CN203433263U - 3d projection system - Google Patents
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- CN203433263U CN203433263U CN201320438520.1U CN201320438520U CN203433263U CN 203433263 U CN203433263 U CN 203433263U CN 201320438520 U CN201320438520 U CN 201320438520U CN 203433263 U CN203433263 U CN 203433263U
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Abstract
The utility model discloses a 3D projection system. The 3D projection system comprises a display screen for displaying a left eye image and a right eye image with parallax according to the time sequence, a polarized light splitter for splitting the left eye image or the right eye image displayed on the display screen into first polarized light and second polarized light with different propagation directions and different polarization directions, a reflecting mirror for adjusting the propagation direction of the first polarized light to be same to the propagation direction of the second polarized light, a light path adjustment device for adjusting the light path of the first polarized light to be same to the light path of the second polarized light, and a polarization conversion device for adjusting the polarized states of the first polarized light and the second polarized light with the same propagation direction to be consistent. The 3D projection system has advantages of high image quality, and low power consumption.
Description
[technical field]
The utility model belongs to optical projection field, relates in particular to a kind of 3D optical projection system.
[background technology]
People's left eye and right eye have spacing, cause the visual angle of two to have fine distinction, and the scenery that such difference can allow left eye and right eye observe respectively has parallax slightly, thereby in people's brain, form three-dimensional (3D) image.
3D display system comprises that comparatively advanced a kind of technology is 3D optical projection system at present, and 3D optical projection system of the prior art is owing to can reducing the brightness of display frame by display light linearly polarized, and the quality and the user that have inevitably reduced display frame experience.In order to export the picture of enough brightness, conventionally can only realize by improving the brightness of the light-emitting component of optical projection system, this has improved again the power consumption of optical projection system, and reduced important light-emitting component life-span.
Therefore,, how in the situation that the life-span that does not increase power consumption and keep important light-emitting component, the brightness and the display effect that improve 3D optical projection system become problem demanding prompt solution in the industry.
[utility model content]
The utility model provides a kind of 3D optical projection system, comprising: display screen, for show left-eye image and the eye image with parallax according to sequential; Polarised light splitter part, be arranged at described display screen exiting surface, the left-eye image and the eye image light that for receiving described display screen, show, and described left-eye image or eye image light are divided into different the first polarization light and the second polarization lights of direction of propagation difference and polarization direction; Catoptron, is arranged in the light path of described the first polarization light, for the direction of propagation of described the first polarization light and the second polarization light is adjusted into same direction; Light path is adjusted device, is arranged in the light path of described the second polarization light, for the light path of described the first polarization light and the second polarization light is adjusted into consistent; Polarization converter device, is arranged in the light path of described the first polarization light and described the second polarization light, consistent for the polarization state of consistent the first polarization light in the direction of propagation, light path and the second polarization light is adjusted into, and exports outer projections screen to.
According to a preferred embodiment of the present utility model, when described display screen shows left-eye image, described polarization converter device is adjusted into the first polarization direction by the polarization direction unification of described the first polarization light and described the second polarization light, when described display screen shows eye image, described polarization converter device is adjusted into the second polarization direction by the polarization direction unification of described the first polarization light and described the second polarization light.
According to a preferred embodiment of the present utility model, described the first polarization direction is perpendicular to described the second polarization direction.
According to a preferred embodiment of the present utility model, described polarization converter device comprises the first polarization converter device and the second polarization converter device, when described display screen shows left-eye image, described the first polarization converter device keeps the polarization direction of described the first polarization light, and described the second polarization converter device is adjusted consistent with the polarization direction of described the first polarization light by the polarization direction of described the second polarization light; When described display screen shows eye image, described the second polarization converter device keeps the polarization direction of described the second polarization light, and described the first polarization converter device is adjusted consistent with the polarization direction of described the second polarization light by the polarization direction of described the first polarization light.
According to a preferred embodiment of the present utility model, described polarization converter device comprises the first polarization converter device, the second polarization converter device and the 3rd polarization converter device, described the 3rd polarization converter device is adjusted into the polarization direction of the second polarization light consistent with the polarization direction of described the first polarization light, when described display screen shows left-eye image, described the first polarization converter device keeps the polarization direction of described the first polarization light, and described the second polarization converter device keeps the polarization direction of the second polarization light after described the 3rd polarization converter device is adjusted; When described display screen shows eye image, described the first polarization converter device is by polarization direction rotation ± 90 degree of described the first polarization light, and described the second polarization converter device is by polarization direction rotation ± 90 degree of the second polarization light after described the 3rd polarization converter device is adjusted.
