CN104683775B - Blue light synthetic method and system - Google Patents
Blue light synthetic method and system Download PDFInfo
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- CN104683775B CN104683775B CN201310625063.1A CN201310625063A CN104683775B CN 104683775 B CN104683775 B CN 104683775B CN 201310625063 A CN201310625063 A CN 201310625063A CN 104683775 B CN104683775 B CN 104683775B
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Abstract
The invention discloses a kind of blue light synthetic method and system, described blue light synthetic method comprises the following steps：One blue laser is provided；Blue laser light path configure a Wavelength changing element, the blue laser excitation wavelength conversion element of part and send the blue light once modulation wavelength；The blue light of the blue laser of non-modulated wavelength and modulated wavelength is carried out mixed light.The present invention can produce the blue-light source meeting Rec.709 specification, meet IEC 60,825 1 laser product standard security specification simultaneously.
Description
Technical field
The present invention relates to a kind of light compositing method and system, particularly to a kind of blue light synthetic method and system.
Background technology
It is red bluish-green that projector produces color picture needs（RGB）The mutual blend proportion of three primary colories it is however generally that, can be by white
Estimating the component ratio needed for each color, wherein, the ratio of blue light is for white balance chromaticity coordinates position and colour temperature for EQUILIBRIUM CALCULATION FOR PROCESS
Point impact is very huge.If with red, green, blue three blended-light discussion it is only necessary to blue light ratio within about 10%, you can reach typically conventional
White balance specification, remaining 90% ratio is then mainly made up of with green glow HONGGUANG.Therefore, change an angle to say, blue light ingredient
How much, determine the brightness of the white picture of projector.
Different from conventional bulb（Lamp）In conjunction with the blue-light source of filter or collocation blue-ray LED, laser-projector is general
It is blue laser to be used as main blue-light source.If however, using above-mentioned blue laser as the blue-light source of projector, entirely
The colour gamut that projector can show cannot cover the standard color gamut of Rec.709 and reduce colorfulness.Furthermore, due to blue light
The composition in source is based on blue laser, and with the lifting of product specification, the wattage of laser is consequently increased, the product of high brightness
Remaining laser will certainly be faced excessive, and the problem of laser product safety standard cannot be met.
Therefore, how a kind of blue light synthetic method and system are provided, using the blue light after synthesis as blue-light source, can make
The color that system shows covers the standard color gamut of Rec.709, and can meet the safety standard of laser product and become important class
One of topic.
Content of the invention
For problems of the prior art, the purpose of the present invention is simultaneously same for providing one kind to may conform to Rec.709 specification
The blue light synthetic method of blue-light source of Shi Fuhe IEC-60825-1 laser product standard security specification and system.
For reaching above-mentioned purpose, according to a kind of blue light synthetic method of the present invention, it comprises the following steps：A blue light is provided to swash
Light；Blue laser light path configure a Wavelength changing element, the blue laser excitation wavelength conversion element of part and send
Blue light once modulation wavelength；The blue light of the blue laser of non-modulated wavelength and modulated wavelength is carried out mixed light.
In one embodiment, also include a step before carrying out mixed light step：The blue laser of non-modulated wavelength is carried out
Strength retrogression or partial filtration.
In one embodiment, Wavelength changing element has a transparent area.Material for transformation of wave length is configured at beyond transparent area
Region.
In one embodiment, blue laser part pass through transparent area, through material for transformation of wave length modulation wavelength be partly through
The blue light of modulation wavelength.
In one embodiment, Wavelength changing element includes color wheel.
In one embodiment, material for transformation of wave length includes fluorescent material, phosphor material or a combination thereof.
In one embodiment, fluorescent material includes silicon oxide compound.
In one embodiment, the wavelength of blue laser is 445nm to 448nm, and the main of the blue light of this modulated wavelength is sent out
A length of 460nm ± the 5nm of light wave.
