CN207992674U - Four light path stereoprojection polarization modulating arrangements and four light path stereo projection systems - Google Patents
Four light path stereoprojection polarization modulating arrangements and four light path stereo projection systems Download PDFInfo
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- CN207992674U CN207992674U CN201820079344.XU CN201820079344U CN207992674U CN 207992674 U CN207992674 U CN 207992674U CN 201820079344 U CN201820079344 U CN 201820079344U CN 207992674 U CN207992674 U CN 207992674U
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Abstract
The utility model discloses a kind of four light path stereoprojection polarization modulating arrangements and four light path stereo projection systems, device to include：Reflection beam splitting component, the first polarization spectro component, the second polarization spectro component, the first reflection subassembly, the second reflection subassembly and Polarization Modulation component；Compared to existing technologies, the projected light beam that binocular projector sends out is decomposed into the first projected light beam and the second projected light beam by the utility model using above-mentioned reflection beam splitting component, then it is projected to projection screen after carrying out polarization spectro and Polarization Modulation to the first projected light beam and the second projected light beam respectively again, since above-mentioned reflection beam splitting component is served only for above-mentioned projected light beam being decomposed into the different reflected light in the two beam directions of propagation, and transmitted light is not present, therefore it will not cause damages to projected light beam, so as to effectively ensure that projected image is unaffected.
Description
Technical field
The utility model is related to digital camera three-dimensional projection fields, more particularly to a kind of four light path stereoprojection Polarization Modulations
Device and four light path stereo projection systems.
Background technology
The viewing principle of stereopsis is to receive the right and left eyes video figure played according to frame sequential respectively by the right and left eyes of people
Picture is synthesized right and left eyes video image using brain, generates stereoscopic effect.Current right and left eyes receive the technology of image
Mainly there are left and right polarization spectro mode, the red blue spectroscopic modes of the left and right shutter release method of synchronization and left and right etc., wherein left and right polarization
The use of spectroscopic modes is more extensive.
Wherein, in the polarization spectro mode of left and right, three light path polarization spectro skills successively are produced according to technology development track
Art.In three light path polarizing beamsplitter systems, as shown in Figure 1, being mainly based upon the polarization of two groups of ramp types with certain angle
Amici prism realizes that the projected light beam from projector is by the P polarization light that this two groups of polarization splitting prism beam splitting are a branch of transmission
With the S-polarization light of two beams reflection, P polarization light is then converted into S-polarization light again or S-polarization light is converted into P polarization light, finally
Unify three-beam being modulated to left circularly polarized light or right-circularly polarized light according to frame sequential again.
It is in the shape of the letter V, and is connected since the polarization splitting prism of the above-mentioned two groups ramp types with certain angle is connected with each other
It is formed by the protrusion direction of ridge and the direction of propagation contrary of projected light beam, therefore, when projected light beam exposes to two groups of polarizations point
When light prism is formed by ridge, certain refraction can occur in the position of ridge for projected light beam, cause some light beam can not be from
The position transmissive of ridge, therefore, when above-mentioned transmitted light beam is projected to curtain, the center of projected image will appear one
The tiny black-tape of item influences the viewing experience of the viewing masses.
Utility model content
The utility model provides four light path stereoprojection polarization modulating arrangements of one kind and four light path stereo projection systems, can
When being divided to solve the polarization splitting prism in the prior art being arranged using V-shaped, projected light beam can be caused to penetrate
The technical problem lost a part of light beam when polarization splitting prism, and then cause drop shadow effect bad.
To achieve the above object, the utility model first aspect provides a kind of four light path stereoprojection polarization modulating arrangements,
Described device includes：Reflection beam splitting component, the first polarization spectro component, the second polarization spectro component, the first reflection subassembly, second
Reflection subassembly and Polarization Modulation component；
The reflection beam splitting component is used to the projected light beam that binocular projector sends out being decomposed into the first projected light beam and the
Two projected light beams；
The first polarization spectro component is set to the light path where first projected light beam, for being thrown described first
Shadow light beam is decomposed into the first transmitted light beam with the first polarization state and the first the reflected beams with the second polarization state, and described
Two polarization spectro components are set to the light path where second projected light beam, for second projected light beam to be decomposed into tool
There are the second transmitted light beam of the first polarization state and the second the reflected beams with the second polarization state；
First reflection subassembly is used to adjust the direction of propagation of first transmitted light beam, makes first transmitted light beam
The direction of propagation turn to projection screen, second reflection subassembly is used to adjust the direction of propagation of second transmitted light beam, make
The direction of propagation of second transmitted light beam turns to projection screen；
The Polarization Modulation component is used to modulate first transmitted light beam, the first the reflected beams, second according to frame sequential
The polarization state of transmitted light beam and the second the reflected beams so that first transmitted light beam, the first the reflected beams, the second transmitted light beam
And second the reflected beams polarization state according to frame sequential between first polarization state and the second polarization state or preset third
Switch between polarization state and the 4th polarization state.
