CN110879505A - High-brightness laser scanning projection module - Google Patents
High-brightness laser scanning projection module Download PDFInfo
- Publication number
- CN110879505A CN110879505A CN202010005796.5A CN202010005796A CN110879505A CN 110879505 A CN110879505 A CN 110879505A CN 202010005796 A CN202010005796 A CN 202010005796A CN 110879505 A CN110879505 A CN 110879505A
- Authority
- CN
- China
- Prior art keywords
- scanning
- laser diode
- optical fiber
- fiber
- light
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000013307 optical fiber Substances 0.000 claims abstract description 55
- 239000000835 fiber Substances 0.000 claims description 33
- 238000003466 welding Methods 0.000 claims description 6
- IVTMXOXVAHXCHI-YXLMWLKOSA-N (2s)-2-amino-3-(3,4-dihydroxyphenyl)propanoic acid;(2s)-3-(3,4-dihydroxyphenyl)-2-hydrazinyl-2-methylpropanoic acid Chemical compound OC(=O)[C@@H](N)CC1=CC=C(O)C(O)=C1.NN[C@@](C(O)=O)(C)CC1=CC=C(O)C(O)=C1 IVTMXOXVAHXCHI-YXLMWLKOSA-N 0.000 claims description 3
- 238000009792 diffusion process Methods 0.000 claims description 3
- 239000011159 matrix material Substances 0.000 claims description 3
- 238000001228 spectrum Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 5
- 239000003086 colorant Substances 0.000 description 4
- 239000004973 liquid crystal related substance Substances 0.000 description 3
- 238000007493 shaping process Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007526 fusion splicing Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
Images
Classifications
-
- 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
- G03B21/2013—Plural light sources
-
- 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
-
- 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
- G03B21/206—Control of light source other than position or intensity
-
- 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
- G03B21/28—Reflectors in projection beam
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mechanical Optical Scanning Systems (AREA)
Abstract
The invention provides a high-brightness laser scanning projection module. The laser device at least comprises a laser diode unit, a condenser unit, a combined optical fiber, a collimating mirror unit, a scanning micromotor, a scanning reflector and a projection screen, wherein the laser diode unit consists of two or more monochromatic laser diodes, each monochromatic laser diode comprises two or more monochromatic laser diodes, and the area of a light emitting point of each monochromatic laser diode is SLDThe light emitting angle of a single monochromatic laser diode is SIN thetaLDThe single monochromatic laser diode outputs light source with the spread of SLD*SINθLD(ii) a And the emergent end of each monochromatic laser diode is provided with a condenser lens unit. The laser scanning projection module increases the number of laser diodes with the same color spectrum, and adopts a condenser focusing mode and an optical fiber leading-in mode to obtain a light source with small light source expansion but large energy, so that the projection brightness is high。
Description
Technical Field
The invention relates to a laser projection device, in particular to a laser scanning projection module which increases the number of laser diodes with the same color spectrum, adopts a condenser focusing mode and an optical fiber guiding mode, can obtain a light source with small light source expansion but large energy and ensures high projection brightness.
Background
The existing projection module mainly has three types, namely a DLP (Digital Light Processing) projection module, a liquid crystal projection module and a laser scanning module, wherein the working principles of the DLP and the liquid crystal projection module are consistent, a DLP chip or a liquid crystal display chip is used as an image display source, and an image is projected to a required area by adopting a projection mode, the two modes have the advantage of high brightness and simultaneously have the defect of low contrast, and the laser scanning projection module projects the image to the required area by a point-by-point scanning mode, so that the laser scanning projection module has the advantage of high contrast and simultaneously has the defect of low brightness.
