CN102566218A - Dual-chip passive polarized type three-dimensional projection system - Google Patents
Dual-chip passive polarized type three-dimensional projection system Download PDFInfo
- Publication number
- CN102566218A CN102566218A CN2012100246248A CN201210024624A CN102566218A CN 102566218 A CN102566218 A CN 102566218A CN 2012100246248 A CN2012100246248 A CN 2012100246248A CN 201210024624 A CN201210024624 A CN 201210024624A CN 102566218 A CN102566218 A CN 102566218A
- Authority
- CN
- China
- Prior art keywords
- polarization
- micro display
- light
- polarized light
- display chip
- 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.)
- Pending
Links
Images
Landscapes
- Projection Apparatus (AREA)
Abstract
The invention discloses a dual-chip passive polarized type three-dimensional projection system, which relates to the technical field of image display and can solve the problem to reduce the cost and improve the projection effect. The system comprises a projection light source unit, a polarized light splitting component, a polarized light converging component, micro-display chips and a projection lens, wherein two micro-display chips are provided, which are a first micro-display chip and a second micro-display chip; the projection light source unit is used for emitting a three-primary-color non-polarized light beam to the polarized light spitting component according to time sequence; the three-primary-color non-polarized light beam is split into two single polarized light beams of different polarized states by the polarized light splitting component, then emitted to the light receiving surfaces of the two micro-display chips, respectively; next, the two single polarized light beams are modulated by the two micro-display chips according to three-primary-color signal modulation time sequence and then emitted to the polarized light converging component, respectively; finally, the two single polarized light beams are converged by the polarized light converging component as a single convergent light beam, and then the single convergent light beam is emitted out through the projection lens. The system disclosed by the invention is suitable for three-dimensional image projection.
Description
Technical field
The present invention relates to image display technology, particularly relate to a kind of technology of system of passive polarization type tripleplane of twin-core sheet.
Background technology
Dimension display technologies is the trend of following display technique; And in dimension display technologies; Passive polarization type technology is because its technological high reliability, luminous energy high usage and peripherals; Particularly the direct advantage of grade with low cost of polarization type glasses becomes the mainstream technology in the following dimension display technologies.
Existing projector mainly is made up of projection light source, micro display chip, projection lens; Projection light source is used for the light beam of outgoing three primary colours chronologically to micro display chip; Micro display chip is used to receive picture signal; And the picture signal that receives is pursued frame handle; Is the three primary colours component signal with single frame frequency picture breakdown earlier during processing, three kinds of single primary color light bundles that will be incident upon its sensitive surface successively according to three primary colours component signal matching timing again are modulated to three kinds of single primary colours projected image light beams respectively, and then with three kinds of single primary colours projected image light beams close bundle for behind a branch of projected image light beam through the projection lens projection imaging.
The mode of utilizing existing projector to realize that passive polarization type tripleplane shows is; The polarizing filter through different polarization states respectively with the projected image of two projectors; Form the projected image of two-way different polarization states; Be projected on the screen the projected image of two-way different polarization states is overlapping, spectators then wear special polarizing filter glasses and watch image again, and the right and left eyes eyeglass of this polarizing filter glasses is processed by the polarizing filter of two different polarization states; Therefore spectators' right and left eyes can receive different projected images, thereby in people's brain, forms three-dimensional image.The mode that existing passive polarization type 3-dimensional image shows exists following defective: 1) need realize that 3-dimensional image shows with two projectors, and two projectors need the two-way input, so its implementation cost is higher; 2) calibration of two-way projected image is higher to overlapping difficulty, so its image overlap property is relatively poor; 3) polarized light in order to realize that right and left eyes is required separately need install polarizing filter additional on the emitting light path of two projectors, can cause the projection light efficiency to reduce.
Summary of the invention
To the defective that exists in the above-mentioned prior art, technical matters to be solved by this invention provides that a kind of cost is low, and image overlap property is good, and the system of passive polarization type tripleplane of the high twin-core sheet of projection light efficiency.