For reaching above-mentioned purpose, according to a kind of blue light synthesis system of the present invention, it includes：One luminous source, a wavelength convert
Element and an optical element group.Luminous source is in order to provide a blue laser.Wavelength changing element is configured at the one of blue laser
Light path.Optical element group constitutes light path.Partial blue laser excitation wavelength conversion element and send once modulation wavelength
Blue light.The blue light of the blue laser of non-modulated wavelength and modulated wavelength is carried out mixed light.
In one embodiment, optical element group includes an optical filter, in order to filter blue laser, and the indigo plant of modulated wavelength
Light penetrates optical filter.
In one embodiment, optical element group includes an attenuator, in order to blue laser of decaying, and the indigo plant of modulated wavelength
Light penetrates attenuator.
In one embodiment, optical element group includes a spectroscope, in order to reflect blue laser, and the indigo plant of modulated wavelength
Light penetrates spectroscope.
In one embodiment, Wavelength changing element has a transparent area.Material for transformation of wave length is configured at beyond transparent area
Region.
In one embodiment, blue laser part pass through transparent area, through material for transformation of wave length modulation wavelength be partly through
The blue light of modulation wavelength.
In one embodiment, Wavelength changing element includes color wheel.
In one embodiment, material for transformation of wave length includes fluorescent material, phosphor material or a combination thereof.
In one embodiment, fluorescent material includes silicon oxide compound.
In one embodiment, the wavelength of blue laser is 445nm to 448nm.Mainly the lighting of the blue light of modulated wavelength
Wavelength is 460nm ± 5nm.
The beneficial effects of the present invention is, in sum, the blue light synthetic method of the present invention and system, by some blue light
Laser excitation goes out the blue light of modulated wavelength, and the blue light of some blue light laser and modulated wavelength is carried out mixed light, to produce
Meet the blue-light source of Rec.709 specification, meet IEC-60825-1 laser product standard security specification simultaneously.
Brief description
Fig. 1 is a kind of flow chart of steps of blue light synthetic method of present pre-ferred embodiments.
Fig. 2 is fluorescence spectrum figure.
Fig. 3 A and Fig. 3 B is the schematic diagram of Wavelength changing element.
Fig. 4 A is blue laser spectrogram.
Fig. 4 B is the spectrogram of blue laser, attenuator and optical filter.
Fig. 4 C is mixed light blue light spectrogram.
Fig. 5 is a kind of schematic diagram of blue light synthesis system of present pre-ferred embodiments.
Fig. 6 is the schematic diagram of another kind of blue light synthesis system of present pre-ferred embodiments.
Wherein, description of reference numerals is as follows：
1、2：Blue light synthesis system
11、21：Luminous source
12、22：Wavelength changing element
13、23：Optical element group
131、132：Lens
133：Optical filter/attenuator
14、24：Integration rod
231：Spectroscope
232：Reflecting mirror
A：Transparent area
L：Light path
L1：Path
L2：Path
S、R：Region
S102、S104、S105、S106：Step
Specific embodiment
Hereinafter with reference to relevant drawings, a kind of blue light synthetic method according to present pre-ferred embodiments and system are described, its
Middle identical element will be illustrated with identical reference marks.
Fig. 1 is a kind of flow chart of steps of blue light synthetic method of present pre-ferred embodiments.Refer to shown in Fig. 1, blue
Light compositing method comprises the following steps：One blue laser is provided（S102）；Configure a wavelength convert in the light path of blue laser
Element, the blue laser excitation wavelength conversion element of part and send the blue light once modulation wavelength（S104）；Will be non-modulated
The blue laser of wavelength carries out mixed light with the blue light of modulated wavelength（S106）.The blue light synthetic method of the present invention applicable but not
It is limited to illuminator, projector, display or other Optical devices, the present embodiment is taking laser-projector as a example.
