CN107167921A - Display - Google Patents
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- CN107167921A CN107167921A CN201710586187.1A CN201710586187A CN107167921A CN 107167921 A CN107167921 A CN 107167921A CN 201710586187 A CN201710586187 A CN 201710586187A CN 107167921 A CN107167921 A CN 107167921A
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- Prior art keywords
- light
- beam splitter
- polarisation
- polarization state
- display
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/017—Head mounted
- G02B27/0172—Head mounted characterised by optical features
Abstract
The disclosure provides a kind of display, is related to augmented reality field.The display includes：Object lens, the true picture for receiving outer scene；Micro-display, for generating virtual image；Beam splitter, for receiving true picture and virtual image and merging the two to produce combination image；First polarizer, between object lens and beam splitter, the light for controlling true picture is in the first polarization state before beam splitter is entered；Second polarizer, between micro-display and beam splitter, the light for controlling virtual image is in the second polarization state before beam splitter is entered；3rd polarizer, in the emergent light light path of beam splitter, including the first polarisation area and the second polarisation area, for controlling to correspond to the first polarisation area and the second polarisation area outgoing respectively from the light with different polarization states after beam splitter outgoing.The disclosure can make virtual image block true picture, so as to lift image syncretizing effect.
Description
Technical field
This disclosure relates to augmented reality field, more particularly to a kind of display.
Background technology
Virtual information can be applied in real world by AR (Augmented Reality, augmented reality) technology, so that
Virtual object and real environment can be added in same picture or the same space and while existing in real time.At present, AR
Technology has been applied to such as medical treatment and military training, engineering design and prototype, remote operation and long-range presentation and individual
The multiple fields such as entertainment systems.
By taking the perspective head-mounted display based on AR technologies as an example, its virtual image that display can be produced and real field
The true picture of scape is combined, and the desired effects of its fused images are as shown in figure 1, i.e. virtual car 101 can be carried on the back
Actual physical platform 102 afterwards is covered up, so as to provide a kind of syncretizing effect truly coordinated.But in the prior art, thoroughly
Syncretizing effect depending on the actual generation of head-mounted display is not as shown in Fig. 2 i.e. virtual car 101 shelters from the true of its behind
Physics scene, so not only have impact on the display effect of virtual image, also affects virtual image and incorporates actual physical scene
Syncretizing effect.
It should be noted that information is only used for strengthening the reason of background of this disclosure disclosed in above-mentioned background section
Solution, therefore can include not constituting the information to prior art known to persons of ordinary skill in the art.
The content of the invention
The purpose of the disclosure is to provide a kind of display, and then at least overcomes to a certain extent due to correlation technique
One or more problem caused by limitation and defect.
Other characteristics and advantage of the disclosure will be apparent from by following detailed description, or partially by the disclosure
Practice and acquistion.
According to an aspect of this disclosure there is provided a kind of display, including：
Object lens, the true picture for receiving outer scene；
Micro-display, for generating virtual image；
Beam splitter, for receiving the true picture and the virtual image, and by the true picture and described virtual
Image merges to produce combination image；
First polarizer, between the object lens and the beam splitter, the light for controlling the true picture
Line is in the first polarization state before the beam splitter is entered；
Second polarizer, between the micro-display and the beam splitter, the light for controlling the virtual image
Line is in the second polarization state before the beam splitter is entered；And,
3rd polarizer, in the emergent light light path of the beam splitter, the 3rd polarizer includes the first polarisation area
With the second polarisation area, for controlling to correspond to described first respectively from the light with different polarization states after the beam splitter outgoing
Polarisation area and the second polarisation area outgoing.
In a kind of exemplary embodiment of the disclosure, the first polarisation area is located at the center of the 3rd polarizer, institute
State the edge that the second polarisation area is located at the 3rd polarizer；
Wherein, the first polarisation area be used to controlling the light of the virtual image by and the true picture light
Block, the second polarisation area be used to controlling the light of the true picture by and the light of the virtual image block.
In a kind of exemplary embodiment of the disclosure, the light of the virtual image of the micro-display generation is collimation
Light, and the virtual representation that is presented with the micro-display of the first polarisation area is in the same size.