In order to solve the problems of the technologies described above, the system of passive polarization type tripleplane of a kind of twin-core sheet provided by the present invention is characterized in that: comprise projection light source unit, polarized light splitting device, polarization splicer spare, micro display chip, projection lens;
Said micro display chip has two, is respectively first micro display chip, second micro display chip;
Said projection light source unit is used for the non-polarized light beam of outgoing three primary colours chronologically to polarized light splitting device; Be incident upon the sensitive surface of two micro display chips respectively become the light beam of the single polarization state of two bundles by the polarized light splitting device beam split after; Inject polarization splicer spare respectively after modulating respectively by the tristimulus signals modulation timing by two micro display chips again, aggregate into single Shu Juhe light beam by polarization splicer spare at last after projection lens penetrates;
In the single polarization state light beam of after the said polarized light splitting device beam split two bundle, the light beam that is incident upon the first micro display chip sensitive surface is the S polarizing beam, and the light beam that is incident upon the second micro display chip sensitive surface is the P polarizing beam.
Further; The S polarizing beam of said polarized light splitting device outgoing is through the sensitive surface that is incident upon first micro display chip behind the light polarization plate of going into of logical S polarization state light, and the P polarizing beam of outgoing is through the sensitive surface that is incident upon second micro display chip behind the light polarization plate of going into of logical P polarization state light.
Further; Outgoing beam after first micro display chip modulation through logical S polarization state light go out light polarization plate after inject polarization splicer spare, the outgoing beam after the modulation of second micro display chip through logical P polarization state light go out light polarization plate after inject polarization splicer spare.
Further, said micro display chip is the LCD micro display chip, or the LCOS micro display chip.
Further, said polarized light splitting device is PBS prism or PBS slide, and said polarization splicer spare is PBS prism or PBS slide.
The system of passive polarization type tripleplane of twin-core sheet provided by the invention; Be incident upon the sensitive surface of two micro display chips respectively after utilizing polarized light splitting device the non-polarized light beam beam split to be become the light beam of the single polarization state of two bundles; Be modulated to the different single polarization state projected image light beam of two bundle polarization states by two micro display chips respectively according to the picture signal that receives separately again; And then after utilizing polarization splicer spare that the single polarization state projected image light beam of two bundles of two micro display chips modulation is aggregated into single bundle tripleplane image polymerization light bundle; Through the projection lens projection imaging; Its implementation cost will be lower than the implementation that existing passive polarization type tripleplane shows, and the calibration of two-way projected image is lower to overlapping difficulty, and its image overlap property is good; Also need not to install additional optical filter on the emitting light path of projected image, its projection light efficiency is also higher.
Description of drawings
Fig. 1 is the structural representation of system of passive polarization type tripleplane of the twin-core sheet of first embodiment of the invention;
Fig. 2 is the structural representation of the projection light source unit in the system of passive polarization type tripleplane of twin-core sheet of first embodiment of the invention;
Fig. 3 is the structural representation of system of passive polarization type tripleplane of the twin-core sheet of second embodiment of the invention;
Fig. 4 is the structural representation of the projection light source unit in the system of passive polarization type tripleplane of twin-core sheet of second embodiment of the invention.
Embodiment
Below in conjunction with description of drawings embodiments of the invention are described in further detail, but present embodiment is not limited to the present invention, every employing analog structure of the present invention and similar variation thereof all should be listed protection scope of the present invention in.
As shown in Figure 1, the system of passive polarization type tripleplane of a kind of twin-core sheet that first embodiment of the invention provided is characterized in that: comprise projection light source unit 11, polarized light splitting device 12, polarization splicer spare 13, micro display chip, projection lens 15;
Said micro display chip has two, is respectively first micro display chip 141, second micro display chip 142;
Said projection light source unit 11 is used for tristimulus signals modulation timing outgoing three primary colours non-polarized light beam by micro display chip to polarized light splitting device 12; Be incident upon the sensitive surface of two micro display chips 141,142 respectively become the light beam of the single polarization state of two bundles by polarized light splitting device 12 beam split after; Inject polarization splicer spare 13 respectively after modulating respectively by the tristimulus signals modulation timing by two micro display chips 141,142 again, aggregate into single Shu Juhe light beam by polarization splicer spare 13 at last after projection lens 15 penetrates;
In the single polarization state light beam of after said polarized light splitting device 12 beam split two bundle, the light beam that is incident upon first micro display chip, 141 sensitive surfaces is the S polarizing beam, and the light beam that is incident upon second micro display chip, 142 sensitive surfaces is the P polarizing beam.
