CN104345535A - Laser light source and projection device - Google Patents
Laser light source and projection device Download PDFInfo
- Publication number
- CN104345535A CN104345535A CN201410535060.3A CN201410535060A CN104345535A CN 104345535 A CN104345535 A CN 104345535A CN 201410535060 A CN201410535060 A CN 201410535060A CN 104345535 A CN104345535 A CN 104345535A
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- Prior art keywords
- laser
- light source
- wavelength conversion
- conversion layer
- collecting lens
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Classifications
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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
- G03B21/2006—Lamp housings characterised by the light source
- G03B21/2033—LED or laser light sources
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
- F21V13/02—Combinations of only two kinds of elements
- F21V13/08—Combinations of only two kinds of elements the elements being filters or photoluminescent elements and reflectors
-
- 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
- G03B21/2006—Lamp housings characterised by the light source
- G03B21/2033—LED or laser light sources
- G03B21/204—LED or laser light sources using secondary light emission, e.g. luminescence or fluorescence
-
- 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
- G03B21/2066—Reflectors in illumination beam
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Optics & Photonics (AREA)
- General Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Semiconductor Lasers (AREA)
Abstract
The invention discloses a laser light source and a projection device. The laser light source comprises a laser diode array, a wavelength conversion turntable, a reflection device and a driving device, wherein the laser diode array is used for emitting laser to a first direction; the wavelength conversion turntable comprises a wavelength conversion layer which is positioned on the surface of the turntable and is circumferentially distributed; the reflection device is used for reflecting and converging the laser emitted along the first direction onto the wavelength conversion layer of the wavelength conversion turntable, and the incident angle of the reflected laser incident to the wavelength conversion layer is larger than a first angle; the driving device is used for driving the wavelength conversion turntable to rotate. According to the laser light source, the direction of the reflection device is set in a way that the incident angle of the laser reflected by the reflection device and incident to the wavelength conversion layer is larger than the first angle, so that an aperture within the first angle is avoided to output stimulated light, and a stimulated light path can be distinguished from a laser light path. Compared with the prior art, the laser light source is more compact in structure and smaller in size.
Description
Technical field
The present invention relates to light source field, particularly relate to the light source using laser technology and the projection arrangement using this LASER Light Source.
Background technology
Current, light source technology is applied to numerous areas, and applying maximum light sources is Halogen lamp LED and fluorescent light.The maximum problem of these light sources is luminance shortage.In recent years, rapidly, utilize blue LED to excite the yellow fluorescent powder being coated on LED surface to produce white light, this light source has started commercially to popularize in LED light source development.But problem is that the power of single LEDs light source is lower, still there is the problem of luminance shortage.
And high-luminance light source domain, conventional is high-pressure sodium lamp and xenon source, and such light source relies on ultrashort lamp arc and has very high brightness (energy density), but problem is its life-span only has 1000 hours, and use cost is very high.
Occurred a kind of semiconductor light sources at present, its structure as shown in Figure 1.The exciting light 121 that excitation source (not shown in FIG.) sends through the transmission of light splitting optical filter 111 be incident in lens 103 and through lens 103 refraction and focus on wavelength convert rotating disk 102.Wavelength convert rotating disk 102 comprises the wavelength conversion layer 101 along the circumferential direction distributed, and this wavelength convert rotating disk 102 is driven and uniform rotation by motor 104, the diverse location of wavelength conversion layer 101 is made periodically to be positioned at continuous illumination under exciting of exciting light 121.Rear collimation is collected by lens 103, the final outgoing through the reflection of light splitting optical filter 111 from the Stimulated Light 122 of wavelength conversion layer 101 outgoing.In this light source, light splitting optical filter 111 transmission exciting light reflects Stimulated Light simultaneously, its role is to the light path of exciting light and Stimulated Light to be separated.If not this light splitting optical filter, then Stimulated Light all will cause serious light loss to the outgoing of excitation source direction.
But owing to there being the existence of light splitting optical filter, whole light-source structure has become complicated and huge, and this is unfavorable for the development trend of current light source miniaturization.In addition, the remaining exciting light in emergent light can filter out by light splitting optical filter, and this is also a part of light loss.
Summary of the invention
The present invention proposes a kind of LASER Light Source, comprises diode laser matrix, for first direction Emission Lasers; Wavelength convert rotating disk, this wavelength convert rotating disk comprises the wavelength conversion layer along the circumferential direction distributed be positioned in its card; Also comprise reflection unit, for the laser reflection launched along first direction is converged at the wavelength conversion layer of wavelength convert rotating disk, the incident angle being incident in wavelength conversion layer by the laser reflected is greater than the first angle; Also comprise drive unit, for driving wavelength convert dial rotation.