In a kind of exemplary embodiment of the disclosure, the true picture of the outer scene is after the object lens
The distance of image space to the beam splitter is equal with the distance of the micro-display to the beam splitter.
In a kind of exemplary embodiment of the disclosure, first polarizer is First Line polaroid, second polarisation
Device is the second line polarisation piece, and the 3rd polarizer is the 3rd line polarisation piece；
Wherein, the first polarisation area of the 3rd line polarisation piece and the between axlemolecules in the second polarisation area are mutually perpendicular to, and described
The between axlemolecules of one line polarisation piece and the between axlemolecules in the second polarisation area of the 3rd line polarisation piece are parallel to each other, and second line is inclined
The between axlemolecules of mating plate and the between axlemolecules in the first polarisation area of the 3rd line polarisation piece are parallel to each other.
In a kind of exemplary embodiment of the disclosure, the light of the true picture is in described from after the beam splitter outgoing
First polarization state, the light of the virtual image is in second polarization state from after the beam splitter outgoing.
In a kind of exemplary embodiment of the disclosure, first polarizer includes the wavelength phase of First Line polaroid and λ/4
Position delay piece, second polarizer includes the wavelength phases delay piece of the second line polarisation piece and λ/4, and the 3rd polarizer includes
The wavelength phases delay piece of 3rd line polarisation piece and λ/4；
Wherein, the first polarisation area of the 3rd line polarisation piece and the between axlemolecules in the second polarisation area it is identical and respectively with it is described
The optical axis of the wavelength phases of λ/4 delay piece is in the angle of the angle of π/4 and 3 π/4, between axlemolecules and λ/4 of the First Line polaroid
The wavelength phases of the optical axis of wavelength phases delay piece and between axlemolecules and the λ of the second line polarisation piece/4 postpone the optical axis of piece
In the angle of π/4 or in the angle of 3 π/4.
In a kind of exemplary embodiment of the disclosure, the light of the true picture is in the 3rd from after the beam splitter outgoing
Polarization state, the light of the virtual image is in second polarization state from after the beam splitter outgoing；
Wherein, first polarization state and second polarization state are left-hand polarization state, and the 3rd polarization state is the right side
Rotatory polarization state；
Or, first polarization state and second polarization state are dextropolarization state, and the 3rd polarization state is a left side
Rotatory polarization state.
In a kind of exemplary embodiment of the disclosure, the display also includes：
Ocular unit, between the 3rd polarizer and the exit pupil position of the display, for amplifying described group
Close image.
In a kind of exemplary embodiment of the disclosure, the display also includes：
First reflector, in the optical path of incident light of the object lens, the incidence for receiving the outer scene
Light is to reflex to the object lens；
Second reflector, between the object lens and the beam splitter, for receiving going out for the object lens
Light is penetrated to reflex to the beam splitter；
3rd reflector, in the emergent light light path of the ocular unit, the outgoing for receiving the ocular unit
Light is to reflex to the exit pupil position of the display.
The display that disclosure illustrative embodiments are provided, the light for causing true picture by the first polarizer has
There is the first polarization state, the light for causing virtual image by the second polarizer has the second polarization state, and the two is closed by beam splitter
And and produce after combination image, the light of light and virtual image from the true picture of beam splitter outgoing can show two kinds not
Same polarization state, and the polarised light of two kinds of different polarization states can only correspond to the different polarisation areas outgoing of the 3rd polarizer respectively,
I.e. each polarisation area can only correspond to a kind of light of image of outgoing.So, will not in the beam projecting region of virtual image
See true picture, and virtual image is not also can be appreciated that in the beam projecting region of true picture, its effect is equivalent to virtual graph
As having sheltered from the true picture of corresponding position, so as to can not only obtain good virtual image display effect, also simultaneously
A kind of real image syncretizing effect can be provided the user.
It should be appreciated that the general description of the above and detailed description hereinafter are only exemplary and explanatory, not
The disclosure can be limited.