According to a preferred embodiment of the present utility model, described polarization converter device comprises the first polarization converter device, the second polarization converter device and the 3rd polarization converter device, described the 3rd polarization converter device is adjusted into the polarization direction of the first polarization light consistent with the polarization direction of described the second polarization light, when described display screen shows left-eye image, described the first polarization converter device keeps the polarization direction of described the first polarization light after described the 3rd polarization converter device is adjusted, described the second polarization converter device keeps the polarization direction of described the second polarization light, when described display screen shows eye image, described the first polarization converter device is by polarization direction rotation ± 90 degree of described the first polarization light after described the 3rd polarization converter device is adjusted, and described the second polarization converter device is by polarization direction rotation ± 90 degree of described the second polarization light.
According to a preferred embodiment of the present utility model, described polarised light splitter part is PBS plate, and described the first polarization light is the P light of described PBS plate output, and described the second polarization light is the S light of described PBS plate output.
According to a preferred embodiment of the present utility model, described light path is adjusted device and is comprised convex lens and the concavees lens with the same focal length, by adjusting the distance between described convex lens and concavees lens, adjust by the light path of the first polarization light of described convex lens and concavees lens.
According to a preferred embodiment of the present utility model, described display screen is DLP display screen.
Compared to prior art, described 3D optical projection system is when showing arbitrarily left-eye image or eye image, from the light of display screen output, be converted to orthogonal the first polarization light in polarization direction and the second polarization light, by light path adjust and the adjustment of polarization state after, all can with single polarization state, be incident upon on screen, , the brightness of arbitrary image does not almost incur loss, to approach the emitting brightness arrival of described display screen, be transmitted on described screen, the brightness that has kept original image, improve display effect and reduced the power consumption of 3D optical projection system, also improved the serviceable life of important light-emitting component in projector simultaneously.In addition, because the first polarized light has passed through the light path adjustment that described light path is adjusted device, make the first polarization light consistent with the light path of the second polarization light, the light path of having avoided the first polarization light and the second polarization light is inconsistent and affect display effect, thereby brings good 3D visual experience to user.
[accompanying drawing explanation]
Fig. 1 is structure and the light path schematic diagram of an embodiment of the 3D optical projection system that provides of the utility model;
Fig. 2 is the another kind of light path schematic diagram of an embodiment of the 3D optical projection system that provides of the utility model;
Fig. 3 is the structural representation of another embodiment of 3D optical projection system of providing of the utility model;
Fig. 4 is the structural representation of another embodiment of 3D optical projection system of providing of the utility model.
[embodiment]
Below in conjunction with drawings and Examples, the utility model is elaborated.
Refer to Fig. 1, the structural representation of an embodiment of the 3D optical projection system that Fig. 1 provides for the utility model, this 3D optical projection system 100 comprises that display screen 11, polarised light splitter part 12, light path adjust device 10, catoptron 15 and polarization converter device 160.Described 3D optical projection system 100 is by 3D stereoscopic image projection to screen 18, and user can observe 3D rendering by 3D glasses.
More specifically, described display screen 11 is for showing left-eye image L and the eye image R with parallax according to sequential.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 the emergent ray display screen that is 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, for the left-eye image L of described display screen 11 demonstrations or the available light of eye image R are divided into different the first polarization light and the second polarization lights of direction of propagation difference and polarization direction, preferably, described the 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 is produced is divided into the P molded line polarized light (being called for short P light) propagated along original optical path direction and 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 of the corresponding described PBS plate output of described the first polarization light, the S light of the corresponding described PBS plate output of described the second polarization light.Wherein, S light is consistent with the direction of propagation of P light by the described catoptron rear change of the 15 reflection direction of propagation.
In other embodiments, described polarised light splitter part 12 can also be the light splitting device of the forms such as PBS prism, at this, is not specifically limited.
