CN104954775A - Three-optical-path polarizing light-splitting stereoscopic video conversion system - Google Patents
Three-optical-path polarizing light-splitting stereoscopic video conversion system Download PDFInfo
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- CN104954775A CN104954775A CN201410123896.2A CN201410123896A CN104954775A CN 104954775 A CN104954775 A CN 104954775A CN 201410123896 A CN201410123896 A CN 201410123896A CN 104954775 A CN104954775 A CN 104954775A
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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 relates to a three-optical-path polarizing light-splitting stereoscopic video conversion system. The system comprises a polarizing light-splitting device which comprises a first polarizing light-splitting layer and a second polarizing light-splitting layer. The first and second polarizing light-splitting layers are intersected with each other. The first polarizing light-splitting layer is used for enabling a received natural light video image to be guided to a first side path and a main path. The second polarizing light-splitting layer is used for enabling the received natural light video image to be guided to a second side path and the main path. The system also comprises two reflecting devices; a compensating mirror disposed on the main path; a half-wave plate which is disposed on the main path or the side paths; a synchronous controller and three identical liquid crystal optical rotation devices in electrical connection with the synchronous controller. The synchronous controller is used for synchronously driving the three liquid crystal optical rotation devices to change the polarization state of incident polarized light according to the left-right eye synchronizing signals, and alternately generating levorotatory rotatory polarization light and dextrorotatory rotatory polarization light. Through the above mode, the system can obtain a higher lighting effect, is easy to achieve image alignment, and is high in imaging quality.
Description
Technical field
The present invention relates to stereo display technique field, particularly relate to a kind of three light path polarization spectro three-dimensional video-frequency converting systems.
Background technology
Three-dimensional film projection system, needs there will be two width video pictures of parallax, is sent to the images of left and right eyes of beholder respectively, then through the synthesis of remarkable brain, produces third dimension.Existing technology mainly contains left and right polarization spectro mode, the red blue spectroscopic modes of the left and right shutter release method of synchronization and left and right.
Wherein, left and right polarization spectro mode is the movie theatre perspective transformations mode the most generally used, and mainly contains monochromatic light road polarization spectro (shown in Fig. 1) and double light path polarization spectro (shown in Fig. 2) at present.Fig. 1 is the structural representation of the monochromatic light road polarization spectro three-dimensional video-frequency converting system of prior art, and Fig. 2 is the structural representation of the double light path polarization spectro three-dimensional video-frequency converting system of prior art.
Refer to Fig. 1, the natural daylight video image of projector projection incides after on polarizer 11, only has polarization direction to be parallel to the light in the direction that thoroughly shakes of polarizer 11 by inciding on liquid crystal rotating plate 12.Liquid crystal isochronous controller 13 drives liquid crystal board 12 Time Division Synchronous to change the polarization direction of the polarised light incided on liquid crystal board 12, alternately produces orthogonal first polarised light in polarization direction and the second polarised light.First polarised light and the second polarised light through horizontal parallax picture through the polaroid glasses selectivity of observer, make the right and left eyes of people can only see respective horizontal parallax image, thus form 3d picture at human brain.This mode system is simple, easily realize, but it can lose luminous flux over half, and therefore picture is partially dark, and optical efficiency is low.
Refer to Fig. 2, the natural daylight video image light of projector projection generates the orthogonal polarised light in two-way polarization direction after polarization spectro plate 21, first via polarised light enters main path through polarization spectro plate 21, and another road polarised light is polarized beam-splitter 21 and is reflected into side path.Side path being provided with speculum 22, for reflecting the second road polarised light, side path light being overlapped with main path light on the imaging screen of projector.Main path is provided with compensator 23, to compensate the optical path difference of main path polarised light and side path polarised light.In addition, side path is also provided with half-wave plate 24, makes the polarization direction of side path polarised light consistent with the polarization direction of main path polarised light.Can certainly half-wave plate 24 be arranged on main path, two-way light polarization direction can be made equally identical.Then, recycle same liquid crystal isochronous controller 26 and synchronously drive liquid crystal board 25 timesharing be separately positioned on main path and side path to change two-way polarisation of light direction, alternately generation first polarised light and the second polarised light.
