CN103529636A - 3D film and television system and 3D projection method - Google Patents
3D film and television system and 3D projection method Download PDFInfo
- Publication number
- CN103529636A CN103529636A CN201310522127.5A CN201310522127A CN103529636A CN 103529636 A CN103529636 A CN 103529636A CN 201310522127 A CN201310522127 A CN 201310522127A CN 103529636 A CN103529636 A CN 103529636A
- Authority
- CN
- China
- Prior art keywords
- catoptron
- liquid crystal
- wave plate
- light
- crystal wave
- 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
- Liquid Crystal (AREA)
Abstract
The invention provides a 3D film and television system which comprises a reflection type polaroid and a first reflection mirror, wherein the reflection type polaroid is used for splitting incident projection light into reflection light and transmission light, and the first reflection mirror which is used for reflecting the transmission light to a second reflection mirror in a transmission direction of the reflection type polaroid; the second reflection mirror which reflects the transmission light reflected by the first reflection mirror to a first liquid crystal wave plate set is arranged in a reflection direction of the first reflection mirror; a third reflection mirror which is used for reflecting the reflection light to a second liquid crystal wave plate set is arranged in a reflection direction of the reflection type polaroid; the first liquid crystal wave plate set and the second liquid crystal wave plate set are located in the same plane; and a light ray path that the transmission light reaches the first liquid crystal wave plate set is equal to a light ray path that the reflection light reaches the second liquid crystal wave plate set, so that an image which is presented on a screen by the reflection light and an image which is presented on the screen by projection light are overlapped, light reaching the screen is increased, the specific value of the light reaching the screen to incident projection light is larger, the images presented on the screen are bright and clear, and the visual effect is better.
Description
Technical field
The present invention relates to optical field, in particular to 3D video system and 3D video display method.
Background technology
Along with the development of 3D video display, the requirement that spectators and cinemas present effect to 3D video display is also improving constantly, and need to use 3D video system, to meet, watches needs.
In correlation technique, as shown in Figure 1,3D video system comprises transmission-type polaroid 1 and the first liquid crystal wave plate group 2; The transmission direction of transmission-type polaroid 1 is provided with the first liquid crystal wave plate group.During projection, the projected light of projector arrives the first liquid crystal wave plate group 2 after 1 transmission of transmission-type polaroid, becomes rotatory polarization and arrive screen after the first liquid crystal wave plate group 2 transmissions.Spectators watch by specific glasses, and the eyeglass of glasses is the mutually perpendicular polaroid of a pair of direction of shaking, and human eye is watched the optical image in screen by these glasses, and two eyes are seen respectively independently image, will produce three-dimensional image effect.
Such 3D video system, reflection and transmission due to the projected light of projector, have been there is during by transmission-type polaroid 1, only have the light of transmission to arrive the first liquid crystal wave plate group 2, after the first liquid crystal wave plate group 2 transmissions, arrive screen again, arriving the light of screen and the projected light of projector compares, ratio is less, causes the image frame presenting in screen dim fuzzy, and visual effect is poor.
Summary of the invention
The object of the present invention is to provide 3D video system and 3D projecting method, to solve the above problems.
3D video system is provided in an embodiment of the present invention, has comprised: for the projected light of incident being divided into reflective polaroid, the first catoptron, the second catoptron, the 3rd catoptron, the first liquid crystal wave plate group and the second liquid crystal wave plate group of reflected light and transmitted light;
The transmission direction of described reflective polaroid is provided with for described transmitted light being reflexed to described first catoptron of described the second catoptron;
The reflection direction of described the first catoptron is provided with described the second catoptron that the described transmitted light of described the first catoptron reflection is reflexed to described the first liquid crystal wave plate group;
The reflection direction of described reflective polaroid is provided with for described reflected light being reflexed to described the 3rd catoptron of described the second liquid crystal wave plate group;
Described the first liquid crystal wave plate group and described the second liquid crystal wave plate group are positioned at same plane;
And described transmitted light arrives the opticpath of described the first liquid crystal wave plate group, the opticpath that arrives described the second liquid crystal wave plate group with described reflected light is equal in length.