It is consistent with the light path of described the second polarization light for adjusting the light path of described the first polarization light that described light path is adjusted device 10.In the present embodiment, described light path is adjusted device 10 for having convex lens 13 and concavees lens 14 combinations of the same focal length, it is arranged in described the first polarization light light path, by adjusting the distance between convex lens 13 and concavees lens 14, can extend or shorten the light path of described the first polarization light, make it consistent with the light path of described the second polarization light.
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, the polarization direction that described the first polarization converter device 161 keeps described the first polarization light, described the second polarization converter device 162 is adjusted consistent with the polarization direction of described the first polarization light by the polarization direction of described the second polarization light; When described display screen 11 shows eye image R, the polarization direction that described the second polarization converter device 162 keeps described the second polarization light, described the first polarization converter device 161 is adjusted consistent with the polarization direction of described the second polarization light by the polarization direction of described the first polarization light.
Described the 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 is known by those skilled in that art for adjusting the polarization direction of polarized light, at this, does not repeat.
Below introduce in detail the principle of work of 3D optical projection system 100:
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 adjusted device 16 through described light path and is adjusted after light path, P light and S light have identical light path and phase place, propagate into respectively described the first polarization converter device 161 and the second polarization converter device 162 simultaneously, by controlling described the first polarization converter device 161 and the second polarization converter device 162, make to remain unchanged by the P polarisation of light direction of described the first polarization converter device 161, by S polarisation of light direction rotation 90 degree of the second polarization converter device 162, thus consistent with P polarisation of light direction.Then consistent P light and the S light (being left-eye image L light) in polarization direction propagates on screen 18 simultaneously.
As shown in Figure 2, the T2 time, described display screen 11 shows eye image R, the light path of the light path of described eye image R and control and left-eye image L and control similar, difference is, when representing that the P light of eye image R and S light propagate into respectively described the first polarization converter device 161 and the second polarization converter device 162, by controlling, make to remain unchanged by the S polarisation of light direction of described the second polarization converter device 162, by P polarisation of light direction rotation 90 degree of the first polarization converter device 161, thus consistent with S polarisation of light direction.Then consistent P light and the S light (being eye image R light) in polarization direction propagates on screen 18 simultaneously.
T1+T2 is a complete 3D rendering frame, by light-dividing devices such as 3D glasses, T1 left-eye image L constantly only can be propagated in user's left eye, and T2 eye image R constantly only can propagate in user's right eye, and user can form the 3D picture of this two field picture in 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 arbitrarily left-eye image L or eye image R, from the light of display screen 11 outputs, be divided into P light and S light, by light path adjust and the adjustment of polarization state after, all can with single polarization state, be incident upon on screen 18, , the brightness of arbitrary image does not almost incur loss, to approach the emitting brightness of described display screen 11, arrive and to be transmitted on described screen 18, the brightness that has kept original image, improve display effect and reduced the power consumption of 3D optical projection system 100, also improved the serviceable life of important light-emitting component in projector simultaneously.In addition, because P light has passed through the light path adjustment that described light path is adjusted device 10, make P light consistent with the light path of S light, the light path of having avoided P light, S light is inconsistent and affect display effect, thereby brings good 3D visual experience to user.
Refer to Fig. 3, Fig. 3 is the structural representation of another embodiment of 3D optical projection system of providing of the utility model.Because the 3D optical projection system 200 of the present embodiment is similar with 3D optical projection system 100 structures in the first embodiment shown in Fig. 1, Fig. 3 only indicates and illustrates its main difference part.Compare with the 3D optical projection system 100 shown in Fig. 1,3D optical projection system 200 main difference parts are:
When described display screen 21 shows left-eye image L, the polarization direction that described the first polarization converter device 261 keeps described the first polarization light, the polarization direction that described the second polarization converter device 262 keeps described the second polarization light; When described display screen 21 shows eye image R, described the first polarization converter device 261 rotates a predetermined angular by the polarization direction of described the first polarization light, be preferably ± 90 degree of this anglec of rotation, described the second polarization converter device 262 rotates a predetermined angular by the polarization direction of described the second polarization light, be preferably ± 90 degree of this anglec of rotation.
