CN108051977A - Stereoprojection imaging device and stereoscopic image showing system - Google Patents
Stereoprojection imaging device and stereoscopic image showing system Download PDFInfo
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- CN108051977A CN108051977A CN201810044145.XA CN201810044145A CN108051977A CN 108051977 A CN108051977 A CN 108051977A CN 201810044145 A CN201810044145 A CN 201810044145A CN 108051977 A CN108051977 A CN 108051977A
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- polarization
- reflected beams
- polarization state
- light beam
- lens subassembly
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B35/00—Stereoscopic photography
- G03B35/18—Stereoscopic photography by simultaneous viewing
- G03B35/26—Stereoscopic photography by simultaneous viewing using polarised or coloured light separating different viewpoint images
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
- G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
- G02B30/22—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the stereoscopic type
- G02B30/25—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 embodiment of the invention discloses a kind of stereoprojection imaging devices and stereoscopic image showing system, device to include：Polarization spectro component, lens subassembly, Polarization Modulation component；The projected light beam that above-mentioned polarization spectro component is used to send binocular projector is decomposed into the transmitted light beam with the first polarization state and the reflected beams with the second polarization state；Compared to existing technologies, the embodiment of the present invention can use said lens component to replace traditional speculum, to adjust the direction of propagation of above-mentioned the reflected beams, so that the direction of propagation of above-mentioned the reflected beams turns to projection screen, since regular plated film is not required in said lens component, the embodiment of the present invention can effectively reduce the maintenance cost of above-mentioned stereoprojection imaging device.
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
At present, 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 using left and right polarization spectro projection pattern, are thrown with double light path polarization spectro
Exemplified by 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 are the P polarization light and the S-polarization light of reflection that transmit by polarization beam splitter beam splitting, 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.
In above-mentioned left and right polarization spectro projection pattern, the reflected beams and the biography of transmitted light beam that are separated due to Amici prism
Broadcast direction difference, it is therefore desirable to the direction of propagation of the reflected beams is adjusted using speculum, makes the reflected beams equal with transmitted light beam
It can project to projection screen.Wherein, above-mentioned speculum is a kind of by plating one layer of metallic silver (or aluminium) at the back side of optical glass
Film, to make the optical element of the reflection of generation incident light, in use, it is necessary to periodically to speculum carry out plated film, with maintain compared with
High reflectivity is therefore, existing higher using the left and right polarization spectro projection pattern maintenance cost of speculum.
The content of the invention
An embodiment of the present invention provides a kind of stereoprojection imaging device and stereoscopic image showing systems, can solve existing
In technology left and right polarization spectro projection pattern using speculum come when adjusting the direction of propagation of the reflected beams, maintenance cost is higher
Technical problem.
To achieve the above object, first aspect present invention provides a kind of stereoprojection imaging device, which includes：Polarization
Spectrum groupware, lens subassembly and Polarization Modulation component；
The projected light beam that the polarization spectro component is used to send binocular projector is decomposed into the first polarization state
Transmitted light beam and the reflected beams with the second polarization state；
The lens subassembly is arranged in the light path where the reflected beams, for adjusting the propagation of the reflected beams
Direction, so that the direction of propagation of the reflected beams turns to projection screen；
The Polarization Modulation component is arranged in the light path where the transmitted light beam and the reflected beams, for suitable according to frame
Sequence modulates the polarization state of the transmitted light beam and the reflected beams.
Optionally, the Polarization Modulation component includes the first light polarization modulator and the second light polarization modulator；
First light polarization modulator is arranged between the lens subassembly and the projection screen, and second polarization is adjusted
Device processed is arranged between the polarization spectro component and the projection screen, first light polarization modulator and the second Polarization Modulation
Device makes the reflected beams and transmitted light for modulating the reflected beams and the polarization state of transmitted light beam respectively according to frame sequential
The polarization state of beam switches according to frame sequential.
Optionally, described device further includes polarization state rotary components, and the polarization state rotary components are arranged at the polarization
Between spectrum groupware and the lens subassembly, alternatively, the polarization state rotary components are arranged at the lens subassembly and described the
Between one light polarization modulator, the polarization state rotary components are used to adjust the polarization state of the reflected beams, so that the reflection
Light beam and transmitted light beam have identical polarization state.