In the first embodiment of the invention; The S polarizing beam of said polarized light splitting device 12 outgoing is through the sensitive surface that is incident upon first micro display chip 141 behind the light polarization plate (not shown) of going into of logical S polarization state light; The P polarizing beam of outgoing is through the sensitive surface that is incident upon second micro display chip 142 behind the light polarization plate (not shown) of going into of logical P polarization state light; Go into the incident beam of two micro display chips of light polarization plate ability purifying, make the incident beam of two micro display chips more be tending towards single polarization state;
Outgoing beam after the modulation of first micro display chip 141 through logical S polarization state light go out the light polarization plate (not shown) after inject polarization splicer spare; Outgoing beam after the modulation of second micro display chip 142 through logical P polarization state light go out the light polarization plate (not shown) after inject polarization splicer spare, go out light polarization plate and can block and absorb through not changing the useless light of polarization state after the micro display chip modulation.
In the first embodiment of the invention, described three primary colours are red, green, blue three primary colours, and said micro display chip is the LCD micro display chip, and said polarized light splitting device is PBS prism or PBS slide, and said polarization splicer spare is PBS prism or PBS slide.
As shown in Figure 2, in the first embodiment of the invention, said projection light source unit comprises a catoptron 104, two dichroic mirrors, and is used for sending respectively three single primary colours light emitting sources of three kinds of primary lights of red, green, blue;
Said three single primary colours light emitting sources are respectively the first primary colours light emitting source 101, the second primary colours light emitting source 102, three-color light-emitting source 103, and said two dichroic mirrors are respectively first dichroic mirror 105, second dichroic mirror 106;
The emergent light of the said first primary colours light emitting source 101 is incident upon catoptron 104, sees through first dichroic mirror 105 by catoptron 104 reflection backs and is incident upon second dichroic mirror 106, again by the 106 reflection outputs of second dichroic mirror;
The emergent light of the said second primary colours light emitting source 102 is incident upon first dichroic mirror 105, reflexes to second dichroic mirror 106 by first dichroic mirror 105, again by the 106 reflection outputs of second dichroic mirror;
The emergent light in said three-color light-emitting source 103 sees through the 106 back outputs of second dichroic mirror;
The outgoing route of the light of said second dichroic mirror 106 reflection outputs and the light of transmission output is consistent.
During first embodiment of the invention work; The two-way picture signal is imported two micro display chips respectively; Every micro display chip is handled by frame the picture signal that receives; Be the three primary colours component signal with single frame frequency picture breakdown earlier during processing; Three kinds of single primary colours light beams that will be incident upon its sensitive surface successively according to three primary colours component signal matching timing again are modulated to the single polarization state projected image light beam of three kinds of single primary colours respectively, and then the single polarization state projected image light beam of three kinds of single primary colours are closed bundle inject polarization splicer spare for the projected image light beam of a branch of single polarization state;
The projected image light beam of the single polarization state of two bundles that polarization splicer spare is injected two micro display chips is incident upon the external screen projection imaging through projection lens after aggregating into the single bundle tripleplane image polymerization light bundle that comprises two kinds of polarization state projected images;
In the first embodiment of the invention, the picture frame frequency of final projected image is 120Hz, and for the projected image that is not glimmered, the Flame Image Process frame frequency of micro display chip needs at least 3 times to final projected image frame frequency, promptly more than or equal to 360Hz.
As shown in Figure 3, the system of passive polarization type tripleplane of a kind of twin-core sheet that second embodiment of the invention provided is characterized in that: comprise projection light source unit 21, polarization spectro converging module, micro display chip, projection lens 25;
Said polarization spectro converging module is built-in with polarized light splitting device 22 and polarization splicer spare 23, and said micro display chip has two, is respectively first micro display chip 241, second micro display chip 242;
Said projection light source unit 21 is used for the polarized light splitting device 22 by tristimulus signals modulation timing outgoing three primary colours non-polarized light beam to the polarization spectro converging module of micro display chip; Become the sensitive surface that is incident upon two micro display chips 241,242 behind the light beam of the single polarization state of two bundles respectively by polarized light splitting device 22 beam split of polarization spectro converging module; Inject the polarization splicer spare 23 of polarization spectro converging module after being modulated respectively by the tristimulus signals modulation timing by two micro display chips 241,242 more respectively, the polarization splicer spare 23 by the polarization spectro converging module aggregates into single Shu Juhe light beam after projection lens 25 penetrates at last;
In the single polarization state light beam of after polarized light splitting device 22 beam split of said polarization spectro converging module two bundle; The light beam that is incident upon first micro display chip, 241 sensitive surfaces is the S polarizing beam, and the light beam that is incident upon second micro display chip, 242 sensitive surfaces is the P polarizing beam.