Brief description of the drawings
Accompanying drawing herein is merged in specification and constitutes the part of this specification, shows the implementation for meeting the disclosure
Example, and be used to together with specification to explain the principle of the disclosure.It should be evident that drawings in the following description are only the disclosure
Some embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis
These accompanying drawings obtain other accompanying drawings.
Fig. 1 schematically shows the fused images design sketch that head-mounted display is expected to produce；
Fig. 2 schematically shows the fused images design sketch of the actual generation of head-mounted display；
Fig. 3 schematically shows the structure principle chart one of head-mounted display in the embodiment of the present disclosure；
Fig. 4 schematically shows the planar structure schematic diagram of the 3rd polarizer in the embodiment of the present disclosure；
Fig. 5 schematically shows the structure principle chart two of head-mounted display in the embodiment of the present disclosure；
Fig. 6 schematically shows the cross-sectional view of the first to the 3rd circular polariscope in the embodiment of the present disclosure.
Reference：
The virtual cars of 101-；102- actual physical platforms；301- object lens；302- micro-displays；303- beam splitters；
304- ocular units；The polarizers of 305- first；The polarizers of 306- second；The polarizers of 307- the 3rd；The reflectors of 308- first；309-
Second reflector；The reflectors of 310- the 3rd；The first polarisations of 401- area；The second polarisations of 402- area；501- line polarisation pieces；502-1/4
Wavelength phases postpone piece.
Embodiment
Example embodiment is described more fully with referring now to accompanying drawing.However, example embodiment can be real in a variety of forms
Apply, and be not understood as limited to example set forth herein；On the contrary, these embodiments are provided so that the disclosure will more comprehensively and
Completely, and by the design of example embodiment those skilled in the art is comprehensively conveyed to.Described feature, structure or characteristic
It can combine in any suitable manner in one or more embodiments.There is provided many details in the following description
So as to provide fully understanding for embodiment of this disclosure.It will be appreciated, however, by one skilled in the art that the disclosure can be put into practice
Technical scheme and omit one or more in the specific detail, or can using other methods, constituent element, device,
Step etc..In other cases, known solution is not shown in detail or describes to avoid making each side of the disclosure from becoming mould
Paste.
In addition, accompanying drawing is only the schematic illustrations of the disclosure, it is not necessarily drawn to scale.Identical accompanying drawing mark in figure
Note represents same or similar part, thus will omit repetition thereof.Some block diagrams shown in accompanying drawing are work(
Can entity, not necessarily must be corresponding with physically or logically independent entity.These work(can be realized using software form
Can entity, or realize in one or more hardware modules or integrated circuit these functional entitys, or at heterogeneous networks and/or place
These functional entitys are realized in reason device device and/or microcontroller device.
This example embodiment provides a kind of display, and the display can be optical perspective head-mounted display, be used for
Realize the fusion of virtual image and true picture.It will be readily appreciated, however, that in other exemplary embodiments of the disclosure, this shows
Show that device can also show as other forms, such as ear-hang form, the i.e. disclosure are not spy for the final form of expression of display
It is different to limit.As shown in figure 3, the optical perspective head-mounted display can include：
Object lens 301, the true picture for receiving outer scene；
Micro-display 302, for generating virtual image；
Beam splitter 303, for receiving true picture and virtual image and merging the two to produce combination image；
Ocular unit 304, for amplifying combination image；
First polarizer 305, between object lens 301 and beam splitter 303, for controlling the light of true picture to exist
It is in the first polarization state before into beam splitter 303；
Second polarizer 306, between micro-display 302 and beam splitter 303, for controlling the light of virtual image to exist
It is in the second polarization state before into beam splitter 303；
3rd polarizer 307, in the emergent light light path of beam splitter 303 such as beam splitter 303 and ocular unit 304 it
Between, as shown in figure 4, the 3rd polarizer 307 can include the first polarisation area 401 and the second polarisation area 402, for controlling to divide certainly
The light with different polarization states after the outgoing of beam device 303 corresponds to the first polarisation area 401 and the outgoing of the second polarisation area 402 respectively.