Described the 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 is known by those skilled in that art for adjusting the polarization direction of polarized light, at this, does not repeat.Certainly in some distortion embodiment, owing to inciding the first polarization light and second polarization light of described the first polarization converter device 261 and the second polarization converter device 262, there is identical polarization direction, the polarization direction rotation of the first polarization light and the second polarization light is also consistent, described the first polarization converter device 261 and the second polarization converter device 262 can adopt identical control device or control step, simplify control method.In addition, described the first polarization converter device 261 and the second polarization converter device 262 formula that also can become one, simplified structure and control, and reduce the cost of product.
Described the 3rd polarization converter device 263 can be 1/2 wave plate (also becoming half-wave plate).
Below introduce in detail the principle of work of 3D optical projection system 200:
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, being 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 through described the 3rd polarization converter device 263, adjusts polarization direction consistent with P light polarization direction.P light is adjusted device 26 through described light path and is adjusted after light path, P light and S light have identical light path polarization direction, propagate into respectively described the first polarization converter device 261 and the second polarization converter device 262 simultaneously, control described the first polarization converter device 261 and the second polarization converter device 262 the P light that passes through and the polarization direction of S light (being left-eye image L light) are remained 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 the light path of described eye image R and control and left-eye image L and control similar, difference is, when representing that the P light of eye image R and S light propagate into respectively described the first polarization converter device 261 and the second polarization converter device 262, by controlling, make P polarisation of light direction rotation ± 90 degree by the first polarization converter device 261, make S polarisation of light direction rotation ± 90 degree by described the second polarization converter device 262 simultaneously, then consistent P light and the S light (being eye image R light) in polarization direction propagates on screen 28 simultaneously.That is, the polarization direction of T1 left-eye image L light is constantly mutually vertical with the polarization direction of eye image R light.
T1+T2 is a complete 3D rendering frame, by light-dividing devices such as 3D glasses, T1 left-eye image L constantly only can be propagated in user's left eye, and T2 eye image R constantly only can propagate in user's right eye, and user can form the 3D picture of this two field picture in brain.Above-mentioned loop cycle is reciprocal, and user can watch dynamic 3D picture.
Be understandable that, in other variant embodiment, described the 3rd polarization converter device 263 can also be arranged on described light path and adjust between device 20 and described the first polarization converter device 261, it does in similarly with control method to the 3D optical projection system 200 of the second embodiment shown in Fig. 3, Fig. 4, does not repeat them here.
Compared to prior art, in the 3D of the second embodiment optical projection system 200, the second polarization light is before arriving described the second polarization converter device 162, first through described the 3rd polarization converter device 163, adjusting its polarization direction is consistent with the polarization direction of described the first polarization light, so in the T1 moment and the T2 moment, when described the first polarization converter device 261 and the second polarization converter device 262, only need polarization direction rotation ± 90 degree of the first polarization light and the second polarization light described in synchro control, 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 the utility model has been carried out to exemplary description, but those skilled in the art can carry out various modifications to the utility model after reading present patent application in the situation that not departing from spirit and scope of the present utility model.
Claims (9)
1. a 3D optical projection system, comprising:
Display screen, for showing left-eye image and the eye image with parallax according to sequential;
Polarised light splitter part, be arranged at described display screen exiting surface, the left-eye image and the eye image light that for receiving described display screen, show, and described left-eye image or eye image light are divided into different the first polarization light and the second polarization lights of direction of propagation difference and polarization direction;
Catoptron, is arranged in the light path of described the first polarization light, for the direction of propagation of described the first polarization light and the second polarization light is adjusted into same direction;
Light path is adjusted device, is arranged in the light path of described the second polarization light, for the light path of described the first polarization light and the second polarization light is adjusted into consistent;
Polarization converter device, is arranged in the light path of described the first polarization light and described the second polarization light, consistent for the polarization state of consistent the first polarization light in the direction of propagation, light path and the second polarization light is adjusted into, 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 shows left-eye image, described polarization converter device is adjusted into the first polarization direction by the polarization direction unification of described the first polarization light and described the second polarization light, when described display screen shows eye image, described polarization converter device is adjusted into the second polarization direction by the polarization direction unification of described the first polarization light and described the second polarization light.