In the second embodiment of the invention; The S polarizing beam of polarized light splitting device 22 outgoing of said polarization spectro converging module is through the sensitive surface that (not shown) behind the light polarization plate is incident upon first micro display chip 241 of going into of logical S polarization state light; The P polarizing beam of outgoing is through the sensitive surface that is incident upon second micro display chip 242 behind the light polarization plate (not shown) of going into of logical P polarization state light; Go into the incident beam of two micro display chips of light polarization plate ability purifying, make the incident beam of two micro display chips more be tending towards single polarization state;
Outgoing beam after the modulation of first micro display chip 241 is through the polarization splicer spare 23 of injecting the polarization spectro converging module behind the light polarization plate (not shown) that goes out of logical S polarization state light; Outgoing beam after the modulation of second micro display chip 242 goes out light polarization plate and can block and absorb through not changing the useless light of polarization state after the micro display chip modulation through the polarization splicer spare 23 of injecting the polarization spectro converging module behind the light polarization plate (not shown) that goes out of logical P polarization state light.
In the second embodiment of the invention, described three primary colours are red, green, blue three primary colours, and said micro display chip is the LCOS micro display chip, and the polarized light splitting device of said polarization spectro converging module and polarization splicer spare are PBS prism or PBS slide.
As shown in Figure 4; In the second embodiment of the invention; Said projection light source unit comprises three primary colours rotation colour wheel 202; And being used to send the white light source 201 of unpolarized white light, said three primary colours rotation colour wheel 202 rotational symmetry are provided with three look districts 2021,2022,2023, and in three look districts 2021,2022,2023, scribble three kinds of primary colours of red, green, blue respectively;
When said three primary colours rotation colour wheel 202 rotated, the white light of white light source 201 outgoing saw through three look districts 2021,2022,2023 of three primary colours rotation colour wheel 202 successively, promptly forms the three primary colours light of sequential output.
In the second embodiment of the invention; It is the three primary colours class fluorescent paint colour wheel of three primary colours light that said projection light source unit also can adopt by laser excitation; Excite combination with single primary colours with LASER Light Source; Establish three look districts in three primary colours class fluorescent paint colour wheel upper whorl axial symmetry, and in three look districts, scribble the fluorescent paint that can be activated into three kinds of primary colours of red, green, blue respectively respectively;
During the rotation of three primary colours class fluorescent paint colour wheel, single primary colours excite the light with the LASER Light Source outgoing to impact successively in three look districts of three primary colours class fluorescent paint colour wheel, promptly inspire the three primary colours light of sequential output.
During second embodiment of the invention work; The two-way picture signal is imported two micro display chips respectively; Every micro display chip is handled by frame the picture signal that receives; Be the three primary colours component signal with single frame frequency picture breakdown earlier during processing; Three kinds of single primary colours light beams that will be incident upon its sensitive surface successively according to three primary colours component signal matching timing again are modulated to the single polarization state projected image light beam of three kinds of single primary colours respectively, and then the single polarization state projected image light beam of three kinds of single primary colours is closed bundle is injected the polarization spectro converging module for the projected image light beam of a branch of single polarization state polarization splicer spare;
The projected image light beam of the single polarization state of two bundles that the polarization splicer spare of polarization spectro converging module is injected two micro display chips is incident upon the external screen projection imaging through projection lens after aggregating into the single bundle tripleplane image polymerization light bundle that comprises two kinds of polarization state projected images;
In the second embodiment of the invention, the picture frame frequency of final projected image is 120Hz, and for the projected image that is not glimmered, the Flame Image Process frame frequency of micro display chip needs at least 3 times to final projected image frame frequency, promptly more than or equal to 360Hz.
Claims (5)
1. the system of passive polarization type tripleplane of a twin-core sheet is characterized in that: comprise projection light source unit, polarized light splitting device, polarization splicer spare, micro display chip, projection lens;
Said micro display chip has two, is respectively first micro display chip, second micro display chip;
Said projection light source unit is used for the non-polarized light beam of outgoing three primary colours chronologically to polarized light splitting device; Be incident upon the sensitive surface of two micro display chips respectively become the light beam of the single polarization state of two bundles by the polarized light splitting device beam split after; Inject polarization splicer spare respectively after modulating respectively by the tristimulus signals modulation timing by two micro display chips again, aggregate into single Shu Juhe light beam by polarization splicer spare at last after projection lens penetrates;
In the single polarization state light beam of after the said polarized light splitting device beam split two bundle, the light beam that is incident upon the first micro display chip sensitive surface is the S polarizing beam, and the light beam that is incident upon the second micro display chip sensitive surface is the P polarizing beam.