Refer to Fig. 3, Fig. 3 is the principle schematic of the two-way light contraposition of the double light path polarization spectro three-dimensional video-frequency converting system shown in Fig. 2.In Fig. 3, arrow represents the direction of propagation of light.As shown in Figure 3, the whole picture light of the natural daylight video image of projector projection is divided into two-way light through polarization spectro plate 21, a direct transmission in road, and another road is reflected.Reverberation overlaps with the light of polarization spectro plate 21 transmission after speculum 22 reflects on imaging screen again.The two-way light picture separated due to polarization spectro plate 21 is all whole picture, so the deviation angle changing rate of light is large, picture registration regulated quantity is larger, and image deformation is also larger.
Therefore, double light path polarization spectro three-dimensional video-frequency converting system is compared to monochromatic light road polarization spectro three-dimensional video-frequency converting system, although light efficiency can improve more than 100%, image quality is high, but the contraposition difficulty of the video pictures in main optical path and sidelight road is high, be not easy to realize.
For solving the problems of the technologies described above, the invention provides a kind of three light path polarization spectro three-dimensional video-frequency converting systems.
Summary of the invention
The present invention is mainly and solves that existing monochromatic light road polarization spectro three-dimensional video-frequency converting system light efficiency is low, the technical problem of double light path polarization spectro three-dimensional video-frequency converting system image alignment difficulty, provides three light path polarization spectro three-dimensional video-frequency converting systems of a kind of specular removal, easy fitted, high imaging quality.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: provide a kind of three light path polarization spectro three-dimensional video-frequency converting systems, comprising:
Light splitting device, comprise the first crossing polarization spectro layer and the second polarization spectro layer, first polarization spectro layer is for receiving natural daylight video image light and led main path and the first side path, second polarization spectro layer is for receiving natural daylight video image light and led main path and the second side path, and the first polarization spectro layer is identical with the direction that thoroughly shakes of the second polarization spectro layer, reverberation polarization direction is also identical;
Two reflection units, are arranged on the first side path, on the second side path respectively, the two-way light coincidence that a reflection unit separates for making the first polarization spectro layer, the two-way light coincidence that another reflection unit separates for making the second polarization spectro layer;
Compensating glass, is arranged on main path, for compensating the optical path difference through main path and side path;
Half-wave plate, is arranged on main path or side path, for making three tunnel light polarization in the same way;
An isochronous controller and the identical liquid crystal optically-active device of three of being electrically connected with it, described three liquid crystal optically-active devices are arranged on main path, the first side path, the second side path respectively, isochronous controller is used for synchronously driving three liquid crystal optically-active devices to change the polarization state entering the polarised light of liquid crystal optically-active device according to right and left eyes synchronizing signal, alternately produces left-handed rotatory polarization and dextrorotation rotatory polarization.
In a preferred embodiment of the invention, described driving liquid crystal cell comprises along the direction of transfer of incident light the first glass plate arranged in parallel successively, first conductive layer, first liquid crystal layer, second conductive layer and the second glass plate, described first conductive layer and the second conductive layer are transparency conducting layer, described first conductive layer is arranged on the first glass plate, described second conductive layer is arranged on the second glass plate, described compensation liquid crystal cell comprises the 3rd conductive layer along driving the beam projecting direction of liquid crystal cell arranged in parallel successively, second liquid crystal layer, 4th conductive layer and the 3rd glass plate, described 3rd conductive layer and the 4th conductive layer are transparency conducting layer, 3rd conductive layer is arranged on the second glass plate, described 4th conductive layer is arranged on the 3rd glass plate.
In a preferred embodiment of the invention, described driving liquid crystal cell comprises along the direction of transfer of incident light the first glass plate arranged in parallel successively, first conductive layer, first liquid crystal layer, second conductive layer and the second glass plate, described first conductive layer and the second conductive layer are transparency conducting layer, described first conductive layer is arranged on the first glass plate, described second conductive layer is arranged on the second glass plate, described compensation liquid crystal cell comprises the 4th glass plate along driving the beam projecting direction of liquid crystal cell arranged in parallel successively, 3rd conductive layer, second liquid crystal layer, 4th conductive layer and the 3rd glass plate, described 3rd conductive layer and the 4th conductive layer are transparency conducting layer, 3rd conductive layer is arranged on the 4th glass plate, described 4th conductive layer is arranged on the 3rd glass plate.
Preferably, described light splitting device comprises two transparency carriers utilizing parts locate mode to be set together, described first polarization spectro layer is arranged on the first transparency carrier, described second polarization spectro layer is arranged on the second transparency carrier, described first polarization spectro layer is arranged on the first transparency carrier by the mode of plated film or pad pasting, and described second polarization spectro layer is arranged on the second transparency carrier by the mode of plated film or pad pasting.