3. 3D optical projection system as claimed in claim 1, is characterized in that, described the first polarization direction is perpendicular to described the 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 shows left-eye image, described the first polarization converter device keeps the polarization direction of described the first polarization light, and described the second polarization converter device is adjusted consistent with the polarization direction of described the first polarization light by the polarization direction of described the second polarization light; When described display screen shows eye image, described the second polarization converter device keeps the polarization direction of described the second polarization light, and described the first polarization converter device is adjusted consistent with the polarization direction of described the second polarization light by the polarization direction of described the 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, the second polarization converter device and the 3rd polarization converter device, described the 3rd polarization converter device is adjusted into the polarization direction of the second polarization light consistent with the polarization direction of described the first polarization light, when described display screen shows left-eye image, described the first polarization converter device keeps the polarization direction of described the first polarization light, described the second polarization converter device keeps the polarization direction of the second polarization light after described the 3rd polarization converter device is adjusted, when described display screen shows eye image, described the first polarization converter device is by polarization direction rotation ± 90 degree of described the first polarization light, and described the second polarization converter device is by polarization direction rotation ± 90 degree of the second polarization light after described the 3rd polarization converter device is adjusted.
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, the second polarization converter device and the 3rd polarization converter device, described the 3rd polarization converter device is adjusted into the polarization direction of the first polarization light consistent with the polarization direction of described the second polarization light, when described display screen shows left-eye image, described the first polarization converter device keeps the polarization direction of described the first polarization light after described the 3rd polarization converter device is adjusted, described the second polarization converter device keeps the polarization direction of described the second polarization light, when described display screen shows eye image, described the first polarization converter device is by polarization direction rotation ± 90 degree of described the first polarization light after described the 3rd polarization converter device is adjusted, and described the second polarization converter device is by polarization direction rotation ± 90 degree of described the second polarization light.
7. 3D optical projection system as claimed in claim 1, is characterized in that, described polarised light splitter part is PBS plate, and described the first polarization light is the P light of described PBS plate output, and described the second polarization light is the S light of described PBS plate output.
8. 3D optical projection system as claimed in claim 1, it is characterized in that, described light path is adjusted device and is comprised convex lens and the concavees lens with the same focal length, by adjusting the distance between described convex lens and concavees lens, adjusts by the light path of the first polarization light of described convex lens and concavees lens.
9. 3D optical projection system as claimed in claim 1, is characterized in that, described display screen is DLP display screen.
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| CN201320438520.1U CN203433263U (en) | 2013-07-22 | 2013-07-22 | 3d projection system |
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| CN201320438520.1U CN203433263U (en) | 2013-07-22 | 2013-07-22 | 3d projection system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104133316A (en) * | 2014-07-17 | 2014-11-05 | 京东方科技集团股份有限公司 | Polarized light generating device and display device |
| CN104330953A (en) * | 2013-07-22 | 2015-02-04 | 深圳市亿思达科技集团有限公司 | 3D projection system and control method thereof |
| CN104950465A (en) * | 2014-03-28 | 2015-09-30 | 深圳市亿思达科技集团有限公司 | Dual-optical-path stereoscopic video conversion system employing metal polarizing light-splitting grating |
| CN105807533A (en) * | 2014-12-30 | 2016-07-27 | 深圳市亿思达科技集团有限公司 | Light source device based on nonlinear crystals and laser displayer |
-
2013
- 2013-07-22 CN CN201320438520.1U patent/CN203433263U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104330953A (en) * | 2013-07-22 | 2015-02-04 | 深圳市亿思达科技集团有限公司 | 3D projection system and control method thereof |
| CN104950465A (en) * | 2014-03-28 | 2015-09-30 | 深圳市亿思达科技集团有限公司 | Dual-optical-path stereoscopic video conversion system employing metal polarizing light-splitting grating |
| CN104133316A (en) * | 2014-07-17 | 2014-11-05 | 京东方科技集团股份有限公司 | Polarized light generating device and display device |
| CN105807533A (en) * | 2014-12-30 | 2016-07-27 | 深圳市亿思达科技集团有限公司 | Light source device based on nonlinear crystals and laser displayer |
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Address after: 518000 Shenzhen, Nanshan District, China Hi Tech in the world, the world's 806 digital building, room three Patentee after: SHENZHEN ESTAR DISPLAYTECH CO., LTD. Address before: 518000, District, Shenzhen, Nanshan District high tech Zone, Southern District, B1 digital technology park, building 2, C Patentee before: Shenzhen Esta Display Technology Co., Ltd. |
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