CN104330953A - 3D projection system and control method thereof - Google Patents
3D projection system and control method thereof Download PDFInfo
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- CN104330953A CN104330953A CN201310309653.3A CN201310309653A CN104330953A CN 104330953 A CN104330953 A CN 104330953A CN 201310309653 A CN201310309653 A CN 201310309653A CN 104330953 A CN104330953 A CN 104330953A
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B35/00—Stereoscopic photography
- G03B35/18—Stereoscopic photography by simultaneous viewing
- G03B35/26—Stereoscopic photography by simultaneous viewing using polarised or coloured light separating different viewpoint images
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
- G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
- G02B30/22—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the stereoscopic type
- G02B30/24—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the stereoscopic type involving temporal multiplexing, e.g. using sequentially activated left and right shutters
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
- G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
- G02B30/22—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the stereoscopic type
- G02B30/25—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the stereoscopic type using polarisation techniques
Abstract
The invention discloses a 3D projection system which comprises the components of a display screen for displaying a left-eye image and a right-eye image with a parallax according to a time sequence, a polarized light splitting device which is used for dividing the light of the left-eye image or the right-eye image that is displayed on the display screen to first polarized light and second polarized light which have different propagation directions and different polarization directions, a reflector which is used for adjusting the propagation direction of the first polarized light to a direction that same with propagation direction of the second polarized light, a light path adjusting device which is used for adjusting the light path of the first polarized light to a path that is same with the light path of the second polarized light, and a polarization conversion device which is used for adjusting the polarization state of the first polarized light and the second polarized light with same propagation direction to same. The 3D projection system has advantages of high image quality and low power consumption. The invention further provides a control method for the 3D projection system.
Description
[technical field]
The invention belongs to optical projection field, particularly relate to a kind of 3D optical projection system and be applied to the control method of described 3D optical projection system.
[background technology]
Left eye and the right eye of people have spacing, and cause the visual angle of two to there is fine distinction, the scenery that such difference can allow left eye and right eye observe respectively has parallax slightly, thus in the brain of people, form three-dimensional (3D) image.
It is 3D optical projection system that current 3D display system comprises comparatively advanced a kind of technology, and 3D optical projection system of the prior art, owing to display light linearly polarized can be reduced the brightness of display frame, inevitably reduces quality and the Consumer's Experience of display frame.In order to export the picture of enough brightness, usually can only be realized by the brightness of light-emitting component improving optical projection system, this again improves the power consumption of optical projection system, and reduce important light-emitting component life-span.
Therefore, how when not increasing power consumption and keep the life-span of important light-emitting component, the brightness and the display effect that improve 3D optical projection system become problem demanding prompt solution in the industry.
[summary of the invention]
The invention provides a kind of 3D optical projection system, comprising: display screen, for having left-eye image and the eye image of parallax according to sequential display; Polarised light splitter part, be arranged at described display screen exiting surface, for receiving left-eye image and the eye image light of the display of described display screen, and described left-eye image or eye image light are divided into the direction of propagation different and the first polarization light that polarization direction is different and the second polarization light; Catoptron, is arranged in the light path of described first polarization light, for the direction of propagation of described first polarization light and the second polarization light is adjusted to same direction; Light path adjusting device, is arranged in the light path of described second polarization light, for described first polarization light is adjusted to consistent with the light path of the second polarization light; Polarization converter device, is arranged in the light path of described first polarization light and described second polarization light, for the first consistent to the direction of propagation, light path polarization light is adjusted to consistent with the polarization state of the second polarization light, and exports outer projections screen to.
According to a preferred embodiment of the invention, when described display screen display left-eye image, the polarization direction unification of described first polarization light and described second polarization light is adjusted to the first polarization direction by described polarization converter device, when described display screen display eye image, the polarization direction unification of described first polarization light and described second polarization light is adjusted to the second polarization direction by described polarization converter device.
According to a preferred embodiment of the invention, described first polarization direction is perpendicular to described second polarization direction.
According to a preferred embodiment of the invention, described polarization converter device comprises the first polarization converter device and the second polarization converter device, when described display screen display left-eye image, described first polarization converter device keeps the polarization direction of described first polarization light, and described second polarization converter device is by consistent with the polarization direction of described first polarization light for the adjustment of the polarization direction of described second polarization light; When described display screen display eye image, described second polarization converter device keeps the polarization direction of described second polarization light, and described first polarization converter device is by consistent with the polarization direction of described second polarization light for the adjustment of the polarization direction of described first polarization light.
