light-emitting device 400 is essentially identical with the structure of the light-emitting device 300 of the 3rd embodiment, that is to say, that above-mentioned to be directed to the light-emitting device 300 Description substantially can apply to the light-emitting device 400, just repeat no more herein, the light-emitting device 200 and the 3rd is real The difference for applying the light-emitting device 300 of mode essentially consists in：The light source assembly 410 also includes the 3rd light source 416, the 3rd light Source 416 is also compensatory light, and light is compensated for producing.Specifically, in present embodiment, the 3rd light source 416 is mended for blue light Light source is repaid, sends blue light.
Exciting light caused by first light source 412 is provided to the wavelength convert after being reflected via reflection unit 460 and filled Put 420.Mended caused by the light that the Wavelength converter 420 projects and the secondary light source 414 and the 3rd light source 416 Repay light and provide follow-up even light and light relay system 450 again after the Multiplexing apparatus 440 carries out closing light.
Specifically, the output light of the Wavelength converter 420 of the light-emitting device 400 and secondary light source 412 and Fig. 3 and figure The Wavelength converter 120 of first embodiment shown in 4 and the output light sequential of secondary light source 112 are essentially identical, herein Repeat no more.And the light-source system of the 3rd light source 416 is referring to Fig. 9, the 3rd light source 416 is sent out in the 3rd period T3 Go out blue light, for being compensated to blue light.
The optical projection system of first embodiment
Referring to Fig. 10, Figure 10 is the block diagram of the first embodiment of optical projection system 50 of the present invention.The projection system System 50 includes light-emitting device 51, light valve 52, control device 53, projection lens 54 and projection screen 55.The light-emitting device 51 is used In offer light to the light valve 52.The light valve 52 can be but be not limited to DMD/LCD/LCOS spatial light modulators.
The control device 53 is used to receive input image data and controls the light valve 52 to carry out image modulation.The light Valve 52 is used to receive the light that the light-emitting device is sent and carries out image modulation according to predetermined image data to be emitted modulation image Light.The projection lens 54 receives the modulation image light to show predetermined image on the projection screen 55.It is described Light-emitting device 51 can use the above-mentioned any one embodiment of first to fourth embodiment light-emitting device 100,200,300, 400。
The optical projection system of second embodiment
Figure 11 is referred to, Figure 11 is the block diagram of the second embodiment of optical projection system 60 of the present invention.The projection system System 60 and the main distinction of the optical projection system 50 of first embodiment are：The detection means 632 for detecting adjusting means 630 is neighbouring One of them setting of light valve 62, projection lens 64 or projection screen 65.The detection means 632 is penetrated for detecting the light valve 62 The first color of light in the predetermined image of modulation image light or the projection lens 64 and projection screen 65 display gone out One or both of actual color coordinate and intrinsic brilliance, and by the light valve 62 of acquisition is sending or the predetermined image In first color of light mark with the first predetermined color of light of actual color coordinate and one or both of intrinsic brilliance One or both of quasi- chromaticity coordinates and normal brightness compare, and control the light source control when the two to compare is unequal Portion 636 processed adjusts the driving current of first light source 612 and the driving current of the secondary light source 614, to cause the light The first face in the predetermined image that the modulation image light or the projection lens 64 and projection screen 65 that valve 62 projects are shown The actual color coordinate and intrinsic brilliance of coloured light are consistent with the reference color coordinate and normal brightness of first color of light.
Preferably, in present embodiment, the detection means 632 detect the modulation image light that the light valve 62 projects or The actual color coordinate and reality of the first color of light in the predetermined image that projection lens 64 described in person and projection screen 65 are shown are bright Degree, and provide the actual color coordinate of first color of light detected and intrinsic brilliance to the adjusting means 65.It is described Adjusting means 634 by the actual color coordinate and intrinsic brilliance of the first color of light of acquisition respectively with the first predetermined color of light Reference color coordinate compared with normal brightness, and control the light source control when the two to compare at any one is unequal Portion 636 adjusts the driving current of first light source 612 and the driving current of the secondary light source 614, to cause the light valve The first color in the predetermined image that the 62 modulation image light projected or the projection lens 64 and projection screen 65 are shown The actual color coordinate and intrinsic brilliance of light are consistent with the reference color coordinate and normal brightness of first color of light respectively.
Specifically, as shown in Figures 3 and 4, the Wavelength converter 620 the first period T1 project the first color of light with Second color of light, the 3rd color of light then is projected in the second period T2, and the 4th color of light is projected in the 3rd period T3.The light Valve receives the first color of light and the second color of light and the predetermined figure of foundation first that the light-emitting device 600 is sent in the first period T1 As data carry out image modulation to be emitted the first modulation image light, then the light valve receives described luminous in the second period T2 The 3rd color of light and the second predetermined image data of foundation that device 600 is sent carry out image modulation to be emitted the second modulation image light Line, and the light valve receive the 4th color of light and the predetermined figure of foundation the 3rd that the light-emitting device 600 is sent in the 3rd period T3 As data carry out image modulation to be emitted the 3rd modulation image light.The projection lens 64 receives described first, second and Three modulation image light on the projection screen 65 to show predetermined image.