Optionally, the lens subassembly includes the first lens subassembly and the second lens subassembly, the Polarization Modulation component bag
Include the first light polarization modulator, the second light polarization modulator and the 3rd light polarization modulator；
The polarization spectro component is used to for the projected light beam to be 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, first lens subassembly reflects for adjusting described first
The direction of propagation of light beam so that the direction of propagation of first the reflected beams turns to the projection screen, second lens group
Part is used to adjust the direction of propagation of second the reflected beams so that the direction of propagation of second the reflected beams turns to the throwing
Shadow screen；
First light polarization modulator is arranged between first lens subassembly and the projection screen, and described second partially
The modulator that shakes is arranged between the polarization spectro component and the projection screen, and the 3rd light polarization modulator is arranged at described
Between second lens subassembly and the projection screen, first light polarization modulator, the second light polarization modulator and the 3rd polarization are adjusted
Device processed is used to modulate the polarization state of first the reflected beams, transmitted light beam and the second the reflected beams respectively according to frame sequential, makes
The polarization state of first the reflected beams, transmitted light beam and the second the reflected beams switches according to frame sequential.
Optionally, described device further includes the first polarization state rotary components and the second polarization state rotary components；
The first polarization state rotary components are arranged between the polarization spectro component and first lens subassembly, institute
The second polarization state rotary components are stated to be arranged between the polarization spectro component and second lens subassembly；Alternatively, described
One polarization state rotary components are arranged between first lens subassembly and first light polarization modulator, second polarization state
Rotary components are arranged between second lens subassembly and the 3rd light polarization modulator；
The first polarization state rotary components and the second polarization state rotary components are respectively used to adjust first reflected light
Beam and the polarization state of second the reflected beams, so that first the reflected beams, second the reflected beams and the transmission
Light beam has identical polarization state.
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 that the stereoprojection imaging device is provided for first aspect present invention into
As device；
Projection screen, for each projected light beam with identical polarization state modulated for the stereoprojection imaging device
It is imaged, and imaging is reflexed to the 3D glasses of user's wearing.
A kind of stereoprojection imaging device provided in an embodiment of the present invention includes：Polarization spectro component, lens subassembly, polarization
Modulation component；The projected light beam that the polarization spectro component is used to send binocular projector is decomposed into the first polarization state
Transmitted light beam and the reflected beams with the second polarization state；Compared to existing technologies, the present invention can use said lens
Component replaces traditional speculum, to adjust the direction of propagation of above-mentioned the reflected beams, so that the direction of propagation of above-mentioned the reflected beams
Projection screen is turned to, since regular plated film is not required in said lens component, the embodiment of the present invention can effectively reduce
State the maintenance cost of stereoprojection imaging device.
Description of the drawings
It in order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
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 structure diagram of first embodiment of the invention neutral body projection imaging device；
Fig. 2 is the structure diagram of second embodiment of the invention neutral body projection imaging device；
Fig. 3 a are another structure diagram of second embodiment of the invention neutral body projection imaging device；
Fig. 3 b are the another structure diagram of second embodiment of the invention neutral body projection imaging device；
Fig. 4 is the another structure diagram of second embodiment of the invention neutral body projection imaging device；
Fig. 5 is the structure diagram of third embodiment of the invention neutral body projection imaging device；
Fig. 6 a are another structure diagram of third embodiment of the invention neutral body projection imaging device；
Fig. 6 b are the another structure diagram of third embodiment of the invention neutral body projection imaging device；
Fig. 7 is the another structure diagram of third embodiment of the invention neutral body projection imaging device.
Specific embodiment
Goal of the invention, feature, advantage to enable the present invention is more apparent and understandable, below in conjunction with the present invention
The technical solution in the embodiment of the present invention is clearly and completely described in attached drawing in embodiment, it is clear that described reality
It is only 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
Member's all other embodiments obtained without making creative work, belong to the scope of protection of the invention.
Referring to Fig. 1, Fig. 1 is the structure diagram of first embodiment of the invention neutral body projection imaging device, the present invention
In embodiment, above-mentioned stereoprojection imaging device 100 includes：Polarization spectro component 110, lens subassembly 120 and Polarization Modulation group
Part 130；
Polarization spectro component 110 is used to the projected light beam that binocular projector 200 sends being decomposed into the first polarization state
Transmitted light beam and with the second polarization state the reflected beams；
Lens subassembly 120 is arranged in the light path where above-mentioned the reflected beams, for adjusting the propagation of above-mentioned the reflected beams
Direction, so that the direction of propagation of above-mentioned the reflected beams turns to projection screen 300；
Polarization Modulation component 130 is arranged in the light path where above-mentioned transmitted light beam and the reflected beams, for suitable according to frame
Sequence modulates the polarization state of above-mentioned transmitted light beam and the reflected beams.
