CN108398792A - Augmented reality shows optics module and system - Google Patents
Augmented reality shows optics module and system Download PDFInfo
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- CN108398792A CN108398792A CN201810358432.8A CN201810358432A CN108398792A CN 108398792 A CN108398792 A CN 108398792A CN 201810358432 A CN201810358432 A CN 201810358432A CN 108398792 A CN108398792 A CN 108398792A
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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
- G02B27/0101—Head-up displays characterised by optical features
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Abstract
A kind of augmented reality of present invention offer shows optics module and system.The augmented reality display system includes that augmented reality shows optics module and image display device.The augmented reality shows that optics module includes electrically-controlled liquid crystal polarizer, polarization beam splitter, the first reflection amplifier element, phase delay chip, the first reflecting element, the second reflecting element, third reflecting element and the second reflection amplifier element.Image display device is sequentially output the first beam subgraph light and the second beam subgraph light of an image to be displayed, is assembled the first subgraph to be shown formed and the second subgraph to be shown by the first reflection amplifier element and the second reflection amplifier element reflection and can be visually spliced into image to be displayed in user.The augmented reality shows optics module and system has the characteristics that big visual field, high-resolution, and smaller relative to the augmented reality display optics module and system bulk for showing optics module with tradition.
Description
Technical field
The present invention relates to augmented reality fields, show optics module in particular to a kind of augmented reality and are
System.
Background technology
Augmented reality (AR, Augmented Reality) is to carry out reality to real scene using dummy object or information
The technology of enhancing is widely used in each field such as scientific research, military affairs, industry, game, video, education.The augmented reality of mainstream at present
Display system generally uses miniature image display as image source, and tradition is coordinated to show optics module (half-reflection and half-transmission plane
Mirror and traditional visual system) realize enhancing display.It is limited to existing technology and technological level, miniature image display
Resolution ratio is difficult to improve.Also, tradition shows that the display visual field of optics module and the volume of display optics module are closely related.Increase
Big display visual field, tradition show that the volume of optics module can increase severely therewith.Therefore, the augmented reality display system of mainstream has at present
Have that resolution ratio is low and visual field is small or bulky problem.
Invention content
In view of this, the purpose of the present invention is to provide a kind of augmented realities of the compact of large visual field high resolution to show
Optics module and system, to solve the above problems.
To achieve the above object, the present invention provides the following technical solutions：
Present pre-ferred embodiments provide a kind of augmented reality and show optics module, including electrically-controlled liquid crystal polarizer, partially
Shake beam splitter, the first reflection amplifier element, phase delay chip, the first reflecting element, the second reflecting element, third reflecting element
With the second reflection amplifier element；
Image display device is sequentially output the first beam subgraph light and the second beam subgraph light of image to be displayed,
In, the first beam subgraph light and the second beam subgraph light are the collimation collimated light beam with the first linear polarization direction, often
Width image to be displayed includes the first subgraph to be shown and the second subgraph to be shown, the first beam subgraph light and first
Subgraph to be shown corresponds to, and the second beam subgraph light is corresponding with the second subgraph to be shown；
The electrically-controlled liquid crystal polarizer is set on the emitting light path of image display device, for applying control voltage
Afterwards, incident the second beam subgraph light of the first linear polarization direction or the polarization direction of the first beam subgraph light are changed to
Second linear polarization direction, second linear polarization direction and the first linear polarization direction are orthogonal；
The polarization beam splitter is set on the emitting light path of the electrically-controlled liquid crystal polarizer, for linear to first
The subgraph light of polarization direction transmit and reflect the subgraph light of the second linear polarization direction；
The first reflection amplifier element is set on the first emitting light path of the polarization beam splitter, is Polarization-Sensitive
Type reflects convergent component, for the first beam subgraph light to the first linear polarization direction through the polarization beam splitter
Or second beam subgraph light carry out reflection convergence, to form the first subgraph to be shown or the second subgraph to be shown in human eye
Picture；
The phase delay chip is set between the second emitting light path of the polarization beam splitter and the first reflecting element,
It is ellipse for being converted to the polarization direction of the subgraph light of the second linear polarization direction reflected by the polarization beam splitter
Circular polarization or circular polarization, and will be from the reflected elliptical polarization direction of the first reflecting element or circular polarization
Subgraph light be converted to non-second linear polarization direction；
Second reflecting element and third reflecting element are set in turn in the third emergent light of the polarization beam splitter
On the road, second reflection is reflexed to for will transmit through the first linear polarization direction subgraph light of the polarization beam splitter
Amplifier element；
The second reflection amplifier element is set on the emitting light path of the third reflecting element, is that polarization sensitive is anti-
Penetrate convergent component, for being reflected by the third reflecting element the second beam subgraph light of the first linear polarization direction or
First beam subgraph light carries out reflection convergence, to form the second subgraph to be shown or the first subgraph to be shown in human eye；
Described image display device has exported the first beam subgraph light and the second beam subgraph light of image to be displayed
Afterwards, the described first subgraph to be shown and the second subgraph to be shown formed in human eye can visually be spliced into institute in user
State image to be displayed；
Real world light passes through the augmented reality to show that optics module enters human eye and forms ambient image.