As shown in fig. 1, a typical common laser scanning projection module mainly comprises a red (R) laser diode 1 ', a green (G) laser diode 2', a blue (B) laser diode 3 ', a beam shaping unit 4', a beam combining mirror 5 ', a beam combining mirror 6', a micro-motor (mems) 8 ', a reflecting mirror 7', a beam shaping unit 9 ', and a projection screen 10';
the laser diode 1 'of red (R) emits laser with a certain divergence angle, forms collimated laser after passing through the beam shaping unit 4', penetrates through the beam combining mirror 4 'and the beam combining mirror 5', and strikes on the reflector 7 'driven by the micromotor 8', and similarly, the laser diodes of green (G) and blue (B) reach the reflector 7 'driven by the micromotor 8' through similar paths;
the micro-motor 8 ' drives the reflector 7 ' to move in the horizontal direction and the vertical direction at a certain step angle, for example, 1200X800 points are scanned in the range of 40 degrees horizontally and 20 degrees vertically, and the laser scanning projection module can display a required color image on the projection screen 10 ' by matching with the display time ratio of the laser diodes with three colors of R/G/B at each scanning point.
The present laser scanning projection module is characterized in that one color can only adopt one laser diode, because of scanning type imaging, a light beam which needs to be emitted is approximately collimated, that is, the light source expansion of a light source needs to be reduced to a certain degree, so that the light source expansion is increased simply in space, the light source expansion is increased by a large margin inevitably, and the effect of improving the brightness can not be achieved, and the specific description is as follows.
In one color one laser diode mode:
light emitting spot area S of laser diodeLDApproximately equal to 0, light-emitting angle SIN thetaLD=0.64 (typical value), so the light source spread of the laser diode is SLD*SINθLDApproximately equals 0, in order to achieve the effect of scanning imaging, the angle of the scanning emergent light is required to be approximately 0 degree, namely SIN thetaSCAN0, while scanning the area S of the mirrorSCAN≈1mm2Therefore, the light source expansion required for the output of the scanning mirror is SSCAN*SINθSCAN≈0，
SLD*SINθLD≈SSCAN*SINθSCANApproximately equal to 0, that is to say the light source spread of the laser diode is approximately equal to or even smaller than the required spread of the scanning-emission light source, so that the energy of the laser diode can be almost fully utilized by one laser diode for one color.
In a mode where there are N laser diodes in one color:
if the laser diode cross-sectional dimension D =10mm2Then, N light sources are spatially arranged, and the light source expansion is N × D × SIN θLDWhen N =2, N × D SIN θLD=20*SINθLDWill be much larger than the scanning emergent light source extension SSCAN*SINθSCAN≈1*SINθSCANTherefore, the energy of the two laser diodes can not be fully utilized, which is equivalent to the energy of the second laser diode is redundant and can not enter the scanning reflector.
Obviously, the brightness of the laser scanning projection module cannot be improved by a plurality of laser diodes with one color in a conventional arrangement mode.
Therefore, in the solution of the laser scanning projection module, three colors of RGB can only use three laser diodes, and the brightness of the laser scanning projection module is obviously limited, although there is a proposal that laser diodes of intermediate wavelength bands are inserted between red and green wavelength bands and between green and blue wavelength bands, and are also merged into the original optical path in a beam combination manner to improve the brightness of the laser scanning projection module, the brightness improvement of the method is obviously limited, and the reduction of the display color gamut can be brought.
Disclosure of Invention
The present invention is directed to solve the above-mentioned problems, and an object of the present invention is to provide a high-brightness laser scanning projection module, which increases the number of laser diodes with the same color spectrum, and adopts a condenser focusing method and an optical fiber guiding method to obtain a light source with a small light source expansion but large energy, so as to achieve high projection brightness.
