CN102360156A - 3D (three-dimensional) protection device and 3D projection method - Google Patents
3D (three-dimensional) protection device and 3D projection method Download PDFInfo
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- CN102360156A CN102360156A CN201110303481XA CN201110303481A CN102360156A CN 102360156 A CN102360156 A CN 102360156A CN 201110303481X A CN201110303481X A CN 201110303481XA CN 201110303481 A CN201110303481 A CN 201110303481A CN 102360156 A CN102360156 A CN 102360156A
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Abstract
A 3D (three-dimensional) protection device comprises a light source, a polarizing beam splitting device, two rotary liquid crystal display panels and a screen. The light source emits a beam, the polarizing beam splitting device is arranged on the path of the beam emitted by the light source and divides the beam into P polarized light and S polarized light, the polarization directions of the P polarized light and the S polarized light are perpendicular to each other, the S polarized light is reflected through the P polarized light, the beam paths of the P polarized light and the S polarized light are perpendicular to each other, the two rotary liquid crystal display panels are opposite in polarity, one rotary liquid crystal display panel is arranged on the beam path of the P polarized light, perpendicular to the beam path and used for reflecting the P polarized light into the S polarized light, the other rotary liquid crystal display panel is arranged on the beam path of the S polarized light and used for reflecting the S polarized light into the P polarized light, and the screen is used for imaging the received light. The invention aims to provide the 3D protection device and a 3D projection method, which can be used for achieving synchronism of optical distances, fine focusability, high pixel and brightness, compact structure and signal synchronization.
Description
Technical field
The invention belongs to the projector equipment field, be specifically related to a kind of 3D projection arrangement and 3D projecting method.
Background technology
Along with the continuous development of display technique, projection arrangement is practical by widely, and development place can be significantly and have an influence of high image quality and high-res.
Existing 3D projection optical system mainly is to improve the refresh rate of DLP display screen to realizing the 3D projecting function through time division way then more than the 120HZ; Normally adopt two projectors and two polariscopes to add the combination of anaglyph spectacles at present and realize for the 3D function; But this mode has increased use cost undoubtedly, also need do accurate adjustment to the relative position of two projectors in addition, and just can not be random after adjusting mobile; Consistance is relatively poor, uses very inconvenient.
And then there is employing Lcos to realize the function of 3D projection; Lcos: rotation display panels (conformable display spare): cooperate the polaroid analyzer to obtain from dark through control break polarization of incident light direction in greyscale level time period to bright greyscale level (256 GTGs of RGB) to the anglec of rotation of liquid crystal; The about 10 milliseconds of ranks of response speed (low speed rotation response) of liquid crystal rotation are a kind of novel reflection microlLCD shadow casting techniques.Compare with DLP with penetration LCD, Lcos has that the optical efficiency of utilization is high, volume is little, aperture opening ratio is high, manufacturing technology characteristics such as maturation comparatively, and it can realize high resolving power and color representation fully easily.
Like application number is " a kind of 3D optical projection system " of domestic publication number for " CN101986186A "; Wherein disclose and planted a kind of 3D optical projection system of using two conventional LCOS display chips (screen) to realize; Use two LCOS display chips to realize 3D function projection optical system; This optical system is by two LCOS display chips and PBS prism and one 1/2 zone plate, adds that simultaneously light-source system and imaging lens formed two LCOS display chip 3D projection optical systems.
Though realized the 3D projection; But whole volume is comparatively huge, and is projected in that their light path on the screen is asynchronous, focusing performance is poor, and pixel is low; Its signal is hard to keep synchronously; The right and left eyes signal errors is easy to generate shortcomings such as position deviation, makes the beholder produce spinning sensation easily, is those skilled in the art's technical issues that need to address always.
Summary of the invention
The object of the present invention is to provide a kind of make light path synchronously, good condensing performance, pixel is high, brightness is high, the 3D projection arrangement and the 3D projecting method of compact conformation and signal Synchronization.