Preferably, described light splitting device comprises isosceles prism and two contact the first right-angle prisms and the second right-angle prism that arrange, and the irradiation of stupefied of the right-angle side place of the first right-angle prism and the second right-angle prism joint reception natural daylight video image light, and the first right-angle prism is parallel with the right-angle side that the second right-angle prism connects, the hypotenuse of described first right-angle prism and the second right-angle prism is isometric
Wherein, described first polarization spectro layer and the second polarization spectro layer are arranged on stupefied of the hypotenuse place of the first right-angle prism and the second right-angled edge respectively by plated film or pad pasting mode, stupefied of described isosceles prism two waist place is glued together with the first polarization spectro layer and the second polarization spectro layer respectively and arranges, or
Described first polarization spectro layer and the second polarization spectro layer are arranged on stupefied of isosceles prism two waist place respectively by plated film or pad pasting mode, and the first polarization spectro layer and the second polarization spectro layer glue together on stupefied of the hypotenuse place being arranged at two right-angled triangles respectively.
In a preferred embodiment of the invention, described compensating glass gummed is arranged on stupefied of the place, base of isosceles prism.
Preferably, described light splitting device comprises pentagonal prism and isosceles prism, and described pentagonal prism has two adjacent right angles, acute angle equal with two that two right angles close on respectively and the 5th angle, and the two articles of limits forming the 5th angle are equal, and the 5th angle is recessed inner to pentagonal prism
Wherein, described first polarization spectro layer and the second polarization spectro layer are arranged on stupefied of the place, two articles of limits at the 5th angle respectively by plated film or pad pasting mode, described first polarization spectro layer and the second polarization spectro layer glue together on individual stupefied that is arranged at isosceles prism two waist place respectively, or
Described first polarization spectro layer and the second polarization spectro layer are arranged on individual stupefied of isosceles prism two waist place respectively by plated film or pad pasting mode, and described first polarization spectro layer and the second polarization spectro layer glue together on stupefied of the place, two articles of limits being arranged at the 5th angle respectively.
Preferably, described compensating glass gummed is arranged on stupefied of the place, base of isosceles prism.
Preferably, described light splitting device comprises isosceles prism further, and described first polarization spectro layer and the second polarization spectro layer are arranged on stupefied of isosceles prism two waist place respectively by plated film or pad pasting mode.
In a preferred embodiment of the invention, described compensating glass gummed is arranged on stupefied of the place, base of isosceles prism.
Preferably, described reflection unit is plane or curved reflector.
The invention has the beneficial effects as follows: the situation being different from prior art, three light path polarization spectro three-dimensional video-frequency converting systems of the present invention utilize the light splitting device with two polarization spectro floor that one tunnel video image light is divided into three road light, the two-beam that recycling reflection unit makes each polarization spectro layer separate overlaps on imaging screen, not only can obtain higher light efficiency and the difficulty of light contraposition can be reduced, improve image quality, be easy to realize.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of monochromatic light road of prior art polarization spectro three-dimensional video-frequency converting system;
Fig. 2 is the structural representation of a kind of double light path polarization spectro of prior art three-dimensional video-frequency converting system;
Fig. 3 is the contraposition principle schematic of the two-way light of the double light path polarization spectro three-dimensional video-frequency converting system shown in Fig. 2;
Fig. 4 is the structural representation of the first embodiment of three light path polarization spectro three-dimensional video-frequency converting systems of the present invention;
Fig. 5 is three light path contraposition principle schematic of three light path polarization spectro three-dimensional video-frequency converting systems 30 shown in Fig. 4;
Fig. 6 is the structural representation of an embodiment of the liquid crystal optically-active device 36 of three light path polarization spectro three-dimensional video-frequency converting systems 30 shown in Fig. 4;
Fig. 7 is the structural representation of the second embodiment of three light path polarization spectro three-dimensional video-frequency converting systems of the present invention;
Fig. 8 is the structural representation of the 3rd embodiment of three light path polarization spectro three-dimensional video-frequency converting systems of the present invention;
Fig. 9 is the structural representation of the 4th embodiment of three light path polarization spectro three-dimensional video-frequency converting systems of the present invention;
Figure 10 is the structural representation of the 5th embodiment of three light path polarization spectro three-dimensional video-frequency converting systems of the present invention;
Figure 11 is the structural representation of the 6th embodiment of three light path polarization spectro three-dimensional video-frequency converting systems of the present invention;
Figure 12 is the structural representation of the 7th embodiment of three light path polarization spectro three-dimensional video-frequency converting systems of the present invention;
Figure 13 is the principle sketch that in three light path polarization spectro three-dimensional video-frequency converting systems 30 shown in the Fig. 4 shown in Fig. 4, isochronous controller drives Double liquid crystal box.