According to a preferred embodiment of the invention, described polarization converter device comprises the first polarization converter device, the second polarization converter device and the 3rd polarization converter device, the polarization direction of the second polarization light is adjusted to consistent with the polarization direction of described first polarization light by described 3rd polarization converter device, when described display screen display left-eye image, described first polarization converter device keeps the polarization direction of described first polarization light, and described second polarization converter device keeps the polarization direction of the second polarization light after described 3rd polarization converter device adjustment; When described display screen display eye image, the polarization direction of described first polarization light is rotated ± 90 degree by described first polarization converter device, and the polarization direction of the second polarization light after described 3rd polarization converter device adjustment is rotated ± 90 degree by described second polarization converter device.
According to a preferred embodiment of the invention, described polarization converter device comprises the first polarization converter device, the second polarization converter device and the 3rd polarization converter device, the polarization direction of the first polarization light is adjusted to consistent with the polarization direction of described second polarization light by described 3rd polarization converter device, when described display screen display left-eye image, described first polarization converter device keeps the polarization direction of described first polarization light after described 3rd polarization converter device adjustment, and described second polarization converter device keeps the polarization direction of described second polarization light; When described display screen display eye image, the polarization direction of described first polarization light after described 3rd polarization converter device adjustment is rotated ± 90 degree by described first polarization converter device, and the polarization direction of described second polarization light is rotated ± 90 degree by described second polarization converter device.
According to a preferred embodiment of the invention, described polarised light splitter part is PBS plate, and described first polarization light is the P light that described PBS plate exports, and described second polarization light is the S light that described PBS plate exports.
According to a preferred embodiment of the invention, described light path adjusting device comprises the convex lens and concavees lens with the same focal length, by adjusting described distance between convex lens and concavees lens, adjust the light path of the first polarization light by described convex lens and concavees lens.
According to a preferred embodiment of the invention, described display screen is DLP display screen.
The present invention also provides a kind of control method of 3D optical projection system, comprising: display left-eye image; Left-eye image light is converted to the first polarization light that the direction of propagation is consistent, light path is consistent and the second polarization light; First polarization light of described left-eye image and the polarization direction of the second polarization light are all adjusted to the first polarization direction and export; Display eye image; Eye image light is converted to the first polarization light that the direction of propagation is consistent, light path is consistent and the second polarization light; First polarization light of described eye image and the polarization direction of the second polarization light are all adjusted to the second polarization direction and export, and described second polarization direction perpendicular is in described second polarization direction.
Compared to prior art, described 3D optical projection system is when showing arbitrary left-eye image or eye image, the light exported from display screen is converted to orthogonal first polarization light in polarization direction and the second polarization light, adjusted by light path and polarization state adjustment after, all can be incident upon on screen with single polarization state, namely, the brightness of arbitrary image does not almost incur loss, be transmitted on described screen to arrive close to the emitting brightness of described display screen, maintain the brightness of original image, improve display effect and reduce the power consumption of 3D optical projection system, also improve the serviceable life of light-emitting component important in projector simultaneously.In addition, because the first polarized light have passed through the light path adjustment of described light path adjusting device, make the first polarization light consistent with the light path of the second polarization light, the light path avoiding the first polarization light and the second polarization light is inconsistent and affect display effect, thus brings good 3D visual experience to user.
[accompanying drawing explanation]
Fig. 1 is structure and the light path schematic diagram of an embodiment of 3D optical projection system provided by the invention;
Fig. 2 is the another kind of light path schematic diagram of an embodiment of 3D optical projection system provided by the invention;
Fig. 3 is the structural representation of another embodiment of 3D optical projection system provided by the invention;
Fig. 4 is the structural representation of another embodiment of 3D optical projection system provided by the invention.
[embodiment]
Below in conjunction with drawings and Examples, the present invention is described in detail.
Refer to Fig. 1, Fig. 1 is the structural representation of an embodiment of 3D optical projection system provided by the invention, and this 3D optical projection system 100 comprises display screen 11, polarised light splitter part 12, light path adjusting device 10, catoptron 15 and polarization converter device 160.Described 3D optical projection system 100 is by 3D stereoscopic image projection on screen 18, and user can observe 3D rendering by 3D glasses.
More specifically, described display screen 11 is for having left-eye image L and the eye image R of parallax according to sequential display.General, the image that described display screen 11 shows is natural light or unpolarizedization light.Described display screen 11 can DLP (Digital Light Procession) display screen or emergent ray be the display screen of natural light, does not do concrete restriction herein.