The mode of blue laser, in step S102, is provided, can be by gas laser, solid state laser, optical fiber
The luminous source such as laser instrument or semiconductor laser provides, and the present invention is not restricted.In the present embodiment, due to blue laser except
Beyond excitation source, separately there is the purposes of mixed light.In the blue laser that laser instrument on the market is provided at present, its wavelength is big
How between 445nm～448nm, and in order to reduce the cost of mixed light, the therefore blue laser selected by the present embodiment, its ripple
Length is between 445nm～448nm.Consequently, it is possible to without the special laser instrument providing specific wavelength, therefore can be able to reduce into
This.Certainly, the present invention does not limit the wave-length coverage of its blue laser, with the mixed light blue light required for can mixing out for mainly examining
Consider.
In step S104, configure a Wavelength changing element in the light path of blue laser, the blue laser of part excites
Wavelength changing element and send the blue light once modulation wavelength.Wavelength changing element has material for transformation of wave length, preferably of the same colour
Wheel.In the present embodiment, when blue laser directive Wavelength changing element and when beating on material for transformation of wave length, wavelength convert material
Material can be inspired light.And in the present embodiment, material for transformation of wave length inspired just based on blue light, its primary waves is a length of
460nm ± 5nm, can be according to the corresponding material from different wave length of the modulation demand of different wave length.On the implementation, when using wavelength
During blue laser for 445nm, in order to effectively reduce the residual volume of blue laser（More can meet laser product safety standard）
Can the use of wavelength be then the material for transformation of wave length of 460nm.In this, use green emitting phosphor compared to prior art（Dominant wavelength
About in 550nm）Or hanced cyan fluorescent powder（Dominant wavelength is about in 490nm）Carry out mixed light, the Wavelength changing element that the present embodiment uses（Main
Wavelength 460nm ± 5nm）Blue laser demand can effectively be reduced.
In addition, transition material can be fluorescent material, phosphor material or a combination thereof.In the present embodiment, can adopt glimmering
Luminescent material is realized, and its main component includes silicon oxide compound.And the fluorescent material of the present embodiment, a length of 460nm of its primary waves, its
The fluorescence spectrum figure inspiring is as shown in Figure 2.
In the present embodiment, Wavelength changing element can have a transparent area, and it can be a transparent entity is, for example, glass
Glass or a through hole, as long as translucent effect can be reached, this is not restricted.In other embodiments, wavelength convert
Material can be arranged in the region beyond above-mentioned transparent area.Refer to Fig. 3 A and Fig. 3 B, the wavelength of respectively the present embodiment turns
Change element 12 and the schematic diagram of Wavelength changing element 22, and taking colour wheel as a example.As shown in Figure 3A, in the area of Wavelength changing element 12
R configuration material for transformation of wave length in domain is so that blue laser（Region S is that the section of incident blue laser is illustrated）Penetrate wavelength convert
Although whole blue laser all can be beaten on material for transformation of wave length during the region R of element 12, but some of blue laser meeting
Excitation wavelength transition material produces the blue light after modulation, and some blue light laser then will not wavelength-converted material be absorbed, will
It is directed through outgoing material for transformation of wave length, and wavelength will not change.And Wavelength changing element 22 as shown in Figure 3 B, due to swashing
Light has directivity, namely the depth of parallelism of light beam is high, therefore works as blue laser（Region S is that the section of incident blue laser shows
Meaning）During the edge of directive transparent area A, the blue laser of part can penetrate transparent area A and appear, and do not penetrate the portion of transparent area A
Divide blue laser can beat on the region R have material for transformation of wave length and inspire light.In the present embodiment, the light being inspired
For blue light, preferably blue phosphor.