The present invention also proposes a kind of projection arrangement, comprises the lighting source of above-mentioned LASER Light Source for this projection arrangement, also comprises light valve and modulates to produce image to the light that LASER Light Source sends.
The angle that LASER Light Source of the present invention makes the laser through reflection unit reflection be incident in wavelength conversion layer by the orientation arranging reflection unit is greater than the first angle, with regard to the aperture got out of the way within the first angle, Stimulated Light can be exported like this, this makes the light path of Stimulated Light and laser be distinguished.Compared with background technology, the LASER Light Source structure in the present invention is more compact, and volume is less.
Accompanying drawing explanation
Fig. 1 illustrates the structural representation of light source in prior art;
Fig. 2 A and 2B represents first embodiment of the invention schematic diagram in the two directions;
Fig. 3 A illustrates the structural representation of another embodiment of the present invention;
Fig. 3 B illustrates the front elevation of the first smooth collecting lens in Fig. 3 A illustrated embodiment;
Fig. 4 illustrates the structural representation of another embodiment of the present invention;
Fig. 5 A illustrates the structural representation of another embodiment of the present invention;
Fig. 5 B illustrates the structural representation of another embodiment of the present invention;
Fig. 6 illustrates the structural representation of another embodiment of the present invention.
Embodiment
The present invention proposes a kind of LASER Light Source, and its structural representation as shown in Figure 2 A and 2 B.The left side of Fig. 2 A and 2B indicates the schematic diagram of rectangular coordinate system respectively: be upwards x direction in Fig. 2 A, be to the right z direction, vertical paper is outwards y direction; Being upwards y direction in Fig. 2 B, is to the right x direction, and vertical paper is outwards z direction.Fig. 2 A and 2B uses same coordinate system, and this indicates the observed bearing of the schematic diagram in Fig. 2 A and 2B.It should be noted that the legend of all embodiments in the present invention is all that the coordinate system identified in figure below all illustrates the observed bearing of corresponding embodiment with identical coordinate system, this below describe in no longer repeat specification.
As shown in Figure 2 A, in the present embodiment, LASER Light Source comprises diode laser matrix (two that represent wherein with laser diode 201), for first direction (z direction) Emission Lasers (using laser beam 221 as a citing); Also comprise wavelength convert rotating disk 202, this wavelength convert rotating disk 202 comprises the wavelength conversion layer 202a(along the circumferential direction distributed be positioned in its card and sees Fig. 2 B).LASER Light Source also comprises reflection unit (two that represent wherein with catoptron 204), for being reflected by the laser launched along first direction 221 and converging at the wavelength conversion layer 202a of wavelength convert rotating disk, the incident angle being incident in wavelength conversion layer 202a by the laser 221 reflected is greater than the first angle; Also comprising drive unit 203, rotating for driving wavelength convert rotating disk 202.
In the present embodiment, reflection unit comprise multiple with laser diode catoptron (two that represent wherein with catoptron 204) one to one, the orientation of each catoptron is adjusted to the same point reflexed to by the laser beam incided on it on wavelength conversion layer 202a, and all like this laser can to converge on wavelength conversion layer 202a and excites it and produce Stimulated Light.Stimulated Light is isotropic emission, preferably, the surface of wavelength convert rotating disk 202 is reflecting surface (such as wavelength convert rotating disk 202 has reflectance coating as reflective aluminum plate or its surface), the Stimulated Light of then launching to-y direction can be transferred to the outgoing of+y direction by the reflective surface reflects of wavelength convert rotating disk, and this contributes to the collection efficiency improving Stimulated Light.
In the present embodiment, drive unit 203 drives wavelength convert rotating disk 202 to rotate, this makes the diverse location on wavelength conversion layer 202a to be periodically excited optical excitation, and this can effectively be avoided some points of wavelength conversion layer to be excited and overheating failure by continuous print.Laser 221 is reflected by reflection unit 204, the incident angle being incident in wavelength conversion layer 202a by the laser 221 reflected is greater than the first angle, such benefit is that major part in Stimulated Light can not overlap with the light path of laser 221 from outgoing in the aperture being less than the first angle and cause damage, and such as, in Fig. 2 A, Stimulated Light 222 is from outgoing in the aperture being less than the first angle.