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
Light beam has the polarization states such as unified linear polarization or circular polarization before projection screen 300 is projected to, and projection screen 300 again will
Projected light beam with polarization state is reflexed in the 3D glasses of spectators' wearing, wherein, projection screen 300 need to have polarization-maintaining spy
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, similar to video is played, 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
The video playing for requiring binocular projector 200 that can support frame rate as 100HZ or higher frame rate on hardware, it is micro- to can be used number
Mirror projecting apparatus, liquid crystal over silicon formula projecting apparatus 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 110
Projected light beam is divided into two kinds of light beams with different polarization states by component 110, that is, is decomposed into the transmitted light with the first polarization state
Beam and the reflected beams with the second polarization state.Then, the direction of propagation of above-mentioned the reflected beams is adjusted by lens subassembly 120, is made
The direction of propagation of above-mentioned the reflected beams turns to projection screen 300.Wherein, above-mentioned transmitted light beam is believed with the image that the reflected beams carry
Manner of breathing with and image space on projection screen 300 it is identical.Wherein, lens subassembly 120 has certain refraction angle, can
To change the direction of propagation of above-mentioned the reflected beams by reflecting.For example, lens subassembly 120 may be employed by optical treatment
Prism.
Wherein, polarization spectro component 110 may be employed polarization beam splitter and is polarized to be split, and can also use optical line
Grid, which are split, to be polarized.
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 polarization state rotary components (not shown in figure 1), should
Polarization state rotary components may be disposed between polarization spectro component 110 and lens subassembly 120, can also be arranged at lens subassembly
Between 120 and Polarization Modulation component 130, for adjusting the polarization state in above-mentioned the reflected beams so that above-mentioned the reflected beams and thoroughly
Irradiating light beam has identical polarization state, i.e., for the polarization state of above-mentioned the reflected beams to be adjusted to the first polarization from the second polarization state
State.
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 makes the polarization state of above-mentioned transmitted light beam and the reflected beams switch according to frame sequential, wherein it is possible to make above-mentioned transmitted light beam with it is anti-
The polarization state of irradiating light beam according to frame sequential between above-mentioned first polarization state and the second polarization state or default 3rd polarization state with
Switch between 4th polarization state.For example, above-mentioned transmitted light beam and the reflected beams are modulated to the 3rd polarization state simultaneously in present frame,
Above-mentioned transmitted light beam and the reflected beams are modulated to the 4th polarization state in next frame.
Wherein, above-mentioned 3rd polarization state and the 4th polarization state be the polarization direction of circular polarization or elliptical polarization and the two just
It hands over, such as the 3rd polarization state is anticlockwise polarised light, the 4th polarization state is right rotation polarised light.
Wherein, it is corresponding to depend on above-mentioned stereoprojection imaging device 100 for the modulation system of above-mentioned Polarization Modulation component 130
The polarization state of 3D 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 transmitted light beam and the reflected beams switches according to frame sequential between above-mentioned first polarization state and the second polarization state；When this
When the polarization state of 3D glasses is circular polarization or elliptical polarization, above-mentioned Polarization Modulation component 130 can then modulate above-mentioned transmitted light beam
Switch with the polarization states of the reflected beams according to frame sequential between above-mentioned 3rd polarization state and the 4th polarization state.
Stereoprojection imaging device 100 provided in an embodiment of the present invention includes：Polarization spectro component 110, lens subassembly
120th, Polarization Modulation component 130；Polarization spectro component 110 is used to the projected light beam that binocular projector 200 sends being decomposed into tool
There are the transmitted light beam of the first polarization state and the reflected beams with the second polarization state；Compared to existing technologies, the present invention can
Lens subassembly 120 to be used to replace traditional speculum, to adjust the direction of propagation of above-mentioned the reflected beams, so that above-mentioned reflected light
The direction of propagation of beam turns to projection screen 300, and since regular plated film is not required in said lens component, the embodiment of the present invention can
To effectively reduce the maintenance cost of above-mentioned stereoprojection imaging device 100.