Fig. 4 A is blue laser spectrogram, refer to shown in Fig. 4 A.Because blue laser is in excitation wavelength conversion element
During, some blue light laser penetration transparent area, therefore penetrate transparent area and carry out the blue laser of mixed light, its energy having
Amount is low compared to the energy of complete blue laser, thus meeting IEC-60825-1 laser product standard security specification（Blue laser
Energy value, its wattage has different specification, for example, must be less than 5mW or 2mW according to practical application request）.And in section Example
In, the blue laser of non-modulated wavelength, still there is higher energy, and be unable to reach IEC-60825-1 laser product standard
Safety standard, therefore before carrying out mixed light step, can carry out strength retrogression or part to the blue laser of non-modulated wavelength
Filter, i.e. step S105.In the present embodiment, an optical filter is configured on the light path of blue laser, it is in order to filter part
Blue laser, for example filter 60% blue laser, and the wave-length coverage that can filter of optical filter be design 445nm～
Between 448nm.Consequently, it is possible to the optical filter of the present embodiment only can filter the blue laser of part, without filtering main wavelength
Blue phosphor for 460nm ± 5nm.It is noted that the optical filter of the present embodiment can also attenuator substitute.Similarly,
The wave-length coverage that attenuator can be decayed is to design between 445nm～448nm, with the blue laser of attenuation portions, for example, decays
60% blue laser, and the blue phosphor of a length of 460nm ± 5nm of primary waves that will not decay.In this, after filtering or decaying
Blue laser, the energy that it has is relatively low, and then meets IEC-60825-1 laser product standard security specification.Above-mentioned optical filter/
I.e. as shown in Figure 4 B, it is the spectrogram of blue laser, attenuator and optical filter, wherein filters for the design of the spectrogram of attenuator
The energy of unnecessary blue laser can be removed by piece/attenuator.
Subsequently enter step S106, the blue light of the blue laser of non-modulated wavelength and modulated wavelength is carried out mixed light.
As described above, the present embodiment is using some blue light laser as excitation source, by the material for transformation of wave length of Wavelength changing element
Inspire blue phosphor.And the blue laser of partial penetration transparent area then carries out mixed light with the blue phosphor inspiring, and will mix
Mixed light blue light after light is as the blue-light source of the present embodiment laser-projector.Due to the present embodiment be with wavelength as 445nm～
The blue laser of 448nm carries out mixed light with the blue phosphor of a length of 460nm ± 5nm of primary waves, and therefore above-mentioned mixed light blue light is
Meet the blue light of Rec.709 specification.Wherein mixed light blue light frequency spectrum as shown in Figure 4 C.
In gross, the present embodiment provides blue laser by laser instrument, and some blue light laser excitation is gone out blue light
Fluorescence, and not carry out mixed light as some blue light laser exciting and blue phosphor, the blue light after its mixed light is this reality
Apply the blue-light source of the laser-projector of example.Because the wavelength of blue laser and blue phosphor is between particular range, therefore logical
Cross the blue light that the mixed light blue light after above-mentioned blue light synthesis as meets Rec.709 specification.In addition, section Example passes through optical filter
Or the design of attenuator, with filter or attenuation portions blue laser, and then reduce blue laser energy, to meet IEC-
60825-1 laser product standard security specification.
Fig. 5 is a kind of schematic diagram of blue light synthesis system of present pre-ferred embodiments.Refer to Fig. 5, above-mentioned preferable reality
Apply the blue light synthetic method of example, can be by blue light synthesis system 1 fit applications of the present embodiment.In the present embodiment, blue light synthesis
System 1 includes a luminous source 11, a Wavelength changing element 12, an optical element group 13 and an integration rod（integrator
rod）14.Wherein, luminous source 11 and Wavelength changing element 12（Reference picture 3A）As described in above-described embodiment, repeat no more in this.