Optionally, first reflecting element, the second reflecting element and third reflecting element are flat reflective element.
Optionally, first reflecting element and third reflecting element are flat reflective element, second reflecting element
For concave reflective element.
Optionally, first reflecting element and third reflecting element are concave reflective element, second reflecting element
For flat reflective element.
Optionally, first reflecting element is flat reflective element, second reflecting element and third reflecting element
For concave reflective element.
Optionally, the first reflection amplifier element and the second reflection amplifier element are plane reflection diffraction element.
Optionally, the first reflection amplifier element and the second reflection amplifier element are concave reflection convergent component.
Optionally, the augmented reality shows that optics module further includes polarization conversion device；
The polarization conversion device is set between the polarization beam splitter and the second reflecting element, or is set to described
Between second reflecting element and third reflecting element, or be set to the third reflecting element and second reflection amplifier element it
Between, or be set between polarization beam splitter and the first reflection amplifier element.
Optionally, the phase delay chip is 1/4 slide.
Another preferred embodiment of the present invention also provides a kind of augmented reality display system, including image display device and above-mentioned
Augmented reality show optics module.
Augmented reality provided in an embodiment of the present invention shows that optics module and system pass through to electrically-controlled liquid crystal polarizer, the
The ingenious integrated and design of one reflection amplifier element, the second reflection amplifier element, phase delay chip and reflecting element, passes sequentially through
First reflection amplifier element forms the first subgraph to be shown in human eye and the second reflection amplifier element forms second in human eye and waits for
Display subgraph makes the first subgraph to be shown and the second subgraph to be shown that are formed in human eye using persistence of vision effect
It is visually spliced into the image to be displayed in user.Therefore, which shows the field angle of optics module and system
Equal to the sum of the field angle of the first reflection amplifier element and the second reflection amplifier element.Also, the first subgraph to be shown and
The resolution ratio of two subgraphs to be shown can identical and equal to image to be displayed resolution ratio.Therefore the augmented reality shows optics
With high-resolution while module and system are shown with big view field image, and optics module is shown relative to tradition
Augmented reality shows that optics module and system bulk are smaller.Meanwhile the augmented reality shows that optics module and system are based on reflection
The imaging method of image-forming principle makes the image no color differnece after reflection convergence, and the amplification based on light pencil is imaged so that after amplification
Image center and peripheral have consistent clarity.
Description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described.It should be appreciated that the following drawings illustrates only certain embodiments of the present invention, therefore it is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is a kind of structural schematic diagram of augmented reality display system provided in an embodiment of the present invention.
Fig. 2 is a kind of light path schematic diagram that augmented reality display system shown in FIG. 1 shows image to be displayed.
Fig. 3 is another light path schematic diagram that augmented reality display system shown in FIG. 1 shows image to be displayed.
Fig. 4 is the first subgraph to be shown and the second subgraph to be shown that augmented reality display system shown in FIG. 1 is formed
As being visually spliced into image to be displayed schematic diagram in user.
Fig. 5 is the structural schematic diagram of augmented reality display system in another embodiment.
Fig. 6 is the structural schematic diagram of augmented reality display system in another embodiment.
Fig. 7 is the structural schematic diagram of augmented reality display system in another embodiment.
Fig. 8 is the structural schematic diagram of augmented reality display system in another embodiment.
Fig. 9 is the structural schematic diagram of augmented reality display system in another embodiment.