Optionally, described device further includes the first polarization converted unit and the second polarization converted unit；
The first polarization converted unit is set between first reflection subassembly and the Polarization Modulation component, is used
In by the polarization state of first transmitted light beam from the first polarization converted be the second polarization state；
The second polarization converted unit is set between second reflection subassembly and the Polarization Modulation component, is used
In by the polarization state of second transmitted light beam from the first polarization converted be the second polarization state.
Optionally, described device further includes the first polarization converted unit and the second polarization converted unit；
The first polarization converted unit be set to the first polarization spectro component and first reflection subassembly it
Between, for by the polarization state of first transmitted light beam from the first polarization converted be the second polarization state；
The second polarization converted unit be set to the second polarization spectro component and second reflection subassembly it
Between, for by the polarization state of second transmitted light beam from the first polarization converted be the second polarization state.
Optionally, described device further includes the first polarization converted unit and the second polarization converted unit；
The first polarization converted unit be set to the first polarization spectro component and the Polarization Modulation component it
Between, for by the polarization state of first the reflected beams from the second polarization converted be the first polarization state；
The second polarization converted unit be set to the second polarization spectro component and the Polarization Modulation component it
Between, for by the polarization state of second the reflected beams from the second polarization converted be the first polarization state.
Optionally, the Polarization Modulation component includes the first Polarization Modulation component and the second Polarization Modulation component；
The first Polarization Modulation component is set to the light where first transmitted light beam and first the reflected beams
On the road, the second Polarization Modulation component is set to the light path where second transmitted light beam and second the reflected beams
On；
The first Polarization Modulation component is used to modulate first transmitted light beam, the first the reflected beams according to frame sequential
Polarization state, the second Polarization Modulation component are used to modulate second transmitted light beam and the second the reflected beams according to frame sequential
Polarization state so that first transmitted light beam, the first the reflected beams, the polarization state of the second transmitted light beam and the second the reflected beams are pressed
According to frame sequential simultaneously between first polarization state and the second polarization state or preset third polarization state and the 4th polarization state it
Between switch.
Optionally, first polarization state and the second polarization state are that the polarization direction of linear polarization and the two is orthogonal, described
Third polarization state and the 4th polarization state are that the polarization direction of circular polarization or elliptical polarization and the two is orthogonal.
Optionally, reflection beam splitting component includes the substrate that two surfaces are coated with reflecting coating, and described two substrates are each other
It is connected and is in the shape of the letter V, and the direction of propagation contrary of the be connected protrusion direction and the projected light beam that are formed by ridge.
Optionally, described device further includes shake component, and the shake component is done for controlling the reflection beam splitting component
Periodic jitter or aperiodicity shake；
Alternatively, the shake component is used to control the first polarization spectro component and the second polarization spectro component does the period
Property shake or aperiodicity shake；
Alternatively, the shake component for control first reflection subassembly and the second reflection subassembly do periodic jitter or
Aperiodicity is shaken.
To achieve the above object, the utility model second aspect provides a kind of four light path stereo projection systems, the system
Including：
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；
Four light path stereoprojection polarization modulating arrangements, the four light paths stereoprojection polarization modulating arrangement are the utility model
The four light path stereoprojection polarization modulating arrangements that first aspect provides；
Projection screen, for for the four light paths stereoprojection polarization modulating arrangement modulate with identical polarization state
Each projected light beam imaging, and imaging is reflexed into the 3D glasses that user wears.