Wherein, the light propagation path of the true picture of the outer scene is via object lens 301, the first polarizer
305th, beam splitter 303, the 3rd polarizer 307 and ocular unit 304 and the exit pupil position for reaching the head-mounted display；Institute
The light propagation path for stating virtual image is via the second polarizer 306, beam splitter 303, the 3rd polarizer 307 and eyepiece
Unit 304 and the exit pupil position for reaching the head-mounted display.
It should be noted that：The light of the light of the true picture and the virtual image enter beam splitter 303 it
Preceding is in the first polarization state and the second polarization state respectively, and two polarization states can be identical polarization state or be different polarizations
State, this example embodiment is not construed as limiting to this, only need to ensure the light of the true picture and the light of the virtual image
There is different polarization states from after the outgoing of beam splitter 303.
The optical perspective head-mounted display that disclosure illustrative embodiments are provided, is caused by the first polarizer 305
The light of true picture has the first polarization state, causes the light of virtual image to have the second polarization by the second polarizer 306
State, the two merge by beam splitter 303 and after producing combination image, from the light of the true picture of the outgoing of beam splitter 303 with it is empty
Two kinds of different polarization states can be showed by intending the light of image, and the polarised light of two kinds of different polarization states can only correspond to the respectively
The different polarisation areas outgoing of three polarizers 307, i.e., each polarisation area can only correspond to a kind of light of image of outgoing.So,
True picture is not can be appreciated that in the beam projecting region of virtual image, and also not can be appreciated that in the beam projecting region of true picture
Virtual image, its effect has sheltered from the true picture of corresponding position equivalent to virtual image, so as to can not only obtain good
Good virtual image display effect, while can also provide the user a kind of real image syncretizing effect.
Based on foregoing description, in order to ensure virtual image blocks the effect of true picture, the first polarisation area 401 can be located at
The center of 3rd polarizer 307, the second polarisation area 402 is located at the edge of the 3rd polarizer 307；Wherein, the first polarisation area 401
Can be used for controlling the light of virtual image by and the light of true picture block, the second polarisation area 402 can be used for control
The light of true picture by and the light of virtual image block.
So, the image of the correspondence position outgoing of the first polarisation area 401 is virtual image, the second polarisation area of correspondence
The image of 402 outgoing is true picture, then its syncretizing effect is the true picture that virtual image has sheltered from its behind, example
Virtual car 101 as shown in Figure 1 has sheltered from the actual physical platform 102 of its behind.
The light of the virtual image generated in view of the ratio after image co-registration, the micro-display 302 can be collimation
Light, and the first polarisation area 401 can be in the same size with the virtual representation of the presentation of micro-display 302.Wherein, the micro-display 302
Can be using collimated light source as backlight liquid crystal display or be can launch collimated light Organic Light Emitting Diode show
Show device or be that can launch plasma scope PDP of collimated light etc..The present embodiment is specific for micro-display 302
Type is not limited.
It is preferred that, in order to ensure that the virtual image that the true picture of outer scene is generated with micro-display 302 can be simultaneously
Into beam splitter 303 to realize the fusion of image, can make the true picture of outer scene after object lens 301 into image position
The distance for putting beam splitter 303 is equal with the distance of micro-display 302 to beam splitter 303.
In this example embodiment, the light propagation path of the true picture and the light of the virtual image are passed
Broadcasting path can be controlled by the light path control module being made up of multiple reflection devices.Specifically, with reference to shown in Fig. 3,
The light path control module can include：
First reflector 308, in the optical path of incident light of object lens 301 for example outer scene entrance this wear display
Between the entrance pupil position of device and object lens 301, for receiving the incident light of outer scene to reflex to object lens 301；
Second reflector 309, between object lens 301 and beam splitter 303, for receiving going out for object lens 301
Light is penetrated to reflex to beam splitter 303；
3rd reflector 310, in the emergent light light path of ocular unit 304 such as ocular unit 304 with this wear it is aobvious
Show between the exit pupil position of device, for receiving the emergent light of ocular unit 304 to reflex to the exit pupil position of head-mounted display i.e.
Viewing location residing for human eye.
Wherein, the described first to the 3rd reflector for example can be plane mirror, and it sets angle can be with being incident to
Light on reflecting surface is in the angle of π/4, so as to which the direction of propagation of incident ray is changed into pi/2.