Embodiment
Refer to Fig. 4, Fig. 4 is the structural representation of the first embodiment of three light path polarization spectro three-dimensional video-frequency converting systems of the present invention.As shown in Figure 4, the three light path polarization spectro three-dimensional video-frequency converting systems 30 of the present embodiment mainly to comprise in light splitting device 31(Fig. 4 shown in dotted line frame), two reflection units 32 and 33, half-wave plate 34, compensating glass 35, three liquid crystal optically-active devices 36 and isochronous controllers 37.
In the present embodiment, two transparency carriers 313 and 314 that light splitting device 31 comprises the first crossing polarization spectro layer 311, second polarization spectro layer 312 and utilizes parts locate mode to be set together, first polarization spectro layer 311 is arranged on the first transparency carrier 313, second polarization spectro layer 312 is arranged on the second transparency carrier 314, and the first polarization spectro layer 311 and the second polarization spectro layer 312 are arranged on the first transparency carrier 313 and the second transparency carrier 314 respectively by the mode of plated film or pad pasting.
In the present embodiment, the first polarization spectro layer 311 is for led after receiving natural daylight video image light main path and the first side path, and the second polarization spectro layer 312 is for led after receiving natural daylight video image light main path and the second side path.Wherein, the polarised light on main path is vertical with polarised light polarization direction on side path.
In the present embodiment, two transparency carrier 313 and 314 preferably clear glass substrates can certainly be that other can substitute the transparent material substrate of glass substrate function.
The first polarization spectro layer 311 in the present embodiment and the second polarization spectro layer 312 also can be arranged at respectively transparency carrier 313 and 314 towards on the face of main path, the present invention is not restricted this.
In the present embodiment, reflection unit 32 and 33 is arranged on the first side path and the second side path respectively.Reflection unit 32 for collecting the polarised light that reflects through the first polarization spectro layer 311 and being directed to picture screen, and overlaps when making the two-way image light of separating through the first polarization spectro layer 311 arrive imaging screen.Reflection unit 33 for collecting the polarised light that reflects through the second polarization spectro layer 312 and being directed to picture screen, and makes the two-way light that separates through the second polarization spectro layer 312 overlap when arriving imaging screen.
In the present embodiment, reflection unit 32 and 33 can be plane mirror, also can adopt curved reflector, can also be that the form of combined lens is to reach same object of the present invention.
Refer to Fig. 5, Fig. 5 is three light path contraposition principle schematic of three light path polarization spectro three-dimensional video-frequency converting systems shown in Fig. 4.As shown in Figure 5, the first half parts of images light of whole natural daylight video image are directed to the first side path and main path after the first polarization spectro layer 311, the reflection unit 32 that first side path is arranged for collect by the first polarization spectro layer 311 lead the first path polarised light and be directed to picture screen, and the two-way image light that the first polarization spectro layer 311 is separated overlaps when arriving on imaging screen.In like manner, the second half parts of images light of whole natural daylight video image light first reflect through reflection unit 33 after the light splitting of the second polarization spectro layer 312 again, and separated two-way light overlaps when arriving imaging screen.
Therefore, the advantage of the three light path polarization spectro three-dimensional video-frequency converting systems 30 of the present embodiment is: only need realize every half parts of images light contraposition, deflection of light is smaller, and picture registration regulates little, and regulate more convenient, image deformation is little.
In the present embodiment, in order to compensate the optical path difference between the polarised light on two side paths on polarised light and main path, main path is also provided with compensating glass 35.
In the present embodiment, two side paths are also provided with half-wave plate 34, only can certainly arrange half-wave plate 34 on main path, half-wave plate 34 is consistent with the polarization direction of the polarised light of main path for being adjusted to the polarization direction of the polarised light on two side paths.
In the present embodiment, three liquid crystal optically-active devices 36 are arranged on three paths respectively, and three liquid crystal optically-active devices 36 are electrically connected an isochronous controller 37.The polarization state of isochronous controller 37 for synchronously driving three identical liquid crystal optically-active devices 36 to change incident polarized light according to right and left eyes synchronizing signal, alternately to produce left circularly polarized light and right-circularly polarized light, timesharing enters the images of left and right eyes of observer, through the polaroid glasses matched, make observer can watch 3D video image.