It is appreciated that the first predetermined image data, the second predetermined image data, the 3rd predetermined image data can be Test image data, the test image data can be view data corresponding to solid color image, such as red test image Data, green test image data or blue test image data, the corresponding predetermined image can be red test image, Green test image or blue test image.
The reference color coordinate and normal brightness of the first predetermined color of light can be pre-stored within a memory cell, The adjusting means 634 can transfer the reference color coordinate and standard of the first predetermined color of light from the memory cell Brightness is to be compared.The reference color coordinate and normal brightness of the first predetermined color of light can be under an original state (as the Wavelength converter fluorescent material aging before, can specifically be set to before optical projection system dispatches from the factory) light valve 62 projects Modulation image light or the first color of light in the predetermined image that shows of the projection lens 64 and projection screen 65 mark Quasi- chromaticity coordinates and normal brightness.
Further, the detection means 632 can be the detection means such as spectrometer.But implement in one kind change In mode, the optical projection system 60 can not also include the detection means 632, also just say, can pass through peripherals detector In the predetermined image that the modulation image light or the projection lens 64 and projection screen 65 projected to the light valve 62 is shown The first color of light actual color coordinate and one or both of intrinsic brilliance detected, but the optical projection system 60 can , can be by the first color of light that the peripherals detector detects, the 3rd by the input unit with including input unit Color of light and the 4th color of light provide and arrive the adjusting means 634, are walked so that the adjusting means 634 is compared and adjusted etc. Suddenly.
Additionally, it is appreciated that in embodiment is changed, the first light source 612, the secondary light source of the light-emitting device 600 614th, the position such as Wavelength converter 620 and light path design may be referred to the hair of second, third and the 4th embodiment of the application Each position of components and light path design in electro-optical device 100.
Compared to prior art, optical projection system 60 of the present invention is by adjusting driving current and the institute of first light source 612 The driving current of secondary light source 614 is stated to cause the first color of light in the modulation image light or the predetermined image One or both of actual color coordinate and intrinsic brilliance and one or both of the reference color coordinate and normal brightness one Cause, the bad phenomenon of white balance caused by colour cast or luminance shortage can be effectively improved, improve Projection Display effect.Particularly pair Attract in the light-emitting device 600 and projection that light filling is carried out using the secondary light source 614, the setting of the secondary light source 614 can The bad phenomenon of display effect caused by reducing certain color of light accounting deficiency.
It is understood that those skilled in the art can also do other changes etc. in spirit of the invention is used in the present invention's Design, without departing from the technique effect of the present invention.These changes done according to present invention spirit, it should all be included in Within scope of the present invention.

Claims (11)

1. a kind of light-emitting device, it is characterised in that the light-emitting device includes：
First light source；
Wavelength converter, it includes at least the first sectional area, and first sectional area carries the first color fluorescence material With the mixture of the second color fluorescence material, the first color fluorescence material is excited by the light of first light source and produces One color of light, the second color fluorescence material are excited by the light of first light source and produce the second color of light, and described second Color of light can isolate the first color of light and another color of light；
Secondary light source, for launching the first color of light, the first color of light of the secondary light source transmitting is used to turn with the wavelength First color of light caused by changing device carries out closing light and forms the first color of light that the light-emitting device is sent, the wavelength convert First color of light caused by device includes the first color of light caused by the first color fluorescence material and second color The first color of light in second color of light caused by fluorescent material；
Adjusting means, one in the actual color coordinate and intrinsic brilliance of the first color of light sent for obtaining the light-emitting device Kind or two kinds, and by one or both of the actual color coordinate of first color of light of acquisition and intrinsic brilliance with it is predetermined One or both of the reference color coordinate of first color of light and normal brightness compare；And
Light source control portion, for adjusting the driving current and described second of first light source when the two to compare is unequal The driving current of light source, with cause the actual color coordinate of the first color of light that the light-emitting device sends and intrinsic brilliance with it is described The reference color coordinate of first color of light is consistent with normal brightness.
2. light-emitting device according to claim 1, it is characterised in that the light-emitting device also includes detection means, described One kind that detection means is used to detect in the actual color coordinate and intrinsic brilliance of the first color of light that the light-emitting device is sent or Two kinds, and the actual color coordinate of the first color of light detected and intrinsic brilliance are supplied to the adjusting means.
3. light-emitting device according to claim 1, it is characterised in that described when the two to compare is unequal The driving current that light source control portion adjusts the first light source make it that the brightness of the first color of light caused by Wavelength converter is Y1 ', If now the chromaticity coordinates of the first color of light caused by Wavelength converter is (x1 ', y1 '), and the adjusting means also controls institute The brightness for the first color of light that the driving current for stating the light source control portion regulation secondary light source causes the secondary light source to launch For Y2 '；
Above-mentioned each parameter Y1 ', Y2 ', x1 ', y1 ' meet below equation：
Y1+Y2=Y1 '+Y2 '；
(Y1×x1/y1+Y2×x2/y2)/(Y1/y1+Y2/y2)
=(Y1 ' × x1 '/y1 '+Y2 ' × x2/y2)/(Y1 '/y1+Y2 '/y2)；
(Y1+Y2)/(Y1/y1+Y2/y2)=(Y1 '+Y2 ')/(Y1 '/y1+Y2 '/y2)；
Wherein：The first color of light that the light-emitting device is sent under one original state reaches the reference color coordinate and the standard During brightness, the brightness of the first color of light caused by the Wavelength converter is expressed as Y1, chromaticity coordinates is expressed as (x1, y1), institute The brightness for stating the first color of light of secondary light source transmitting is expressed as Y2, chromaticity coordinates is expressed as (x2, y2).
