CN102087420A - Stereo projecting equipment - Google Patents
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- CN102087420A CN102087420A CN2010105643413A CN201010564341A CN102087420A CN 102087420 A CN102087420 A CN 102087420A CN 2010105643413 A CN2010105643413 A CN 2010105643413A CN 201010564341 A CN201010564341 A CN 201010564341A CN 102087420 A CN102087420 A CN 102087420A
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Abstract
The invention provides stereo projecting equipment which comprises a light source assembly, a first polarizing beam splitter, a second polarizing beam splitter, a third polarizing beam splitter, a fourth polarizing beam splitter, a first polarizing converter, a second polarizing converter, a first reflection type electrooptical modulator, a second reflection type electrooptical modulator and a projecting lens, wherein light emitted by the light source assembly is split into a first polarizing light beam and a second polarizing light beam by the first polarizing beam splitter, and the polarizing states of the two polarizing light beams are mutually vertical; the first polarizing light beam is reflected to the second polarizing light beam splitter by the first polarizing beam splitter; and the second polarizing light beam is sequentially transmitted through the first polarizing beam splitter and the second polarizing beam splitter. The invention has the advantages that a practical stereo projecting equipment scheme with two reflection type electrooptical modulators is proposed, and light split paths are symmetrical, thus, a binocular parallax projecting image with balanced brightness and contrast is obtained easily; and more excellent micro stereo projecting display is realized under the level of the prior art.
Description
Technical field
The present invention relates to a kind of stereoprojection equipment, relate in particular to a kind of miniature stereoprojection equipment.
Background technology
Now, reflective type silicon-based liquid crystal (Liquid Crystal On Silicon, LCOS) maturation of technology, make projection display technique quantum jump occur, the further reduction of cost, the appearance of micro projector, the entertainment applications that makes projector market invest household person gradually from commercial affairs, education sector.The prosperity in three-dimensional film market, the market of further having widened three-dimensional home theater.Stereotelevision cost height, portable poor, miniature stereoprojection is the development trend of following three-dimensional home theater.
Core based on the stereo projection technology of polarized light is the polarization spectro technology, with light splitting device incident beam is separated into the orthogonal two-way illuminating bundle in polarization direction, be modulated into the light beam that has image information through display device, spectators put on the polarization direction glasses corresponding with the image beam polarization direction can see stereo-picture.Two dimension only shows that brightness to passage, contrast etc. have requirement, and in the binary channels stereo display, not only the brightness of each passage, contrast etc. need satisfy display requirement, and crosstalking between the two paths, consistance all need to reach requirement.The stereoprojection ray machine of shared one road projection lens, the spatial arrangement of two passages preferably has certain symmetry, can probably guarantee equivalent optical path, and the Design and Machining of projection lens is just carried out than being easier to.If the spatial arrangement of two passages is asymmetric, the whole drop shadow effect of stereoprojection equipment will be had a strong impact on.
Summary of the invention
Technical matters to be solved by this invention provides a kind of and existing stereoprojection equipment and compares the stereoprojection equipment with better drop shadow effect.
A kind of stereoprojection equipment comprises: light source assembly, first polarization beam apparatus, second polarization beam apparatus, the 3rd polarization beam apparatus, the 4th polarization beam apparatus, first polarization converter, second polarization converter, the first reflective electrooptic modulator, second reflective electrooptic modulator and the projection lens;
Described light source assembly is meant can the outgoing natural light or the light source of the illuminating bundle of circularly polarized light and additional beam shaping, the optical path component uniformly of being used for.