In order to solve the above-mentioned prior art problems, the technical scheme of the invention is as follows:
a high-brightness laser scanning projection module at least comprises a laser diode unit, a condenser unit, a combined optical fiber, a collimating mirror unit, a scanning micromotor, a scanning reflector and a projection screen, wherein the laser diode unit consists of two or three monochromatic laser diodes, each monochromatic laser diode comprises two or more monochromatic laser diodes, and the area of a light emitting point of each monochromatic laser diode is SLDThe light emitting angle of a single monochromatic laser diode is SIN thetaLDThe single monochromatic laser diode outputs light source with the spread of SLD*SINθLD；
Every monochromatic laser diode 'S exit end is provided with a condensing lens unit, condensing lens unit is used for forming the focus facula with monochromatic laser diode' S emergent light focus, the area of focus facula is SFOCUSThe divergence numerical aperture of the focused light spot is NAFOCUS；
The exit end of each condenser lens unit is provided with an optical fiber input end, a focusing light spot formed by the condenser lens unit falls into the corresponding optical fiber input end, a plurality of optical fiber input ends corresponding to each monochromatic laser diode form a combined optical fiber in a binding or welding mode, and the area of the single optical fiber input end is SFIBERThe numerical aperture of divergence of the input end of a single optical fiber is NAFIBERLight source spread of S for single fiber input endFIBER*NAFIBEREach monochromatic laser diode is NLDThe light source expansion of the output end of the combined optical fiber is NLD*SFIBER*NAFIBER；
The optical fiber input end satisfies the condition: sFOCUS≤SFIBER，NAFOCUS≤NAFIBER；
The emergent end of each combined optical fiber is provided with a collimating mirror unit which is used for collimating the light beam at the emergent end of the combined optical fiber in a certain light spot area SCOMAnd a divergent numerical aperture NACOMInternal;
the exit end of the collimating mirror unit is provided with a beam combiner, and the light beams at the exit ends of the plurality of combined optical fibers are combined into a combined light beam through the beam combiner;
the scanning speculum sets up on the light path of combination light beam, combination light beam forms the scanning through the scanning speculum and exits the light beam, the projection screen sets up on the light path of the scanning outgoing light beam, the scanning micromotor is connected with the scanning speculum, the scanning micromotor drives the scanning speculum with certain step angle and carries out the motion of horizontal direction and vertical direction, the combination light beam forms the scanning outgoing light beam after the scanning speculum, the scanning outgoing light beam projects the projection screen with the matrix mode according to the motion of scanning speculum and forms the image, the scanning speculum area is SSCANThe divergence numerical aperture of the scanned emergent beam is NASCANThe allowable diffusion angle of the scanning emergent light beam is SIN thetaSCAN；
The scanning mirror satisfies the condition one: sCOM≤SSCAN，NACOM≤NASCAN；
The scanning mirror satisfies the second condition: n is a radical ofLD*SFIBER*NAFIBER≤SSCAN*SINθSCAN。
Further, the monochromatic laser diode is a red laser diode or a green laser diode or a blue laser diode;
further, the condenser unit is a lens or two lenses or a plurality of lenses;
further, the manner in which a plurality of the optical fiber input ends form one combined optical fiber is not limited to the bundling or fusion splicing manner.
Each monochromatic laser diode of the laser scanning projection module is provided with two or more monochromatic laser diodes, for example, two or more red laser diodes are arranged, light emitted by the two or more red laser diodes is respectively focused into a light spot through the corresponding condenser lens unit, the light spot falls in the corresponding optical fiber input end, a plurality of optical fiber input ends form a combined optical fiber in a binding or welding mode, a red light source with little increase of light source expansion amount but much increase of energy is obtained at the exit end of the combined optical fiber, light beams at the exit end of the combined optical fiber are shaped by the collimating lens unit to become approximately collimated light spots, the collimated light spots pass through the beam combining lens and then strike on the scanning reflector, the scanning reflector is driven by a micromotor to scan and reflect to a projection screen, and the green laser diode and the blue laser diode are based on the same principle, and finally, forming a display image synthesized by multiple colors on the projection screen, wherein each monochromatic laser diode of the display image light source adopts two or more monochromatic laser diodes, and the light source expansion is effectively controlled in the light path process, so that the energy of the display image is increased, and high-brightness display is realized.
The invention relates to a high-brightness laser scanning projection module, which has the beneficial effects that:
1. the laser scanning projection module increases the number of laser diodes with the same color spectrum, and adopts a condenser focusing mode and an optical fiber leading-in mode, so that a light source with small light source expansion amount and large energy can be obtained, and the projection brightness is high;
2. the laser scanning projection module projects an image to a required area in a point-by-point scanning mode and has the advantage of high contrast.