The LASER Light Source of the present embodiment does not adopt the optical texture of large tablet filter 111 light splitting in Fig. 1 to distinguish the light path of exciting light (laser) and Stimulated Light, but be greater than the first angle by the angle that the orientation arranging reflection unit makes the laser through reflection unit reflection be incident in wavelength conversion layer 202a, with regard to the aperture got out of the way within the first angle, Stimulated Light can be exported like this, the light path of Stimulated Light and laser is distinguished.Compared with the background technology in Fig. 1, the LASER Light Source structure in the present embodiment is more compact, and volume is less.
In the present embodiment, as shown in Figure 2 B, along in the projection of first direction, the multiple laser diodes 201 in diode laser matrix are arranged in wavelength convert rotating disk 202 around, like this can the compactedness of further elevator system.
In the present embodiment, preferably, on the wavelength conversion layer 202a of wavelength convert rotating disk, be along the circumferential direction distributed with multiple sections, wherein at least one section comprises material for transformation of wave length.Such benefit is, these multiple sections can have different wavelength convert attributes, like this when wavelength convert rotating disk 202 driven device 203 drive rotate time, these multiple sections can be incident by laser 221 periodically successively and produce the Stimulated Light of different colours.The Stimulated Light of these periodically variable different colours can as the light source light of projection arrangement.
Further, laser is blue laser, at least comprises scattering section in multiple sections of wavelength conversion layer, and scattering section comprises scattering material.When this scattering section turns to the convergent point of blue laser, blue laser is scattered material institute's scattering and outgoing forms blue emergent light, and wherein the effect of scattering material is the coherence eliminating laser.Preferably, scattering section also may comprise at least one in blue wavelength transition material, green wavelength transition material, dark green material for transformation of wave length, yellow green material for transformation of wave length, yellow wavelengths transition material, like this when blue laser is incident in scattering section, part blue laser is directly scattered outgoing, and part blue laser is absorbed by above-mentioned material for transformation of wave length and produces the Stimulated Light of respective color, this part Stimulated Light can mix outgoing with the blue laser being scattered directly outgoing.This part Stimulated Light has certain correcting for the color of blue laser, makes the blue light color of color closer to standard of the mixed light of outgoing.
Certainly, wavelength conversion layer also may only include a section, and such as only include a green segment containing green wavelength transition material, this LASER Light Source is by outgoing green glow like this.Such as only include a section containing yellow wavelengths transition material again, this LASER Light Source is by outgoing gold-tinted like this; If now laser is blue light, this LASER Light Source also may outgoing gold-tinted and do not have the mixed light of absorbed remaining blue light thus outgoing white.
What deserves to be explained is, the catoptron 204 in the present embodiment is the catoptrons for laser, and it may reflect Stimulated Light also can transmissive Stimulated Light.If its transmission Stimulated Light, then within the outgoing scope of Stimulated Light is just not limited only to the first angle, the Stimulated Light beyond the first angle also may the outgoing through catoptron 204.Now, although catoptron 204 is provided with the selection attribute to optical wavelength of optical filter, the present embodiment still has the little advantage of compact conformation volume compared with the structure shown in Fig. 1.
In actual applications, choosing of the first angle has certain rule.If choose excessive, then the input path of laser designs and assembles all very difficult; If choose too small, the emergent light outgoing aperture on wavelength conversion layer will be affected.Preferably, the general value of the first angle is between 45 degree to 70 degree.
The structural representation of an alternative embodiment of the invention as shown in Figure 3A.With the embodiment shown in Fig. 2 A unlike, in the present embodiment, also comprise the first smooth collecting lens 305.The front elevation of the first smooth collecting lens 305 as shown in Figure 3 B, comprises inner 305b, outside 305a two regions in its effective aperture.As shown in Figure 3A, the laser 321 reflected through reflection unit 304 is incident in the perimeter 305a of the effective aperture of the first smooth collecting lens 305 and is converged on the wavelength conversion layer of wavelength convert rotating disk by its refraction, be incident in the interior zone 305b of the effective aperture of the first smooth collecting lens 305 from most of light of wavelength conversion layer outgoing (mixed light of exciting light comprising Stimulated Light or Stimulated Light and be scattered, in figure 3 a be with the dotted line of arrow to represent) and collected also outgoing by it.
Knowledge according to geometrical optics is appreciated that, the light being incident in the perimeter 305a of the first smooth collecting lens can be incident in wavelength conversion layer with larger angle after superrefraction, the scope controlling perimeter 305a just can control the angular range of incident laser, makes it meet the requirement being greater than the first angle.That is, in the present embodiment, by controlling the scope of interior zone in the effective aperture of the first smooth collecting lens 305 and perimeter, the incident angle range controlling laser 321 can be realized, the requirement making it meet incident angle to be greater than the first angle.Simultaneously, from the light of wavelength conversion layer outgoing (mixed light of exciting light comprising Stimulated Light or Stimulated Light and be scattered), major part is incident in the interior zone 305b of the effective aperture of the first smooth collecting lens 305 and is collected and outgoing by it, has so just successfully distinguished the light path of laser and Stimulated Light.