The 3D video system that the embodiment of the present invention provides, being provided with the first liquid crystal wave plate group with the transmission direction of transmission-type polaroid of the prior art compares, the transmitted light of reflection type polaroid transmission arrives the length of the opticpath of the first liquid crystal wave plate group, arrive opticpath equal in length of the second liquid crystal wave plate group with the reflected light of reflection type polaroid reflection, thereby the path that makes reflected light arrive screen equates with the path that projection light arrives screen, the image that image that reflected light presents in screen presents in screen with projection light is overlapped, increased the light that arrives screen, make to arrive the light of screen and the projection light of projector is compared, ratio is larger, make the image frame presenting in screen become clear clear, visual effect is better.
The 3D projecting method that a kind of 3D video system as described in above-described embodiment is also provided in an embodiment of the present invention, comprising:
Use reflective polaroid that the projected light of incident is divided into reflected light and transmitted light;
By the first catoptron, described transmitted light is reflexed to the second catoptron;
By the second catoptron, the described transmitted light through described the first catoptron reflection is reflexed to the first liquid crystal wave plate group;
By the 3rd catoptron, described reflected light is reflexed to the second liquid crystal wave plate group;
The opticpath that makes described transmitted light arrive described the first liquid crystal wave plate group process equates with the opticpath that described reflected light arrives described the second liquid crystal wave plate group process.
The 3D projecting method that the embodiment of the present invention provides, compare with the first liquid crystal wave plate group that is provided with in the transmission direction of transmission-type polaroid of the prior art, the projected light of incident is divided into reflected light and transmitted light through reflective polaroid, transmitted light arrives the path of the first liquid crystal wave plate group, the path that arrives the second liquid crystal wave plate group with reflected light equates, thereby the path that makes reflected light arrive screen equates with the path that transmitted light arrives screen, and reflected light overlaps in screen with transmitted light, increased the light that arrives screen, make to arrive the light of screen and the projection light of projector is compared, ratio is larger, make the image frame presenting in screen become clear clear, visual effect is better.
Accompanying drawing explanation
Fig. 1 shows the schematic diagram of the 3D video system in correlation technique of the present invention;
Fig. 2 shows the schematic diagram of a kind of embodiment of 3D video system of the present invention.
Reference numeral: 1-transmission-type polaroid; 2-the first liquid crystal wave plate group; 3-reflective polaroid; 4-the first catoptron; 5-the second catoptron; 6-the 3rd catoptron; 7-the second liquid crystal wave plate group; 8-shell.
Embodiment
Below by specific embodiment, also by reference to the accompanying drawings the present invention is described in further detail.
A video system, as shown in Figure 2, comprising: for the projected light of incident being divided into reflective polaroid 3, the first catoptron 4, the second catoptron 5, the 3rd catoptron 6, the first liquid crystal wave plate group 2 and the second liquid crystal wave plate group 7 of reflected light and transmitted light; The transmission direction of reflective polaroid 3 is provided with for transmitted light being reflexed to the first catoptron 4 of the second catoptron 5; The reflection direction of the first catoptron 4 is provided with the second catoptron 5 that the transmitted light of the first catoptron 4 reflections is reflexed to the first liquid crystal wave plate group 2; The reflection direction of reflective polaroid 3 is provided with for reflected light being reflexed to the 3rd catoptron 6 of the second liquid crystal wave plate group 7; The first liquid crystal wave plate group 2 and the second liquid crystal wave plate group 7 are positioned at same plane; And transmitted light arrives the opticpath of the first liquid crystal wave plate group 2, the opticpath that arrives the second liquid crystal wave plate group 7 with reflected light is equal in length.
Wherein, projected light is rotatory polarization through the light of reflective polaroid 3 reflections and the light of transmission, but polarization state is different, during use, should make the second liquid crystal wave plate group 7 contrary with the work schedule of the first liquid crystal wave plate group 2, consistent with the polarization polarity of the light transmiting through the first liquid crystal wave plate group 2 with the light that guarantees to transmit through the second liquid crystal wave plate group 7.