In the present embodiment, blue laser has light path L.Optical element group 13 constitutes light path L, and it comprises multiple
Mirror 131,132 and one optical filter/attenuator 133.Wherein, optical filter/attenuator 133 be configured at lens 131 and lens 132 it
Between, and luminous source 11 is configured at the opposite side that lens 131 are with respect to optical filter/attenuator 133, and Wavelength changing element 12 is then
It is configured between lens 131 and luminous source 11.In addition, the present embodiment inspires the blue light of modulated wavelength via blue laser,
Its path is represented with symbol L1, and taking blue phosphor as a example.Integration rod（integrator rod）14 receive the blue light after mixed light,
And the blue-light source as laser-projector.It is noted that the blue light due to modulated wavelength（Such as blue phosphor）
Not necessarily as laser has directivity, its form possibly dissipating, lighted with radial, therefore the present embodiment is with symbol L1
Represented path is that the path of the blue phosphor of part range is illustrated.
The present embodiment with Overall View it, after blue laser sends via luminous source 11, inject Wavelength changing element 12 with
Inspire blue phosphor.Then, as shown in the light path L of the blue laser and path L1 of blue phosphor, sequentially via lens
131st, assemble mixed light to integration rod after optical filter/attenuator 133 and lens 132（integrator rod）14.In this, this reality
Apply example blue laser inspire blue phosphor after, now the frequency spectrum of whole blue light synthesis system comprises wavelength 445～448nm's
Blue laser and the blue phosphor of main wavelength 460nm ± 5nm, then via optical filter/attenuator 133, blue laser is made
Partial filtration/decay.Consequently, it is possible to last mixed light blue light as meets the blue light of Rec.709 specification, and effectively reduce sharp
The energy of light and meet IEC-60825-1 laser product standard security specification.In other words, the present embodiment is to penetrate light path
Subtraction formula（minus approach）Blue light synthesis system is realized, and reduces excessive laser energy using optical filter/attenuator 133
Amount, blue laser and blue phosphor are mixed into mixed light blue light the blue-light source as laser-projector.
Fig. 6 is the schematic diagram of another kind of blue light synthesis system of present pre-ferred embodiments.Refer to Fig. 6, above-mentioned preferable
The blue light synthetic method of embodiment, also can be by blue light synthesis system 2 fit applications of the present embodiment.In the present embodiment, blue light
Synthesis system 2 includes a luminous source 21, Wavelength changing element 22, an optical element group 23 and an integration rod（integrator
rod）24.Wherein luminous source 21, Wavelength changing element 22（Reference picture 3B）And integration rod（integrator rod）24 chat
State and refer to above-described embodiment, therefore not to repeat here.
In the present embodiment, Wavelength changing element 22 is color wheel, and it has a transparent area.Please also refer to Fig. 3 B, its
For the schematic diagram of the Wavelength changing element of the present embodiment, and the visual angle figure for light path L incident direction.Transparent area A can be
One transparent entity is, for example, glass or a through hole, as long as translucent effect can be reached, this is not restricted.?
Region in the present embodiment, beyond transparent area A（Such as region R）Be configured with material for transformation of wave length, its be inspired just with
Based on blue light, and a length of 460nm ± 5nm of primary waves, wherein the present embodiment are to be with the blue phosphor of a length of 460nm of primary waves
Example.As shown in Figure 3 B, region S is the section signal of incident blue laser.When the edge of blue laser directive transparent area A,
Some blue light laser penetration transparent area A, and some blue light laser then inspires blue phosphor.In the present embodiment, blue phosphor
Path L1 the opposite direction of the original optical path footpath L2 with blue laser is sent.
Please continue to refer to Fig. 6.In the present embodiment, optical element group 23 includes a spectroscope 231 and multiple reflecting mirror
232, it is respectively arranged on the light path L of blue laser.Spectroscope 231 is to reflect blue laser, and modulated wavelength
Blue light（Such as blue phosphor）Spectroscope 231 can be penetrated.In details of the words, the design of the present embodiment spectroscope 231, is to be directed to
The light of 400nm～450nm frequency range is reflected, because the wavelength of blue laser is 445nm～448nm, and the master of blue phosphor
Wavelength is wanted to be 460nm ± 5nm, therefore spectroscope 231 can reflect blue laser, and blue phosphor can pass through spectroscope 231.