Drawings
FIG. 1 is a schematic diagram of a conventional laser scanning projection module;
fig. 2 is a structural diagram of a high-brightness laser scanning projection module according to the present invention.
Detailed Description
The invention is further illustrated by the following examples:
example (b):
a high-brightness laser scanning projection module comprises a laser diode unit, a condenser unit 4, a combined optical fiber 6, a collimating mirror unit 5, a scanning micromotor 8, a scanning reflector 7 and a projection screen 10, wherein the laser diode unit consists of three monochromatic laser diodes including a red laser diode 1, a green laser diode 2 and a blue laser diode 3, each monochromatic laser diode comprises three monochromatic laser diodes, and the area of a light emitting point of each monochromatic laser diode is SLDThe light emitting angle of a single monochromatic laser diode is SIN thetaLDThe single monochromatic laser diode outputs light source with the spread of SLD*SINθLD；
Every monochromatic laser diode 'S exit end is provided with a condensing lens unit 4, condensing lens unit 4 is used for forming the focus facula with monochromatic laser diode' S exit light focus, the area of focus facula is SFOCUSThe divergence numerical aperture of the focused light spot is NAFOCUS；
Each exit end of the condenser lens unit 4 is provided with an optical fiber input end 6, a focusing light spot formed by the condenser lens unit 4 falls into the corresponding optical fiber input end 6, a plurality of optical fiber input ends 6 corresponding to each monochromatic laser diode form a combined optical fiber 9 in a binding or welding mode, and the area of the single optical fiber input end is SFIBERThe numerical aperture of divergence of the input end of a single optical fiber is NAFIBERLight source spread of S for single fiber input endFIBER*NAFIBERAnd the number of each monochromatic laser diode is 3, the light source expansion of the output end of the combined optical fiber is 3SFIBER*NAFIBER；
The optical fiber input end 6 satisfies the condition: sFOCUS≤SFIBER，NAFOCUS≤NAFIBER；
The emergent end of each combined optical fiber 9 is provided with a collimating mirror unit 5 which is used for collimating the light beam at the emergent end of the combined optical fiber in a certain light spot area SCOMAnd a divergent numerical aperture NACOMInternal;
the exit end of the collimating mirror unit is provided with beam combining mirrors 11 and 12, and the beams at the exit ends of the three combined optical fibers 9 are combined into a combined beam after passing through the beam combining mirror 11 and the beam combining mirror 12;
the scanning reflector 7 is arranged on a light path of the combined light beam, the combined light beam forms a scanning emergent light beam through the scanning reflector 7, the projection screen 10 is arranged on a light path of the scanning emergent light beam, the scanning micromotor 8 is connected with the scanning reflector 7, the scanning micromotor drives the scanning reflector to move in the horizontal direction and the vertical direction at a certain stepping angle, the combined light beam forms a scanning emergent light beam after passing through the scanning reflector, the scanning emergent light beam is projected to the projection screen in a matrix mode according to the movement of the scanning reflector to form an image, and the area of the scanning reflector is SSCANThe divergence numerical aperture of the scanned emergent beam is NASCANThe allowable diffusion angle of the scanning emergent light beam is SIN thetaSCAN；
The scanning mirror satisfies the condition one: sCOM≤SSCAN，NACOM≤NASCAN；
The scanning mirror satisfies the second condition: 3SFIBER*NAFIBER≤SSCAN*SINθSCAN。
Each monochromatic laser diode of the laser scanning projection module is provided with three monochromatic laser diodes, if three red laser diodes 1 are arranged, light emitted by the three red laser diodes is focused into a light spot through corresponding condenser lens units respectively, the light spot falls into a corresponding optical fiber input end, the three optical fiber input ends form a combined optical fiber in a welding mode, a red light source with little increase of light source expansion amount but much increase of energy is obtained at the exit end of the combined optical fiber, light beams at the exit end of the combined optical fiber are shaped by a collimating lens unit and then become approximately collimated light spots, the collimated light spots pass through a beam combining lens and then are emitted onto a scanning reflecting mirror, a micro-motor drives the scanning reflecting mirror to scan and reflect to a projection screen, a green laser diode 2 and a blue laser diode 3 form a display image synthesized by three colors on the projection screen according to the same principle, each monochromatic laser diode of the image display light source adopts three monochromatic laser diodes, and the light source expansion is effectively controlled in the light path process, so that the energy of the displayed image is increased, and high-brightness display is realized.