The 3D video system that the embodiment of the present invention provides, being provided with the first liquid crystal wave plate group 2 with the transmission direction of transmission-type polaroid 1 of the prior art compares, the reflected light of reflection type polaroid 3 reflections arrives the length of the opticpath of the second liquid crystal wave plate group 7, arrive opticpath equal in length of the first liquid crystal wave plate group 2 with the transmitted light of reflection type polaroid 3 transmissions, thereby the path that makes reflected light arrive screen equates with the path that projection light arrives screen, the image that image that reflected light presents in screen presents in screen with projection light is overlapped, increased the light that arrives screen, make to arrive the light of screen and the projection light of projector is compared, ratio is larger, make the image frame presenting in screen become clear clear, visual effect is better.
In above-mentioned 3D video system, also comprise: for the protection of the shell 8 of establishing reflective polaroid 3, the first catoptron 4, the second catoptron 5, the 3rd catoptron 6, the first liquid crystal wave plate group 2 and the second liquid crystal wave plate group 7 in the inner.
By shell 8 is set; can protect reflective polaroid 3, the first catoptron 4, the second catoptron 5, the 3rd catoptron 6, the first liquid crystal wave plate group 2 and the second liquid crystal wave plate group 7 of establishing in the inner; and by 3D video system integrated setting, conveniently transport and circulate.
In above-mentioned 3D video system, the 3rd catoptron 6 is parallel with reflective polaroid 3.
Wherein, for specific screen, the distance between the 3rd catoptron 6 and reflective polaroid 3, the position that arrives screen to path and the light of light reflection is relevant.
It is parallel with reflective polaroid 3 by the 3rd catoptron 6 is set, can be by adjusting the position of the first catoptron 4 and the second catoptron 5, make to enter the reflection of reflective polaroid 3 process reflective polaroid 3, arrive the length of the opticpath of the second liquid crystal wave plate group 7, with the transmission that enters reflective polaroid 3 process reflective polaroid 3, arrive the first catoptron 4, and arrive the second catoptron 5 through the reflection of the first catoptron 4, and through the second catoptron 5, arrive opticpath equal in length of the first liquid crystal wave plate groups 2, simplify the debugging step of 3D video system.
In above-mentioned 3D video system, the first catoptron 4 is parallel with the second catoptron 5.
Wherein, for specific screen, the position that the distance between the first catoptron 4 and the second catoptron 5 and the path of light reflection and light arrive screen is relevant.
It is parallel with the second catoptron 5 by the first catoptron 4 is set, can be by adjusting the position of the 3rd catoptron 6 and the first catoptron 4 and the second catoptron 5 with respect to the angle of reflective polaroid 3, make to enter reflective polaroid 3, and the reflection of process reflective polaroid 3, arrive the length of the opticpath of the second liquid crystal wave plate group 7, with enter reflective polaroid 3, and the transmission of process reflective polaroid 3, arrive the first catoptron 4, and arrive the second catoptron 5 through the reflection of the first catoptron 4, and through the second catoptron 5, arrive opticpath equal in length of the first liquid crystal wave plate groups 2, simplify the debugging step of 3D video system.
In above-mentioned 3D video system, reflective polaroid 3 is 45 ° with the angle of horizontal direction.
By reflective polaroid 3 and the angle of horizontal direction are made as to 45 °, when the central shaft of projector throw light is during with horizontal direction parallel, reflective polaroid 3 and horizontal direction angle are 45 degree.The incident angle that has so just guaranteed the incident ray of horizontal direction is 45 degree, and extinction ratio is met design requirement, and the 3D effect of projected light is better.
A 3D projecting method for 3D video system as described in above-described embodiment, comprising: use reflective polaroid 3 that the projected light of incident is divided into reflected light and transmitted light; By the first catoptron 4, transmitted light is reflexed to the second catoptron 5; By the second catoptron 5, the transmitted light through the first catoptron 4 reflections is reflexed to the first liquid crystal wave plate group 2; By the 3rd catoptron 6, reflected light is reflexed to the second liquid crystal wave plate group 7; The opticpath that makes reflected light arrive the second liquid crystal wave plate group 7 processes equates with the opticpath that transmitted light arrives the first liquid crystal wave plate group 2 processes.