Described polarised light splitter part 12 is arranged on the exiting surface of described display screen 11, available light for the left-eye image L that shown by described display screen 11 or eye image R is divided into the direction of propagation different and the first polarization light that polarization direction is different and the second polarization light, preferably, described first polarization light is vertical with the polarization direction of the second polarization light.In the present embodiment, described polarised light splitter part 12 is PBS(Polarizing Beam Splitter) plate, the light that described display screen 11 produces is divided into along the P molded line polarized light (being called for short P light) of original optical path direction propagation with perpendicular to original optical path direction S molded line polarized light (being called for short S light), wherein P light is mutually vertical with S polarisation of light side, as shown in Figure 1.The P light that the corresponding described PBS plate of described first polarization light exports, the S light that the corresponding described PBS plate of described second polarization light exports.Wherein, to be reflected the rear change direction of propagation by described catoptron 15 consistent with the direction of propagation of P light for S light.
In other embodiments, described polarised light splitter part 12 can also be the light splitting device of the forms such as PBS prism, is not specifically limited at this.
Described light path adjusting device 10 is consistent with the light path of described second polarization light for the light path adjusting described first polarization light.In the present embodiment, described light path adjusting device 10 combines for the convex lens 13 and concavees lens 14 with the same focal length, it is arranged in described first polarization light light path, by the distance between adjustment convex lens 13 and concavees lens 14, can extend or shorten the light path of described first polarization light, make it consistent with the light path of described second polarization light.
Polarization converter device 16 is arranged in the light path of described first polarization light and the second polarization light, and it is for being adjusted to consistent by the first consistent for direction of propagation polarization light with the polarization state of the second polarization light.Concrete, when described display screen 11 shows left-eye image L, the polarization direction unification of described first polarization light and described second polarization light is adjusted to the first polarization direction by described polarization converter device 16; When described display screen 11 shows eye image R, the polarization direction unification of described first polarization light and described second polarization light is adjusted to the second polarization direction by described polarization converter device 16.
In the present embodiment, described polarization converter device 16 comprises the first polarization converter device 161 and the second polarization converter device 162.When described display screen 11 shows left-eye image L, described first polarization converter device 161 keeps the polarization direction of described first polarization light, and described second polarization converter device 162 is by consistent with the polarization direction of described first polarization light for the adjustment of the polarization direction of described second polarization light; When described display screen 11 shows eye image R, described second polarization converter device 162 keeps the polarization direction of described second polarization light, and described first polarization converter device 161 is by consistent with the polarization direction of described second polarization light for the adjustment of the polarization direction of described first polarization light.
Described first polarization converter device 161 and the second polarization converter device 162 can be twisted nematic liquid crystals box or other deflection switching devices, and liquid crystal cell, for adjusting the polarization direction of polarized light known by those skilled in that art, does not repeat at this.
Below the principle of work of 3D optical projection system 100 is introduced in detail:
As shown in Figure 1, in the T1 time, described display screen 11 shows left-eye image L, left-eye image L light is through described polarised light splitter part 12(PBS plate) after, be divided into the orthogonal P light in polarization direction and S light, P light is propagated along original optical path, and S light is propagated along the direction of perpendicular distal light path, after the reflection of described catoptron 15, the direction of propagation is consistent with P optical propagation direction.P light is after described light path adjusting device 16 adjusts light path, P light and S light have identical light path and phase place, propagate into described first polarization converter device 161 and the second polarization converter device 162 respectively simultaneously, by controlling described first polarization converter device 161 and the second polarization converter device 162, make to be remained unchanged by the P polarisation of light direction of described first polarization converter device 161, by the S polarisation of light direction 90-degree rotation of the second polarization converter device 162, thus consistent with P polarisation of light direction.Then the P light that polarization direction is consistent and S light (i.e. left-eye image L light) propagate on screen 18 simultaneously.
As shown in Figure 2, the T2 time, described display screen 11 shows eye image R, the light path of described eye image R and control to the light path of left-eye image L and control similar, difference is, when the P light and S light that represent eye image R propagate into described first polarization converter device 161 and the second polarization converter device 162 respectively, by controlling, make to be remained unchanged by the S polarisation of light direction of described second polarization converter device 162, by the P polarisation of light direction 90-degree rotation of the first polarization converter device 161, thus consistent with S polarisation of light direction.Then the P light that polarization direction is consistent and S light (i.e. eye image R light) propagate on screen 18 simultaneously.