For solving the problems of the technologies described above, the present invention provides a kind of 3D projection arrangement, comprising:
Light source, it sends a light beam; Light splitting device, it is arranged on the beam path that light source sends, and light beam is divided into mutually perpendicular P polarized light in polarization direction and S polarized light, and it is through the P polarized light, reflection S polarized light, the beam path of P polarized light and S polarized light is orthogonal;
The rotation display panels, two of quantity, its polarity is opposite; On the beam path that is located at the P polarized light, and vertical with beam path, the P polarized light is reflected into the S polarized light; Another is arranged on the beam path of S polarized light, and the S polarized light is reflected into the P polarized light;
Screen, it is with the photoimaging that receives.
Another kind of 3D projection arrangement provided by the invention comprises:
Light source is used to send light beam;
Light splitting device; Be arranged on the beam path that light source sends, and light beam is divided into mutually perpendicular P polarized light in polarization direction and S polarized light, said light splitting device is through the S polarized light; The reflected P polarized light, the beam path of P polarized light and S polarized light is orthogonal;
The rotation display panels, quantity is two, its polarity is opposite; On the beam path that is located at the P polarized light, and vertical with beam path, the P polarized light is reflected into the S polarized light; Another is arranged on the beam path of S polarized light, and the S polarized light is reflected into the P polarized light;
Screen, it is with the polarized light imaging that receives.
Be light realization polarization spectro, the present invention improves to be had, and said light splitting device is a PS polarization spectro-film sheet.
For further realizing polarization spectro, the present invention improves to be had, and said light splitting device is the PBS Amici prism.
Light beam is handled, and the present invention improves to be had, and is being provided with the lens that light beam carried out shaping and collimation between light source and the light splitting device or between light splitting device and the screen along beam path.
Unresolved above-mentioned technical matters, the present invention further provides a kind of 3D projecting method, may further comprise the steps:
Step 1. light source sends illuminating bundle;
The said illuminating bundle of step 2. is divided into mutually perpendicular P polarized light in polarization direction and S polarized light through light splitting device, and the P polarized light is through light splitting device, and the S polarized light is reflected, and the beam path of P polarized light and S polarized light is perpendicular;
Step 3.P polarized light becomes the S polarized light through light splitting device and by vertical reflection, and S polarized light vertical reflection becomes the P polarized light;
S polarized light after step 4. reflection is through the light splitting device reflection, and the P polarized light after the reflection passes through light splitting device;
Step 5.S polarized light and the imaging of P polarized light.
For improving the precision of light beam, the present invention improves to be had, and the illuminating bundle that said step 1 is sent is handled through shaping and collimation.
Be light realization polarization spectro, the present invention improves to be had, and said light splitting device is a PS polarization spectro-film sheet.
For further realizing polarization spectro, the present invention improves to be had, and said light splitting device is the PBS Amici prism.
The invention has the beneficial effects as follows: compact conformation, production are assembled simple to operation; Use same light source, same projection lens, adjustment easily, high conformity, easy to use; Improve the utilization factor of luminous energy; Change the polarization direction through opposite polarity Lcos, through discover the 3D projection arrangement of producing in the past, the major technology problem is that light path is asynchronous, focusing performance is poor; Pixel is low, and its signal is hard to keep synchronously, and the right and left eyes signal errors is easy to generate shortcomings such as position deviation; Make the beholder produce spinning sensation easily; And cause that this technological basic reason is " being provided with 1/2 zone plate ", and two opposite polarity Lcos liquid crystal chips are set instead, reduce cost, made the light of light source almost can both arrive on the screen; Simplified light channel structure, the P light that makes is consistent with the distance of S light two-way polarized light; Guarantee on identical projector distance, to form images, the right and left eyes picture all be imaged on the same screen, and light path of the present invention synchronously, good condensing performance, high, the signal Synchronization of pixel, brightness is high.
Description of drawings
Accompanying drawing 1 is the structural representation of embodiments of the invention one;
Accompanying drawing 2 is the structural representation of embodiments of the invention two.
Label declaration: 1-light source; The 2-light splitting device; 3-rotates display panels; The 4-screen; The 5-lens.
Embodiment
By specifying technology contents of the present invention, structural attitude, realized purpose and effect, give explanation below in conjunction with embodiment and conjunction with figs. are detailed.