Icon:1- augmented reality display systems；10- augmented realities show optics module；50- image display devices；11- electricity
Draining crystalline substance polarizer；13- polarization beam splitters；15- first reflects amplifier element；17- phase delay chips；19- first reflects
Element；The second reflecting elements of 21-；23- third reflecting elements；25- second reflects amplifier element；29- polarization conversion devices.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes.Obviously, described embodiment is only a part of the embodiment of the present invention, instead of all the embodiments.It is logical
The component for the embodiment of the present invention being often described and illustrated herein in the accompanying drawings can be arranged and be designed with a variety of different configurations.
Therefore, below the detailed description of the embodiment of the present invention to providing in the accompanying drawings be not intended to limit it is claimed
The scope of the present invention, but be merely representative of the present invention selected embodiment.Based on the embodiment of the present invention, people in the art
The every other embodiment that member is obtained without making creative work, shall fall within the protection scope of the present invention.
It should be noted that：Similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined, then it further need not be defined and explained in subsequent attached drawing in a attached drawing.In description of the invention
In, term " first ", " second ", " third ", " the 4th " etc. are only used for distinguishing description, and should not be understood as only or imply opposite
Importance.
Referring to FIG. 1, Fig. 1 is a kind of structural schematic diagram of augmented reality display system 1 provided in an embodiment of the present invention.It should
Augmented reality display system 1 can be applied to HMD (Head Mount Display, wear-type visual device), intelligent glasses etc.
Augmented reality equipment, is not limited herein.The augmented reality display system 1 includes that augmented reality shows optics module 10 and image
Display device 50.The augmented reality shows that optics module 10 includes electrically-controlled liquid crystal polarizer 11, polarization beam splitter 13, first
Reflect amplifier element 15, phase delay chip 17, the first reflecting element 19, the second reflecting element 21, third reflecting element 23 and the
Two reflection amplifier elements 25.
When carrying out enhancing display, augmented reality shows that optics module 10 needs to coordinate with image display device 50, constitutes
Augmented reality display system 1.Image display device 50 is used to be sequentially output the first beam subgraph light and the of image to be displayed
Two beam subgraph light, and the first beam subgraph light and the second beam subgraph light are the standard with the first linear polarization direction
Straight collimated light beam.Wherein, image to be displayed is the virtual image that augmented reality display system 1 is shown, i.e., to real world
Artificial additional information virtual display.Every width image to be displayed includes the first subgraph to be shown and the second subgraph to be shown
Picture.In order to improve display effect, the resolution ratio of the first subgraph to be shown and the second subgraph to be shown can be identical.And first
The size of subgraph to be shown and the second subgraph to be shown can be the same or different.The first beam subgraph light with
First subgraph to be shown corresponds to, i.e., described image display device 50 is according to the described first subgraph output described first to be shown
Beam subgraph light.The second beam subgraph light is corresponding with the second subgraph to be shown, i.e. described image display device 50
The second beam subgraph light is exported according to the described second subgraph to be shown.In actual implementation, the image display device
50 can show that source and the lighting source component that can export collimation parallel light are common by transmission-type or reflective LOCS
Composition, can also be and collectively constituted by optical fiber scanning imaging system and colimated light system.In the present embodiment, the image display device 50
It is to show source by transmission-type LOCS to collectively constitute with the lighting source component that can export collimation parallel light.
Electrically-controlled liquid crystal polarizer 11 is set on the emitting light path of image display device 50.Electrically-controlled liquid crystal polarizer 11
For after applying and controlling voltage, to the phase of incident light beam (the first beam subgraph light or the second beam subgraph light)
Position is changed, and the polarization direction of the first beam subgraph light or the second beam subgraph light is changed to the second linear polarization side
To.When electrically-controlled liquid crystal polarizer 11 apply control voltage after, when to the phase change π phases of incident light beam, institute
It states electrically-controlled liquid crystal polarizer 11 and is equivalent to 1/2 slide, then the first linear polarization direction and the second linear polarization direction are orthogonal.
That is the first beam subgraph light and the second beam subgraph light are the collimation directional light with the first linear polarization direction
The son of beam, the first beam subgraph light or the second beam subgraph light after electrically-controlled liquid crystal polarizer 11 carries out phase change
Image light is the collimation collimated light beam with the second linear polarization direction.Wherein, the first linear polarization direction and second linear
Polarization direction is orthogonal.