T1+T2 is a complete 3D rendering frame, by light-dividing devices such as 3D glasses, the left-eye image L in T1 moment only can be propagated in user's left eye, and the eye image R in T2 moment only can propagate in user's right eye, then user can form the 3D picture of this two field picture in the brain.Above-mentioned loop cycle is reciprocal, and user can watch dynamic 3D picture.
Compared to prior art, described 3D optical projection system 100 is when showing arbitrary left-eye image L or eye image R, after being divided into P light and S light from the light of display screen 11 output, adjusted by light path and polarization state adjustment after, equal can with single polarization state projection on the screen 18, namely, the brightness of arbitrary image does not almost incur loss, 18 are transmitted on described screen to arrive close to the emitting brightness of described display screen 11, maintain the brightness of original image, improve display effect and reduce the power consumption of 3D optical projection system 100, also improve the serviceable life of light-emitting component important in projector simultaneously.In addition, because P light have passed through the light path adjustment of described light path adjusting device 10, make P light consistent with the light path of S light, avoid P light, S light light path inconsistent and affect display effect, thus bring good 3D visual experience to user.
Refer to Fig. 3, Fig. 3 is the structural representation of another embodiment of 3D optical projection system provided by the invention.Due to 3D optical projection system 200 and 3D optical projection system 100 similar in the first embodiment shown in Fig. 1 of the present embodiment, Fig. 3 only indicates its main difference part and illustrates.Compared with the 3D optical projection system 100 shown in Fig. 1,3D optical projection system 200 main difference part is:
Polarization converter device 26 also comprises the 3rd polarization converter device 263, described 3rd polarization converter device 263 is arranged between described catoptron 25 and described second polarization converter device 262, and the polarization direction of the second polarization light is all adjusted to consistent with the polarization direction of the first polarization light by any time.
When described display screen 21 shows left-eye image L, described first polarization converter device 261 keeps the polarization direction of described first polarization light, and described second polarization converter device 262 keeps the polarization direction of described second polarization light; When described display screen 21 shows eye image R, the polarization direction of described first polarization light is rotated a predetermined angular by described first polarization converter device 261, this anglec of rotation is preferably ± 90 degree, the polarization direction of described second polarization light is rotated a predetermined angular by described second polarization converter device 262, and this anglec of rotation is preferably ± 90 degree.
Described first polarization converter device 261 and the second polarization converter device 262 can be twisted nematic liquid crystals box or other deflection switching devices, and liquid crystal cell, for adjusting the polarization direction of polarized light known by those skilled in that art, does not repeat at this.Certainly in some variant embodiment, because the first polarization light and the second polarization light that incide described first polarization converter device 261 and the second polarization converter device 262 have identical polarization direction, first polarization light rotates also consistent with the polarization direction of the second polarization light, described first polarization converter device 261 and the second polarization converter device 262 can adopt identical control device or rate-determining steps, simplify control method.In addition, described first polarization converter device 261 and the second polarization converter device 262 also accessible site are integral type, simplify structure and control, and reduce the cost of product.
Described 3rd polarization converter device 263 can be 1/2 wave plate (also becoming half-wave plate).
Below the principle of work of 3D optical projection system 200 is introduced in detail:
As shown in Figure 3, in the T1 time, described display screen 21 shows left-eye image L, left-eye image L light is through described polarised light splitter part 22(PBS plate) after, be divided into the orthogonal P light in polarization direction and S light, P light is propagated along original optical path, S light is propagated along the direction of perpendicular distal light path, through the reflection of described catoptron 25, the direction of propagation is consistent with P optical propagation direction, then adjusts polarization direction through described 3rd polarization converter device 263 consistent with P light polarization direction.P light is after described light path adjusting device 26 adjusts light path, P light and S light have identical light path polarization direction, propagate into described first polarization converter device 261 and the second polarization converter device 262 respectively simultaneously, control described first polarization converter device 261 and the second polarization converter device 262 makes the polarization direction of P light and the S light (i.e. left-eye image L light) passed through remain unchanged, and propagate on screen 28.
As shown in Figure 4, the T2 time, described display screen 21 shows eye image R, the light path of described eye image R and control to the light path of left-eye image L and control similar, difference is, when the P light and S light that represent eye image R propagate into described first polarization converter device 261 and the second polarization converter device 262 respectively, by controlling, make by the P polarisation of light direction of the first polarization converter device 261 rotate ± 90 degree, make simultaneously by the S polarisation of light direction of described second polarization converter device 262 rotate ± 90 degree, then the P light that polarization direction is consistent and S light (i.e. eye image R light) propagate on screen 28 simultaneously.That is, the polarization direction of the left-eye image L light in T1 moment and the polarization direction of eye image R light mutually vertical.