In an embodiment of the present invention, liquid crystal optically-active device 36 can be single box liquid-crystal apparatus.
Refer to Fig. 6, Fig. 6 is the structural representation of a preferred embodiment of the liquid crystal optically-active device 36 of three light path polarization spectro three-dimensional video-frequency converting systems 30 shown in Fig. 4.As shown in Figure 6, liquid crystal optically-active device 36 comprises driving liquid crystal cell 361 and compensates liquid crystal cell 362.The electrode driving liquid crystal cell 361 and compensation liquid crystal cell 362 to close on can be all positive electrode or be all negative electrode.
In Fig. 6, liquid crystal cell 361 is driven to comprise along the direction of transfer of incident light the first glass plate, the first conductive layer, the first liquid crystal layer, the second conductive layer and the second glass plate arranged in parallel successively.Wherein, the first conductive layer and the second conductive layer are transparency conducting layer, and the first conductive layer is arranged on the first glass plate, and the second conductive layer is arranged on the second glass plate.Compensate liquid crystal cell 362 to comprise along the beam projecting direction of driving liquid crystal cell the 4th glass plate, the 3rd conductive layer, the second liquid crystal layer, the 4th conductive layer and the 3rd glass plate arranged in parallel successively.Wherein, the 3rd conductive layer and the 4th conductive layer are transparency conducting layer, and the 3rd conductive layer is arranged on the 4th glass plate, and the 4th conductive layer is arranged on the 3rd glass plate.Wherein, the conductive layer in the present embodiment and adjacent glass plate are set together by gummed mode.
In another preferred embodiment of liquid crystal optically-active device 36 of the present invention, compensate liquid crystal cell 362 and do not comprise the 4th glass plate, 3rd conductive layer preferably glues together and is arranged on the second glass plate, makes to drive liquid crystal cell 361 and compensate liquid crystal cell 362 to share a glass plate.
Refer to Figure 13, Figure 13 is the principle sketch that in three light path polarization spectro three-dimensional video-frequency converting systems 30 shown in Fig. 4, isochronous controller drives Double liquid crystal box.As shown in figure 13, isochronous controller 37 applies the alternating voltage staggered with the height of right and left eyes synchronizing signal synchronous change to driving liquid crystal cell 361 and compensating liquid crystal cell 362, makes incident linearly polarized light after liquid crystal whirligig 36, become left-handed rotatory polarization alternately and dextrorotation rotatory polarization.
In other embodiments of liquid crystal optically-active device 36 of the present invention, other structures also can be adopted to reach same object of the present invention, and the present invention is not restricted this.
Refer to Fig. 7, Fig. 7 is the structural representation of the second embodiment of three light path polarization spectro three-dimensional video-frequency converting systems of the present invention.In Fig. 7, three light path polarization spectro three-dimensional video-frequency converting systems 40 mainly comprise light splitting device 41, two reflection units 42 and 43, half-wave plate 44, compensating glass 45, three liquid crystal optically-active devices 46 and isochronous controller 47.The three light path polarization spectro three-dimensional video-frequency converting systems 40 of the present embodiment are different from three light path polarization spectro three-dimensional video-frequency converting systems 30 of the first embodiment to be: light splitting device 41 comprises the first crossing 412, two, polarization spectro layer 411, second polarization spectro layer and to contact the first right-angle prism 413 and the second right-angle prism 414, the isosceles prism 415 arranged.Wherein, the irradiation of stupefied the reception natural daylight video image light at the right-angle side place of the first right-angle prism 413 and the second right-angle prism 414 joint, and the first right-angle prism 413 is parallel with the right-angle side that the second right-angle prism 414 connects, the hypotenuse of the first right-angle prism 413 and the second right-angle prism 414 is isometric.
In Fig. 7, the first structure of light splitting device 41 is: the first polarization spectro layer 411 and the second polarization spectro layer 412 are arranged on stupefied of the hypotenuse place of the first right-angle prism 413 and the second right-angled edge 414 respectively by plated film or pad pasting, and stupefied of isosceles prism 415 liang of waist places is glued together with the first polarization spectro layer 411 and the second polarization spectro layer 412 respectively and arrange.
In Fig. 7, the second structure of light splitting device 41 is: the first polarization spectro layer 411 and the second polarization spectro layer 412 are arranged on stupefied of isosceles prism 415 liang of waist places respectively by plated film or pad pasting, and stupefied of the hypotenuse place of the first right-angle prism 413 and the second right-angled edge 414 glues together with stupefied of isosceles prism 415 liang of waist places respectively and arrange.
Refer to Fig. 8, Fig. 8 is the structural representation of the 3rd embodiment of three light path polarization spectro three-dimensional video-frequency converting systems of the present invention.As shown in Figure 8, in Fig. 8, three light path polarization spectro three-dimensional video-frequency converting systems 50 mainly comprise light splitting device 51, two reflection units 52 and 53, half-wave plate 54, compensating glass 55, three liquid crystal optically-active devices 56 and isochronous controller 57.In the present embodiment, light splitting device 51 comprises the first polarization spectro layer 511, second polarization spectro layer 512, first right-angle prism 513, second right-angle prism 514 and isosceles prism 515.The difference of the three light path polarization spectro three-dimensional video-frequency converting systems 50 of the present embodiment and three light path polarization spectro three-dimensional video-frequency converting systems 40 of the second embodiment is: compensating glass 55 glues together on stupefied of the place, base being arranged at isosceles prism.
Refer to Fig. 9, Fig. 9 is the structural representation of the 4th embodiment of three light path polarization spectro three-dimensional video-frequency converting systems of the present invention.As shown in Figure 9, three light path polarization spectro three-dimensional video-frequency converting systems 60 mainly comprise light splitting device 61, two reflection units 62 and 63, half-wave plate 64, compensating glass 65, three liquid crystal optically-active devices 66 and isochronous controller 67.
In the present embodiment, light splitting device 61 comprises the first polarization spectro layer 611, second polarization spectro layer 612, pentagonal prism 613 and isosceles prism 614, pentagonal prism 613 has two adjacent right angles, acute angle equal with two that two right angles close on respectively and the 5th angle, the two articles of limits forming the 5th angle are equal, and the 5th angle is recessed inner to pentagonal prism.
The difference of the three light path polarization spectro three-dimensional video-frequency converting systems 60 of the present embodiment and three light path polarization spectro three-dimensional video-frequency converting systems 30 of the first embodiment is:
First polarization spectro layer 611, second polarization spectro layer 612 is arranged on stupefied of the place, two articles of limits at pentagonal prism 613 the 5th angle respectively by the mode of plated film or pad pasting, and the first polarization spectro layer 611, second polarization spectro layer 612 glues together on stupefied that is arranged at isosceles prism 614 liang of waist places respectively, or
First polarization spectro layer 611 and the second polarization spectro layer 612 are arranged on individual stupefied of isosceles prism 614 liang of waist places respectively by plated film or pad pasting mode, and the first polarization spectro layer 611 and the second polarization spectro layer 612 glue together on stupefied of the place, two articles of limits being arranged at isosceles prism 614 the 5th angle respectively.
Refer to Figure 10, Figure 10 is the structural representation of the 5th embodiment of three light path polarization spectro three-dimensional video-frequency converting systems of the present invention.The three light path polarization spectro three-dimensional video-frequency converting systems 70 of the present embodiment are with the difference of three light path polarization spectro three-dimensional video-frequency converting systems 60 shown in Fig. 7: compensating glass 75 is arranged on stupefied of the place, base of isosceles prism 714, and preferred compensation mirror 75 gummed is arranged on stupefied of the place, base of isosceles prism 714.
Refer to Figure 11, Figure 11 is the structural representation of the 6th embodiment of three light path polarization spectro three-dimensional video-frequency converting systems of the present invention.The three light path polarization spectro three-dimensional video-frequency converting systems 80 of the present embodiment mainly comprise light splitting device 81, two reflection units 82 and 83, half-wave plate 84, compensating glass 85, three liquid crystal optically-active devices 86 and isochronous controller 87.
The three light path polarization spectro three-dimensional video-frequency converting systems 80 of the present embodiment and three light path polarization spectro three-dimensional video-frequency converting system 30 differences of the first embodiment are, light splitting device 81 comprises the first polarization spectro layer 811, first polarization spectro layer 812, isosceles prism 813.First polarization spectro layer 811 and the second polarization spectro layer 812 are arranged on stupefied of isosceles prism 813 liang of waist places by plated film or pad pasting mode.
Refer to Figure 12, Figure 12 is the structural representation of the 7th embodiment of three light path polarization spectro three-dimensional video-frequency converting systems of the present invention.The three light path polarization spectro three-dimensional video-frequency conversion systems 90 of the present embodiment mainly comprise light splitting device 91, two speculums 92 and 93, half-wave plate 84, compensating glass 95, three liquid crystal optically-active devices 96 and isochronous controller 97.