It should be noted that：The light path control module can comprise more than three above-mentioned reflectors, and this three reflections
The setting angle of device is also not necessarily limited to this.In the present embodiment, as long as can be propagated using the light of reflector formation true picture
Path and the light propagation path of virtual image, particular number and setting angle as reflector do not do special limit
It is fixed.But it is noted that because the realization of disclosed technique scheme is the light based on different polarization states from the 3rd polarizer 307
The outgoing of different polarisation areas, therefore no matter how the reflector is set, and all should be incident to the 3rd polarizer 307 not change
On the basis of the polarization state of two kinds of polarised lights.
The operation principle of the optical perspective head-mounted display is carried out with two specific embodiments below in conjunction with the accompanying drawings
Explanation.
In embodiment one, as shown in figure 3, the first polarizer 305, the second polarizer 306 and the 3rd polarizer 307
Respectively first to the 3rd line polarisation piece, and the first polarisation area 401 and the between axlemolecules in the second polarisation area 402 of the 3rd line polarisation piece
It is mutually perpendicular to；Wherein, the between axlemolecules of First Line polaroid and the between axlemolecules in the second polarisation area 402 of the 3rd line polarisation piece are mutually put down
OK, the between axlemolecules of the second line polarisation piece and the between axlemolecules in the first polarisation area 401 of the 3rd line polarisation piece are parallel to each other.
Based on this, the light for coming from the true picture of outer scene initially enters the head-mounted display, and passes through first
By object lens 301 after the reflection of reflector 308, reflected from the light of the outgoing of object lens 301 by the second reflector 309
After image between First Line polaroid and beam splitter 303, and because the light have passed through First Line polaroid, therefore come from
The natural light of outer scene can be changed into the first linearly polarized light with the first polarization state, and its polarization direction for example can be perpendicular to
Paper direction；At the same time, the light for coming from the virtual image of micro-display 302 is changed into tool by the second line polarisation sector-meeting
There is the second linearly polarized light of the second polarization state, its polarization direction for example can parallel to paper and in horizontal direction；So,
The light of true picture and the light of virtual image will turn into polarization direction orthogonal two before beam splitter 303 is entered
Bunch polarised light.
On this basis, due to outer scene true picture image space to beam splitter 303 distance and micro display
The distance of device 302 to beam splitter 303 is equal, therefore true picture can be entered inside beam splitter 303 simultaneously with virtual image
To carry out the fusion of image, and do not changed by the polarization state of two bunch polarised lights of beam splitter 303, i.e. true picture
Light be still in the first polarization state from after the outgoing of beam splitter 303, the light of virtual image is from after the outgoing of beam splitter 303 also still in the
Two polarization states, combination image produced by it subregion when by three polarizers 307 passes through, i.e. the polarised light pair of virtual image
The outgoing of the first polarisation area 401 is answered, thus the polarised light correspondence outgoing of the second polarisation area 402 of true picture just can make the first polarisation
The light of the only outgoing virtual image of area 401, and the light of the second polarisation area 402 only outgoing true picture, so as to reach virtual graph
Effect as blocking its behind true picture.
Further, combination image can be realized when by ocular unit 304 by the combination image of virtual reality fusion
Amplification, the enlarged drawing will enter human eye after the reflection of the 3rd reflector 310, and combination image is presented into user.
In embodiment two, as shown in Figure 5 and Figure 6, the first polarizer 305, the second polarizer 306 and the 3rd polarisation
Device 307 is respectively the first to the 3rd circular polariscope, i.e., postponing piece 502 by the wavelength phases of line polarisation piece 501 and λ/4 respectively constitutes,
First polarisation area 401 of the 3rd line polarisation piece and the between axlemolecules in the second polarisation area 402 are identical and postpone respectively with the wavelength phases of λ/4
The optical axis of piece 502 is in the angle of the angle of π/4 and 3 π/4；Wherein, the wavelength phases delay piece of the between axlemolecules of First Line polaroid and λ/4
The optical axis of the wavelength phases delay piece 502 of the between axlemolecules of 502 optical axis and the second line polarisation piece and λ/4 in the angle of π/4 or
In the angle of 3 π/4.