4. light-emitting device according to claim 3, it is characterised in that the original state be the first color fluorescence material and The state of aging does not occur for the second fluorescent material.
5. light-emitting device according to claim 1, it is characterised in that the Wavelength converter also includes the second segment identifier Domain, second sectional area carry the 3rd color fluorescence material, and the 3rd color fluorescence material is by first light source Light excites and produces the 3rd color of light；
The adjusting means is additionally operable to obtain the intrinsic brilliance for the 3rd color of light that second sectional area is sent, and will obtain The 3rd color of light the intrinsic brilliance compared with the normal brightness of the 3rd predetermined color of light, the light source control portion The driving current of first light source is adjusted when the two to compare is unequal, is sent with to cause second sectional area The intrinsic brilliance of 3rd color of light is consistent with the normal brightness of the 3rd color of light.
6. light-emitting device according to claim 5, it is characterised in that the first color fluorescence material is red fluorescence material Material, the second color fluorescence material is yellow fluorescent material, and the 3rd color fluorescence material is green fluorescent material, described First color of light is red light, and second color of light is sodium yellow, and the 3rd color of light is green light, second color Light can isolate red light and green light.
7. light-emitting device according to claim 1, it is characterised in that the Wavelength converter also includes the 3rd segment identifier Domain, first light source send the 4th color of light, and the 3rd sectional area is carried out to the 4th color of light of first light source Transmission scatters and projects the 4th color of light；The adjusting means is additionally operable to obtain the 4th face that the 3rd sectional area is sent The intrinsic brilliance of coloured light, and the normal brightness by the intrinsic brilliance of the 4th color of light of acquisition and the 4th predetermined color of light Compare, the light source control portion adjusts the driving current of first light source when the two to compare is unequal, to cause The intrinsic brilliance for the 4th color of light that 3rd sectional area is sent is consistent with the normal brightness of the 4th color of light.
8. light-emitting device according to claim 1, it is characterised in that the Wavelength converter also includes the 3rd segment identifier Domain, the 3rd sectional area carry the 4th color fluorescence material, and first light source sends ultraviolet light, and the 4th color is glimmering Luminescent material is excited by the light of first light source and produces the 4th color of light；The adjusting means is additionally operable to obtain described 3rd point In the intrinsic brilliance of the 4th color of light that section region is sent, and by the intrinsic brilliance of the 4th color of light of acquisition with predetermined the The normal brightness of four color of light compares, and the light source control portion adjusts first light source when the two to compare is unequal Driving current, to cause the intrinsic brilliance of the 4th color of light that the 3rd sectional area sends and the 4th color of light Normal brightness is consistent.
9. the light-emitting device according to claim 7 or 8, it is characterised in that the 4th color of light is blue light.
10. a kind of optical projection system, it includes light-emitting device, it is characterised in that：The light-emitting device is appointed using claim 1-9 items Optical projection system described in meaning one.
11. a kind of optical projection system, it includes：
Light-emitting device, including：
First light source；
Wavelength converter, it includes at least the first sectional area, and first sectional area carries the first color fluorescence material With the mixture of the second color fluorescence material, the first color fluorescence material is excited by the light of first light source and produces One color of light, the second color fluorescence material are excited by the light of first light source and produce the second color of light, and described second Color of light can isolate the first color of light and another color of light；
Secondary light source, for launching the first color of light, the first color of light of the secondary light source transmitting is used to turn with the wavelength First color of light caused by changing device carries out closing light and forms the first color of light that the light-emitting device is sent, the wavelength convert First color of light caused by device includes the first color of light caused by the first color fluorescence material and second color The first color of light in second color of light caused by fluorescent material；
Light valve, for receiving the first color of light that the light-emitting device sends with the second color of light and entering according to predetermined image data Row image modulation is to be emitted modulation image light；
Projection lens, the modulation image light is received to show predetermined image；
Adjusting means, the actual color for obtaining the first color of light in the modulation image light or the predetermined image are sat Mark and one or both of intrinsic brilliance, and the light valve of acquisition is sent or described the in the predetermined image The reference color coordinate of one or both of actual color coordinate and intrinsic brilliance of one color of light and the first predetermined color of light and One or both of normal brightness compares；And
Light source control portion is used for the driving current and described second that first light source is adjusted when the two to compare is unequal The driving current of light source, with cause the actual color coordinate of the first color of light that the light-emitting device sends and intrinsic brilliance with it is described The reference color coordinate of first color of light is consistent with normal brightness.
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