The polarization beam splitter 13 is set on the emitting light path of the electrically-controlled liquid crystal polarizer 11, for first
The subgraph light of linear polarization direction transmit and reflect the subgraph light of the second linear polarization direction.
The first reflection amplifier element 15 is set on the first emitting light path of the polarization beam splitter 13, for polarization
Responsive type reflects convergent component.The first reflection amplifier element 15 is used for the First Line through the polarization beam splitter 13
The subgraph light of property polarization direction carries out reflection convergence, to form subgraph to be shown in human eye.
The phase delay chip 17 is set to the second emitting light path and the first reflecting element of the polarization beam splitter 13
Between 19.The phase delay chip 17 is used for the subgraph of the second linear polarization direction reflected by the polarization beam splitter 13
As the polarization direction of light is converted to elliptical polarization direction or circular polarization, and will be reflected from the first reflecting element 19
Elliptical polarization direction or the subgraph light of circular polarization be converted to non-second linear polarization direction.Wherein, non-second line
Property polarization direction include the first linear polarization direction.When phase delay chip 17 is 1/4 slide, phase delay chip 17 is used for the
The polarization direction of the subgraph light of bilinear polarization direction is converted to circular polarization, and will be reflected from reflecting element 15
The subgraph light of circular polarization be completely converted into the first linear polarization direction.
First reflecting element 19 is used to have elliptical polarization direction or circular polarization by what is transmitted from phase delay chip 17
The subgraph light in direction returns to transmission towards the direction of phase delay chip 17.
Second reflecting element 21 is set to the third emitting light path of the polarization beam splitter 13, for will transmit through
The the first linear polarization direction subgraph light for stating polarization beam splitter 13 reflexes to the third reflecting element 23.
The third reflecting element 23 is set on the emitting light path of second reflecting element 21, for by described the
The subgraph light of first linear polarization direction of two reflecting elements 21 reflection carries out reflexing to the second reflection amplifier element
25。
Optionally, in the present embodiment, the first reflecting element 19, the second reflecting element 21 and third reflecting element 23 are plane
Reflecting element only has the function of that light path is transferred, to the size of the subgraph light transmitted from polarization beam splitter 13 without amplification
Or reduction capability.
The second reflection amplifier element 25 is set on the emitting light path of the third reflecting element 23, is Polarization-Sensitive
Type reflects convergent component.The second reflection amplifier element 25 is linear for first to being reflected by the third reflecting element 23
The subgraph light of polarization direction carries out reflection convergence, to form subgraph to be shown in human eye.
Optionally, in the present embodiment, it is plane that the first reflection amplifier element 15 and second, which reflects amplifier element 25,
Reflection diffraction element.
When electrically-controlled liquid crystal polarizer 11 is used for after applying control voltage, to the phase of the second incident beam subgraph light
When position is changed, the process that the virtual image of progress of augmented reality display system 1 of present embodiment offer is shown is as follows：
One width image to be displayed is divided into two subgraphs to be shown in the horizontal direction, is denoted as the first subgraph to be shown and second respectively
Subgraph to be shown.As shown in Fig. 2, image display device 50 exports the first beam subgraph light according to the first subgraph to be shown
Line, the first beam subgraph light are the collimation collimated light beam with the first linear polarization direction.To electrically-controlled liquid crystal polarizer 11
Control voltage is not applied, the first beam subgraph light with the first linear polarization direction is through after the polarization beam splitter 13
It is assembled by the first reflection reflection of amplifier element 15, to form the first subgraph to be shown in human eye.50 basis of image display device
Second subgraph to be shown exports the second beam subgraph light, and the second beam subgraph light is with the first linear polarization direction
Collimate collimated light beam.Control voltage, the second beam with the first linear polarization direction are applied to electrically-controlled liquid crystal polarizer 11
Image light is converted to the second beam subgraph light with the second linear polarization direction by electrically-controlled liquid crystal polarizer 11.Have
Second beam subgraph light of the second linear polarization direction reflexes to phase delay chip 17 by the polarization beam splitter 13.It reaches
The polarization direction of the second beam subgraph light with the second linear polarization direction of phase delay chip 17 is by phase delay chip 17
Continue to transmit to the first reflecting element 19 after being converted to elliptical polarization direction or circular polarization, it is reversed by the first reflecting element 19
After be re-transmitted to phase delay chip 17.From 19 reflected elliptical polarization direction of the first reflecting element or circular polarization
Second beam subgraph light is converted to the second beam subgraph light of non-second linear polarization direction by phase delay chip 17.Non-
Second beam subgraph light of the first linear polarization direction in the second beam subgraph light of bilinear polarization direction penetrates institute
After stating polarization beam splitter 13, second reflection is reflexed to by the second reflecting element 21 and third reflecting element 23 successively amplifies
Element 25 reflects the reflection of amplifier element 25 by described second and assembles, to form the second subgraph to be shown in human eye.