The present invention provides a kind of 3D projecting method, may further comprise the steps:
Step 1. light source 1 sends illuminating bundle;
The said illuminating bundle of step 2. is divided into mutually perpendicular P polarized light in polarization direction and S polarized light through light splitting device 2, and the P polarized light is through light splitting device 2, and the S polarized light is reflected, and the beam path of P polarized light and S polarized light is perpendicular;
Step 3.P polarized light becomes the S polarized light through light splitting device 2 and by vertical reflection, and S polarized light vertical reflection becomes the P polarized light;
S polarized light after step 4. reflection is through light splitting device 2 reflections, and the P polarized light after the reflection is through light splitting device 2;
Step 5.S polarized light and the imaging of P polarized light.
According to this method a kind of 3D projection arrangement is provided further in the present embodiment, comprises: light source 1, it sends a light beam;
Screen 4, it is with the photoimaging that receives.
Specific as follows, light source 1 sends light beam, arrives light splitting device 2; In one embodiment, with reference to accompanying drawing 2, light splitting device shown in the accompanying drawing 2 is the PBS Amici prism; In another embodiment, with reference to accompanying drawing 1, light splitting device shown in the accompanying drawing 2 is a PS polarization spectro-film sheet; These two kinds of light splitting device 2 all are that light beam is divided into P polarized light and S polarized light, are not restricted to PBS Amici prism and PS polarization spectro-film sheet, and wherein the angle of the light splitting surface setting of light splitting device 2 and beam direction is 45 degree; Light beam has two kinds of embodiment when arriving light splitting device 2, a kind of is that the S polarized light passes through light splitting device 2, and the P polarized light is reflected; Another kind of embodiment be the P polarized light through light splitting device 2, reflection S polarized light is reflected, the beam angle between two polarized lights is 90 degree.
With reference to accompanying drawing 1 and accompanying drawing 2, shown in the accompanying drawing through light splitting device 2 for the P polarized light is an example, through the P polarized light after the light splitting device 2 through the rotation display panels 3 (being Lcos); Lcos is vertically set on the beam path of P polarized light; And the P polarized light reflected, make the P polarized light be transformed into the S polarized light after the reflection, this S polarized light is for the second time through light splitting device 2; Because S light is reflected, S light gets into screen imaging.
On the other hand, the S polarized light that is reflected through light splitting device 2 for the first time rotates display panels 3 (being Lcos) through another, and Lcos is vertically set on the beam path of S polarized light; And the S polarized light reflected; S polarized light after the reflection is transformed into the P polarized light, and this P polarized light passes through the polarized light light-dividing device for the second time, and through light splitting device 2; And, realize 3D effect on same screen 4, forming images with the S polarized light that passes through light splitting device 2 the above-mentioned second time.
Compact conformation, production are assembled simple to operation; Use same light source 1, same projection lens, adjustment easily, high conformity, easy to use; Improve the utilization factor of luminous energy; Change the polarization direction through opposite polarity Lcos, the logical 3D projection arrangement of discovering production does not have " 1/2 zone plate ", and neither one 1/2 zone plate is simplified light channel structure, makes S consistent with P two-way light path in addition; Guarantee imaging on the same projection distance; Reduced cost, made the light of light source 1 almost can both arrive on the screen, the right and left eyes picture all is imaged on the same screen, and light path of the present invention synchronously, good condensing performance, high, the signal Synchronization of pixel, brightness is high.
In the another embodiment of the present invention, between light source 1 and light splitting device 2, be provided with the lens 5 that light beam carried out shaping and collimation, also can between light splitting device 2 and screen 4, lens be set along beam path.
The illuminating bundle that 5 pairs of light sources 1 of scioptics send carries out shaping and collimation.
The above is merely embodiments of the invention; Be not so limit claim of the present invention; Every equivalent structure or equivalent flow process conversion that utilizes instructions of the present invention and accompanying drawing content to be done; Or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present invention.
Claims (9)
1. a 3D projection arrangement is characterized in that, comprising:
Light source is used to send light beam;
Light splitting device; Be arranged on the beam path that light source sends, and light beam is divided into mutually perpendicular P polarized light in polarization direction and S polarized light, said light splitting device is through the P polarized light; Reflection S polarized light, the beam path of P polarized light and S polarized light is orthogonal;
The rotation display panels, quantity is two, its polarity is opposite; On the beam path that is located at the P polarized light, and vertical with beam path, the P polarized light is reflected into the S polarized light; Another is arranged on the beam path of S polarized light, and the S polarized light is reflected into the P polarized light;
Screen, it is with the polarized light imaging that receives.