The present invention has been described in detail, and it should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
Claims (4)
1. A high-brightness laser scanning projection module is characterized by at least comprising a laser diode unit, a condenser unit, a combined optical fiber, a collimating mirror unit, a scanning micromotor, a scanning reflector and a projection screen, wherein the laser diode unit consists of two or three monochromatic laser diodes, each monochromatic laser diode comprises two or more monochromatic laser diodes, and the area of a light emitting point of a single monochromatic laser diode is SLDThe light emitting angle of a single monochromatic laser diode is SIN thetaLDThe single monochromatic laser diode outputs light source with the spread of SLD*SINθLD；
Every monochromatic laser diode 'S exit end is provided with a condensing lens unit, condensing lens unit is used for forming the focus facula with monochromatic laser diode' S emergent light focus, the area of focus facula is SFOCUSThe divergence numerical aperture of the focused light spot is NAFOCUS；
The exit end of each condenser unit is provided with an optical fiber input end, and the condenser unitThe focusing light spot formed by the element falls into the corresponding optical fiber input end, a plurality of optical fiber input ends corresponding to each monochromatic laser diode form a combined optical fiber in a bundling or welding mode, and the area of the single optical fiber input end is SFIBERThe numerical aperture of divergence of the input end of a single optical fiber is NAFIBERLight source spread of S for single fiber input endFIBER*NAFIBEREach monochromatic laser diode is NLDThe light source expansion of the output end of the combined optical fiber is NLD*SFIBER*NAFIBER；
The optical fiber input end satisfies the condition: sFOCUS≤SFIBER，NAFOCUS≤NAFIBER；
The emergent end of each combined optical fiber is provided with a collimating mirror unit which is used for collimating the light beam at the emergent end of the combined optical fiber in a certain light spot area SCOMAnd a divergent numerical aperture NACOMInternal;
the exit end of the collimating mirror unit is provided with a beam combiner, and the light beams at the exit ends of the plurality of combined optical fibers are combined into a combined light beam through the beam combiner;
the scanning speculum sets up on the light path of combination light beam, combination light beam forms the scanning through the scanning speculum and exits the light beam, the projection screen sets up on the light path of the scanning outgoing light beam, the scanning micromotor is connected with the scanning speculum, the scanning micromotor drives the scanning speculum with certain step angle and carries out the motion of horizontal direction and vertical direction, the combination light beam forms the scanning outgoing light beam after the scanning speculum, the scanning outgoing light beam projects the projection screen with the matrix mode according to the motion of scanning speculum and forms the image, the scanning speculum area is SSCANThe divergence numerical aperture of the scanned emergent beam is NASCANThe allowable diffusion angle of the scanning emergent light beam is SIN thetaSCAN；
The scanning mirror satisfies the condition one: sCOM≤SSCAN，NACOM≤NASCAN；
The scanning mirror satisfies the conditionII, secondly: n is a radical ofLD*SFIBER*NAFIBER≤SSCAN*SINθSCAN。
2. A high brightness laser scanning projection module according to claim 1, wherein said monochromatic laser diode is a red laser diode or a green laser diode or a blue laser diode.
3. A high brightness laser scanning projection module according to claim 1, wherein said condenser lens unit is a lens or two lenses or more lenses.