Wherein, reflective polaroid 3 reflects with the light transmiting and is rotatory polarization, but polarization state is different, during use, should make the second liquid crystal wave plate group 7 contrary with the work schedule of the first liquid crystal wave plate group 2, consistent with the polarization polarity of the light transmiting through the first liquid crystal wave plate group 2 with the light that guarantees to transmit through the second liquid crystal wave plate group 7.
The 3D projecting method that the embodiment of the present invention provides, compare with the second liquid crystal wave plate group 7 that is provided with in the transmission direction of transmission-type polaroid 1 of the prior art, use reflective polaroid 3 that the projected light of incident is divided into reflected light and transmitted light, reflected light arrives the path of the second liquid crystal wave plate group 7, the path that arrives the first liquid crystal wave plate group 2 with transmitted light equates, thereby the path that makes reflected light arrive screen equates with the path that transmitted light arrives screen, and reflected light overlaps in screen with transmitted light, increase the light that arrives screen, make to arrive the light of screen and the projection light of projector is compared, ratio is larger, make the image frame presenting in screen become clear clear, visual effect is better.
In above-mentioned 3D projecting method, after the described transmitted light through described the first catoptron 4 reflections being reflexed to the first liquid crystal wave plate group 2 by described the second catoptron 5, before reflected light being reflexed to the second liquid crystal wave plate group 7 by the 3rd catoptron 6, also comprise: make the 3rd catoptron 6 parallel with reflective polaroid 3.
Wherein, for specific screen, when the distance between the 3rd catoptron 6 and reflective polaroid 3 is set, need to consider the path of light transmition and the position that light arrives screen.
It is parallel with reflective polaroid 3 by the 3rd catoptron 6 is set, can make to enter reflective polaroid 3 by adjusting the position of the first catoptron 4 and the second catoptron 5, and the reflection of process reflective polaroid 3, arrive the length of the opticpath of the second liquid crystal wave plate group 7, with enter reflective polaroid 3, and the transmission of process reflective polaroid 3, arrive the first catoptron 4, and arrive the second catoptron 5 through the reflection of the first catoptron 4, and through the second catoptron 5, arrive opticpath equal in length of the first liquid crystal wave plate groups 2, simplify the debugging step of 3D video system.
In above-mentioned 3D projecting method, after use reflective polaroid 3 is divided into reflected light and transmitted light by the projected light of incident, before described transmitted light being reflexed to the second catoptron 5 by the first catoptron 4, also comprise: make the first catoptron 4 parallel with the second catoptron 5.
Wherein, for specific screen, the position that the distance between the first catoptron 4 and the second catoptron 5 and the path of light reflection and light arrive screen is relevant.
It is parallel with the second catoptron 5 by the first catoptron 4 is set, can be by adjusting the position of the 3rd catoptron 6 and the first catoptron 4 and the second catoptron 5 with respect to the angle of reflective polaroid 3, make to enter reflective polaroid 3, and the reflection of process reflective polaroid 3, arrive the length of the opticpath of the second liquid crystal wave plate group 7, with enter reflective polaroid 3, and the transmission of process reflective polaroid 3, arrive the first catoptron 4, and arrive the second catoptron 5 through the reflection of the first catoptron 4, and through the second catoptron 5, arrive opticpath equal in length of the first liquid crystal wave plate groups 2, simplify the debugging step of 3D video system.
In above-mentioned 3D projecting method, after the transmitted light through the first catoptron 4 reflections being reflexed to the first liquid crystal wave plate group 2 by the second catoptron 5, before reflected light being reflexed to the second liquid crystal wave plate group 7 by the 3rd catoptron 6, also comprise: make the second liquid crystal wave plate group 7 and the first liquid crystal wave plate group 2 be positioned at same perpendicular.