The present embodiment with Overall View it, when blue laser sends via luminous source 21 and during directive spectroscope 231, spectroscope
Blue laser is reflexed to Wavelength changing element 22 by 231.After blue laser injects Wavelength changing element 22, the blue light of part swashs
Light penetrates transparent area, and partial blue laser is beaten and inspired blue phosphor in material for transformation of wave length, wherein blue phosphor
Path L1 will be sent with the opposite direction of the original optical path footpath L2 of blue laser and penetrates spectroscope 231 to integration rod（integrator
rod）24.Meanwhile, penetrate some blue light laser of transparent area, as illustrated, sequentially through the triple reflection of three reflecting mirrors 232
Directive spectroscope 231 afterwards.Blue laser through reflection is reflexed to integration rod by spectroscope 231 again（integrator rod）
24, to be mixed into mixed light blue light.In this, after some blue light laser excitation of the present embodiment goes out blue phosphor, now whole blue light
The frequency spectrum of synthesis system comprises the blue laser of wavelength 445～448nm and the blue phosphor of main wavelength 460nm ± 5nm, and
Penetrate some blue light laser of transparent area via after multiple reflections to integration rod（integrator rod）24 to refill.Due to
The blue laser that its part of the blue laser of the present embodiment refills as excitation source, therefore partial penetration transparent area, its energy
Amount is relatively low.And the frequency spectrum of last mixed light blue light is i.e. as shown in Figure 4 C, for meeting the blue light of Rec.709 specification, and effectively drop
The energy of low laser and meet IEC-60825-1 laser product standard security specification.In other words, the present embodiment is with reflected light
The addition type on road（plus approach）Blue light synthesis system is realized, and is separated blue laser with blue phosphor using spectroscope
For different paths, the blue laser finally supplied again, blue laser and blue phosphor are mixed into mixed light blue light and as
The blue-light source of laser-projector.
In sum, the blue light synthetic method of the present invention and system, go out modulated wavelength by some blue light laser excitation
Blue light, and the blue light of some blue light laser and modulated wavelength is carried out mixed light, to produce the blueness meeting Rec.709 specification
Light source, meets IEC-60825-1 laser product standard security specification simultaneously.
The foregoing is only illustrative, rather than be restricted person.Any spirit and scope without departing from the present invention, and to it
The equivalent modifications carrying out or change, are intended to be limited solely by appended claim.
Claims (15)
1. a kind of blue light synthetic method, comprises the following steps：
One blue laser is provided；
Configure a Wavelength changing element in the light path of this blue laser, this blue laser of part excites this Wavelength changing element
And send the blue light once modulation wavelength；And
The blue light of the blue laser of non-modulated wavelength and this modulated wavelength is carried out mixed light；
Before wherein carrying out mixed light step, also include a step：Strength retrogression or portion are carried out to the blue laser of non-modulated wavelength
Divide and filter.
2. blue light synthetic method as claimed in claim 1, wherein this Wavelength changing element have a transparent area, wavelength convert material
Material is configured at the region beyond this transparent area.
3. blue light synthetic method as claimed in claim 2, wherein this blue laser part pass through this transparent area, partly through wavelength
Transition material modulation wavelength and be the blue light of this modulated wavelength.
4. blue light synthetic method as claimed in claim 2, wherein this Wavelength changing element includes color wheel.
5. blue light synthetic method as claimed in claim 2, wherein material for transformation of wave length include fluorescent material, phosphor material or
Fluorescent material is combined with phosphor material.
6. blue light synthetic method as claimed in claim 5, wherein this fluorescent material includes silicon oxide compound.
7. blue light synthetic method as claimed in claim 1, the wherein wavelength of this blue laser are 445nm to 448nm, and this is through adjusting
The main emission wavelength of the blue light of wavelength processed is 460nm ± 5nm.