It is orthogonal that described first polarization beam apparatus, second polarization beam apparatus, the 3rd polarization beam apparatus and the 4th polarization beam apparatus can be separated into polarization state with incident beam respectively, and the also orthogonal two-beam of exit direction, and be " rice " font placement composition polarization spectroscope group mutually; The light that described light source assembly sends is divided into orthogonal first light beam of polarization state and second light beam by described first polarization beam apparatus;
Described first light beam reflexes to described second polarization beam apparatus by described first polarization beam apparatus, reflex to the first reflective electrooptic modulator by described second polarization beam apparatus again, by the described first reflective electrooptic modulators modulate back reflection to described second polarization beam apparatus, transmission cross described second polarization beam apparatus again transmission cross first polarization converter, reflex to described projection lens by described the 4th polarization beam apparatus then;
Described second light beam transmission is successively crossed described first polarization beam apparatus and described second polarization converter, reflex to the described second reflective electrooptic modulator by described the 3rd polarization beam apparatus again, by the described second reflective electrooptic modulators modulate back reflection, described the 3rd polarization converter and the 4th polarization beam apparatus are crossed in transmission successively then, the described projection lens of directive.
Adopt technique scheme, when described first light beam and second light beam were mapped to described light source assembly respectively, light intensity was balanced mutually as far as possible, and the drop shadow effect of Huo Deing is more outstanding like this.
And, it is orthogonal that described first polarization beam apparatus, second polarization beam apparatus, the 3rd polarization beam apparatus and the 4th polarization beam apparatus can be separated into polarization state with incident beam respectively, and the also orthogonal two-beam of exit direction, and be " rice " font placement composition polarization spectroscope group mutually.Such installation is also comparatively convenient, and the light path of described first light beam and second light beam also can be symmetrically distributed, and is convenient to obtain the first balanced light beam and the intensity of second light beam.
Chinese patent application CN03137759.9 " reflection type liquid crystal stereoprojection ray machine " has also announced the stereoprojection ray machine that uses four polarization light-dividing surfaces and two LCOS panels.Wherein, two blocks of white light wave plates that are used for the rotary beam polarization state all are placed same paths, though can reduce the influence of wave plate to contrast by add the method for polaroid before and after wave plate, but therefore the brightness of this passage also can reduce, and is difficult for obtaining two channel image of high conformity.
Compare with above-mentioned prior art, in the technical scheme of the present invention, two polarizing beam splitters are respectively at the two blocks of reflecting electrooptic modulator, LCOS panel for example, in the light path at place, balance owing in light path, adding the luminous energy loss that polarizing beam splitter is introduced.
The invention has the advantages that, it has proposed a kind of stereoprojection equipment scheme of two-piece type reflective electrooptic modulator of practicality, beam split light path symmetry, the binocular parallax projected image of the brightness and contrast's balance that is easy to get is realized more outstanding miniature stereo projection display under existing technical merit.
Preferably, described first polarization beam apparatus, second polarization beam apparatus, the 3rd polarization beam apparatus and the 4th polarization beam apparatus are selected respectively to adopt cubical polarization splitting prism or polarization spectro sheet.
Preferably, described first polarization beam apparatus, second polarization beam apparatus, the 3rd polarization beam apparatus and the 4th polarization beam apparatus are mutually permanently connected and are one, and perhaps part is connected to one, perhaps mutual physical separation.
Preferably, the described first reflective electrooptic modulator and the second reflective electrooptic modulator adopt the reflective type silicon-based liquid crystal panel respectively.
Further, the described first reflective electrooptic modulator and the second reflective electrooptic modulator adopt colour reflective formula silica-based liquid crystal panel respectively; Described light source assembly adopts the light source of outgoing white light.
Perhaps, the described first reflective electrooptic modulator and the second reflective electrooptic modulator adopt monochromatic reflective type silicon-based liquid crystal panel respectively; But described light source assembly adopts the light source of the synthesize white light of outgoing sequential.
Preferably, described stereoprojection equipment also comprises: be arranged in described first light beam and second light beam brightness adjusting device at least one.
Adopt technique scheme, can also described brightness adjusting device be set, come the intensity of described first light beam of further balance and second light beam, to obtain outstanding display effect by adjustment.
Further, described brightness adjusting device adopts at least one brightness decay device.
Preferably, described brightness decay device is fixedly connected on described first polarization converter or second polarization converter, perhaps with described first polarization converter or the mutual physical separation of second polarization converter.