When electrically-controlled liquid crystal polarizer 11 is used for after applying control voltage, to the phase of the first incident beam subgraph light
When position is changed, the process that the virtual image of progress of augmented reality display system 1 of present embodiment offer is shown is as follows：
One width image to be displayed is divided into two subgraphs to be shown in the horizontal direction, is denoted as the first subgraph to be shown and second respectively
Subgraph to be shown.As shown in figure 3, image display device 50 exports the first beam subgraph light according to the first subgraph to be shown
Line, the first beam subgraph light are the collimation collimated light beam with the first linear polarization direction.To electrically-controlled liquid crystal polarizer 11
Apply control voltage, the first beam subgraph light with the first linear polarization direction is converted to by electrically-controlled liquid crystal polarizer 11
The first beam subgraph light with the second linear polarization direction.The first beam subgraph light with the second linear polarization direction
Phase delay chip 17 is reflexed to by the polarization beam splitter 13.Reach phase delay chip 17 has the second linear polarization direction
The polarization direction of the first beam subgraph light elliptical polarization direction is converted to by phase delay chip 17 or circular polarization is subsequent
Continue and transmitted to the first reflecting element 19, by the first reflecting element 19 it is reversed after be re-transmitted to phase delay chip 17.It is anti-from first
The first beam subgraph light of 19 reflected elliptical polarization direction of element or circular polarization is penetrated by 17 turns of phase delay chip
It is changed to the first beam subgraph light of non-second linear polarization direction.First beam subgraph light of non-second linear polarization direction
In the first linear polarization direction the first beam subgraph light through after the polarization beam splitter 13, successively by the second reflection
Element 21 and third reflecting element 23 reflex to the second reflection amplifier element 25, and it is anti-to reflect amplifier element 25 by described second
Convergence is penetrated, to form the first subgraph to be shown in human eye.Image display device 50 is according to the second subgraph to be shown output the
Two beam subgraph light, the second beam subgraph light are the collimation collimated light beam with the first linear polarization direction.To automatically controlled liquid
Brilliant polarizer 11 does not apply control voltage, and the second beam subgraph light with the first linear polarization direction penetrates the polarization
It is assembled by the first reflection reflection of amplifier element 15 after beam splitter 13, to form the second subgraph to be shown in human eye.
In above process, it is view to form the process of the first subgraph to be shown and the second subgraph to be shown in human eye
Film is imaged, therefore can be with blur-free imaging in entirely display field range.It can be exported by adjusting described image display device 50
The time interval of frequency and the every width image to be displayed of output per beam subgraph light, and coordinate adjustment electrically-controlled liquid crystal polarization member
The working condition etc. of part 11, utilizes persistence of vision principle, so that it may so that the first subgraph to be shown for being respectively formed in human eye and
Second subgraph to be shown is visually spliced into the image to be displayed in user, as shown in Figure 4.
Real world light passes through the augmented reality to show that optics module 10 enters human eye and forms ambient image.