Four light paths stereoprojection polarization modulating arrangement provided by the utility model, including：Reflection beam splitting component, first are partially
Shake spectrum groupware, the second polarization spectro component, the first reflection subassembly, the second reflection subassembly and Polarization Modulation component, compared to existing
For having technology, the projected light beam that binocular projector sends out is decomposed by the utility model using above-mentioned reflection beam splitting component
One projected light beam and the second projected light beam, then again respectively to the first projected light beam and the second projected light beam carry out polarization spectro and
Projection is to projection screen after Polarization Modulation, since above-mentioned reflection beam splitting component is served only for above-mentioned projected light beam being decomposed into two beams biography
The different reflected light in direction is broadcast, and transmitted light is not present, therefore will not be caused damages to projected light beam, so as to effectively protect
It is unaffected to demonstrate,prove projected image.
Description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those skilled in the art, without creative efforts, also
It can be obtain other attached drawings according to these attached drawings.
Fig. 1 is the structural schematic diagram of ramp type polarization splitting prism in the prior art；
Fig. 2 is the structural schematic diagram of four light path stereoprojection polarization modulating arrangements in the utility model first embodiment；
Fig. 3 is the structural schematic diagram of four light path stereoprojection polarization modulating arrangements in the utility model second embodiment；
Fig. 4 is the structural schematic diagram of four light path stereoprojection polarization modulating arrangements in the utility model 3rd embodiment；
Fig. 5 is the structural schematic diagram of four light path stereoprojection polarization modulating arrangements in the utility model fourth embodiment；
Fig. 6 is the structural schematic diagram of four light path stereoprojection polarization modulating arrangements in the 5th embodiment of the utility model.
Specific implementation mode
To enable the purpose of this utility model, feature, advantage more apparent and understandable, below in conjunction with this practicality
Attached drawing in new embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that institute
The embodiment of description is only the utility model a part of the embodiment, and not all embodiments.Based on the reality in the utility model
Example is applied, the every other embodiment that those skilled in the art are obtained without making creative work belongs to this
The range of utility model protection.
Referring to Fig. 2, Fig. 2 is the structure of four light path stereoprojection polarization modulating arrangements in the utility model first embodiment
Schematic diagram, in the present embodiment, above-mentioned four light paths stereoprojection polarization modulating arrangement includes：Reflection beam splitting component 10, first polarizes
Spectrum groupware 20, the second polarization spectro component 30, the first reflection subassembly 40, the second reflection subassembly 50 and Polarization Modulation component 60；
Reflection beam splitting component 10 is used to the projected light beam that binocular projector 70 sends out being decomposed into the first projected light beam and the
Two projected light beams；
First polarization spectro component 20 is set to the light path where above-mentioned first projected light beam, for being projected above-mentioned first
Light beam is decomposed into the first transmitted light beam with the first polarization state and the first the reflected beams with the second polarization state, the second polarization
Spectrum groupware 30 is set to the light path where above-mentioned second projected light beam, for being decomposed into above-mentioned second projected light beam with
Second transmitted light beam of one polarization state and the second the reflected beams with the second polarization state；
First reflection subassembly 40 is used to adjust the direction of propagation of above-mentioned first transmitted light beam, makes above-mentioned first transmitted light beam
The direction of propagation turns to projection screen 80, and the second reflection subassembly 50 is used to adjust the direction of propagation of above-mentioned second transmitted light beam, makes
The direction of propagation for stating the second transmitted light beam turns to projection screen 80；
Polarization Modulation component 60 is used to modulate above-mentioned first transmitted light beam, the first the reflected beams, second thoroughly according to frame sequential
The polarization state of irradiating light beam and the second the reflected beams so that above-mentioned first transmitted light beam, the first the reflected beams, the second transmitted light beam and
The polarization state of second the reflected beams switches according to frame sequential between preset third polarization state and the 4th polarization state.
Wherein, the four light path stereoprojection polarization modulating arrangements that the present embodiment is provided are positioned over stereoprojection when in use
Between instrument 70 and projection screen 80, the projected light beam for being projected to binocular projector 70 carries out optical effect, makes projection
Light beam has the polarization states such as unified linear polarization or circular polarization, projection screen 80 again will tool before being projected to projection screen 80
There is the projected light beam of polarization state to reflex in the 3D glasses of spectators' wearing, wherein projection screen 80 there need to be polarization property, i.e.,
Projection screen 80 cannot change the polarization state of projected light beam during reflected projection beam, and generally use metal curtain is real
It is existing.