Description of drawings
Fig. 1 is the structural representation of a kind of embodiment of stereoprojection equipment of the present invention;
Fig. 2 is the structural representation of the another kind of embodiment of stereoprojection equipment of the present invention;
Fig. 3 is the structural representation of the another kind of embodiment of stereoprojection equipment of the present invention.
Embodiment
Below in conjunction with accompanying drawing, more excellent embodiment of the present invention is described in further detail:
As shown in Figure 1, a kind of stereoprojection equipment comprises: light source assembly 100; Four polarization splitting prisms 201,202,203 and 204; Two blocks of white light wave plates 301 and 302; Two LCOS panels 401 and 402.
Wherein, light source assembly 100 is used for outgoing uniform illuminating bundle of natural light or circularly polarized light after shaping.In order to realize colored demonstration, described illuminating bundle can be a white light beam, also can be the monochromatic light of sequential.
Described s light beam enters polarization splitting prism 202, be radiated at LCOS panel 401 surfaces after being reflected, be the reflection of p light beam through the LCOS modulation panel, see through polarization splitting prism 202, pass through polarization converter 301 again, be converted to the s light beam, enter projection lens 500 through polarization splitting prism 204 reflections.
Described another road p light beam becomes the s light beam after seeing through polarization splitting prism 201 and white light wave plate 302, enters polarization splitting prism 203 and is reflected to LCOS panel 402, is modulated to the p light beam; After seeing through polarization splitting prism 203, see through polarization splitting prism 204 again and enter projection lens 500.
If load identical signal on the LCOS panel 401 and 402, optical machine engine then of the present invention projects the image on plane.If load the two-way unlike signal of taking and making according to the stereo display requirement on the LCOS panel 401 and 402 respectively, then two width of cloth anaglyphs on the LCOS panel 401 and 402 project on the screen by s light beam and p light beam respectively, the observer puts on corresponding analyzing glasses, just can observe stereo-picture.
For the brightness of balance two-way light beam, can be according to the intrinsic brilliance measurement result, the corresponding site in described separation/combination photosystem adds one or more brightness decay devices.
As shown in Figure 2, another kind of stereoprojection equipment comprises: light source assembly 100, have four polarization light-dividing surfaces 201,202,203 and 204, and be two polarization conversion faces 301 and 302 of combination separation/combination optical device; Two LCOS panels 401 and 402.
Wherein, light source assembly 100 is used for the illuminating bundle of outgoing natural light or circularly polarized light.In order to realize colored demonstration, described illuminating bundle can be a white light beam, also can be the monochromatic light of sequential.
Polarization light-dividing surface 201 is used for the illuminating bundle of natural light or circularly polarized light is divided into orthogonal s polarized light of polarization state and p light beam.
Described s light beam enters polarization light-dividing surface 202, be radiated at LCOS panel 401 surfaces after being reflected, be the reflection of p light beam through the LCOS modulation panel, see through polarization light-dividing surface 202, pass through polarization conversion face 301 again, be converted into the s light beam, enter projection lens 500 through polarization light-dividing surface 204 reflections;
Described another road p light beam becomes the s light beam after seeing through polarization light-dividing surface 201 and polarization conversion face 302, enters polarization light-dividing surface 203 and is reflected to LCOS panel 402, is modulated to the p light beam; After seeing through polarization light-dividing surface 203, see through polarization light-dividing surface 204 again and enter projection lens 500.
If load identical signal on the LCOS panel 401 and 402, optical machine engine then of the present invention projects the image on plane.If load the two-way unlike signal of taking and making according to the stereo display requirement on the LCOS panel 401 and 402 respectively, then two width of cloth anaglyphs on the LCOS panel 401 and 402 project on the screen by s light beam and p light beam respectively, the observer puts on corresponding analyzing glasses, just can observe stereo-picture.
For the brightness of balance two-way light beam, can be according to the intrinsic brilliance measurement result, the corresponding site in described separation/combination photosystem adds one or more brightness decay devices.