Embodiment of the present invention provide augmented reality show optics module 10 by electrically-controlled liquid crystal polarizer 11, partially
The beam splitter 13, first that shakes reflects amplifier element 15, phase delay chip 17, the first reflecting element 19, the second reflecting element 21, the
Three reflecting elements 23 and second reflect the ingenious integrated and design of amplifier element 25, human eye formed the first subgraph to be shown and
Second subgraph to be shown keeps the first subgraph to be shown and second that are formed in human eye to be shown using persistence of vision effect
Subgraph is visually spliced into the image to be displayed in user.Therefore, which shows the visual field of optics module 10
Angle is equal to the sum of the field angle that the first reflection amplifier element 15 and second reflects amplifier element 25.Also, the first subgraph to be shown
The resolution ratio of picture and the second subgraph to be shown can identical and equal to image to be displayed resolution ratio.Therefore the augmented reality is aobvious
Show while optics module 10 is shown with big view field image with high-resolution, and optics module is shown relative to tradition
Augmented reality show optics module small volume.Meanwhile the augmented reality shows that optics module 10 is based on catoptric imaging principle
Imaging method reflection is assembled after image no color differnece, and the amplification imaging based on light pencil is so that amplified image
Center and peripheral has consistent clarity.
Conceived based on foregoing invention, the concrete structure of augmented reality display system 1 is also possible that but is not limited to such as Fig. 5 extremely
Shown in Fig. 9.Since augmented reality display system 1 shown in FIG. 1 includes Fig. 2 and two kinds of similar operation principles shown in Fig. 3, and
Fig. 2 is identical with operation principle shown in Fig. 3 for augmented reality shows optics module 10.Therefore, in order to save length,
In the description of Fig. 7 and Fig. 9, only illustrated by taking operation principle shown in Fig. 2 as an example.It should be understood that for ease of description, Fig. 1 is extremely
Augmented reality shown in Fig. 9 shows that optics module 10 is presented in the form of monocular.Those skilled in the art can be according to Fig. 1 extremely
Structure shown in Fig. 9 releases structure when augmented reality display optics module 10 is binocular.
Referring to Fig. 5, Fig. 5 is the structure chart of augmented reality display system 1 in another embodiment.It is similar with Fig. 1, it is different
Be：Second reflecting element 21 not instead of flat reflective element, concave reflective element, and the second reflection amplifier element 25 is set
It is set to the function that incident divergent beams are carried out with reflection convergence.When it is implemented, the reflective operation face of the second reflecting element 21
For concave reflection curved surface or the reflection diffraction plane with concave reflection equivalent function can be set as.Optionally, in this implementation
In mode, the reflective operation face of the first reflecting element 19 and the second reflecting element 21 is concave reflection curved surface.
As shown in fig. 6, Fig. 6 is the structure chart of augmented reality display system 1 in another embodiment.It is similar with Fig. 1, it is different
Be：First reflecting element 19 and third reflecting element 23 are concave reflective element, and the second reflection amplifier element 25 is set
For incident divergent beams are carried out with the function of reflection convergence.Similarly, when it is implemented, the reflective operation of the first reflecting element 19
Face can be concave reflection curved surface or be set as the reflection diffraction plane with concave reflection equivalent function.Optionally, in this reality
It applies in mode, the reflective operation face of the first reflecting element 19 is concave reflection curved surface.
As can be seen that for Fig. 5 and third reflecting element 23 shown in fig. 6 third reflecting element 23 relatively shown in FIG. 1
It is smaller.After user wears the augmented reality display system 1, third reflecting element 23 is close to user's nose, therefore third reflector
Part 23 is smaller, relatively smaller to field obscuration, wears more comfortable.Therefore, for Fig. 5 and augmented reality shown in fig. 6 display system
System 1 wears more comfortable, visual field bigger compared to augmented reality display system 1 shown in FIG. 1.
Referring to Fig. 7, Fig. 7 is the structure chart of augmented reality display system 1 in another embodiment.It is similar with Fig. 1, it is different
Be：Second reflecting element 21 and the not instead of flat reflective element of third reflecting element 23, concave reflective element.Similarly, have
When body is implemented, the reflective operation face of the second reflecting element 21 and third reflecting element 23 can be concave reflection curved surface or be set as
Reflection diffraction plane with concave reflection equivalent function.Optionally, in the present embodiment, the second reflecting element 21 and third
The reflective operation face of reflecting element 23 is concave reflection curved surface.In the specific implementation, the second reflecting element 21 and can be designed
The focal length of three reflecting elements 23 is identical, and makes the distance between the second reflecting element 21 and third reflecting element 23 along optical axis
For twice of focal length value.As shown in fig. 7, the focal length of third reflecting element 23 is F5, the second reflecting element 21 and third reflector
Along the distance of optical axis it is L54, then L54=2*F3 between part 23.It is such to can be designed so that through the second reflecting element 21 and
Three reflecting elements 23 reflect the second beam subgraph light that transformed second beam subgraph light is exported with image display device 50
Line has same image resolution ratio consistent.And when the first beam subgraph light and consistent the second beam subgraph light size,
Such design can also make the reflective diffractive structure of the first reflection amplifier element 15 and the reflection of the second reflection amplifier element 25 spread out
It penetrates that structure is identical, the design, processing cost and assembly difficulty of each element can be reduced, more conducively augmented reality shows optics
The mass production of module 10.Certainly, in other embodiments, the focal length of the second reflecting element 21 and third reflecting element 23
Can not also be identical, this is not restricted.