T1+T2 is a complete 3D rendering frame, by light-dividing devices such as 3D glasses, the left-eye image L in T1 moment only can be propagated in user's left eye, and the eye image R in T2 moment only can propagate in user's right eye, then user can form the 3D picture of this two field picture in the brain.Above-mentioned loop cycle is reciprocal, and user can watch dynamic 3D picture.
Be understandable that, in other variant embodiment, described 3rd polarization converter device 263 can also be arranged between described light path adjusting device 20 and described first polarization converter device 261, the 3D optical projection system 200 of the second embodiment shown in its to Fig. 3, Fig. 4 is done in similar with control method, does not repeat them here.
Compared to prior art, in the 3D optical projection system 200 of the second embodiment, second polarization light is before described second polarization converter device 162 of arrival, it is consistent for first adjusting its polarization direction with the polarization direction of described first polarization light through described 3rd polarization converter device 163, so in T1 moment and T2 moment, the polarization direction of the first polarization light and the second polarization light described in synchro control is only needed to rotate ± 90 degree when described first polarization converter device 261 and the second polarization converter device 262, even the first polarization converter device 261 and the second polarization converter device 262 can be integrated into a polarization converter device, the control method of optical projection system 200 is more simple and stable.
In the above-described embodiments, only to invention has been exemplary description, but those skilled in the art can carry out various amendment to the present invention without departing from the spirit and scope of the present invention after reading present patent application.
Claims (10)
1. a 3D optical projection system, comprising:
Display screen, for having left-eye image and the eye image of parallax according to sequential display;
Polarised light splitter part, be arranged at described display screen exiting surface, for receiving left-eye image and the eye image light of the display of described display screen, and described left-eye image or eye image light are divided into the direction of propagation different and the first polarization light that polarization direction is different and the second polarization light;
Catoptron, is arranged in the light path of described first polarization light, for the direction of propagation of described first polarization light and the second polarization light is adjusted to same direction;
Light path adjusting device, is arranged in the light path of described second polarization light, for described first polarization light is adjusted to consistent with the light path of the second polarization light;
Polarization converter device, is arranged in the light path of described first polarization light and described second polarization light, for the first consistent to the direction of propagation, light path polarization light is adjusted to consistent with the polarization state of the second polarization light, and exports outer projections screen to.
2. 3D optical projection system as claimed in claim 1, it is characterized in that, when described display screen display left-eye image, the polarization direction unification of described first polarization light and described second polarization light is adjusted to the first polarization direction by described polarization converter device, when described display screen display eye image, the polarization direction unification of described first polarization light and described second polarization light is adjusted to the second polarization direction by described polarization converter device.
3. 3D optical projection system as claimed in claim 1, it is characterized in that, described first polarization direction is perpendicular to described second polarization direction.
4. 3D optical projection system as claimed in claim 1, it is characterized in that, described polarization converter device comprises the first polarization converter device and the second polarization converter device, when described display screen display left-eye image, described first polarization converter device keeps the polarization direction of described first polarization light, and described second polarization converter device is by consistent with the polarization direction of described first polarization light for the adjustment of the polarization direction of described second polarization light; When described display screen display eye image, described second polarization converter device keeps the polarization direction of described second polarization light, and described first polarization converter device is by consistent with the polarization direction of described second polarization light for the adjustment of the polarization direction of described first polarization light.
5. 3D optical projection system as claimed in claim 1, it is characterized in that, described polarization converter device comprises the first polarization converter device, second polarization converter device and the 3rd polarization converter device, the polarization direction of the second polarization light is adjusted to consistent with the polarization direction of described first polarization light by described 3rd polarization converter device, when described display screen display left-eye image, described first polarization converter device keeps the polarization direction of described first polarization light, described second polarization converter device keeps the polarization direction of the second polarization light after described 3rd polarization converter device adjustment, when described display screen display eye image, the polarization direction of described first polarization light is rotated ± 90 degree by described first polarization converter device, and the polarization direction of the second polarization light after described 3rd polarization converter device adjustment is rotated ± 90 degree by described second polarization converter device.