As shown in Figure 3, another kind of stereoprojection equipment comprises: light source assembly 100; Four are 201,202,203 and 204, blocks of white light wave plates with two polarization conversion faces 301 and 302 of polarization spectro plain film that meter font is placed; Two LCOS panels 401 and 402.
Wherein, light source assembly 100 is used for the illuminating bundle of outgoing natural light or circularly polarized light.In order to realize colored demonstration, described illuminating bundle can be a white light beam, also can be the monochromatic light of sequential.
Polarization spectro plain film 201 is used for the illuminating bundle of natural light or circularly polarized light is divided into orthogonal s polarized light of polarization state and p light beam.
Described s light beam enters polarization spectro plain film 202, be radiated at LCOS panel 401 surfaces after being reflected, be the reflection of p light beam through the LCOS modulation panel, see through polarization spectro plain film 202, pass through polarization conversion face 301 again, be converted into the s light beam, enter projection lens 500 through 204 reflections of polarization spectro plain film;
Described another road p light beam becomes the s light beam after seeing through polarization spectro plain film 201 and polarization conversion face 302, enters polarization spectro plain film 203 and is reflected to LCOS panel 402, is modulated to the p light beam; After seeing through polarization spectro plain film 203, see through polarization spectro plain film 204 again and enter projection lens 500.
If load identical signal on the LCOS panel 401 and 402, optical machine engine then of the present invention projects the image on plane.If load the two-way unlike signal of taking and making according to the stereo display requirement on the LCOS panel 401 and 402 respectively, then two width of cloth anaglyphs on the LCOS panel 401 and 402 project on the screen by s light beam and p light beam respectively, the observer puts on corresponding analyzing glasses, just can observe stereo-picture.
For the brightness of balance two-way light beam, can be according to the intrinsic brilliance measurement result, the corresponding site in described separation/combination photosystem adds one or more brightness decay devices.
Above content be in conjunction with concrete preferred implementation to further describing that the present invention did, can not assert that concrete enforcement of the present invention is confined to these explanations.For the general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.
Claims (9)
1. stereoprojection equipment, it is characterized in that, comprising: light source assembly, first polarization beam apparatus, second polarization beam apparatus, the 3rd polarization beam apparatus, the 4th polarization beam apparatus, first polarization converter, second polarization converter, the first reflective electrooptic modulator, second reflective electrooptic modulator and the projection lens;
It is orthogonal that described first polarization beam apparatus, second polarization beam apparatus, the 3rd polarization beam apparatus and the 4th polarization beam apparatus can be separated into polarization state with incident beam respectively, and the also orthogonal two-beam of exit direction, and be " rice " font placement composition polarization spectroscope group mutually; The light that described light source assembly sends is divided into orthogonal first light beam of polarization state and second light beam by described first polarization beam apparatus;
Described first light beam reflexes to described second polarization beam apparatus by described first polarization beam apparatus, reflex to the first reflective electrooptic modulator by described second polarization beam apparatus again, by the described first reflective electrooptic modulators modulate back reflection to described second polarization beam apparatus, transmission cross described second polarization beam apparatus again transmission cross first polarization converter, reflex to described projection lens by described the 4th polarization beam apparatus then;
Described second light beam transmission is successively crossed described first polarization beam apparatus and described second polarization converter, reflex to the described second reflective electrooptic modulator by described the 3rd polarization beam apparatus again, by the described second reflective electrooptic modulators modulate back reflection, described the 3rd polarization converter and the 4th polarization beam apparatus are crossed in transmission successively then, the described projection lens of directive.
2. stereoprojection equipment as claimed in claim 1 is characterized in that, described first polarization beam apparatus, second polarization beam apparatus, the 3rd polarization beam apparatus and the 4th polarization beam apparatus are selected respectively to adopt cubical polarization splitting prism or polarization spectro sheet.