Based on this, the light for coming from the true picture of outer scene initially enters the head-mounted display, and passes through first
By object lens 301 after the reflection of reflector 308, reflected from the light of the outgoing of object lens 301 by the second reflector 309
After image between the first circular polariscope and beam splitter 303, and because the light have passed through the first circular polariscope, therefore come from
The natural light of outer scene can be changed into such as left-hand polarization light of the first circularly polarized light with the first polarization state；At the same time,
Second with the second polarization state can be changed into by the second circular polariscope by coming from the light of the virtual image of micro-display 302
Circularly polarized light such as left-hand polarization light；So, the light of true picture and the light of virtual image are entering beam splitter 303
The beam circularly polarized light of polarization direction identical two will be turned into before.
On this basis, due to outer scene true picture image space to beam splitter 303 distance and micro display
The distance of device 302 to beam splitter 303 is equal, therefore true picture can be entered inside beam splitter 303 simultaneously with virtual image
To carry out the fusion of image, and from the polarization state of the first circularly polarized light after the outgoing of beam splitter 303 can change for example as
Right-handed polarized light with the 3rd polarization state, it is for example still inclined with second that the polarization state of the second circularly polarized light, which does not change,
The left-hand polarization light of polarization state, combination image produced by it subregion when by three polarizers 307 passes through, i.e. virtual image
The polarised light correspondence outgoing of the first polarisation area 401, the polarised light correspondence outgoing of the second polarisation area 402 of true picture, thus just can make
The light of first polarisation area 401 only outgoing virtual image, and the light of the second polarisation area 402 only outgoing true picture, so as to reach
The effect of its behind true picture is blocked to virtual image.
Further, combination image can be realized when by ocular unit 304 by the combination image of virtual reality fusion
Amplification, the enlarged drawing will enter human eye after the reflection of the 3rd reflector 310, and combination image is presented into user.
It should be noted that：The present embodiment is using the first polarization state and the second polarization state as left-hand polarization state, the 3rd polarization
State is to illustrate exemplified by dextropolarization state, but can also be actually the first polarization state and the second polarization state is dextropolarization
State, the 3rd polarization state are left-hand polarization state.
In addition, when forming circularly polarized light, between the optical axis of the wavelength phases delay piece of the between axlemolecules and λ of line polarisation piece/4
Relation is also not necessarily limited to above-mentioned situation, if can make the light of true picture and the light of virtual image incident beamsplitter 303 it
It is preceding that there is identical polarization state, and can make to pass through from the two-beam line subregion with different polarization states of the outgoing of beam splitter 303
, it is other to be not specifically limited.
Those skilled in the art will readily occur to its of the disclosure after considering specification and putting into practice invention disclosed herein
Its embodiment.The application is intended to any modification, purposes or the adaptations of the disclosure, these modifications, purposes or
Person's adaptations follow the general principle of the disclosure and including the undocumented common knowledge in the art of the disclosure
Or conventional techniques.Description and embodiments are considered only as exemplary, and the true scope of the disclosure and spirit are by appended
Claim is pointed out.
It should be appreciated that the precision architecture that the disclosure is not limited to be described above and is shown in the drawings, and
And various modifications and changes can be being carried out without departing from the scope.The scope of the present disclosure is only limited by appended claim.
Claims (10)
1. a kind of display, it is characterised in that including：
Object lens, the true picture for receiving outer scene；
Micro-display, for generating virtual image；
Beam splitter, for receiving the true picture and the virtual image, and by the true picture and the virtual image
Merge to produce combination image；
First polarizer, between the object lens and the beam splitter, for controlling the light of the true picture to exist
It is in the first polarization state before into the beam splitter；
Second polarizer, between the micro-display and the beam splitter, for controlling the light of the virtual image to exist
It is in the second polarization state before into the beam splitter；And,
3rd polarizer, in the emergent light light path of the beam splitter, the 3rd polarizer includes the first polarisation area and the
Two polarisation areas, for controlling to correspond to first polarisation respectively from the light with different polarization states after the beam splitter outgoing
Area and the second polarisation area outgoing.