6. 3D optical projection system as claimed in claim 1, it is characterized in that, described polarization converter device comprises the first polarization converter device, second polarization converter device and the 3rd polarization converter device, the polarization direction of the first polarization light is adjusted to consistent with the polarization direction of described second polarization light by described 3rd polarization converter device, when described display screen display left-eye image, described first polarization converter device keeps the polarization direction of described first polarization light after described 3rd polarization converter device adjustment, described second polarization converter device keeps the polarization direction of described second polarization light, when described display screen display eye image, the polarization direction of described first polarization light after described 3rd polarization converter device adjustment is rotated ± 90 degree by described first polarization converter device, and the polarization direction of described second polarization light is rotated ± 90 degree by described second polarization converter device.
7. 3D optical projection system as claimed in claim 1, it is characterized in that, described polarised light splitter part is PBS plate, and described first polarization light is the P light that described PBS plate exports, and described second polarization light is the S light that described PBS plate exports.
8. 3D optical projection system as claimed in claim 1, it is characterized in that, described light path adjusting device comprises the convex lens and concavees lens with the same focal length, by adjusting described distance between convex lens and concavees lens, adjusts the light path of the first polarization light by described convex lens and concavees lens.
9. 3D optical projection system as claimed in claim 1, it is characterized in that, described display screen is DLP display screen.
10. a control method for 3D optical projection system, comprising:
Display left-eye image;
Left-eye image light is converted to the first polarization light that the direction of propagation is consistent, light path is consistent and the second polarization light;
First polarization light of described left-eye image and the polarization direction of the second polarization light are all adjusted to the first polarization direction and export;
Display eye image;
Eye image light is converted to the first polarization light that the direction of propagation is consistent, light path is consistent and the second polarization light;
First polarization light of described eye image and the polarization direction of the second polarization light are all adjusted to the second polarization direction and export, and described second polarization direction perpendicular is in described second polarization direction.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106154731A (en) * | 2015-04-09 | 2016-11-23 | 深圳市光峰光电技术有限公司 | Light source module and stereo projection system |
| CN111448506A (en) * | 2017-10-11 | 2020-07-24 | Volfoni研发公司 | Stereoscopic three-dimensional projection system with short throw ratio |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4792850A (en) * | 1987-11-25 | 1988-12-20 | Sterographics Corporation | Method and system employing a push-pull liquid crystal modulator |
| US20060291053A1 (en) * | 2006-01-23 | 2006-12-28 | Colorlink, Inc. | Achromatic Polarization Switches |
| US20080143965A1 (en) * | 2006-10-18 | 2008-06-19 | Real D | Combining P and S rays for bright stereoscopic projection |
| US20080225236A1 (en) * | 2006-09-29 | 2008-09-18 | Colorlink, Inc. | Polarization conversion systems for stereoscopic projection |
| CN101688940A (en) * | 2007-05-09 | 2010-03-31 | 瑞尔·D公司 | Polarization conversion system and method for stereoscopic projection |
| CN203025425U (en) * | 2012-12-29 | 2013-06-26 | 深圳市时代华影科技开发有限公司 | High-luminous-efficiency light modulating device and high-luminous-efficiency stereographic projection system |
| CN203433263U (en) * | 2013-07-22 | 2014-02-12 | 深圳市亿思达显示科技有限公司 | 3d projection system |
-
2013
- 2013-07-22 CN CN201310309653.3A patent/CN104330953A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4792850A (en) * | 1987-11-25 | 1988-12-20 | Sterographics Corporation | Method and system employing a push-pull liquid crystal modulator |
| US20060291053A1 (en) * | 2006-01-23 | 2006-12-28 | Colorlink, Inc. | Achromatic Polarization Switches |
| US20080225236A1 (en) * | 2006-09-29 | 2008-09-18 | Colorlink, Inc. | Polarization conversion systems for stereoscopic projection |
| US20080143965A1 (en) * | 2006-10-18 | 2008-06-19 | Real D | Combining P and S rays for bright stereoscopic projection |
| CN101688940A (en) * | 2007-05-09 | 2010-03-31 | 瑞尔·D公司 | Polarization conversion system and method for stereoscopic projection |
| CN203025425U (en) * | 2012-12-29 | 2013-06-26 | 深圳市时代华影科技开发有限公司 | High-luminous-efficiency light modulating device and high-luminous-efficiency stereographic projection system |
| CN203433263U (en) * | 2013-07-22 | 2014-02-12 | 深圳市亿思达显示科技有限公司 | 3d projection system |
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