Certainly in the present embodiment, catoptron 304 also can be the optical filter of reflects laser transmission Stimulated Light, and the part being greater than the first angle outgoing in such Stimulated Light also can the outgoing collected by light path below through catoptron 304.
Compared with embodiment shown in the present embodiment with Fig. 2 A, employ the first smooth collecting lens to the collection of the convergence and Stimulated Light that realize laser, light efficiency is higher, and system is more simple and compact.
Originally executing in example, preferably, also comprising the light shaping device in the light path between diode laser matrix to the first smooth collecting lens or light scattering device.Light shaping device may be microlens array or optical diffraction original paper (DOE), for the laser facula being incident in wavelength conversion layer is shaped to predetermined shape, such as square or rectangular, and the laser facula being incident in wavelength conversion layer can be scattering into roughly in the circle of Gaussian distribution or ellipse by light scattering device.In a word, no matter light shaping device or light scattering device can be incident in the laser facula diffusion of wavelength conversion layer to reduce laser power density, and this lifting for the conversion efficiency of wavelength conversion layer is helpful.
The structural representation of an alternative embodiment of the invention as shown in Figure 4.The present embodiment is the modified of the embodiment shown in Fig. 3 A.Compared with the embodiment shown in Fig. 3 A, in the effective aperture that the LASER Light Source of the present embodiment also comprises the smooth collecting lens 406 of the second smooth collecting lens 406, second being positioned at the first smooth collecting lens 405 light path rear end, comprise inside, outside two regions; Reflection unit 404 is for being positioned at the reflection plated film of the perimeter of the second smooth collecting lens 406, and the interior zone of the effective aperture of the second smooth collecting lens is for collecting the light from the first smooth collecting lens 405 outgoing.Like this, second smooth collecting lens 406 is just integrated with reflection unit 404, the reflection unit 404 of laser on the perimeter of the second smooth collecting lens reflects and is incident in the perimeter of the first smooth collecting lens, further collimates or focuses on outgoing simultaneously from the light of the interior zone outgoing of the first smooth collecting lens 405 through the interior zone of the second smooth collecting lens.Obviously, the LASER Light Source structure formed like this is more compact.
In the above-described embodiments, in a first direction (z direction) diode laser matrix is arranged in around wavelength convert rotating disk to ensure; The laser that laser diode sends can not block by wavelength convert rotating disk.In fact, which limit the quantity of laser diode, also just limit the general power of laser and the total brightness of light source.In order to improve this problem, in another embodiment (its structural representation as shown in Figure 5A), diode laser matrix comprises at least one the first laser diode 511, and the laser that this first laser diode 511 is launched passes the card being positioned at wavelength conversion layer 502a survey of wavelength convert rotating disk 502.In the present embodiment, the card being positioned at wavelength conversion layer 502a survey of wavelength convert rotating disk 502 is transparent.Such as its material is clear glass, and the laser 513 launched of such laser diode 511 just can this clear glass of transmission and be incident in reflection unit 512 and converged and wavelength conversion layer 502a with other laser by its reflection.Embodiment shown in Fig. 5 B then illustrates another laser through the mode surveying card in wavelength conversion layer.In this embodiment, the card that wavelength conversion layer 502a surveys that is positioned at of wavelength convert rotating disk has three void region 502b1, has join domain 502b2 to carry and drive the rotation in region at wavelength conversion layer place between void region.When wavelength convert dial rotation, can reflection unit 512 be incident in through three void region 502b1 at most of the time inner laser 513 and be reflected by it thus converge at wavelength conversion layer 502a with other laser.
In the aforementioned embodiment, along in the projection of first direction, multiple laser diodes in diode laser matrix are all be arranged in around wavelength convert rotating disk with circle-shaped, and whole like this light source looks over the profile (light shell outer cover 241 of the such as sub-circular shown in Fig. 2 B) with sub-circular at first direction (z direction).In actual applications, squarish or rectangular configuration are also often application, in embodiment as shown in Figure 6, along in the projection of first direction, multiple laser diodes in diode laser matrix are arranged in around wavelength convert rotating disk with oblong-shaped, and this does not obviously affect the working method of the light source crossed described in above-described embodiment.The arrangement mode of obvious laser diode can change the demand of profile according in practical application.