First, 70 alternating projection of binocular projector goes out to carry the projected light beam of left-eye images information and carries right eye shadow
It as the projected light beam of information, such as can be projected in a manner of frame sequential, be similar to and play video, the T1 moment, which projects, carries left eye
The projected light beam of image information, the T2 moment projects the projected light beam for carrying right-eye image information, the T3 moment projects carrying left eye again
The projected light beam of image information, T4 moment project the projected light beam ... ... for carrying right-eye image information again, and so on.From hard
It requires binocular projector 70 that can support that frame rate is the video playing of 100HZ or higher frame rate on part, digital micro-mirror can be used
Formula projector, liquid crystal over silicon formula projector etc..
Then, projected light beam is split by reflection beam splitting component 10, in the present embodiment, reflection beam splitting component 10 will be thrown
Shadow light beam is decomposed into the first projected light beam and the second projected light beam, and the first projected light beam and the second projected light beam are having the same
Polarization state.
Further, above-mentioned first projected light beam is decomposed into the first polarization state by the first polarization spectro component 20
First transmitted light beam and the first the reflected beams with the second polarization state, are projected by the second polarization spectro component 30 by above-mentioned second
Light beam is decomposed into the second transmitted light beam with the first polarization state and the second the reflected beams with the second polarization state；Then pass through
First reflection subassembly 40 adjusts the direction of propagation of above-mentioned first transmitted light beam, and the direction of propagation of above-mentioned first transmitted light beam is made to turn to
Projection screen 80 adjusts the direction of propagation of above-mentioned second transmitted light beam by the second reflection subassembly 50, makes above-mentioned second transmitted light
The direction of propagation of beam turns to projection screen 80.
Wherein, above-mentioned first transmitted light beam is identical as the image information that the first the reflected beams carry and in projection screen
Image space on 80 is identical；Above-mentioned second transmitted light beam is identical as the image information that the second the reflected beams carry and is throwing
Image space on shadow screen 80 is also identical.In addition, above-mentioned first transmitted light beam and the second transmitted light beam can be in projection screens 80
On be spliced into the complete projected image of a width, above-mentioned first transmitted light beam can also be spelled with the second transmitted light beam on projection screen 80
It is connected in the complete projected image of a width.
Further, above-mentioned four light paths stereoprojection polarization modulating arrangement further includes polarization state rotary components, the polarization state
Rotary components are used to adjust the polarization state of above-mentioned first transmitted light beam and the second transmitted light beam so that above-mentioned first transmitted light beam and
The polarization state of second transmitted light beam is identical as above-mentioned first the reflected beams and the polarization state of the second the reflected beams；Alternatively, above-mentioned inclined
Polarization state rotary components are used to adjust the polarization state of above-mentioned first the reflected beams and the second the reflected beams, so that above-mentioned first reflected light
The polarization state of beam and the second the reflected beams is identical as above-mentioned first transmitted light beam and the polarization state of the second transmitted light beam.
Further, by Polarization Modulation component 60 according to frame sequential modulate above-mentioned first transmitted light beam, the first the reflected beams,
The polarization state of second transmitted light beam and the second the reflected beams so that above-mentioned first transmitted light beam, the first the reflected beams, the second transmission
The polarization state of light beam and the second the reflected beams switches according to frame sequential between preset third polarization state and the 4th polarization state.Example
Such as, above-mentioned first transmitted light beam, the first the reflected beams, the second transmitted light beam and the second the reflected beams are modulated simultaneously in present frame
For third polarization state, in next frame by above-mentioned first transmitted light beam, the first the reflected beams, the second transmitted light beam and the second reflected light
Beam is modulated to the 4th polarization state simultaneously.
In addition, above-mentioned Polarization Modulation component 60 can also modulate above-mentioned first transmitted light beam, the first reflection according to frame sequential
The polarization state of light beam, the second transmitted light beam and the second the reflected beams so that above-mentioned first transmitted light beam, the first the reflected beams,
The polarization state of two transmitted light beams 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, the modulation system of above-mentioned Polarization Modulation component 60 is corresponded to depending on above-mentioned four light paths stereoprojection polarization modulating arrangement
3D glasses polarization state, when the polarization state of the 3D glasses be linear polarization when, above-mentioned Polarization Modulation component 60 can then be modulated
The polarization states of the first transmitted light beam, the first the reflected beams, the second transmitted light beam and the second the reflected beams is stated according to frame sequential upper
It states and switches between the first polarization state and the second polarization state；When the polarization state of the 3D glasses is circular polarization, above-mentioned Polarization Modulation group
Part 60 can then modulate above-mentioned first transmitted light beam, the first the reflected beams, the second transmitted light beam and the second the reflected beams polarization
State switches according to frame sequential between above-mentioned third polarization state and the 4th polarization state.