4. A high brightness laser scanning projection module according to claim 1, wherein the manner of forming a combined optical fiber by a plurality of said optical fiber input ends is not limited to binding or welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010005796.5A CN110879505B (en) | 2020-01-03 | 2020-01-03 | High-brightness laser scanning projection module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010005796.5A CN110879505B (en) | 2020-01-03 | 2020-01-03 | High-brightness laser scanning projection module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110879505A true CN110879505A (en) | 2020-03-13 |
| CN110879505B CN110879505B (en) | 2024-07-23 |
Family
ID=69731609
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010005796.5A Active CN110879505B (en) | 2020-01-03 | 2020-01-03 | High-brightness laser scanning projection module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110879505B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111766712A (en) * | 2020-07-23 | 2020-10-13 | 深圳市锐思华创技术有限公司 | Laser scanning projection module with high brightness, wide color gamut and low light spot |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006004085A1 (en) * | 2006-01-25 | 2007-08-02 | Jenoptik Ldt Gmbh | Projection arrangement for Head up display comprises projector unit and projection surface |
| CN102096289A (en) * | 2009-12-15 | 2011-06-15 | 宋焕玉 | Mobile projector of semiconductor laser pumping micro solid green laser light source |
| EP2709366A2 (en) * | 2012-09-14 | 2014-03-19 | Hitachi Media Electronics Co., Ltd. | Scanning type projector |
| CN210924173U (en) * | 2020-01-03 | 2020-07-03 | 深圳市锐思华创技术有限公司 | High-brightness laser scanning projection module |
-
2020
- 2020-01-03 CN CN202010005796.5A patent/CN110879505B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006004085A1 (en) * | 2006-01-25 | 2007-08-02 | Jenoptik Ldt Gmbh | Projection arrangement for Head up display comprises projector unit and projection surface |
| CN102096289A (en) * | 2009-12-15 | 2011-06-15 | 宋焕玉 | Mobile projector of semiconductor laser pumping micro solid green laser light source |
| EP2709366A2 (en) * | 2012-09-14 | 2014-03-19 | Hitachi Media Electronics Co., Ltd. | Scanning type projector |
| CN210924173U (en) * | 2020-01-03 | 2020-07-03 | 深圳市锐思华创技术有限公司 | High-brightness laser scanning projection module |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111766712A (en) * | 2020-07-23 | 2020-10-13 | 深圳市锐思华创技术有限公司 | Laser scanning projection module with high brightness, wide color gamut and low light spot |
| CN111766712B (en) * | 2020-07-23 | 2022-02-01 | 深圳市锐思华创技术有限公司 | Laser scanning projection module with high brightness, wide color gamut and low light spot |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110879505B (en) | 2024-07-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7817212B2 (en) | Laser video projector having multi-channel acousto-optic modulator, and method and circuit for driving the same | |
| US7988300B2 (en) | Illumination device, projection video display device, and fly-eye lens | |
| US10754234B2 (en) | Projection device | |
| CN113867088A (en) | Optical illumination system and laser projection equipment | |
| CN113835288B (en) | Laser projection system and light source device | |
| CN111766756B (en) | Laser light source and laser projection equipment | |
| US10649324B2 (en) | Illumination device and projector | |
| CN210924173U (en) | High-brightness laser scanning projection module | |
| CN110879505A (en) | High-brightness laser scanning projection module | |
| CN111766712B (en) | Laser scanning projection module with high brightness, wide color gamut and low light spot | |
| JP2002372677A (en) | Projection type image display and multiplexing optical system for the same | |
| US20220190552A1 (en) | Laser package and projector with the laser package | |
| CN214540362U (en) | Optical fiber coupling and high-definition laser projection module | |
| CN112738484B (en) | Laser projection device | |
| US20240004278A1 (en) | Light source and laser projection device | |
| CN220399790U (en) | Laser scanning projection device of coupling light source | |
| CN218441864U (en) | Reflective high-power laser lighting module | |
| US20240012318A1 (en) | Light source and laser projection apparatus | |
| CN214540355U (en) | Light source beam combining structure and light source module | |
| CN219936272U (en) | Light source device and projection equipment | |
| CN114114675B (en) | Spliced scanning projection device and method | |
| CN111929973B (en) | Five-channel LED light path structure for projector | |
| CN111796475B (en) | Light source beam combining module, projection display device and projection display equipment | |
| CN117518695A (en) | Projection display device | |
| CN116381929A (en) | Scanning type light source and projection display device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |