CN108415215A - Stereoprojection imaging device and stereoscopic image showing system - Google Patents
Stereoprojection imaging device and stereoscopic image showing system Download PDFInfo
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- CN108415215A CN108415215A CN201810545460.0A CN201810545460A CN108415215A CN 108415215 A CN108415215 A CN 108415215A CN 201810545460 A CN201810545460 A CN 201810545460A CN 108415215 A CN108415215 A CN 108415215A
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B35/00—Stereoscopic photography
- G03B35/18—Stereoscopic photography by simultaneous viewing
- G03B35/26—Stereoscopic photography by simultaneous viewing using polarised or coloured light separating different viewpoint images
Abstract
The embodiment of the invention discloses a kind of stereoprojection imaging devices and stereoscopic image showing system, device to include：First lens subassembly, polarization spectro component, Polarization Modulation component and the second lens subassembly；Compared to existing technologies, the embodiment of the present invention can first reduce the angle of divergence for the projected light beam that binocular projector sends out by the first lens subassembly, then it is projected to polarization spectro component again, before or after by the modulation of Polarization Modulation component, increase the angle of divergence of above-mentioned projected light beam by above-mentioned second lens subassembly, the image of binocular projector's projection can be restored, therefore, above-mentioned stereoprojection imaging device can use the optical devices such as the smaller polarization spectro component of size under the premise of not influencing projector effect.
Description
Technical field
The present invention relates to projection display technique fields more particularly to a kind of stereoprojection imaging device and stereopsis to show
System.
Background technology
Currently, polarization type 3D shadow casting techniques start to apply in a large amount of movie theatres, and the viewing principle of 3D projections is：By
The images of left and right eyes of people receives the right and left eyes video image played according to frame sequential respectively, using brain by images of left and right eyes video image
It is synthesized, generates stereoscopic effect.
Current polarization type 3D shadow casting techniques mainly use left and right polarization spectro projection pattern, are thrown with double light path polarization spectro
For shadow technology, the Amici prism for being based primarily upon a ramp type realizes that the Amici prism is with a polarization being obliquely installed point
Light film, the projected light beam from projector is by the S-polarization light for the P polarization light and reflection that polarization beam splitter beam splitting is transmission, then
P polarization light is converted into S-polarization light again or S-polarization light is converted into P polarization light, is finally unified again by two-beam according to frame sequential
It is modulated to left circularly polarized light or right-circularly polarized light.
Wherein, optical modulation system used by above-mentioned left and right polarization spectro projection pattern is generally placed at projector's projection
Between camera lens and projection screen, since the projected light beam angle of divergence of projector is larger, in order to be carried out to projected light beam
Effective optical modulation, the optical device size that above-mentioned optical modulation system uses also can be larger.
Invention content
The main purpose of the present invention is to provide a kind of stereoprojection imaging device and stereoscopic image showing systems, can solve
In certainly existing left and right polarization spectro projection pattern, the larger technical problem of optical device used in optical modulation system.
To achieve the above object, first aspect present invention provides a kind of stereoprojection imaging device, which includes：First
Lens subassembly, polarization spectro component, Polarization Modulation component and the second lens subassembly；
First lens subassembly is set between binocular projector and the polarization spectro component, first lens group
Part is used to reduce the angle of divergence for the projected light beam that the binocular projector sends out, and the polarization spectro component will be for after reducing
Projected light beam is decomposed into the transmitted light beam with the first polarization state and the reflected beams with the second polarization state, and adjusts described anti-
The direction of propagation of irradiating light beam makes the direction of propagation of the reflected beams turn to projection screen；
The Polarization Modulation component and second lens subassembly may be contained within the polarization spectro component and the projection
Between screen, and the polarization spectro component, second lens subassembly, the Polarization Modulation component, the projection screen according to
Secondary setting or the polarization spectro component, the Polarization Modulation component, second lens subassembly, the projection screen according to
Secondary setting, the Polarization Modulation component is used to modulate the polarization state of the transmitted light beam and the reflected beams according to frame sequential, described
Second lens subassembly is used to increase the angle of divergence of the transmitted light beam and the reflected beams.
Optionally, the polarization spectro component includes polarizing beam splitter and reflection subassembly, and the Polarization Modulation component includes
First light polarization modulator and the second light polarization modulator, second lens subassembly include that the first lens arranged side by side and second are saturating side by side
Mirror；
The polarizing beam splitter be used for by the projected light beam after reducing be decomposed into transmitted light beam with the first polarization state and
The reflected beams with the second polarization state, the reflection subassembly are used to adjust the direction of propagation of the reflected beams so that described
The direction of propagation of the reflected beams turns to the projection screen；
First light polarization modulator and first lens arranged side by side may be contained within the reflection subassembly and projection screen it
Between, and the reflection subassembly, first lens arranged side by side, first light polarization modulator, the projection screen are set gradually, or
Reflection subassembly described in person, first light polarization modulator, first lens arranged side by side, the projection screen are set gradually, described
First lens arranged side by side are used to increase the angle of divergence of the reflected beams；
Second light polarization modulator and second lens arranged side by side may be contained within the polarizing beam splitter and projection screen
Between, and the polarizing beam splitter, second lens arranged side by side, second light polarization modulator, the projection screen are set successively
It sets or the polarizing beam splitter, second light polarization modulator, second lens arranged side by side, the projection screen is set successively
It sets, second lens arranged side by side are used to increase the angle of divergence of the transmitted light beam；
First light polarization modulator and the second light polarization modulator are for according to the frame sequential modulation the reflected beams and thoroughly
The polarization state of irradiating light beam makes the polarization state of the reflected beams and transmitted light beam switch according to frame sequential.
Optionally, described device further includes polarization state rotary components, and the polarization state rotary components are set to the polarization
Between optical splitter and the reflection subassembly, alternatively, the polarization state rotary components are set to the reflection subassembly and described first
Between light polarization modulator, the polarization state rotary components are used to adjust the polarization state of the reflected beams, so that the reflected light
Beam and transmitted light beam polarization state having the same.
Optionally, first lens subassembly includes convex lens, and first lens arranged side by side are with the second lens arranged side by side
Concavees lens.
Optionally, polarization spectro component includes polarizing beam splitter, the first reflection subassembly and the second reflection subassembly, the polarization
Modulation component includes the first light polarization modulator, the second light polarization modulator and third light polarization modulator, the second lens subassembly packet
Include the first lens, the second lens arranged side by side and third lens arranged side by side arranged side by side；
The polarizing beam splitter be used for by the projected light beam after reducing be decomposed into transmitted light beam with the first polarization state and
The first the reflected beams with the second polarization state and the second the reflected beams, first reflection subassembly are anti-for adjusting described first
The direction of propagation of irradiating light beam so that the direction of propagation of first the reflected beams turns to the projection screen, second reflection
Component is used to adjust the direction of propagation of second the reflected beams so that described in the direction of propagation of second the reflected beams turns to
Projection screen；
First light polarization modulator and first lens arranged side by side may be contained within first reflection subassembly and projection screen
Between curtain, and first reflection subassembly, first lens arranged side by side, first light polarization modulator, the projection screen according to
Secondary setting or first reflection subassembly, first light polarization modulator, first lens arranged side by side, the projection screen
It sets gradually, first lens arranged side by side are used to increase the angle of divergence of first the reflected beams；
Second light polarization modulator and second lens arranged side by side may be contained within the polarizing beam splitter and projection screen
Between, and the polarizing beam splitter, second lens arranged side by side, second light polarization modulator, the projection screen are set successively
It sets or the polarizing beam splitter, second light polarization modulator, second lens arranged side by side, the projection screen is set successively
It sets, second lens arranged side by side are used to increase the angle of divergence of the transmitted light beam；
The third light polarization modulator and third lens arranged side by side may be contained within second reflection subassembly and projection screen
Curtain between, and second reflection subassembly, third lens arranged side by side, the third light polarization modulator, the projection screen according to
Secondary setting or second reflection subassembly, the third light polarization modulator, third lens arranged side by side, the projection screen
It sets gradually, the third lens arranged side by side are used to increase the angle of divergence of second the reflected beams.
Optionally, first lens subassembly includes convex lens, first lens, the second lens arranged side by side and the third arranged side by side
Lens arranged side by side are concavees lens.
Optionally, described device further includes the first polarization state rotary components and the first polarization state rotary components, and described first
Polarization state rotary components are set between the polarizing beam splitter and a reflection subassembly, the second polarization state rotary components
It is set between the polarizing beam splitter and two reflection subassembly, alternatively, the first polarization state rotary components are set to institute
It states between the first reflection subassembly and first light polarization modulator, it is anti-that the second polarization state rotary components are set to described second
It penetrates between component and the third light polarization modulator, the first polarization state rotary components are used for the second polarization state rotary components
The polarization state of first the reflected beams and the second the reflected beams is adjusted separately, so that first the reflected beams, the second reflection
Light beam and transmitted light beam polarization state having the same.
Optionally, first light polarization modulator, the second light polarization modulator and third light polarization modulator are used for suitable according to frame
Sequence modulates first the reflected beams, the polarization state of transmitted light beam and the second the reflected beams, makes first the reflected beams, transmission
The polarization state of light beam and the second the reflected beams switches according to frame sequential.
To achieve the above object, second aspect of the present invention provides a kind of stereoscopic image showing system, which includes：
Binocular projector, for projected successively with frame sequential carry left-eye images information projected light beam and carry
The projected light beam of right-eye image information；
Stereoprojection imaging device, the stereoprojection imaging device be the stereoprojection that provides of first aspect present invention at
As device；
Projection screen, each projected light beam with identical polarization state for being modulated for the stereoprojection imaging device
Imaging, and imaging is reflexed into the 3D glasses that user wears.
Stereoprojection imaging device provided in an embodiment of the present invention includes：First lens subassembly, polarization spectro component, polarization
Modulation component and the second lens subassembly；Compared to existing technologies, the embodiment of the present invention can pass through the first lens subassembly elder generation
The angle of divergence for reducing the projected light beam that binocular projector sends out, is then projected to polarization spectro component, by Polarization Modulation again
Before or after component modulation, increase the angle of divergence of above-mentioned projected light beam by above-mentioned second lens subassembly, you can reduction is three-dimensional
The image of projector, therefore, above-mentioned stereoprojection imaging device can under the premise of not influencing projector effect,
Use the optical devices such as the smaller polarization spectro component of size.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those skilled in the art without creative efforts, can also basis
These attached drawings obtain other attached drawings.
Fig. 1 is the structural schematic diagram of first embodiment of the invention neutral body projection imaging device；
Fig. 2 is another structural schematic diagram of first embodiment of the invention neutral body projection imaging device；
Fig. 3 is the structural schematic diagram of second embodiment of the invention neutral body projection imaging device；
Fig. 4 is another structural schematic diagram of second embodiment of the invention neutral body projection imaging device；
Fig. 5 a to Fig. 5 d are the another structural schematic diagram of second embodiment of the invention neutral body projection imaging device；
Fig. 6 a to Fig. 6 b are the another structural schematic diagram of second embodiment of the invention neutral body projection imaging device；
Fig. 7 is the structural schematic diagram of third embodiment of the invention neutral body projection imaging device；
Fig. 8 is another structural schematic diagram of third embodiment of the invention neutral body projection imaging device；
Fig. 9 a to Fig. 9 d are the another structural schematic diagram of third embodiment of the invention neutral body projection imaging device；
Figure 10 a to Figure 10 b are the another structural schematic diagram of third embodiment of the invention neutral body projection imaging device.
Specific implementation mode
In order to make the invention's purpose, features and advantages of the invention more obvious and easy to understand, below in conjunction with the present invention
Attached drawing in embodiment, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described reality
It is only a part of the embodiment of the present invention to apply example, and not all embodiments.Based on the embodiments of the present invention, people in the art
The every other embodiment that member is obtained without making creative work, shall fall within the protection scope of the present invention.
Referring to Fig. 1, Fig. 1 is the structural schematic diagram of first embodiment of the invention neutral body projection imaging device, the present invention
In embodiment, above-mentioned stereoprojection imaging device 100 includes：First lens subassembly 110, polarization spectro component 120, Polarization Modulation
Component 130 and the second lens subassembly 140.
First lens subassembly 110 is set between binocular projector 200 and polarization spectro component 120, the first lens subassembly
110 angle of divergence for reducing the projected light beam that binocular projector 200 sends out, polarization spectro component 120 will be for after reducing
Projected light beam is decomposed into the transmitted light beam with the first polarization state and the reflected beams with the second polarization state, and adjusts reflected light
The direction of propagation of beam makes the direction of propagation of the reflected beams turn to projection screen 300.
Polarization Modulation component 130 and the second lens subassembly 140 may be contained within polarization spectro component 120 and projection screen 300
Between, and polarization spectro component 120, the second lens subassembly 140, Polarization Modulation component 130, projection screen 300 are set gradually, partially
The modulation component 130 that shakes is used to modulate the polarization state of above-mentioned transmitted light beam and the reflected beams, the second lens subassembly 140 according to frame sequential
The angle of divergence for increasing above-mentioned transmitted light beam and the reflected beams.
Alternatively, referring to Fig. 2, Fig. 2 is another structural representation of first embodiment of the invention neutral body projection imaging device
Figure, in fig. 2, Polarization Modulation component 130 and the second lens subassembly 140 may be contained within polarization spectro component 120 and projection screen
Between 300, and polarization spectro component 120, Polarization Modulation component 130, the second lens subassembly 140, projection screen 300 are set successively
It sets, Polarization Modulation component 130 is used to modulate the polarization state of above-mentioned transmitted light beam and the reflected beams, the second lens group according to frame sequential
Part 140 is used to increase the angle of divergence of the transmitted light beam and the reflected beams that are projected from Polarization Modulation component 130.
Wherein, the stereoprojection imaging device 100 that the embodiment of the present invention is provided is positioned over binocular projector when in use
Between 200 and projection screen 300, the projected light beam for being projected to binocular projector 200 carries out optical effect, makes projection
There are light beam the polarization states such as unified linear polarization or circular polarization, projection screen 300 again will before being projected to projection screen 300
Projected light beam with polarization state reflexes in the 3D glasses of spectators' wearing, wherein projection screen 300 need to have polarization-maintaining special
Property, i.e., projection screen 300 cannot change the polarization state of projected light beam, generally use metal during reflected projection beam
Curtain is realized.
First, 200 alternating projection of binocular projector goes out to carry the projected light beam of left-eye images information and carries right eye
The projected light beam of image information, such as can be projected in a manner of frame sequential, it is similar to and plays video, it is left that the T1 moment projects carrying
The projected light beam of eye image information, it is left that the T2 moment projects the projected light beam for carrying right-eye image information, the T3 moment projects carrying again
The projected light beam of eye image information, T4 moment project the projected light beam ... ... for carrying right-eye image information again, and so on.From
It requires projection function to support that frame rate is the video playing of 100HZ or higher frame rate on hardware, the throwing of digital micro-mirror formula can be used
Shadow machine, liquid crystal over silicon formula projector etc..
Then, polarization beam splitting, in the embodiment of the present invention, polarization spectro are carried out to projected light beam by polarization spectro component 120
Projected light beam is divided into two kinds of light beams with different polarization states by component 120, that is, is decomposed into the transmitted light with the first polarization state
Beam and the reflected beams with the second polarization state.Meanwhile above-mentioned polarization spectro component 120 is additionally operable to adjust above-mentioned the reflected beams
The direction of propagation makes the direction of propagation of above-mentioned the reflected beams turn to projection screen 300.Wherein, above-mentioned transmitted light beam and the reflected beams
The image information of carrying is identical and image space on projection screen 300 is identical.It is understood that the present invention due to
The angle of divergence that the projected light beam that binocular projector 200 sends out is reduced using the first lens subassembly 110, it is therefore possible to use ruler
Very little smaller polarization spectro component 120.
Wherein, above-mentioned first polarization state and the second polarization state are that the polarization direction of linear polarization and the two is orthogonal, such as
First polarization state is P polarization light, the second polarization state is S-polarization light.
Further, above-mentioned stereoprojection imaging device 100 further includes that polarization state rotary components (do not show in Fig. 1 and Fig. 2
Go out), which may be disposed between polarization spectro component 120 and Polarization Modulation component 130, above-mentioned for adjusting
The polarization state of transmitted light beam or the reflected beams, so that above-mentioned transmitted light beam and the reflected beams polarization state having the same, i.e., it will be upper
The polarization state for stating the reflected beams is adjusted to the first polarization state from the second polarization state.It is understood that working as polarization spectro component
120, when the second lens subassembly 140, Polarization Modulation component 130, projection screen 300 are set gradually, if above-mentioned polarization state rotation group
Part is set between polarization spectro component 120 and the second lens subassembly 140, then since the first lens subassembly 110 reduces solid
The angle of divergence for the projected light beam that projecting apparatus 200 is sent out, therefore the smaller polarization state rotary components of size equally may be used.
Further, above-mentioned transmitted light beam and the polarization of the reflected beams are modulated according to frame sequential by Polarization Modulation component 130
State so that the polarization state of above-mentioned transmitted light beam and the reflected beams according to frame sequential above-mentioned first polarization state and the second polarization state it
Between or preset third polarization state and the 4th polarization state between switch.For example, in present frame by above-mentioned transmitted light beam and reflected light
Beam is modulated to the first polarization state simultaneously, and above-mentioned transmitted light beam and the reflected beams are modulated to the second polarization state in next frame.It can be with
Understand, when polarization spectro component 120, Polarization Modulation component 130, the second lens subassembly 140, projection screen 300 are set successively
When setting, since the first lens subassembly 110 reduces the angle of divergence for the projected light beam that binocular projector 200 sends out, equally may be used
With using the smaller Polarization Modulation component 130 of size.
Wherein, the modulation system of above-mentioned Polarization Modulation component 130 depends on the corresponding 3D of above-mentioned stereoprojection imaging device
The polarization state of glasses, when the polarization state of the 3D glasses is linear polarization, above-mentioned Polarization Modulation component 130 can then be modulated above-mentioned
The polarization state of irradiating light beam and the reflected beams switches according to frame sequential between above-mentioned first polarization state and the second polarization state；As the 3D
The polarization state of glasses be circular polarization or elliptical polarization when, above-mentioned Polarization Modulation component 130 can then modulate above-mentioned transmitted light beam with
The polarization state of the reflected beams switches according to frame sequential between above-mentioned third polarization state and the 4th polarization state.
Wherein, above-mentioned third polarization state and the 4th polarization state be the polarization direction of circular polarization or elliptical polarization and the two just
It hands over.
Further, the second lens subassembly 140 is used to increase the angle of divergence of above-mentioned transmitted light beam and the reflected beams, with reduction
The image of binocular projector's projection.
Stereoprojection imaging device 100 provided in an embodiment of the present invention can pass through first compared to existing technologies
Lens subassembly 110 first reduces the angle of divergence for the projected light beam that binocular projector sends out, and is then projected to polarization spectro component again
120, before or after being modulated by Polarization Modulation component 130, above-mentioned projected light beam is increased by the second lens subassembly 140
The angle of divergence, you can the image that reduction binocular projector 200 projects, therefore, above-mentioned stereoprojection imaging device 100 can be in not shadow
Under the premise of ringing projector effect, the optical devices such as the smaller polarization spectro component of size are used.
Further, it is based on first embodiment of the invention, is projected for second embodiment of the invention neutral body with reference to Fig. 3, Fig. 3
The structural schematic diagram of imaging device, in the embodiment of the present invention, polarization spectro component 120 includes polarizing beam splitter 121 and reflection group
Part 122, Polarization Modulation component 130 include the first light polarization modulator 131 and the second light polarization modulator 132, the second lens subassembly 140
Including the first 141 and second lens 142 arranged side by side of lens arranged side by side.
Polarizing beam splitter 121 is used to the projected light beam after reducing being decomposed into transmitted light beam and tool with the first polarization state
There are the reflected beams of the second polarization state, reflection subassembly 122 to be used to adjust the direction of propagation of above-mentioned the reflected beams so that above-mentioned reflection
The direction of propagation of light beam turns to projection screen 300.
First light polarization modulator 131 and the first lens 141 arranged side by side may be contained within reflection subassembly 122 and projection screen 300 it
Between, and reflection subassembly 122, the first lens 141 arranged side by side, the first light polarization modulator 131, projection screen 300 are set gradually, first simultaneously
Row lens 141 are used to increase the angle of divergence of above-mentioned the reflected beams.
Second light polarization modulator 132 and the second lens 142 arranged side by side may be contained within polarizing beam splitter 121 and projection screen 300
Between, and polarizing beam splitter 121, the second lens 142 arranged side by side, the second light polarization modulator 132, projection screen 300 are set gradually,
Two lens 142 arranged side by side are used to increase the angle of divergence of above-mentioned transmitted light beam.
Wherein, the first lens subassembly 110 is preferably convex lens, and the first 141 and second lens 142 arranged side by side of lens arranged side by side are preferably
For concavees lens.
Wherein, polarizing beam splitter 121 may be used polarization beam splitter and is polarized to be split, and can also use optics wiregrating
It is split and is polarized.
Wherein, plane mirror may be used in reflection subassembly 122 or the device with reflection function is realized, it is of course also possible to adopt
With lens etc. there is the optical device for changing optical path direction to realize.
It is understood that since the first lens subassembly 110 reduces the hair for the projected light beam that binocular projector 200 sends out
Angle is dissipated, it is therefore possible to use polarizing beam splitter 121 and reflection subassembly 122 that size is smaller.
Alternatively, with reference to Fig. 4, Fig. 4 is another structural schematic diagram of second embodiment of the invention neutral body projection imaging device,
In Fig. 4, the first light polarization modulator 131 and the first lens 141 arranged side by side may be contained within reflection subassembly 122 and projection screen 300 it
Between, and reflection subassembly 122, the first light polarization modulator 131, the first lens 141 arranged side by side, projection screen 300 are set gradually, first simultaneously
Row lens 141 are used to increase the angle of divergence of the above-mentioned the reflected beams projected from the first light polarization modulator 131.
Second light polarization modulator 132 and the second lens 142 arranged side by side may be contained within polarizing beam splitter 121 and projection screen 300
Between, and polarizing beam splitter 121, the second light polarization modulator 132, the second lens 142 arranged side by side, projection screen 300 are set gradually,
Two lens 142 arranged side by side are used to increase the angle of divergence of the above-mentioned transmitted light beam projected from the second light polarization modulator 132.
It is understood that in Fig. 4, since the first lens subassembly 110 reduces the projection that binocular projector 200 sends out
Therefore the angle of divergence of light beam not only may be used the smaller polarizing beam splitter 121 of size and reflection subassembly 122, can also use
Using size smaller the first light polarization modulator 131 and the second light polarization modulator 132.
Further, it is filled for second embodiment of the invention neutral body projection imaging with reference to Fig. 5 a to Fig. 5 d, Fig. 5 a to Fig. 5 d
Another structural schematic diagram set, above-mentioned stereoprojection imaging device 100 further include polarization state rotary components 150, polarization state rotation
Turn component 150 to be set between polarizing beam splitter 121 and reflection subassembly 122, or is set to the polarization of reflection subassembly 122 and first
Between modulator 131, the polarization state for adjusting above-mentioned the reflected beams, so that above-mentioned the reflected beams and transmitted light beam are with identical
Polarization state.
It is understood that the present invention using the first lens subassembly 110 due to reducing the throwing that binocular projector 200 sends out
The angle of divergence of shadow light beam, therefore the smaller polarization state rotary components 150 of size may be used.
It is understood that when above-mentioned polarization state rotary components 150 are set to polarizing beam splitter 121 and reflection subassembly 122
Between, or be set between reflection subassembly 122 and the first light polarization modulator 131, and polarization state rotary components 150, first are simultaneously
When row lens 141, the first light polarization modulator 131 are set gradually, since the first lens subassembly 110 reduces binocular projector 200
The angle of divergence of the projected light beam sent out, therefore the smaller polarization state rotary components 150 of size equally may be used.
Further, the first light polarization modulator 131 and the second light polarization modulator 132 are used for above-mentioned anti-according to frame sequential modulation
The polarization state of irradiating light beam and transmitted light beam so that above-mentioned the reflected beams and the polarization state of transmitted light beam switch according to frame sequential.Example
Such as, above-mentioned transmitted light beam and the reflected beams are modulated to third polarization state simultaneously in present frame, in next frame by above-mentioned transmitted light
Beam and the reflected beams are modulated to the 4th polarization state.
Wherein, the first light polarization modulator 131 and the second light polarization modulator 132 can also modulate above-mentioned transmission according to frame sequential
The polarization state of light beam and the reflected beams so that the polarization state of above-mentioned transmitted light beam and the reflected beams is according to frame sequential above-mentioned first
Switch between polarization state and the second polarization state.
Wherein, with reference to Fig. 6 a to Fig. 6 b, 6a to Fig. 6 b be second embodiment of the invention neutral body projection imaging device again
One structural schematic diagram, in 6a to Fig. 6 b, above-mentioned Polarization Modulation component 130 is an entirety, for being modulated according to frame sequential
State the reflected beams and the polarization state of transmitted light beam so that above-mentioned the reflected beams and the polarization state of transmitted light beam are according to frame sequential upper
It states between the first polarization state and the second polarization state or switches between above-mentioned third polarization state and the 4th polarization state.
Wherein it is possible to understand, when above-mentioned Polarization Modulation component 130 is an entirety, it is only necessary to which a modulation is driven
Dynamic signal, you can modulate above-mentioned the reflected beams and the polarization state of transmitted light beam simultaneously according to frame sequential；When Polarization Modulation component 130
Including the first light polarization modulator 131 and when the second light polarization modulator 132, then two modulated drive signals are needed, respectively according to frame
Sequence synchronization modulates above-mentioned the reflected beams and the polarization state of transmitted light beam.
Further, increase the angle of divergence of above-mentioned the reflected beams using the first lens 141 arranged side by side；Utilize the second lens arranged side by side
142 increase the angle of divergence of above-mentioned transmitted light beam, to restore above-mentioned the reflected beams projected image corresponding with transmitted light beam.
Stereoprojection imaging device 100 provided in an embodiment of the present invention can pass through first compared to existing technologies
Lens subassembly 110 first reduces the angle of divergence for the projected light beam that binocular projector sends out, and is then projected to polarizing beam splitter 121 again,
It is then saturating side by side by first so as to optical devices such as the smaller polarizing beam splitter 121 of use size, reflection subassemblies 122
Mirror 141 and the second lens 142 arranged side by side increase the angle of divergence of projected light beam, you can the image that reduction binocular projector 200 projects.
Further, it is based on first embodiment of the invention, is projected for third embodiment of the invention neutral body with reference to Fig. 7, Fig. 7
The structural schematic diagram of imaging device, in the embodiment of the present invention, polarization spectro component 120 includes that polarizing beam splitter 121, first reflects
Component 122 and the second reflection subassembly 123, Polarization Modulation component 130 include the first light polarization modulator 131, the second light polarization modulator
132 and third light polarization modulator 133, the second lens subassembly 140 includes the first lens 141 arranged side by side, the second lens 142 arranged side by side and the
Three lens 143 arranged side by side.
Polarizing beam splitter 121 is used to the projected light beam after reducing being decomposed into transmitted light beam and tool with the first polarization state
There are the first the reflected beams and the second the reflected beams of the second polarization state, the first reflection subassembly 122 is for adjusting above-mentioned first reflection
The direction of propagation of light beam so that the direction of propagation of above-mentioned first the reflected beams turns to projection screen 300, the second reflection subassembly 123
The direction of propagation for adjusting above-mentioned second the reflected beams so that the direction of propagation of above-mentioned second the reflected beams turns to projection screen
300.Wherein, the image information that above-mentioned first the reflected beams and the second the reflected beams carry after combination with above-mentioned transmitted light beam
The image information of carrying is identical and image space on projection screen 300 is also identical.
First light polarization modulator 131 and the first lens 141 arranged side by side may be contained within the first reflection subassembly 122 and projection screen
Between 300, and the first reflection subassembly 122, the first lens 141 arranged side by side, the first light polarization modulator 131, projection screen 300 are set successively
It sets, the first lens 141 arranged side by side are used to increase the angle of divergence of above-mentioned first the reflected beams.
Second light polarization modulator 132 and the second lens 142 arranged side by side may be contained within polarizing beam splitter 121 and projection screen 300
Between, and polarizing beam splitter 121, the second lens 142 arranged side by side, the second light polarization modulator 132, projection screen 300 are set gradually,
Two lens 142 arranged side by side are used to increase the angle of divergence of above-mentioned transmitted light beam.
Third light polarization modulator 133 and third lens 143 arranged side by side may be contained within the second reflection subassembly 123 and projection screen
Between 300, and the second reflection subassembly 123, third lens 143 arranged side by side, third light polarization modulator 133, projection screen 300 are set successively
It sets, third lens 143 arranged side by side are used to increase the angle of divergence of above-mentioned second the reflected beams.
Wherein, the first lens subassembly 110 is preferably convex lens, the first lens 141 arranged side by side, the second lens 142 arranged side by side and the
Three lens 143 arranged side by side are preferably concavees lens.
Wherein, the first polarization state and the second polarization state for the light beam that 121 beam splitting of polarizing beam splitter go out are linear polarization, and
The polarization direction of the two is orthogonal, such as the first polarization state and the second polarization state are respectively linear P polarization and S-polarization.Polarization point
Light device 121 includes two substrates being in the shape of the letter V that are connected to each other, and polarization spectro layer is equipped on each substrate.In addition, polarization
Optical splitter 121 may be used polarization beam splitter and is polarized to be split, and can also be split and is polarized using optics wiregrating.
Wherein, plane mirror or the device with reflection function may be used in the first reflection subassembly 122 and the second reflection subassembly 123
Part is realized, it is of course also possible to use there is lens etc. the optical device for changing optical path direction to realize.
It is understood that the present invention using the first lens subassembly 110 due to reducing the throwing that binocular projector 200 sends out
The angle of divergence of shadow light beam, it is therefore possible to use polarizing beam splitter 121 and the first reflection subassembly 122 and second that size is smaller
Reflection subassembly 123.
Alternatively, with reference to Fig. 8, Fig. 8 is another structural schematic diagram of third embodiment of the invention neutral body projection imaging device,
In fig. 8, the first light polarization modulator 131 and the first lens 141 arranged side by side may be contained within the first reflection subassembly 122 and projection screen
Between 300, and the first reflection subassembly 122, the first light polarization modulator 131, the first lens 141 arranged side by side, projection screen 300 are set successively
It sets, the first lens 141 arranged side by side are used to increase the angle of divergence of above-mentioned first the reflected beams projected from the first light polarization modulator 131.
Second light polarization modulator 132 and the second lens 142 arranged side by side may be contained within polarizing beam splitter 121 and projection screen 300
Between, and polarizing beam splitter 121, the second light polarization modulator 132, the second lens 142 arranged side by side, projection screen 300 are set gradually,
Two lens 142 arranged side by side are used to increase the angle of divergence of the above-mentioned transmitted light beam projected from the second light polarization modulator 132.
Third light polarization modulator 133 and third lens 143 arranged side by side may be contained within the second reflection subassembly 123 and projection screen
Between 300, and the second reflection subassembly 123, third light polarization modulator 133, third lens 143 arranged side by side, projection screen 300 are set successively
It sets, third lens 143 arranged side by side are used to increase the angle of divergence of above-mentioned second the reflected beams projected from third light polarization modulator 133.
It is understood that in fig. 8, since the first lens subassembly 110 reduces the projection that binocular projector 200 sends out
Therefore the smaller polarizing beam splitter 121 of size and the first reflection subassembly 122 and not only may be used in the angle of divergence of light beam
Two reflection subassemblies 123 can also be used using smaller the first light polarization modulator 131 of size, the second light polarization modulator 132 and the
Three light polarization modulators 133.
Further, it is filled for third embodiment of the invention neutral body projection imaging with reference to Fig. 9 a to Fig. 9 d, Fig. 9 a to Fig. 9 d
Another structural schematic diagram set, above-mentioned stereoprojection imaging device 100 further include that the first polarization state rotary components 151 and second are inclined
Polarization state rotary components 152, the first polarization state rotary components 151 be set to polarizing beam splitter 121 and the first reflection subassembly 122 it
Between, the second polarization state rotary components 152 are set between polarizing beam splitter 121 and the second reflection subassembly 123；Alternatively, first is inclined
Polarization state rotary components 151 are set between the first reflection subassembly 122 and the first light polarization modulator 131, the second polarization state rotation group
Part 152 is set between the second reflection subassembly 123 and third light polarization modulator 133.Wherein, the first polarization state rotary components 151
It is used to adjust the polarization state of above-mentioned first the reflected beams and the second the reflected beams with the second polarization state rotary components 152, so that on
State the first the reflected beams, the second the reflected beams and transmitted light beam polarization state having the same.
It is understood that the present invention using the first lens subassembly 110 due to reducing the throwing that binocular projector 200 sends out
The angle of divergence of shadow light beam, therefore when the first polarization state rotary components 151 are set to polarizing beam splitter 121 and the first reflection subassembly
Between 122, when the second polarization state rotary components 152 are set between polarizing beam splitter 121 and the second reflection subassembly 123, or
When the first polarization state rotary components 151 are set between the first reflection subassembly 122 and the first light polarization modulator 131, second polarizes
State rotary components 152 are set between the second reflection subassembly 123 and third light polarization modulator 133, and the first polarization state rotation group
Part 151, the first lens 141 arranged side by side, the first light polarization modulator 131 are set gradually, and the second polarization state rotary components 152, third are simultaneously
It, can be using the first smaller polarization state rotary components of size when row lens 143, third light polarization modulator 133 are set gradually
151 and the second polarization state rotary components 152.
Further, the first light polarization modulator 131, the second light polarization modulator 132 and third light polarization modulator 133 are for pressing
Modulate above-mentioned first the reflected beams, the polarization state of transmitted light beam and the second the reflected beams respectively according to frame sequential so that above-mentioned first
The polarization state of the reflected beams, transmitted light beam and the second the reflected beams is according to frame sequential in above-mentioned third polarization state and the 4th polarization state
Between switch.It is understood that since the present invention using the first lens subassembly 110 due to reducing the hair of binocular projector 200
Therefore the angle of divergence of the projected light beam gone out equally may be used smaller the first light polarization modulator 131, second polarization of size and adjust
Device 132 and third light polarization modulator 133 processed.
Wherein, the first light polarization modulator 131, the second light polarization modulator 132 and third light polarization modulator 133 can also be according to
Frame sequential modulates above-mentioned first the reflected beams, the polarization state of transmitted light beam and the second the reflected beams so that above-mentioned first reflected light
The polarization state of beam, transmitted light beam and the second the reflected beams is cut according to frame sequential between above-mentioned first polarization state and the second polarization state
It changes.
Wherein, 0a to Figure 10 b, Figure 10 a to Figure 10 b fill for third embodiment of the invention neutral body projection imaging referring to Fig.1
The another structural schematic diagram set, in Figure 10 a to Figure 10 b, above-mentioned Polarization Modulation component 130 is an entirety, for according to frame
Sequence modulate above-mentioned first the reflected beams, the polarization state of transmitted light beam and the second the reflected beams so that above-mentioned the reflected beams with thoroughly
The polarization state of irradiating light beam is according to frame sequential between above-mentioned first polarization state and the second polarization state or above-mentioned third polarization state and the
Switch between four polarization states.
Wherein it is possible to understand, when above-mentioned Polarization Modulation component 130 is an entirety, it is only necessary to which a modulation is driven
Dynamic signal, you can modulate above-mentioned first the reflected beams, the polarization state of transmitted light beam and the second the reflected beams simultaneously according to frame sequential；
When Polarization Modulation component 130 includes the first light polarization modulator 131, the second light polarization modulator 132 and third light polarization modulator 133
When, then three modulated drive signals are needed, respectively according to above-mentioned first the reflected beams of frame sequential synchronous modulation, transmitted light beam and
The polarization state of two the reflected beams.
Further, the first lens 141 arranged side by side are used to increase the angle of divergence of above-mentioned first the reflected beams；Second lens arranged side by side
142 angle of divergence for increasing above-mentioned transmitted light beam；Third lens 143 arranged side by side are used to increase the diverging of above-mentioned second the reflected beams
Angle, to restore above-mentioned first the reflected beams, transmitted light beam and the corresponding projected image of the second the reflected beams.
Stereoprojection imaging device 100 provided in an embodiment of the present invention can pass through first compared to existing technologies
Lens subassembly 110 first reduces the angle of divergence for the projected light beam that binocular projector sends out, and is then projected to polarizing beam splitter 121 again,
So as to using optical devices such as the smaller polarizing beam splitter 121 of size, the first reflection subassembly 122, the second reflection subassemblies 122
Optical modulation is carried out to projected light beam, then passes through the first lens 141 arranged side by side, the second 142 and second lens arranged side by side of lens arranged side by side
The angle of divergence of projected light beam before 142 increase modulation or after modulating, you can the image that reduction binocular projector 200 projects,
Projector effect is neither influenced, and above-mentioned optical device existing difficulty when processing is with assembling can be simplified.
Further, first embodiment of the invention is based on to 3rd embodiment, and fourth embodiment of the invention additionally provides one
Kind stereoscopic image showing system, including binocular projector, stereoprojection imaging device and projection screen；Wherein, binocular projector
Projection for projecting the projected light beam for carrying left-eye images information successively with frame sequential He carrying right-eye image information
Light beam；The stereoprojection imaging device 100 that any embodiment above is provided may be used in stereoprojection imaging device；And it projects
Each projected light beam with identical polarization state that screen is then used to modulate for above-mentioned stereoprojection imaging device is imaged, and by institute
At picture reflex to user wearing 3D glasses.
It should be noted that the various embodiments described above are in the specific implementation, different functional units can also be added and realized accordingly
Effect, for example, the polarizer of filtration can be arranged in the light path of each light beam so that the polarization state of each light beam is more
To be pure, optical path compensation component can also be set in the light path of segment beam so that all light beams are when reaching imaging surface
Light path it is identical.
In the above-described embodiments, it all emphasizes particularly on different fields to the description of each embodiment, there is no the portion being described in detail in some embodiment
Point, it may refer to the associated description of other embodiments.
It is the description to a kind of stereoprojection imaging device provided by the present invention and stereoscopic image showing system above, it is right
In those skilled in the art, the thought of embodiment, has change in specific embodiments and applications according to the present invention
Become place, to sum up, the content of the present specification should not be construed as limiting the invention.
Claims (9)
1. a kind of stereoprojection imaging device, which is characterized in that described device includes：First lens subassembly, polarization spectro component,
Polarization Modulation component and the second lens subassembly；
First lens subassembly is set between binocular projector and the polarization spectro component, and first lens subassembly is used
In the angle of divergence for reducing the projected light beam that the binocular projector sends out, the polarization spectro component is for the projection after reducing
Light beam is decomposed into the transmitted light beam with the first polarization state and the reflected beams with the second polarization state, and adjusts the reflected light
The direction of propagation of beam makes the direction of propagation of the reflected beams turn to projection screen；
The Polarization Modulation component and second lens subassembly may be contained within the polarization spectro component and the projection screen
Between, and the polarization spectro component, second lens subassembly, the Polarization Modulation component, the projection screen are set successively
It sets or the polarization spectro component, the Polarization Modulation component, second lens subassembly, the projection screen is set successively
It sets, polarization state of the Polarization Modulation component for modulating the transmitted light beam and the reflected beams according to frame sequential, described second
Lens subassembly is used to increase the angle of divergence of the transmitted light beam and the reflected beams.
2. the apparatus according to claim 1, which is characterized in that the polarization spectro component includes polarizing beam splitter and reflection
Component, the Polarization Modulation component include the first light polarization modulator and the second light polarization modulator, and second lens subassembly includes
First lens arranged side by side and the second lens arranged side by side；
The polarizing beam splitter is used to the projected light beam after reducing being decomposed into the transmitted light beam with the first polarization state and have
The reflected beams of second polarization state, the reflection subassembly are used to adjust the direction of propagation of the reflected beams so that the reflection
The direction of propagation of light beam turns to the projection screen；
First light polarization modulator and first lens arranged side by side may be contained between the reflection subassembly and projection screen, and
The reflection subassembly, first lens arranged side by side, first light polarization modulator, the projection screen are set gradually, Huo Zhesuo
It states reflection subassembly, first light polarization modulator, first lens arranged side by side, the projection screen to set gradually, described first
Lens arranged side by side are used to increase the angle of divergence of the reflected beams；
Second light polarization modulator and second lens arranged side by side may be contained between the polarizing beam splitter and projection screen,
And the polarizing beam splitter, second lens arranged side by side, second light polarization modulator, the projection screen are set gradually, or
Polarizing beam splitter described in person, second light polarization modulator, second lens arranged side by side, the projection screen are set gradually, institute
State the angle of divergence of second lens arranged side by side for increasing the transmitted light beam；
First light polarization modulator and the second light polarization modulator are used to modulate the reflected beams and transmitted light according to frame sequential
The polarization state of beam makes the polarization state of the reflected beams and transmitted light beam switch according to frame sequential.
3. the apparatus of claim 2, which is characterized in that described device further includes polarization state rotary components, described inclined
Polarization state rotary components are set between the polarizing beam splitter and the reflection subassembly, alternatively, the polarization state rotary components are set
It is placed between the reflection subassembly and first light polarization modulator, the polarization state rotary components are for adjusting the reflected light
The polarization state of beam, so that the reflected beams and transmitted light beam polarization state having the same.
4. the apparatus of claim 2, which is characterized in that first lens subassembly includes convex lens, and described first
Lens and the second lens arranged side by side arranged side by side are concavees lens.
5. the apparatus according to claim 1, which is characterized in that polarization spectro component includes polarizing beam splitter, the first reflection
Component and the second reflection subassembly, the Polarization Modulation component include that the first light polarization modulator, the second light polarization modulator and third are inclined
Shake modulator, and second lens subassembly includes the first lens, the second lens arranged side by side and third lens arranged side by side arranged side by side；
The polarizing beam splitter is used to the projected light beam after reducing being decomposed into the transmitted light beam with the first polarization state and have
First the reflected beams of the second polarization state and the second the reflected beams, first reflection subassembly is for adjusting first reflected light
The direction of propagation of beam so that the direction of propagation of first the reflected beams turns to the projection screen, second reflection subassembly
The direction of propagation for adjusting second the reflected beams so that the direction of propagation of second the reflected beams turns to the projection
Screen；
First light polarization modulator and first lens arranged side by side may be contained within first reflection subassembly and projection screen it
Between, and first reflection subassembly, first lens arranged side by side, first light polarization modulator, the projection screen are set successively
Set or first reflection subassembly, first light polarization modulator, first lens arranged side by side, the projection screen successively
Setting, first lens arranged side by side are used to increase the angle of divergence of first the reflected beams；
Second light polarization modulator and second lens arranged side by side may be contained between the polarizing beam splitter and projection screen,
And the polarizing beam splitter, second lens arranged side by side, second light polarization modulator, the projection screen are set gradually, or
Polarizing beam splitter described in person, second light polarization modulator, second lens arranged side by side, the projection screen are set gradually, institute
State the angle of divergence of second lens arranged side by side for increasing the transmitted light beam；
The third light polarization modulator and third lens arranged side by side may be contained within second reflection subassembly and projection screen it
Between, and second reflection subassembly, third lens arranged side by side, the third light polarization modulator, the projection screen are set successively
Set or second reflection subassembly, the third light polarization modulator, third lens arranged side by side, the projection screen successively
Setting, the third lens arranged side by side are used to increase the angle of divergence of second the reflected beams.
6. device according to claim 5, which is characterized in that first lens subassembly includes convex lens, and described first
Lens, the second lens arranged side by side and third lens arranged side by side arranged side by side are concavees lens.
7. device according to claim 5, which is characterized in that described device further includes the first polarization state rotary components and
One polarization state rotary components, the first polarization state rotary components be set to the polarizing beam splitter and a reflection subassembly it
Between, the second polarization state rotary components are set between the polarizing beam splitter and two reflection subassembly, alternatively, described
One polarization state rotary components are set between first reflection subassembly and first light polarization modulator, second polarization state
Rotary components are set between second reflection subassembly and the third light polarization modulator, the first polarization state rotary components
It is used to adjust separately the polarization state of first the reflected beams and the second the reflected beams with the second polarization state rotary components, so that institute
State the first the reflected beams, the second the reflected beams and transmitted light beam polarization state having the same.
8. device according to claim 5, which is characterized in that first light polarization modulator, the second light polarization modulator and
Third light polarization modulator be used for according to frame sequential modulate first the reflected beams, transmitted light beam and the second the reflected beams polarization
State makes the polarization state of first the reflected beams, transmitted light beam and the second the reflected beams switch according to frame sequential.
9. a kind of stereoscopic image showing system, which is characterized in that the system comprises：
Binocular projector, for projected successively with frame sequential carry left-eye images information projected light beam and carry right eye
The projected light beam of image information；
Stereoprojection imaging device, the stereoprojection imaging device are the stereoprojection described in claim 1 to 8 any one
Imaging device；
Projection screen, each projected light beam with identical polarization state for modulating for the stereoprojection imaging device at
Picture, and imaging is reflexed into the 3D glasses that user wears.
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| WO2023040662A1 (en) * | 2021-09-17 | 2023-03-23 | 华为技术有限公司 | Picture generation unit, related apparatus, and image projection method |
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| WO2023040662A1 (en) * | 2021-09-17 | 2023-03-23 | 华为技术有限公司 | Picture generation unit, related apparatus, and image projection method |
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