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.Above-mentioned third polarization state and the 4th polarization state are circular polarization
Or the polarization direction of elliptical polarization and the two is orthogonal, such as third polarization state is anticlockwise polarised light, the 4th polarization state is dextrorotation
Turn polarised light.
The four light path stereoprojection polarization modulating arrangements that the utility model embodiment is provided, including：Reflection beam splitting component
10, the first polarization spectro component 20, the second polarization spectro component 30, the first reflection subassembly 40, the second reflection subassembly 50 and polarization
Modulation component 60, compared to existing technologies, the utility model are sent out binocular projector using reflection beam splitting component 10
Projected light beam be decomposed into the first projected light beam and the second projected light beam, then again respectively to the first projected light beam and second project
Light beam carries out after polarization spectro and Polarization Modulation projection to projection screen, since be served only for will be above-mentioned for above-mentioned reflection beam splitting component 10
Projected light beam is decomposed into the different reflected light in the two beam directions of propagation, and transmitted light is not present, therefore will not be caused to projected light beam
Loss, so as to effectively ensure that projected image is unaffected.
Further, it is based on the utility model first embodiment, is in the utility model second embodiment with reference to Fig. 3, Fig. 3
The structural schematic diagram of four light path stereoprojection polarization modulating arrangements, in the present embodiment, above-mentioned polarization state rotary components include first
Polarization converted unit 90 and the second polarization converted unit 100, the first polarization converted unit 90 are set to the first reflection group
Between part 40 and Polarization Modulation component 60, for by the polarization state of above-mentioned first transmitted light beam from the first polarization converted be second
Polarization state；Second polarization converted unit 100 is set between the second reflection subassembly 50 and Polarization Modulation component 60, for by
State the polarization state of the second transmitted light beam from the first polarization converted be the second polarization state.
The four light path stereoprojection polarization modulating arrangements that the utility model embodiment is provided further include that the first polarization state turns
Unit 90 and the second polarization converted unit 100 are changed, the first polarization converted unit 90 and the second polarization converted unit 100
Can by the polarization state of above-mentioned first transmitted light beam and the second transmitted light beam from the first polarization converted be the second polarization state, from
And make above-mentioned first transmitted light beam, the second transmitted light beam, the first the reflected beams and the second the reflected beams polarization state having the same,
Then above-mentioned first transmitted light beam, the first the reflected beams, the second transmission can be modulated according to frame sequential by Polarization Modulation component 60
The polarization state of light beam and the second the reflected beams makes above-mentioned first transmitted light beam, the first the reflected beams, the second transmitted light beam and second
The polarization state of the reflected beams is between above-mentioned first polarization state and the second polarization state or above-mentioned third polarization state and the 4th polarization state
Between switch.
Further, it is based on the utility model first embodiment, is in the utility model 3rd embodiment with reference to Fig. 4, Fig. 4
The structural schematic diagram of four light path stereoprojection polarization modulating arrangements, in the present embodiment, above-mentioned polarization state rotary components include first
Polarization converted unit 90 and the second polarization converted unit 100, the first polarization converted unit 90 are set to the first polarization point
Between optical assembly 20 and the first reflection subassembly 40, for being from the first polarization converted by the polarization state of above-mentioned first transmitted light beam
Second polarization state；Second polarization converted unit 100 is set between the second polarization spectro component 30 and the second reflection subassembly 50,
For by the polarization state of above-mentioned second transmitted light beam from the first polarization converted be the second polarization state.
The four light path stereoprojection polarization modulating arrangements that the utility model embodiment is provided further include that the first polarization state turns
Unit 90 and the second polarization converted unit 100 are changed, the first polarization converted unit 90 and the second polarization converted unit 100
Can by the polarization state of above-mentioned first transmitted light beam and the second transmitted light beam from the first polarization converted be the second polarization state, from
And make above-mentioned first transmitted light beam, the second transmitted light beam, the first the reflected beams and the second the reflected beams polarization state having the same,
Then above-mentioned first transmitted light beam, the first the reflected beams, the second transmission can be modulated according to frame sequential by Polarization Modulation component 60
The polarization state of light beam and the second the reflected beams makes above-mentioned first transmitted light beam, the first the reflected beams, the second transmitted light beam and second
The polarization state of the reflected beams is between above-mentioned first polarization state and the second polarization state or above-mentioned third polarization state and the 4th polarization state
Between switch.