By making the second liquid crystal wave plate group 7 and the first liquid crystal wave plate group 2 be positioned at same perpendicular, the opticpath by the first liquid crystal wave plate group 2 arrival screens equates with the opticpath that arrives screens by the second liquid crystal wave plate group 7, only need to adjust the 3rd catoptron 6, the relative position of the first catoptron 4 and the second catoptron 5, make the light of reflection type polaroid 3 reflections from the path of reflective polaroid 3 to first liquid crystal wave plate groups 2, equate from the path of reflective polaroid 3 to second liquid crystal wave plate groups 7 with the light of reflection type polaroid 3 transmissions, can complete the debugging of 3D optical projection system, simplified debugging step.
In above-mentioned 3D projecting method, before use reflective polaroid 3 is divided into reflected light and transmitted light by the projected light of incident, also comprise: making reflective polaroid 3 and the angle of horizontal direction is 45 °.
When the central shaft of projector throw light and horizontal direction parallel, reflective polaroid 3 is 45 degree with horizontal direction angle.The incident angle that has so just guaranteed the incident ray of horizontal direction is 45 degree, and extinction ratio is met design requirement, and the 3D effect of projected light is better.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. a 3D video system, is characterized in that, comprising: for the projected light of incident being divided into reflective polaroid, the first catoptron, the second catoptron, the 3rd catoptron, the first liquid crystal wave plate group and the second liquid crystal wave plate group of reflected light and transmitted light;
The transmission direction of described reflective polaroid is provided with for described transmitted light being reflexed to described first catoptron of described the second catoptron;
The reflection direction of described the first catoptron is provided with described the second catoptron that the described transmitted light of described the first catoptron reflection is reflexed to described the first liquid crystal wave plate group;
The reflection direction of described reflective polaroid is provided with for described reflected light being reflexed to described the 3rd catoptron of described the second liquid crystal wave plate group;
Described the first liquid crystal wave plate group and described the second liquid crystal wave plate group are positioned at same plane;
And described transmitted light arrives the opticpath of described the first liquid crystal wave plate group, the opticpath that arrives described the second liquid crystal wave plate group with described reflected light is equal in length.
2. 3D video system according to claim 1; it is characterized in that, also comprise: for the protection of the shell of establishing described reflective polaroid, the first catoptron, the second catoptron, the 3rd catoptron, the first liquid crystal wave plate group and the second liquid crystal wave plate group in the inner.
3. 3D video system according to claim 1, is characterized in that, described the 3rd catoptron is parallel with described reflective polaroid.
4. 3D video system according to claim 1, is characterized in that, described the first catoptron is parallel with described the second catoptron.
5. 3D video system according to claim 1, is characterized in that, the angle of described reflective polaroid and horizontal direction is 45 °.
6. a 3D projecting method for the 3D video system as described in any one in claim 1～5, is characterized in that, comprising:
Use reflective polaroid that the projected light of incident is divided into reflected light and transmitted light;
By the first catoptron, described transmitted light is reflexed to the second catoptron;
By described the second catoptron, the described transmitted light through described the first catoptron reflection is reflexed to the first liquid crystal wave plate group;
By the 3rd catoptron, described reflected light is reflexed to the second liquid crystal wave plate group;
The opticpath that makes described transmitted light arrive described the first liquid crystal wave plate group process equates with the opticpath that described reflected light arrives described the second liquid crystal wave plate group process.
7. 3D projecting method according to claim 6, it is characterized in that, after the described transmitted light through described the first catoptron reflection being reflexed to the first liquid crystal wave plate group by described the second catoptron, described by the 3rd catoptron, described reflected light is reflexed to the second liquid crystal wave plate group before, also comprise: make described the 3rd catoptron parallel with described reflective polaroid.
8. 3D projecting method according to claim 6, it is characterized in that, after use reflective polaroid is divided into reflected light and transmitted light by the projected light of incident, before described transmitted light being reflexed to the second catoptron by the first catoptron, also comprise: make described the first catoptron parallel with described the second catoptron.
9. 3D projecting method according to claim 6, it is characterized in that, after the described transmitted light through described the first catoptron reflection being reflexed to the first liquid crystal wave plate group by described the second catoptron, before described reflected light being reflexed to the second liquid crystal wave plate group by the 3rd catoptron, also comprise: make described the second liquid crystal wave plate group and described the first liquid crystal wave plate group be positioned at same perpendicular.