2. the system of passive polarization type tripleplane of twin-core sheet according to claim 1; It is characterized in that: the S polarizing beam of said polarized light splitting device outgoing is through the sensitive surface that is incident upon first micro display chip behind the light polarization plate of going into of logical S polarization state light, and the P polarizing beam of outgoing is through the sensitive surface that is incident upon second micro display chip behind the light polarization plate of going into of logical P polarization state light.
3. the system of passive polarization type tripleplane of twin-core sheet according to claim 1; It is characterized in that: the outgoing beam after first micro display chip modulation through logical S polarization state light go out light polarization plate after inject polarization splicer spare, the outgoing beam after the modulation of second micro display chip through logical P polarization state light go out light polarization plate after inject polarization splicer spare.
4. the system of passive polarization type tripleplane of twin-core sheet according to claim 1, it is characterized in that: said micro display chip is the LCD micro display chip, or the LCOS micro display chip.
5. the system of passive polarization type tripleplane of twin-core sheet according to claim 1, it is characterized in that: said polarized light splitting device is PBS prism or PBS slide, said polarization splicer spare is PBS prism or PBS slide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100246248A CN102566218A (en) | 2012-02-03 | 2012-02-03 | Dual-chip passive polarized type three-dimensional projection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100246248A CN102566218A (en) | 2012-02-03 | 2012-02-03 | Dual-chip passive polarized type three-dimensional projection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102566218A true CN102566218A (en) | 2012-07-11 |
Family
ID=46411968
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100246248A Pending CN102566218A (en) | 2012-02-03 | 2012-02-03 | Dual-chip passive polarized type three-dimensional projection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102566218A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104035259A (en) * | 2014-07-02 | 2014-09-10 | 中国科学院长春光学精密机械与物理研究所 | Method for improving nematic liquid crystal optic shutter transmittance |
| CN105988270A (en) * | 2015-02-10 | 2016-10-05 | 深圳市绎立锐光科技开发有限公司 | Silicon-based liquid crystal projection system used for 3D image display |
| WO2018113424A1 (en) * | 2016-12-22 | 2018-06-28 | 深圳市光峰光电技术有限公司 | Light source system, automotive illuminating system and control method |
| CN108345160A (en) * | 2017-01-22 | 2018-07-31 | 深圳市光峰光电技术有限公司 | A kind of projection display system |
| CN108957921A (en) * | 2017-05-17 | 2018-12-07 | 深圳市光峰光电技术有限公司 | Excitating light strength control system and optical projection system |
| CN109696750A (en) * | 2019-03-13 | 2019-04-30 | 中国科学技术大学 | Stereo projection display apparatus and stereo projection display method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101377571A (en) * | 2007-08-28 | 2009-03-04 | 鸿富锦精密工业（深圳）有限公司 | Stereo projection optical system |
| US20100171928A1 (en) * | 2009-01-06 | 2010-07-08 | Herb He Huang | Single-imager projection engine assembly |
| CN201637937U (en) * | 2010-01-21 | 2010-11-17 | 广景科技有限公司 | Novel three-dimensional projection device |
| CN201812130U (en) * | 2010-10-15 | 2011-04-27 | 天津峰景光电科技有限公司 | Three-dimensional projector module |
| CN202453633U (en) * | 2012-02-03 | 2012-09-26 | 上海广擎光电科技有限公司 | Double-chip passive polarization type 3-D projection system |
-
2012
- 2012-02-03 CN CN2012100246248A patent/CN102566218A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101377571A (en) * | 2007-08-28 | 2009-03-04 | 鸿富锦精密工业（深圳）有限公司 | Stereo projection optical system |
| US20100171928A1 (en) * | 2009-01-06 | 2010-07-08 | Herb He Huang | Single-imager projection engine assembly |
| CN201637937U (en) * | 2010-01-21 | 2010-11-17 | 广景科技有限公司 | Novel three-dimensional projection device |
| CN201812130U (en) * | 2010-10-15 | 2011-04-27 | 天津峰景光电科技有限公司 | Three-dimensional projector module |