Further, it is based on the utility model first embodiment, is in the utility model fourth embodiment with reference to Fig. 5, Fig. 5
The structural schematic diagram of four light path stereoprojection polarization modulating arrangements, in the present embodiment, above-mentioned polarization state rotary components include first
Polarization converted unit 90 and the second polarization converted unit 100, the first polarization converted unit 90 are set to the first polarization point
Between optical assembly 20 and Polarization Modulation component 60, for being from the second polarization converted by the polarization state of above-mentioned first the reflected beams
First polarization state；Second polarization converted unit 100 is set between the second polarization spectro component 30 and Polarization Modulation component 60,
For by the polarization state of above-mentioned second the reflected beams from the second polarization converted be the first polarization state.
The four light path stereoprojection polarization modulating arrangements that the utility model embodiment is provided further include that the first polarization state turns
Unit 90 and the second polarization converted unit 100 are changed, the first polarization converted unit 90 and the second polarization converted unit 100
Can by the polarization state of above-mentioned first the reflected beams and the second the reflected beams from the second polarization converted be the first polarization state, from
And make above-mentioned first transmitted light beam, the second transmitted light beam, the first the reflected beams and the second the reflected beams polarization state having the same,
Then above-mentioned first transmitted light beam, the first the reflected beams, the second transmission can be modulated according to frame sequential by Polarization Modulation component 60
The polarization state of light beam and the second the reflected beams makes above-mentioned first transmitted light beam, the first the reflected beams, the second transmitted light beam and second
The polarization state of the reflected beams is between above-mentioned first polarization state and the second polarization state or above-mentioned third polarization state and the 4th polarization state
Between switch.
Further, based on any one embodiment in the utility model first embodiment to fourth embodiment, reference
Fig. 6, Fig. 6 are the structural schematic diagram of four light path stereoprojection polarization modulating arrangements in the 5th embodiment of the utility model, this implementation
In example, above-mentioned Polarization Modulation component 60 includes the first Polarization Modulation component 61 and the second Polarization Modulation component 62；
First Polarization Modulation component 61 is set to the light path where above-mentioned first transmitted light beam and above-mentioned first the reflected beams
On, the second Polarization Modulation component 62 is set in the light path where above-mentioned second transmitted light beam and above-mentioned second the reflected beams；The
Polarization state of the one Polarization Modulation component 61 for modulating above-mentioned first transmitted light beam and the first the reflected beams according to frame sequential, second
Polarization Modulation component 62 is used to modulate the polarization state of above-mentioned second transmitted light beam and the second the reflected beams according to frame sequential so that on
The polarization states of the first transmitted light beam, the first the reflected beams, the second transmitted light beam and the second the reflected beams is stated according to frame sequential simultaneously
Switch between above-mentioned first polarization state and the second polarization state or between above-mentioned third polarization state and the 4th polarization state.
Wherein, reflection beam splitting component 10 includes the substrate that two surfaces are coated with reflecting coating, and described two substrates are each other
It is connected and is in the shape of the letter V, and the direction of propagation contrary of the be connected protrusion direction and the projected light beam that are formed by ridge.For example, reflection
The speculum group that spectrum groupware 10 can be connected with each other and be in the shape of the letter V by two at.
The four light path stereoprojection polarization modulating arrangements that the utility model embodiment is provided, Polarization Modulation component 60 can be with
It is split as the first Polarization Modulation component 61 and the second Polarization Modulation component 62, compared to existing technologies, above-mentioned first polarization
Modulation component 61 is only arranged in the light path where above-mentioned first transmitted light beam and above-mentioned first the reflected beams, the second Polarization Modulation
Component 62 is only arranged in the light path where above-mentioned second transmitted light beam and above-mentioned second the reflected beams, therefore the first Polarization Modulation
The sum of surface area of component 61 and the second Polarization Modulation component 62 can be less than the surface area of Polarization Modulation component 60, so as to have
The manufacturing cost of the above-mentioned four light paths stereoprojection polarization modulating arrangement of reduction of effect.