3. stereoprojection equipment as claimed in claim 1 or 2, it is characterized in that, described first polarization beam apparatus, second polarization beam apparatus, the 3rd polarization beam apparatus and the 4th polarization beam apparatus are mutually permanently connected and are one, and perhaps part is connected to one, perhaps mutual physical separation.
4. stereoprojection equipment as claimed in claim 1 is characterized in that, the described first reflective electrooptic modulator and the second reflective electrooptic modulator adopt the reflective type silicon-based liquid crystal panel respectively.
5. stereoprojection equipment as claimed in claim 4 is characterized in that, the described first reflective electrooptic modulator and the second reflective electrooptic modulator adopt colour reflective formula silica-based liquid crystal panel respectively; Described light source assembly adopts the light source of outgoing white light.
6. stereoprojection equipment as claimed in claim 4 is characterized in that, the described first reflective electrooptic modulator and the second reflective electrooptic modulator adopt monochromatic reflective type silicon-based liquid crystal panel respectively; But described light source assembly adopts the light source of the synthesize white light of outgoing sequential.
7. stereoprojection equipment as claimed in claim 1 is characterized in that, also comprises: be arranged in described first light beam and second light beam brightness adjusting device at least one.
8. stereoprojection equipment as claimed in claim 7 is characterized in that, described brightness adjusting device adopts at least one brightness decay device.
9. stereoprojection equipment as claimed in claim 8 is characterized in that, described brightness decay device is fixedly connected on described first polarization converter or second polarization converter, perhaps with described first polarization converter or the mutual physical separation of second polarization converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105643413A CN102087420A (en) | 2010-11-30 | 2010-11-30 | Stereo projecting equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010105643413A CN102087420A (en) | 2010-11-30 | 2010-11-30 | Stereo projecting equipment |
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| CN102087420A true CN102087420A (en) | 2011-06-08 |
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| CN2010105643413A Pending CN102087420A (en) | 2010-11-30 | 2010-11-30 | Stereo projecting equipment |
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Cited By (10)
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| CN105980914A (en) * | 2013-12-16 | 2016-09-28 | 斯特立体影像科技有限公司 | Stereoscopic image device having improved brightness and method for providing stereoscopic image |
| 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 |
| CN106324961A (en) * | 2016-08-26 | 2017-01-11 | 合肥鑫晟光电科技有限公司 | Image display method and system |
| CN107479199A (en) * | 2017-08-04 | 2017-12-15 | 京东方科技集团股份有限公司 | Head-up display device and system |
| CN107533278A (en) * | 2015-04-30 | 2018-01-02 | 索尼公司 | Projection display equipment |
| CN108073030A (en) * | 2016-11-09 | 2018-05-25 | 深圳市光峰光电技术有限公司 | A kind of 3D projection lens and projector equipment |
| CN110389463A (en) * | 2018-04-23 | 2019-10-29 | 豪威科技股份有限公司 | For showing the method and system of high dynamic range images |
| CN112835202A (en) * | 2019-11-25 | 2021-05-25 | 青岛海信激光显示股份有限公司 | Laser projection equipment |
| CN112987328A (en) * | 2021-02-22 | 2021-06-18 | 京东方科技集团股份有限公司 | 3D projection assembly, 3D projector and display system |
| CN113589628A (en) * | 2020-04-30 | 2021-11-02 | 华为技术有限公司 | Projection display device and calibration method thereof |
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| CN107479199A (en) * | 2017-08-04 | 2017-12-15 | 京东方科技集团股份有限公司 | Head-up display device and system |
| CN110389463A (en) * | 2018-04-23 | 2019-10-29 | 豪威科技股份有限公司 | For showing the method and system of high dynamic range images |
| CN112835202A (en) * | 2019-11-25 | 2021-05-25 | 青岛海信激光显示股份有限公司 | Laser projection equipment |
| CN113589628A (en) * | 2020-04-30 | 2021-11-02 | 华为技术有限公司 | Projection display device and calibration method thereof |
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Application publication date: 20110608 |