The difference of the present embodiment and the 6th embodiment is: light splitting device 91 comprises the first polarization spectro layer 911, second polarization spectro layer 912 and isosceles prism 913, first polarization spectro layer 911 and the second polarization spectro layer 912 are arranged on stupefied of isosceles prism 913 liang of waist places by plated film or pad pasting mode, and compensating glass 95 is arranged on stupefied of the place, base of isosceles prism 913.In the present embodiment, preferred compensation mirror 95 gummed is arranged on stupefied of the place, base of isosceles prism 913.
Of the present invention second, third, the 4th, the 5th, the 6th and the 7th embodiment to the light splitting of the light splitting of natural daylight stereoscopic video images and contraposition principle and three light path polarization spectro three-dimensional video-frequency converting systems of the first embodiment of the present invention and contraposition principle identical, this is repeated no more.
By the way, three light path polarization spectro three-dimensional video-frequency converting systems of the present invention utilize the light splitting device with two polarization spectro floor that one tunnel video image light is divided into three road light, the two-beam that recycling reflection unit makes each polarization spectro layer separate overlaps on imaging screen, not only can obtain higher light efficiency and the difficulty of light contraposition can be reduced, improve image quality, be easy to realize.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every utilize specification of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (11)
1. three light path polarization spectro three-dimensional video-frequency converting systems, is characterized in that, described polarization spectro three-dimensional video-frequency converting system comprises:
Light splitting device, comprise the first crossing polarization spectro layer and the second polarization spectro layer, first polarization spectro layer is for receiving natural daylight video image light and led main path and the first side path, second polarization spectro layer is for receiving natural daylight video image light and led main path and the second side path, and the first polarization spectro layer is identical with the direction that thoroughly shakes of the second polarization spectro layer, reverberation polarization direction is also identical;
Two reflection units, are arranged on the first side path, on the second side path respectively, the two-way light coincidence that a reflection unit separates for making the first polarization spectro layer, the two-way light coincidence that another reflection unit separates for making the second polarization spectro layer;
Compensating glass, is arranged on main path, for compensating the optical path difference through main path and side path;
Half-wave plate, is arranged on main path or side path, for making three tunnel light polarization in the same way;
An isochronous controller and the identical liquid crystal optically-active device of three of being electrically connected with it, described three liquid crystal optically-active devices are arranged on main path, the first side path, the second side path respectively, isochronous controller is used for synchronously driving three liquid crystal optically-active devices to change the polarization state entering the polarised light of liquid crystal optically-active device according to right and left eyes synchronizing signal, alternately produces left-handed rotatory polarization and dextrorotation rotatory polarization.
2. three light path polarization spectro three-dimensional video-frequency converting systems according to claim 1, it is characterized in that, described driving liquid crystal cell comprises along the direction of transfer of incident light the first glass plate arranged in parallel successively, first conductive layer, first liquid crystal layer, second conductive layer and the second glass plate, described first conductive layer and the second conductive layer are transparency conducting layer, described first conductive layer is arranged on the first glass plate, described second conductive layer is arranged on the second glass plate, described compensation liquid crystal cell comprises the 3rd conductive layer along driving the beam projecting direction of liquid crystal cell arranged in parallel successively, second liquid crystal layer, 4th conductive layer and the 3rd glass plate, described 3rd conductive layer and the 4th conductive layer are transparency conducting layer, 3rd conductive layer is arranged on the second glass plate, described 4th conductive layer is arranged on the 3rd glass plate.
3. three light path polarization spectro three-dimensional video-frequency converting systems according to claim 1, it is characterized in that, described driving liquid crystal cell comprises along the direction of transfer of incident light the first glass plate arranged in parallel successively, first conductive layer, first liquid crystal layer, second conductive layer and the second glass plate, described first conductive layer and the second conductive layer are transparency conducting layer, described first conductive layer is arranged on the first glass plate, described second conductive layer is arranged on the second glass plate, described compensation liquid crystal cell comprises the 4th glass plate along driving the beam projecting direction of liquid crystal cell arranged in parallel successively, 3rd conductive layer, second liquid crystal layer, 4th conductive layer and the 3rd glass plate, described 3rd conductive layer and the 4th conductive layer are transparency conducting layer, 3rd conductive layer is arranged on the 4th glass plate, described 4th conductive layer is arranged on the 3rd glass plate.