8. a kind of blue light synthesis system, including：
One luminous source, in order to provide a blue laser；
One Wavelength changing element, is configured at a light path of this blue laser；And
One optical element group, constitutes this light path, and wherein this optical element group includes an optical filter or an attenuator, in order to filter
Or this blue laser of attenuation portions；
Wherein, this blue laser of part excites this Wavelength changing element to send the blue light once modulation wavelength, will be without tune
The blue laser of wavelength processed carries out mixed light with the blue light of this modulated wavelength, and the blue light of this modulated wavelength penetrates this optical filter
Or this attenuator.
9. blue light synthesis system as claimed in claim 8, wherein this optical element group include a spectroscope, in order to reflect this indigo plant
Ray laser, and the blue light of this modulated wavelength penetrates this spectroscope.
10. blue light synthesis system as claimed in claim 8, wherein this Wavelength changing element has a transparent area, wavelength convert
Material is configured at the region beyond this transparent area.
11. blue light synthesis systems as claimed in claim 10, wherein this blue laser part pass through this transparent area, partly through ripple
Long transition material modulation wavelength and be the blue light of this modulated wavelength.
12. blue light synthesis systems as claimed in claim 10, wherein this Wavelength changing element includes color wheel.
13. blue light synthesis systems as claimed in claim 10, wherein material for transformation of wave length include fluorescent material, phosphor material,
Or the combining of fluorescent material and phosphor material.
14. blue light synthesis systems as claimed in claim 13, wherein this fluorescent material includes silicon oxide compound.
15. blue light synthesis systems as claimed in claim 8, the wherein wavelength of this blue laser are 445nm to 448nm, this warp
The main emission wavelength of the blue light of modulation wavelength is 460nm ± 5nm.
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| EP3940436A1 (en) * | 2016-02-15 | 2022-01-19 | Leica Instruments (Singapore) Pte. Ltd. | Illumination filter system and observation system for a multispectral fluorescence microscope, multispectral fluorescence microscope, and microscopying method |
| CN108333833B (en) * | 2018-03-08 | 2020-08-14 | 海信视像科技股份有限公司 | Color film substrate and manufacturing method thereof, display panel and display device |
| GB201810774D0 (en) * | 2018-06-29 | 2018-08-15 | Barco Nv | Display with quantum dot or quantum platelet converter |
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| CN1721963A (en) * | 2004-07-16 | 2006-01-18 | 中国科学院物理研究所 | A kind of have a red, green, blue tricolor laser colour display device |
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| CN202330989U (en) * | 2011-11-21 | 2012-07-11 | 深圳市光峰光电技术有限公司 | Light-emitting device and protection system |
| CN102707551A (en) * | 2011-08-04 | 2012-10-03 | 深圳市光峰光电技术有限公司 | Lighting device and projection device |
| CN102890398A (en) * | 2012-09-27 | 2013-01-23 | 深圳市绎立锐光科技开发有限公司 | Light-emitting device and related projection system |
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- 2013-11-28 CN CN201310625063.1A patent/CN104683775B/en not_active Ceased
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1721963A (en) * | 2004-07-16 | 2006-01-18 | 中国科学院物理研究所 | A kind of have a red, green, blue tricolor laser colour display device |
| CN101430494A (en) * | 2007-11-08 | 2009-05-13 | 北京中视中科光电技术有限公司 | Light source apparatus for projection display and projection display apparatus |
| CN102707551A (en) * | 2011-08-04 | 2012-10-03 | 深圳市光峰光电技术有限公司 | Lighting device and projection device |
| CN202330989U (en) * | 2011-11-21 | 2012-07-11 | 深圳市光峰光电技术有限公司 | Light-emitting device and protection system |
| CN102890398A (en) * | 2012-09-27 | 2013-01-23 | 深圳市绎立锐光科技开发有限公司 | Light-emitting device and related projection system |
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