As shown in figure 8, Fig. 8 is the structure chart of augmented reality display system 1 in another embodiment.It is similar with Fig. 1, it is different
Be：It is concave reflection convergent component that first reflection amplifier element 15 and second, which reflects amplifier element 25,.
Referring to Fig. 9, Fig. 9 is the structure chart of augmented reality display system 1 in another embodiment.It is similar with Fig. 1, it is different
Be：The augmented reality shows that optics module 10 further includes polarization conversion device 29.Optionally, in the present embodiment, described
Polarization conversion device 29 can be arranged between polarization beam splitter 13 and the second reflecting element 21.It is clear that in other realities
It applies in mode, the polarization conversion device 29 can also be arranged between the second reflecting element 21 and third reflecting element 23, or
Setting is between third reflecting element 23 and second reflects amplifier element 25, or setting is reflected in polarization beam splitter 13 and first
Between amplifier element 15 etc..Subgraph light with linear polarization direction, which often passes through polarization conversion device 29, can increase π phases
Position delay, so that the polarization direction of subgraph light is converted to orthogonal polarization direction.For example, in this implementation
In mode, pass through polarization conversion through the second beam subgraph light of the first linear polarization direction of the polarization beam splitter 13
After element 29, polarization direction is converted to the second linear polarization direction by polarization conversion device 29, second linear polarization direction
The second beam subgraph light reflected successively by second reflecting element 21 and third reflecting element 23 after be transmitted to described the
Two reflection amplifier elements 25 reflect the reflection of amplifier element 25 by described second and assemble, to form the second subgraph to be shown in human eye
Picture.
The augmented reality that embodiment of the present invention provides shows optics module 10 and augmented reality display system 1 by electricity
Draining crystalline substance polarizer 11, polarization beam splitter 13, first reflect amplifier element 15, phase delay chip 17, the first reflecting element
19, the second reflecting element 21, third reflecting element 23 and second reflect the ingenious integrated and design of amplifier element 25, in human eye shape
At the first subgraph to be shown and the second subgraph to be shown, using persistence of vision effect, formed in human eye first is set to wait showing
Show that subgraph and the second subgraph to be shown are visually spliced into the image to be displayed in user.Therefore, the augmented reality
Show that the field angle of optics module 10 and augmented reality display system 1 is equal to the first reflection reflection amplification of amplifier element 15 and second
The sum of the field angle of element 25.Also, the resolution ratio of the first subgraph to be shown and the second subgraph to be shown can it is identical and
Equal to the resolution ratio of image to be displayed.Therefore the augmented reality shows that optics module 10 and augmented reality display system 1 have regards greatly
There is high-resolution, and relative to the augmented reality display optical mode for showing optics module with tradition while field picture is shown
Group and system bulk are smaller.Meanwhile the augmented reality shows that optics module 10 and augmented reality display system 1 are based on catoptric imaging
The imaging method of principle makes the image no color differnece after reflection convergence, and the amplification based on light pencil is imaged so that amplified figure
The center and peripheral of picture has consistent clarity.