Further, it is based on the 5th embodiment of the utility model, proposes the utility model sixth embodiment, the present embodiment
In, above-mentioned apparatus further includes shake component, which does periodic jitter or non-for controlling above-mentioned reflection beam splitting component
Periodic jitter；Alternatively, the shake component is used to control above-mentioned first polarization spectro component and the second polarization spectro component does week
Phase property is shaken or aperiodicity shake；Alternatively, the shake component is for controlling above-mentioned first reflection subassembly and the second reflection subassembly
Do periodic jitter or aperiodicity shake.
Wherein, above-mentioned shake component can generate at least one cyclical signal or non-periodic signals, can drive
It states optical module and does periodic jitter or aperiodicity shake in two dimensional surface.Wherein, aperiodic shake refers to above-mentioned optics
A kind of irregular vibration that device carries out in two dimensional surface, vibration frequency can vibrate width in 1~100 hertz of random variation
Degree changes at random between 0.1 millimeter~3 millimeters.
It is understood that when above-mentioned shake component does periodic jitter or non-week for controlling above-mentioned reflection beam splitting component
When phase property is shaken, above-mentioned projected light beam by above-mentioned reflection beam splitting component after projecting on projection screen, on the projection screen
Stable speckle pattern would not be formed, since the reaction speed of human eye is limited, when the variation of speckle pattern is sufficiently fast,
Human eye is just not easy to view the speckle pattern of projection screen.
When above-mentioned shake component is for controlling above-mentioned first polarization spectro component and the second polarization spectro component does periodicity
When shake or aperiodicity are shaken, alternatively, when above-mentioned shake component is for controlling above-mentioned first reflection subassembly and the second reflection group
When part does periodic jitter or aperiodicity shake, it is based on reason identical with above-mentioned reflection beam splitting component, human eye is also not easy
View the speckle pattern of projection screen.
The four light path stereoprojection polarization modulating arrangements that the utility model embodiment is provided, pass through above-mentioned shake component control
It makes to control above-mentioned reflection beam splitting component or above-mentioned first polarization spectro component and the second polarization spectro component or above-mentioned first
Reflection subassembly and the second reflection subassembly do periodic jitter or aperiodicity movement, can effectively prevent in projected image and are formed
Stable speckle pattern, since the reaction speed of human eye is limited, when the variation of speckle pattern is sufficiently fast, human eye is not just allowed
The speckle pattern of projection screen is easily viewed, and then effectively avoiding projection screen the case where speckle occurs.
Further, the utility model first embodiment is based on to sixth embodiment, and the 7th embodiment of the utility model is also
Provide a kind of four light path stereo projection systems, including binocular projector, four light path stereoprojection polarization modulating arrangements and projection
Screen；Wherein, binocular projector for projecting projected light beam and the carrying for carrying left-eye images information with frame sequential successively
There is the projected light beam of right-eye image information；Four light path stereoprojection polarization modulating arrangements may be used any embodiment above and be carried
The four light path stereoprojection polarization modulating arrangements supplied；And projection screen is then used to fill for above-mentioned four light paths stereoprojection Polarization Modulation
Each projected light beam imaging with identical polarization state modulated is set, and imaging is reflexed to the 3D glasses of user's wearing.
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 to be retouched to a kind of stereoprojection imaging device provided by the utility model and stereoscopic image showing system above
It states, for those skilled in the art, based on the idea of the embodiment of the present invention, in specific embodiments and applications
There will be changes, to sum up, the content of the present specification should not be construed as a limitation of the present invention.
Claims (9)
1. a kind of four light path stereoprojection polarization modulating arrangements, which is characterized in that described device includes：Reflection beam splitting component,
One polarization spectro component, the second polarization spectro component, the first reflection subassembly, the second reflection subassembly and Polarization Modulation component；
The reflection beam splitting component is used to the projected light beam that binocular projector sends out being decomposed into the first projected light beam and second and throw
Shadow light beam；
The first polarization spectro component is set to the light path where first projected light beam, is used for first projected light
Beam is decomposed into the first transmitted light beam with the first polarization state and the first the reflected beams with the second polarization state, and described second partially
Spectrum groupware of shaking is set to the light path where second projected light beam, for being decomposed into second projected light beam with
Second transmitted light beam of one polarization state and the second the reflected beams with the second polarization state；
First reflection subassembly is used to adjust the direction of propagation of first transmitted light beam, makes the biography of first transmitted light beam
Directional steering projection screen is broadcast, second reflection subassembly is used to adjust the direction of propagation of second transmitted light beam, makes described
The direction of propagation of second transmitted light beam turns to projection screen；
The Polarization Modulation component is used to modulate first transmitted light beam, the first the reflected beams, the second transmission according to frame sequential
The polarization state of light beam and the second the reflected beams so that first transmitted light beam, the first the reflected beams, the second transmitted light beam and
The polarization state of two the reflected beams according to frame sequential between first polarization state and the second polarization state or preset third polarization
Switch between state and the 4th polarization state.