Further, based on first embodiment of the invention, projected with reference to Fig. 2, Fig. 2 for second embodiment of the invention neutral body
The structure diagram of imaging device, in the embodiment of the present invention, Polarization Modulation component 130 includes the first light polarization modulator 131 and the
Two light polarization modulators 132；
First light polarization modulator 131 is arranged between lens subassembly 120 and projection screen 300, the second light polarization modulator 132
It is arranged between polarization spectro component 110 and projection screen 300, the first light polarization modulator 131 is used with the second light polarization modulator 132
In modulating above-mentioned the reflected beams and the polarization state of transmitted light beam according to frame sequential so that above-mentioned the reflected beams and transmitted light beam it is inclined
Polarization state switches according to frame sequential.
Further, with reference to another structure that Fig. 3 a, Fig. 3 a are second embodiment of the invention neutral body projection imaging device
Schematic diagram, in the embodiment of the present invention, above device 100 further includes polarization state rotary components 140, and polarization state rotary components 140 are set
It is placed between polarization spectro component 110 and lens subassembly 120, for adjusting the polarization state in above-mentioned the reflected beams, so that above-mentioned
The reflected beams and above-mentioned transmitted light beam have identical polarization state.
Further, with reference to the another structure that Fig. 3 b, Fig. 3 b are second embodiment of the invention neutral body projection imaging device
Schematic diagram, in fig 3b, polarization state rotary components 140 are arranged between 120 and first light polarization modulator 131 of lens subassembly, are used
In adjusting the polarization state in above-mentioned the reflected beams, so that above-mentioned the reflected beams and above-mentioned transmitted light beam have identical polarization state.
Wherein, with reference to Fig. 4, Fig. 4 is the another structure diagram of second embodiment of the invention neutral body projection imaging device,
Polarization Modulation component 130 is stated in fig. 4, the upper as an entirety, for modulating above-mentioned the reflected beams and transmitted light according to frame sequential
The polarization state of beam so that above-mentioned the reflected beams and the polarization state of transmitted light beam switch according to frame sequential.
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 during 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, make above-mentioned the reflected beams and the polarization state of transmitted light beam by
Switch according to frame sequential.
Stereoprojection imaging device 100 provided in an embodiment of the present invention includes：Polarization spectro component 110, lens subassembly
120th, the first light polarization modulator 131 and the second light polarization modulator 132；Polarization spectro component 110 is used to send out binocular projector 200
The projected light beam gone out is decomposed into the transmitted light beam with the first polarization state and the reflected beams with the second polarization state；Compared to existing
For having technology, above-mentioned the reflected beams and transmitted light beam are modulated using independent Polarization Modulation component, can effectively be dropped
The use cost of low Polarization Modulation component, meanwhile, the embodiment of the present invention replaces traditional speculum using lens subassembly 120, comes
The direction of propagation of above-mentioned the reflected beams is adjusted, so that the direction of propagation of above-mentioned the reflected beams turns to projection screen 300, can also be had
The maintenance cost of the above-mentioned stereoprojection imaging device 100 of reduction of effect.
Further, based on first embodiment of the invention, projected with reference to Fig. 5, Fig. 5 for third embodiment of the invention neutral body
The structure diagram of imaging device, in the embodiment of the present invention, lens subassembly 120 includes the first lens subassembly 121 and the second lens
Component 122, Polarization Modulation component 130 include the first light polarization modulator 131, the second light polarization modulator 132 and the 3rd Polarization Modulation
Device 133.
Polarization spectro component 110 is used to projected light beam being decomposed into transmitted light beam with the first polarization state and with second
First the reflected beams of polarization state and the second the reflected beams, the first lens subassembly 121 are used to adjust above-mentioned first the reflected beams
The direction of propagation so that the direction of propagation of above-mentioned first the reflected beams turns to above-mentioned projection screen 300, and the second lens subassembly 122 is used
In 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 the projection screen
Curtain 300.
First light polarization modulator 131 is arranged between the first lens subassembly 121 and projection screen 300, the second Polarization Modulation
Device 132 is arranged between polarization spectro component 110 and projection screen 300, and the 3rd light polarization modulator 133 is arranged at the second lens group
Between part 122 and projection screen 300, the first light polarization modulator 131, the second light polarization modulator 132 and the 3rd light polarization modulator 133
For modulating the polarization state of above-mentioned first the reflected beams, transmitted light beam and the second the reflected beams according to frame sequential, make above-mentioned first
The polarization state of the reflected beams, transmitted light beam and the second the reflected beams switches according to frame sequential.