2. a 3D projection arrangement is characterized in that, comprising:
Light source is used to send light beam;
Light splitting device; Be arranged on the beam path that light source sends, and light beam is divided into mutually perpendicular P polarized light in polarization direction and S polarized light, said light splitting device is through the S polarized light; The reflected P polarized light, the beam path of P polarized light and S polarized light is orthogonal;
The rotation display panels, quantity is two, its polarity is opposite; On the beam path that is located at the P polarized light, and vertical with beam path, the P polarized light is reflected into the S polarized light; Another is arranged on the beam path of S polarized light, and the S polarized light is reflected into the P polarized light;
Screen, it is with the polarized light imaging that receives.
3. 3D projection arrangement according to claim 1 and 2 is characterized in that, said light splitting device is a PS polarization spectro-film sheet.
4. 3D projection arrangement according to claim 1 and 2 is characterized in that, said light splitting device is the PBS Amici prism.
5. 3D projection arrangement according to claim 1 and 2 is characterized in that, is being provided with the lens that light beam carried out shaping and collimation on the beam path between light source and the light splitting device or between light splitting device and the screen.
6. a 3D projecting method is characterized in that, may further comprise the steps:
Step 1. light source sends illuminating bundle;
The said illuminating bundle of step 2. is divided into mutually perpendicular P polarized light in polarization direction and S polarized light through light splitting device, and the P polarized light is through light splitting device, and the S polarized light is reflected, and the beam path of P polarized light and S polarized light is perpendicular;
Step 3.P polarized light becomes the S polarized light through light splitting device and by vertical reflection, and S polarized light vertical reflection becomes the P polarized light;
S polarized light after step 4. reflection is through the light splitting device reflection, and the P polarized light after the reflection passes through light splitting device;
Step 5.S polarized light and the imaging of P polarized light.
7. 3D projecting method according to claim 6 is characterized in that, the illuminating bundle that said step 1 is sent is handled through shaping and collimation.
8. 3D projecting method according to claim 6 is characterized in that, said light splitting device is a PS polarization spectro-film sheet.
9. 3D projecting method according to claim 6 is characterized in that, said light splitting device is the PBS Amici prism.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110303481XA CN102360156A (en) | 2011-09-29 | 2011-09-29 | 3D (three-dimensional) protection device and 3D projection method |
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| CN201110303481XA CN102360156A (en) | 2011-09-29 | 2011-09-29 | 3D (three-dimensional) protection device and 3D projection method |
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| CN103217863A (en) * | 2013-04-11 | 2013-07-24 | 雷欧尼斯（北京）信息技术有限公司 | Polarization three-dimensional (3D) system based on polarized light recycling |
| CN104460206A (en) * | 2014-11-29 | 2015-03-25 | 杨毅 | Light emitting device and projection device |
| CN107272307A (en) * | 2016-04-08 | 2017-10-20 | 信泰光学(深圳)有限公司 | Projection arrangement |
| CN107589618A (en) * | 2017-10-23 | 2018-01-16 | 杭州光粒科技有限公司 | The micro projection system of high refresh rate and the method for improving micro-display refresh rate |
| CN115145097A (en) * | 2022-07-20 | 2022-10-04 | 深圳市科金明电子股份有限公司 | Two-piece type 3D projection system and imaging method thereof |
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| CN103217863A (en) * | 2013-04-11 | 2013-07-24 | 雷欧尼斯（北京）信息技术有限公司 | Polarization three-dimensional (3D) system based on polarized light recycling |
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| CN115145097A (en) * | 2022-07-20 | 2022-10-04 | 深圳市科金明电子股份有限公司 | Two-piece type 3D projection system and imaging method thereof |
| CN115145097B (en) * | 2022-07-20 | 2024-01-16 | 深圳市科金明电子股份有限公司 | Two-piece type 3D projection system and imaging method thereof |
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Application publication date: 20120222 |