2. display according to claim 1, it is characterised in that the first polarisation area is located at the 3rd polarizer
Center, the second polarisation area is located at the edge of the 3rd polarizer；
Wherein, the first polarisation area be used to controlling the light of the virtual image by and the light of the true picture cut
It is disconnected, the second polarisation area be used to controlling the light of the true picture by and the light of the virtual image block.
3. display according to claim 2, it is characterised in that the light of the virtual image of the micro-display generation
For collimated light, and the virtual representation that is presented with the micro-display of the first polarisation area is in the same size.
4. display according to claim 1, it is characterised in that the true picture of the outer scene passes through the object lens
The distance of image space to the beam splitter after unit is equal with the distance of the micro-display to the beam splitter.
5. display according to claim 1, it is characterised in that first polarizer is First Line polaroid, described
Second polarizer is the second line polarisation piece, and the 3rd polarizer is the 3rd line polarisation piece；
Wherein, the first polarisation area of the 3rd line polarisation piece and the between axlemolecules in the second polarisation area are mutually perpendicular to, the First Line
The between axlemolecules of polaroid and the between axlemolecules in the second polarisation area of the 3rd line polarisation piece are parallel to each other, the second line polarisation piece
Between axlemolecules and the between axlemolecules in the first polarisation area of the 3rd line polarisation piece be parallel to each other.
6. display according to claim 5, it is characterised in that the light of the true picture is from the beam splitter outgoing
It is in first polarization state afterwards, the light of the virtual image is in second polarization state from after the beam splitter outgoing.
7. display according to claim 1, it is characterised in that first polarizer include First Line polaroid and λ/
4 wavelength phases postpone piece, and second polarizer includes the wavelength phases delay piece of the second line polarisation piece and λ/4, and the described 3rd is inclined
Light device includes the wavelength phases delay piece of the 3rd line polarisation piece and λ/4；
Wherein, the first polarisation area of the 3rd line polarisation piece and the between axlemolecules in the second polarisation area it is identical and respectively with λ/4
The optical axis of wavelength phases delay piece is in the angle of the angle of π/4 and 3 π/4, the wavelength of the between axlemolecules of the First Line polaroid and the λ/4
The optical axis of the wavelength phases delay piece of the between axlemolecules of the optical axis of phase delay chip and the second line polarisation piece and the λ/4 is in
The angle of π/4 or in the angle of 3 π/4.
8. display according to claim 7, it is characterised in that the light of the true picture is from the beam splitter outgoing
It is in the 3rd polarization state afterwards, the light of the virtual image is in second polarization state from after the beam splitter outgoing；
Wherein, first polarization state and second polarization state are left-hand polarization state, and the 3rd polarization state is that dextrorotation is inclined
Polarization state；
Or, first polarization state and second polarization state are dextropolarization state, and the 3rd polarization state is left-handed inclined
Polarization state.
9. display according to claim 1, it is characterised in that the display also includes：
Ocular unit, between the 3rd polarizer and the exit pupil position of the display, for amplifying the constitutional diagram
Picture.
10. display according to claim 9, it is characterised in that the display also includes：
First reflector, in the optical path of incident light of the object lens, for receive the incident light of the outer scene with
Reflex to the object lens；
Second reflector, between the object lens and the beam splitter, the emergent light for receiving the object lens
To reflex to the beam splitter；
3rd reflector, in the emergent light light path of the ocular unit, for receive the emergent light of the ocular unit with
Reflex to the exit pupil position of the display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710586187.1A CN107167921B (en) | 2017-07-18 | 2017-07-18 | Display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710586187.1A CN107167921B (en) | 2017-07-18 | 2017-07-18 | Display device |
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| CN111580280A (en) * | 2020-06-16 | 2020-08-25 | 京东方科技集团股份有限公司 | See-through head mounted display |
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| CN111580280B (en) * | 2020-06-16 | 2022-10-28 | 京东方科技集团股份有限公司 | See-through head mounted display |
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| CN107167921B (en) | 2020-01-21 |
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