Wherein, the first polarization state of the light beam that 110 beam splitting of polarization spectro component go out and the second polarization state 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
Spectrum groupware 110 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.Wherein,
In order to make above-mentioned first the reflected beams and the second the reflected beams through the first lens subassembly 121 and the second lens subassembly 122 it
Afterwards, the same area into projection screen can preferably be projected, the corner dimension between above-mentioned two substrate can be less than
45°.Be polarized in addition, polarization beam splitter may be employed in polarization spectro component 110 to be split, can also use optics wiregrating into
Row beam splitting is polarized.
Further, with reference to another structure that Fig. 6 a, Fig. 6 a are third embodiment of the invention neutral body projection imaging device
Schematic diagram, in the embodiment of the present invention, above-mentioned stereoprojection imaging device 100 further includes the first polarization state rotary components 141 and
Two polarization state rotary components 142, the first polarization state rotary components 141 may be disposed at 110 and first lens group of polarization spectro component
Between part 121, the second polarization state rotary components 142 may be disposed between 110 and second lens subassembly 122 of polarization spectro component,
First polarization state rotary components 141 and the second polarization state rotary components 142 are used to adjust above-mentioned first the reflected beams and second instead
The polarization state of irradiating light beam, so that above-mentioned first the reflected beams, the second the reflected beams and above-mentioned transmitted light beam have identical polarization
State.
Further, with reference to the another structure that Fig. 6 b, Fig. 6 b are third embodiment of the invention neutral body projection imaging device
Schematic diagram, in figure 6b, the first polarization state rotary components 141 are arranged at the first lens subassembly 121 and the first light polarization modulator 131
Between, the second polarization state rotary components 142 are arranged between the second lens subassembly 122 and the 3rd light polarization modulator 133, and first partially
141 and second polarization state rotary components 142 of polarization state rotary components are used to adjust above-mentioned first the reflected beams and the second the reflected beams
Polarization state so that above-mentioned first the reflected beams, the second the reflected beams and above-mentioned transmitted light beam have identical polarization state.
Wherein, with reference to Fig. 7, Fig. 7 is the another structure diagram of third embodiment of the invention neutral body projection imaging device,
In the figure 7, above-mentioned Polarization Modulation component 130 is an entirety, for modulating above-mentioned first the reflected beams, transmission according to frame sequential
The polarization state of light beam and the second the reflected beams makes the polarization state of above-mentioned the reflected beams and transmitted light beam switch according to frame sequential.
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 the polarization state of above-mentioned first the reflected beams, 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 the 3rd 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, the polarization state for making above-mentioned first the reflected beams, transmitted light beam and the second the reflected beams are suitable according to frame
Sequence switches between above-mentioned first polarization state and the second polarization state or between above-mentioned 3rd polarization state and the 4th polarization state.
Stereoprojection imaging device 100 provided in an embodiment of the present invention, lens subassembly 120 include the first lens subassembly 121
With the second lens subassembly 122, Polarization Modulation component 130 includes the first light polarization modulator 131, the second light polarization modulator 132 and the
Three light polarization modulators 133, polarization spectro component 110 are used to above-mentioned projected light beam being decomposed into the transmitted light with the first polarization state
Beam and the first the reflected beams and the second the reflected beams with the second polarization state, compared to existing technologies, the present invention can be with
Traditional speculum is replaced using above-mentioned first lens subassembly 121, to adjust the direction of propagation of above-mentioned first the reflected beams, so that
The direction of propagation of above-mentioned first the reflected beams turns to projection screen and replaces traditional reflection using the second lens subassembly 122
Mirror, to adjust the direction of propagation of above-mentioned second the reflected beams, so that the direction of propagation of above-mentioned second the reflected beams turns to projection screen
Curtain, since regular plated film is not required in above-mentioned first lens subassembly, 121 and second lens subassembly 122, the embodiment of the present invention can
To effectively reduce the maintenance cost of above-mentioned stereoprojection imaging device 100.
Further, based on first embodiment of the invention to 3rd embodiment, 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
For the 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 employed 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
Into 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 set 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, all emphasize 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 above the description to a kind of stereoprojection imaging device provided by the present invention and stereoscopic image showing system, it is right
In those skilled in the art, according to the thought of the embodiment of the present invention, have change in specific embodiments and applications
Become part, to sum up, this specification content should not be construed as limiting the invention.