| CN202453633U (en) * | 2012-02-03 | 2012-09-26 | 上海广擎光电科技有限公司 | Double-chip passive polarization type 3-D projection system |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104035259A (en) * | 2014-07-02 | 2014-09-10 | 中国科学院长春光学精密机械与物理研究所 | Method for improving nematic liquid crystal optic shutter transmittance |
| CN105988270A (en) * | 2015-02-10 | 2016-10-05 | 深圳市绎立锐光科技开发有限公司 | Silicon-based liquid crystal projection system used for 3D image display |
| WO2018113424A1 (en) * | 2016-12-22 | 2018-06-28 | 深圳市光峰光电技术有限公司 | Light source system, automotive illuminating system and control method |
| CN108613110A (en) * | 2016-12-22 | 2018-10-02 | 深圳市绎立锐光科技开发有限公司 | A kind of light-source system, automobile lighting system and control method |
| CN108613110B (en) * | 2016-12-22 | 2020-06-02 | 深圳市绎立锐光科技开发有限公司 | Light source system, automobile lighting system and control method |
| CN108345160A (en) * | 2017-01-22 | 2018-07-31 | 深圳市光峰光电技术有限公司 | A kind of projection display system |
| CN108345160B (en) * | 2017-01-22 | 2020-11-17 | 深圳光峰科技股份有限公司 | Projection display system |
| CN108957921A (en) * | 2017-05-17 | 2018-12-07 | 深圳市光峰光电技术有限公司 | Excitating light strength control system and optical projection system |
| CN108957921B (en) * | 2017-05-17 | 2021-05-04 | 深圳光峰科技股份有限公司 | Excitation light intensity control system and projection system |
| CN109696750A (en) * | 2019-03-13 | 2019-04-30 | 中国科学技术大学 | Stereo projection display apparatus and stereo projection display method |
| CN109696750B (en) * | 2019-03-13 | 2024-03-15 | 合肥全色光显科技有限公司 | Stereoscopic projection display device and stereoscopic projection display method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2771734B1 (en) | Tilted dichroic polarizing beamsplitter | |
| KR101092576B1 (en) | Liquid crystal display projection system, light engine arrangement and method for generating pictures that can be viewed stereoscopically | |
| EP1955107B1 (en) | Light collectors for projection systems | |
| KR100879407B1 (en) | Light recovery for projection displays | |
| US7878656B2 (en) | Stereo projection optical system | |
| CN102566218A (en) | Dual-chip passive polarized type three-dimensional projection system | |
| CN101738737B (en) | Projection system used for presenting stereoscopic image and method thereof | |
| CN202453633U (en) | Double-chip passive polarization type 3-D projection system | |
| CN103149780A (en) | Projection apparatus | |
| CN101408675A (en) | Stereo projection optical system | |
| CN103676423A (en) | Projection apparatus | |
| US20090051878A1 (en) | Stereo projection optical system | |
| CN101271261A (en) | Single lens stereographic projection device and optical filtering color block | |
| US20180180979A1 (en) | Projection device and projection system | |
| CN102520575A (en) | Three-dimensional projection display system based on liquid crystal polarization rotation | |
| CN1847971B (en) | Projection LCD | |
| CN101398537A (en) | Stereo projection optical system | |
| US9213225B2 (en) | Polarization converter for use in a projector apparatus and projector apparatus comprising the polarization converter | |
| US20050046759A1 (en) | Brighter light engine architecture for a liquid crystal display projection system | |
| CN102402016A (en) | Silica-based liquid crystal stereo projection light machine | |
| CN100568087C (en) | The led light source illuminator of miniature type LCOS projector | |
| EP1331827A1 (en) | Brighter light engine architecture | |
| CN101393322A (en) | Stereo projection optical system | |
| CN102197644A (en) | Image projection system for reducing spectral interference | |
| CN217767180U (en) | 3D projection device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| ASS | Succession or assignment of patent right |
Owner name: HUZHOU QINGWEI ELECTRONIC TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: SHANGHAI SINOVA TECHNOLOGY CO., LTD. Effective date: 20130220 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 200050 CHANGNING, SHANGHAI TO: 313000 HUZHOU, ZHEJIANG PROVINCE |
|
| TA01 | Transfer of patent application right |
Effective date of registration: 20130220 Address after: 313000, Zhejiang, Huzhou, eight mile town, Wuxing science and Technology Pioneer Park, building 3, 2 Applicant after: Huzhou Qingwei Electronic Technology Co., Ltd. Address before: 200050, B, building 357, 509 Zhao Lu, Changning District, Shanghai Applicant before: Shanghai Sinova Technology Co., Ltd. |
|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20120711 |