4. three light path polarization spectro three-dimensional video-frequency converting systems according to claim 1, it is characterized in that, described light splitting device comprises two transparency carriers utilizing parts locate mode to be set together, described first polarization spectro layer is arranged on the first transparency carrier, described second polarization spectro layer is arranged on the second transparency carrier, described first polarization spectro layer is arranged on the first transparency carrier by the mode of plated film or pad pasting, and described second polarization spectro layer is arranged on the second transparency carrier by the mode of plated film or pad pasting.
5. three light path polarization spectro three-dimensional video-frequency converting systems according to claim 1, it is characterized in that, described light splitting device comprises isosceles prism and two contact the first right-angle prisms and the second right-angle prism that arrange, and the irradiation of stupefied of the right-angle side place of the first right-angle prism and the second right-angle prism joint reception natural daylight video image light, and the first right-angle prism is parallel with the right-angle side that the second right-angle prism connects, the hypotenuse of described first right-angle prism and the second right-angle prism is isometric
Wherein, described first polarization spectro layer and the second polarization spectro layer are arranged on stupefied of the hypotenuse place of the first right-angle prism and the second right-angled edge respectively by plated film or pad pasting mode, stupefied of described isosceles prism two waist place is glued together with the first polarization spectro layer and the second polarization spectro layer respectively and arranges, or
Described first polarization spectro layer and the second polarization spectro layer are arranged on stupefied of isosceles prism two waist place respectively by plated film or pad pasting mode, and the first polarization spectro layer and the second polarization spectro layer glue together on stupefied of the hypotenuse place being arranged at two right-angled triangles respectively.
6. three light path polarization spectro three-dimensional video-frequency converting systems according to claim 5, is characterized in that, described compensating glass gummed is arranged on stupefied of the place, base of isosceles prism.
7. three light path polarization spectro three-dimensional video-frequency converting systems according to claim 1, it is characterized in that, described light splitting device comprises pentagonal prism and isosceles prism, described pentagonal prism has two adjacent right angles, acute angle equal with two that two right angles close on respectively and the 5th angle, the two articles of limits forming the 5th angle are equal, and the 5th angle is recessed inner to pentagonal prism
Wherein, described first polarization spectro layer and the second polarization spectro layer are arranged on stupefied of the place, two articles of limits at the 5th angle respectively by plated film or pad pasting mode, described first polarization spectro layer and the second polarization spectro layer glue together on individual stupefied that is arranged at isosceles prism two waist place respectively, or
Described first polarization spectro layer and the second polarization spectro layer are arranged on individual stupefied of isosceles prism two waist place respectively by plated film or pad pasting mode, and described first polarization spectro layer and the second polarization spectro layer glue together on stupefied of the place, two articles of limits being arranged at the 5th angle respectively.
8. three light path polarization spectro three-dimensional video-frequency converting systems according to claim 7, is characterized in that, described compensating glass gummed is arranged on stupefied of the place, base of isosceles prism.
9. three light path polarization spectro three-dimensional video-frequency converting systems according to claim 1, it is characterized in that, described light splitting device comprises isosceles prism further, and described first polarization spectro layer and the second polarization spectro layer are arranged on stupefied of isosceles prism two waist place respectively by plated film or pad pasting mode.
10. three light path polarization spectro three-dimensional video-frequency converting systems according to claim 9, is characterized in that, described compensating glass gummed is arranged on stupefied of the place, base of isosceles prism.
11. three light path polarization spectro three-dimensional video-frequency converting systems according to claim 1, it is characterized in that, described reflection unit is plane or curved reflector.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410123896.2A CN104954775A (en) | 2014-03-28 | 2014-03-28 | Three-optical-path polarizing light-splitting stereoscopic video conversion system |
| PCT/CN2014/079235 WO2015143781A1 (en) | 2014-03-28 | 2014-06-05 | Three-light path polarized light-splitting stereographic video switching system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410123896.2A CN104954775A (en) | 2014-03-28 | 2014-03-28 | Three-optical-path polarizing light-splitting stereoscopic video conversion system |
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| CN104954775A true CN104954775A (en) | 2015-09-30 |
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| CN201410123896.2A Pending CN104954775A (en) | 2014-03-28 | 2014-03-28 | Three-optical-path polarizing light-splitting stereoscopic video conversion system |
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| WO (1) | WO2015143781A1 (en) |
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| WO2017198239A3 (en) * | 2016-05-18 | 2018-01-04 | 颜栋卿 | Three-dimensional projection light modulation device capable of increasing light utilisation |
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| WO2015143781A1 (en) | 2015-10-01 |
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