Any feature disclosed in this specification (including any accessory claim, abstract and attached drawing), except non-specifically chatting
It states, can be replaced by other alternative features that are equivalent or have similar purpose.That is, unless specifically stated, each feature is only
It is an example in a series of equivalent or similar characteristics.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, any made by repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of augmented reality shows optics module, which is characterized in that including electrically-controlled liquid crystal polarizer, polarization beam splitter,
First reflection amplifier element, phase delay chip, the first reflecting element, the second reflecting element, third reflecting element and the second reflection
Amplifier element；
Image display device is sequentially output the first beam subgraph light and the second beam subgraph light of image to be displayed, wherein
First beam subgraph light and the second beam subgraph light are the collimation collimated light beam with the first linear polarization direction, and every width waits for
Show that image includes the first subgraph to be shown and the second subgraph to be shown, the first beam subgraph light waits showing with first
Show that subgraph corresponds to, the second beam subgraph light is corresponding with the second subgraph to be shown；
The electrically-controlled liquid crystal polarizer is set on the emitting light path of image display device, is used for after applying control voltage,
Incident the second beam subgraph light of the first linear polarization direction or the polarization direction of the first beam subgraph light are changed to the
Bilinear polarization direction, second linear polarization direction and the first linear polarization direction are orthogonal；
The polarization beam splitter is set on the emitting light path of the electrically-controlled liquid crystal polarizer, for the first linear polarization
The subgraph light in direction transmit and reflect the subgraph light of the second linear polarization direction；
The first reflection amplifier element is set on the first emitting light path of the polarization beam splitter, is that polarization sensitive is anti-
Convergent component is penetrated, for the first beam subgraph light or the to the first linear polarization direction through the polarization beam splitter
Two beam subgraph light carry out reflection convergence, to form the first subgraph to be shown or the second subgraph to be shown in human eye；
The phase delay chip is set between the second emitting light path of the polarization beam splitter and the first reflecting element, is used for
The polarization direction of the subgraph light of the second linear polarization direction reflected by the polarization beam splitter is converted to oval inclined
It shakes direction or circular polarization, and will be from the son in the reflected elliptical polarization direction of the first reflecting element or circular polarization
Image light is converted to non-second linear polarization direction；
Second reflecting element and third reflecting element are set in turn on the third emitting light path of the polarization beam splitter,
The first linear polarization direction subgraph light for will transmit through the polarization beam splitter reflexes to the second reflection amplification
Element；
The second reflection amplifier element is set on the emitting light path of the third reflecting element, reflects meeting for polarization sensitive
Poly- element, for the second beam subgraph light or first to the first linear polarization direction reflected by the third reflecting element
Beam subgraph light carries out reflection convergence, to form the second subgraph to be shown or the first subgraph to be shown in human eye；
After described image display device has exported the first beam subgraph light and the second beam subgraph light of image to be displayed,
The described first subgraph to be shown and the second subgraph to be shown that human eye is formed can visually be spliced into described wait in user
Show image；
Real world light passes through the augmented reality to show that optics module enters human eye and forms ambient image.
2. augmented reality according to claim 1 shows optics module, which is characterized in that first reflecting element, the
Two reflecting elements and third reflecting element are flat reflective element.
3. augmented reality according to claim 1 shows optics module, which is characterized in that first reflecting element and the
Three reflecting elements are flat reflective element, and second reflecting element is concave reflective element.
4. augmented reality according to claim 1 shows optics module, which is characterized in that first reflecting element and the
Three reflecting elements are concave reflective element, and second reflecting element is flat reflective element.
5. augmented reality according to claim 1 shows optics module, which is characterized in that first reflecting element is flat
Face reflecting element, second reflecting element and third reflecting element are concave reflective element.
6. showing optics module according to claim 1-5 any one of them augmented realities, which is characterized in that first reflection
Amplifier element and the second reflection amplifier element are plane reflection diffraction element.
7. showing optics module according to claim 1-5 any one of them augmented realities, which is characterized in that first reflection
Amplifier element and the second reflection amplifier element are concave reflection convergent component.
8. showing optics module according to claim 1-5 any one of them augmented realities, which is characterized in that the augmented reality
Show that optics module further includes polarization conversion device；
The polarization conversion device is set between the polarization beam splitter and the second reflecting element, or is set to described second
Between reflecting element and third reflecting element, or it is set between the third reflecting element and the second reflection amplifier element, or
It is set between polarization beam splitter and the first reflection amplifier element.
9. showing optics module according to claim 1-5 any one of them augmented realities, which is characterized in that the phase delay
Piece is 1/4 slide.
10. a kind of augmented reality display system, which is characterized in that including any one of image display device and claim 1-9 institute
The augmented reality stated shows optics module.
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| CN201810358432.8A CN108398792B (en) | 2018-04-20 | 2018-04-20 | Augmented reality display optical module and system |
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