Claims (6)
1. a kind of stereoprojection imaging device, which is characterized in that described device includes：Polarization spectro component, lens subassembly and partially
Shake modulation component；
The projected light beam that the polarization spectro component is used to send binocular projector is decomposed into the transmission with the first polarization state
Light beam and the reflected beams with the second polarization state；
The lens subassembly is arranged in the light path where the reflected beams, for adjusting the propagation side of the reflected beams
To so that the direction of propagation of the reflected beams turns to projection screen；
The Polarization Modulation component is arranged in the light path where the transmitted light beam and the reflected beams, for according to frame sequential tune
Make the polarization state of the transmitted light beam and the reflected beams.
2. the apparatus according to claim 1, which is characterized in that the Polarization Modulation component include the first light polarization modulator with
Second light polarization modulator；
First light polarization modulator is arranged between the lens subassembly and the projection screen, second light polarization modulator
It is arranged between the polarization spectro component and the projection screen, first light polarization modulator and the second light polarization modulator are used
In modulating the reflected beams and the polarization state of transmitted light beam respectively according to frame sequential, make the reflected beams and transmitted light beam
Polarization state switches 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 arranged between the polarization spectro component and the lens subassembly, alternatively, the polarization state rotary components
It is arranged between the lens subassembly and first light polarization modulator, the polarization state rotary components are used to adjust the reflection
The polarization state of light beam, so that the reflected beams and transmitted light beam have identical polarization state.
4. the apparatus according to claim 1, which is characterized in that the lens subassembly includes the first lens subassembly and second thoroughly
Mirror assembly, the Polarization Modulation component include the first light polarization modulator, the second light polarization modulator and the 3rd light polarization modulator；
The polarization spectro component is used to the projected light beam being decomposed into transmitted light beam with the first polarization state and with the
First the reflected beams of two polarization states and the second the reflected beams, first lens subassembly are used to adjust first the reflected beams
The direction of propagation so that the directions of propagation of first the reflected beams turns to the projection screen, and second lens subassembly is used
In 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
Curtain；
First light polarization modulator is arranged between first lens subassembly and the projection screen, and second polarization is adjusted
Device processed is arranged between the polarization spectro component and the projection screen, and the 3rd light polarization modulator is arranged at described second
Between lens subassembly and the projection screen, first light polarization modulator, the second light polarization modulator and the 3rd light polarization modulator
For modulating first the reflected beams, transmitted light beam and the polarization state of the second the reflected beams respectively according to frame sequential, make described
The polarization state of first the reflected beams, transmitted light beam and the second the reflected beams switches according to frame sequential.
5. device according to claim 4, which is characterized in that described device further includes the first polarization state rotary components and
Two polarization state rotary components；
The first polarization state rotary components are arranged between the polarization spectro component and first lens subassembly, and described
Two polarization state rotary components are arranged between the polarization spectro component and second lens subassembly；Alternatively, described first is inclined
Polarization state rotary components are arranged between first lens subassembly and first light polarization modulator, the second polarization state rotation
Component is arranged between second lens subassembly and the 3rd light polarization modulator；
The first polarization state rotary components and the second polarization state rotary components be respectively used to adjust first the reflected beams with
The polarization state of second the reflected beams, so that first the reflected beams, second the reflected beams and the transmitted light beam
With identical polarization state.
6. 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 5 any one
Imaging device；
Projection screen, for each projected light beam with identical polarization state for modulating for the stereoprojection imaging device into
Picture, and by imaging reflex to user wearing 3D glasses.
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| CN201810044145.XA CN108051977A (en) | 2018-01-17 | 2018-01-17 | Stereoprojection imaging device and stereoscopic image showing system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116540212A (en) * | 2023-07-06 | 2023-08-04 | 中国空气动力研究与发展中心超高速空气动力研究所 | Three-dimensional imaging device and method |
| WO2024051215A1 (en) * | 2022-09-09 | 2024-03-14 | 华为技术有限公司 | Three-dimensional image acquisition apparatus, and related device and method |
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2018
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024051215A1 (en) * | 2022-09-09 | 2024-03-14 | 华为技术有限公司 | Three-dimensional image acquisition apparatus, and related device and method |
| CN116540212A (en) * | 2023-07-06 | 2023-08-04 | 中国空气动力研究与发展中心超高速空气动力研究所 | Three-dimensional imaging device and method |
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