2. device as described in claim 1, which is characterized in that described device further includes the first polarization converted unit and second
Polarization converted unit；
The first polarization converted unit is set between first reflection subassembly and the Polarization Modulation component, and being used for will
The polarization state of first transmitted light beam from the first polarization converted be the second polarization state；
The second polarization converted unit is set between second reflection subassembly and the Polarization Modulation component, and being used for will
The polarization state of second transmitted light beam from the first polarization converted be the second polarization state.
3. device as described in claim 1, which is characterized in that described device further includes the first polarization converted unit and second
Polarization converted unit；
The first polarization converted unit is set between the first polarization spectro component and first reflection subassembly, is used
In by the polarization state of first transmitted light beam from the first polarization converted be the second polarization state；
The second polarization converted unit is set between the second polarization spectro component and second reflection subassembly, is used
In by the polarization state of second transmitted light beam from the first polarization converted be the second polarization state.
4. device as described in claim 1, which is characterized in that described device further includes the first polarization converted unit and second
Polarization converted unit；
The first polarization converted unit is set between the first polarization spectro component and the Polarization Modulation component, is used
In by the polarization state of first the reflected beams from the second polarization converted be the first polarization state；
The second polarization converted unit is set between the second polarization spectro component and the Polarization Modulation component, is used
In by the polarization state of second the reflected beams from the second polarization converted be the first polarization state.
5. the device as described in Claims 1-4 any one, which is characterized in that the Polarization Modulation component includes first inclined
Shake modulation component and the second Polarization Modulation component；
The first Polarization Modulation component is set in the light path where first transmitted light beam and first the reflected beams,
The second Polarization Modulation component is set in the light path where second transmitted light beam and second the reflected beams；
The first Polarization Modulation component be used for according to frame sequential modulate first transmitted light beam, the first the reflected beams polarization
State, the second Polarization Modulation component are used to modulate second transmitted light beam and the polarization of the second the reflected beams according to frame sequential
State so that first transmitted light beam, the first the reflected beams, the polarization state of the second transmitted light beam and the second the reflected beams are according to frame
Sequence is cut between first polarization state and the second polarization state or between preset third polarization state and the 4th polarization state simultaneously
It changes.
6. device as claimed in claim 5, which is characterized in that first polarization state and the second polarization state be linear polarization and
The polarization direction of the two is orthogonal, and the third polarization state and the 4th polarization state are the polarization of circular polarization or elliptical polarization and the two
Direction is orthogonal.
7. device as claimed in claim 5, which is characterized in that the reflection beam splitting component includes two surfaces coated with reflective
The substrate of coating, described two substrates, which are connected with each other, to be in the shape of the letter V, and the be connected protrusion direction for being formed by ridge and the projected light
The direction of propagation contrary of beam.
8. device as claimed in claim 5, which is characterized in that described device further includes shake component, and the shake component is used
Periodic jitter or aperiodicity shake are done in controlling the reflection beam splitting component；
Alternatively, the shake component does periodical tremble for controlling the first polarization spectro component and the second polarization spectro component
The shake of dynamic or aperiodicity；
Alternatively, the shake component is used to control first reflection subassembly and the second reflection subassembly does periodic jitter or non-week
Phase property is shaken.
9. a kind of four light path stereo projection systems, 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；
Four light path stereoprojection polarization modulating arrangements, the four light paths stereoprojection polarization modulating arrangement are claim 1 to 8 times
Four light path stereoprojection polarization modulating arrangements described in meaning one；
Projection screen, each throwing with identical polarization state for being modulated for the four light paths stereoprojection polarization modulating arrangement
Shadow light beam is imaged, and imaging is reflexed to the 3D glasses of user's wearing.
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