10. 3D projecting method according to claim 6, is characterized in that, before described use reflective polaroid is divided into reflected light and transmitted light by the projected light of incident, also comprises: the angle that makes described reflective polaroid and horizontal direction is 45 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310522127.5A CN103529636A (en) | 2013-10-29 | 2013-10-29 | 3D film and television system and 3D projection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310522127.5A CN103529636A (en) | 2013-10-29 | 2013-10-29 | 3D film and television system and 3D projection method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103529636A true CN103529636A (en) | 2014-01-22 |
Family
ID=49931754
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310522127.5A Pending CN103529636A (en) | 2013-10-29 | 2013-10-29 | 3D film and television system and 3D projection method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103529636A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0743658A (en) * | 1993-07-26 | 1995-02-14 | Seiko Epson Corp | Projection display device |
| US20080143965A1 (en) * | 2006-10-18 | 2008-06-19 | Real D | Combining P and S rays for bright stereoscopic projection |
| US20090059172A1 (en) * | 2007-08-28 | 2009-03-05 | Hon Hai Precision Industry Co., Ltd. | Stereo projection optical system |
| CN103217863A (en) * | 2013-04-11 | 2013-07-24 | 雷欧尼斯（北京）信息技术有限公司 | Polarization three-dimensional (3D) system based on polarized light recycling |
-
2013
- 2013-10-29 CN CN201310522127.5A patent/CN103529636A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0743658A (en) * | 1993-07-26 | 1995-02-14 | Seiko Epson Corp | Projection display device |
| US20080143965A1 (en) * | 2006-10-18 | 2008-06-19 | Real D | Combining P and S rays for bright stereoscopic projection |
| US20090059172A1 (en) * | 2007-08-28 | 2009-03-05 | Hon Hai Precision Industry Co., Ltd. | Stereo projection optical system |
| CN103217863A (en) * | 2013-04-11 | 2013-07-24 | 雷欧尼斯（北京）信息技术有限公司 | Polarization three-dimensional (3D) system based on polarized light recycling |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101738737B (en) | Projection system used for presenting stereoscopic image and method thereof | |
| CN104714303B (en) | A kind of free hand drawing image source binocular near-eye display device | |
| CN103529637A (en) | 3D (three dimensional) film and television system and 3D projection method | |
| US11448864B2 (en) | Optical system and image enlargement device | |
| CN106226909A (en) | Display device and wear-type display system | |
| US11110861B2 (en) | Display system and electronic mirror system including the display system | |
| CN103399409A (en) | Three-dimensional projection display device | |
| CN103616772A (en) | 3D movie and television system and 3D projection method | |
| CN107466373A (en) | Wearable display device and UAS | |
| US20190020868A1 (en) | Device, system and method for stereoscopic display | |
| CN204166196U (en) | The nearly eye display optical system of single screen eyes | |
| CN203941346U (en) | A kind of 3D display system | |
| US9423674B1 (en) | System and method for providing image encoding projection using an apodized liquid crystal display pixel | |
| CN104635341B (en) | A kind of free hand drawing image source binocular near-eye display device | |
| US9612520B2 (en) | Polarized projection device and polarized projection system using the same | |
| US20210255460A1 (en) | Display device, display method thereof, and display system | |
| CN106292139A (en) | Rear-projection display system | |
| CN103529636A (en) | 3D film and television system and 3D projection method | |
| CN103837989A (en) | Head-mounted imaging device and head-mounted intelligent terminal | |
| KR20150121545A (en) | Reflection-type three-dimensional screen | |
| CN203745730U (en) | Head-mounted video device and head-mounted intelligent terminal | |
| US20110141250A1 (en) | Stereo-image display apparatus | |
| TW202229974A (en) | Symmetry optical path 3D head-up display capable of still maintaining the same image optical paths of the first eye and the second eye at a longer virtual image projecting distance or a higher magnification | |
| CN114815236A (en) | Symmetrical light path 3D head-up display | |
| US20110141249A1 (en) | Stereo-image display apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140122 |
|
| RJ01 | Rejection of invention patent application after publication |