The present invention also proposes a kind of projection arrangement, comprises the lighting source of above-mentioned LASER Light Source for this projection arrangement, also comprises light valve and modulates to produce image to the light that LASER Light Source sends.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every utilize instructions of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (10)
1. a LASER Light Source, is characterized in that, comprising:
Diode laser matrix, for first direction Emission Lasers;
Wavelength convert rotating disk, this wavelength convert rotating disk comprises the wavelength conversion layer along the circumferential direction distributed be positioned in its card;
Reflection unit, for the laser reflection launched along first direction is converged at the wavelength conversion layer of described wavelength convert rotating disk, the incident angle being incident in wavelength conversion layer by the laser reflected is greater than the first angle;
Also comprise drive unit, for driving wavelength convert dial rotation.
2. LASER Light Source according to claim 1, is characterized in that, on the wavelength conversion layer of described wavelength convert rotating disk, be along the circumferential direction distributed with multiple sections, wherein at least one section comprises material for transformation of wave length.
3. LASER Light Source according to claim 2, is characterized in that, described laser is blue laser, at least comprises scattering section in multiple sections of described wavelength conversion layer, and scattering section comprises scattering material.
4. LASER Light Source according to claim 3, it is characterized in that, described scattering section also comprises at least one in blue wavelength transition material, green wavelength transition material, dark green material for transformation of wave length, yellow green material for transformation of wave length, yellow wavelengths transition material.
5. the LASER Light Source according to any one in Claims 1-4, is characterized in that, along in the projection of first direction, described diode laser matrix is arranged in around described wavelength convert rotating disk.
6. the LASER Light Source according to any one in Claims 1-4, it is characterized in that, also comprise the first smooth collecting lens, inside, outside two regions are comprised in the effective aperture of this first smooth collecting lens, laser through reflection unit reflection is incident in the perimeter of the effective aperture of the first smooth collecting lens and converges on the wavelength conversion layer of wavelength convert rotating disk, is incident in the interior zone of the effective aperture of the first smooth collecting lens and is collected and outgoing by it from most of light of wavelength conversion layer outgoing.
7. LASER Light Source according to claim 6, is characterized in that, also comprises the light shaping device in the light path between diode laser matrix to the first smooth collecting lens or light scattering device.
8. LASER Light Source according to claim 6, is characterized in that, also comprises the second smooth collecting lens being positioned at the first smooth collecting lens light path rear end, comprises inside, outside two regions in the effective aperture of the second smooth collecting lens; Described reflection unit is the reflection plated film of the perimeter being positioned at the second smooth collecting lens, and the interior zone of the effective aperture of the second smooth collecting lens is for collecting the light from the first smooth collecting lens outgoing.
9. the LASER Light Source according to the people in Claims 1-4 one, it is characterized in that, described diode laser matrix comprises at least one the first laser diode, and the laser that this first laser diode is launched passes the card being positioned at wavelength conversion layer survey of wavelength convert rotating disk.
10. a projection arrangement, is characterized in that, comprises the lighting source of LASER Light Source according to any one of claim 1 to 9 for this projection arrangement, also comprises light valve and modulates to produce image to the light that LASER Light Source sends.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410535060.3A CN104345535B (en) | 2014-10-12 | 2014-10-12 | LASER Light Source and projection arrangement |
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| CN201410535060.3A CN104345535B (en) | 2014-10-12 | 2014-10-12 | LASER Light Source and projection arrangement |
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| CN104345535A true CN104345535A (en) | 2015-02-11 |
| CN104345535B CN104345535B (en) | 2016-06-22 |
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| CN105700281A (en) * | 2016-04-06 | 2016-06-22 | 深圳市华星光电技术有限公司 | Light source component and projector |
| EP3321723A1 (en) * | 2016-11-09 | 2018-05-16 | Christie Digital Systems USA, Inc. | Apparatus for wavelength conversion |
| WO2019205126A1 (en) * | 2018-04-28 | 2019-10-31 | Materion Precision Optics (Shanghai) Limited | High efficiency and uniformity white light generator stimulated by laser |
| WO2020248558A1 (en) * | 2019-06-13 | 2020-12-17 | 广州光联电子科技有限公司 | Optical system of laser light source |
| JP2021081723A (en) * | 2019-11-22 | 2021-05-27 | ▲雪▼▲亭▼ 劉 | Light source module |
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| CN105700281A (en) * | 2016-04-06 | 2016-06-22 | 深圳市华星光电技术有限公司 | Light source component and projector |
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| JP7013549B2 (en) | 2019-11-22 | 2022-01-31 | ▲雪▼▲亭▼ 劉 | Light source module |
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| Publication number | Publication date |
|---|---|
| CN104345535B (en) | 2016-06-22 |
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