CN108919531B - AR display system based on liquid crystal zoom lens - Google Patents
AR display system based on liquid crystal zoom lens Download PDFInfo
- Publication number
- CN108919531B CN108919531B CN201810882092.9A CN201810882092A CN108919531B CN 108919531 B CN108919531 B CN 108919531B CN 201810882092 A CN201810882092 A CN 201810882092A CN 108919531 B CN108919531 B CN 108919531B
- Authority
- CN
- China
- Prior art keywords
- liquid crystal
- light
- lens
- image
- polarized light
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/1313—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells specially adapted for a particular application
-
- 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
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/29—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the position or the direction of light beams, i.e. deflection
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/29—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the position or the direction of light beams, i.e. deflection
- G02F1/294—Variable focal length devices
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Liquid Crystal (AREA)
Abstract
The invention discloses an AR display system based on a liquid crystal zoom lens, which comprises: a micro display generating image light; a polarizing plate for polarizing the image light to form image polarized light; the liquid crystal screen is controlled by a computer to form a liquid crystal lens with variable focal length and the phase equivalent to the lens; a semi-transparent semi-reflective mirror plated with a polarizing film; partially reflecting the image polarized light into a liquid crystal lens; the ambient light forms ambient polarized light through the polarizing film and enters the liquid crystal lens; the computer loads an image into the micro display, controls the voltage distribution of the liquid crystal screen electrode, adjusts the focal length of the liquid crystal lens and focuses and images the image polarized light at the depth corresponding to the human eyes; the image polarized light is e light in the liquid crystal lens, and the environment polarized light is o light in the liquid crystal lens. The AR display system can realize multi-depth three-dimensional display of the virtual image, solves the problem of convergence conflict, and has the advantages of simple structure, strong practicability and important application value.
Description
Technical Field
The invention relates to the field of augmented reality display, in particular to an AR display system based on a liquid crystal zoom lens.
Background
Augmented Reality (AR) is a display technology that images displayed by microdisplay devices such as DMD, LCD, etc. through an optical system and provides the images to human eyes for viewing, and simultaneously, the images in the real environment enter human eyes without interference. The core of the method is to fuse a virtual scene and a real scene and provide a novel interactive display technology. The technology is expected to be applied to multiple aspects of teaching, military training, medicine, biology and the like, and is a hot technical problem of current research.
In the augmented reality technology, perfect fusion of a virtual scene and a real scene is a core content. In general, a helmet display scheme is adopted, that is, an image generated by a micro display device enters an eyepiece after passing through a half-transmitting and half-reflecting lens and then enters human eyes, and the image generated by the micro display device forms an enlarged image through the eyepiece. And the scene in the real environment is imaged to human eyes in equal proportion through an imaging system which consists of a compensation eyepiece, a semi-transparent and semi-reflective lens and an eyepiece and is formed by the compensation eyepiece and the eyepiece after passing through the compensation eyepiece. Therefore, when people perceive the real environment, people can perceive the amplified image generated by the micro display device, and the AR display scheme is realized.
According to the AR display scheme, binocular stereo AR display can be achieved through a binocular system. The disadvantages of this display approach are: the system is complex; in order to eliminate distortion, the ocular lens and the compensation ocular lens are generally in a multi-lens combination mode and are large in size; in addition, the depth of the virtual image displayed by the scheme is fixed and uncontrollable, convergence conflict exists during binocular three-dimensional display, and people can be dizzy after wearing the glasses for a long time.
Chinese patent publication No. CN107894666A discloses a head-mounted multi-depth stereoscopic image display system, which decomposes a three-dimensional image into pixel points of different depths through a light field algorithm, and projects the pixel points onto a plurality of planar optical units of corresponding depths for display, thereby realizing multi-depth light field display and solving the problem of convergence adjustment conflict.
Chinese patent publication No. CN107748442A discloses an augmented reality display device capable of quickly switching image depths, which can generate an image from a human eye's apparent distance to an infinite depth in a space by adjustment of a plurality of depth adjusters stacked in layers, can realize true three-dimensional light field display, effectively solve a convergence adjustment conflict, and improve user experience.
However, the two display systems respectively need a plurality of stacked planar optical units or depth adjusters, which occupy a large volume and are high in cost.
Disclosure of Invention
In order to effectively solve the convergence conflict and fully simplify the system structure, the invention provides an AR display system based on a liquid crystal zoom lens.
The invention provides the following technical scheme:
an AR display system based on a liquid crystal zoom lens, comprising:
a micro display which is an amplitude type display device and generates image light;
a polarizing plate for polarizing the image light to form image polarized light;
the liquid crystal screen is used for controlling the voltage distribution of the electrodes thereof through a computer to form a liquid crystal lens with variable focal length and the phase equivalent to the lens;
the semi-transparent semi-reflecting mirror is plated with a polarizing film and reflects the image polarized light part into the liquid crystal lens; the ambient light is polarized through the polarization film to form ambient polarized light, and the ambient polarized light partially penetrates through the semi-transparent semi-reflective mirror and then enters the liquid crystal lens;
the computer loads an image into the micro display, controls the voltage distribution of the liquid crystal screen electrode, adjusts the focal length of the liquid crystal lens and focuses and images the image polarized light at the depth corresponding to the human eyes;
the polarization direction of the image polarized light is orthogonal to that of the environment polarized light; the image polarized light is e light in the liquid crystal lens, and is modulated and imaged by the liquid crystal lens; the environment polarized light is o light in the liquid crystal lens, and the phase modulation amount of the environment polarized light is constant.
The working principle of the AR display system of the invention is as follows:
the image light generated by the micro display is polarized by the polarizer to form image polarized light, the image polarized light is reflected by the front surface part of the semi-transparent semi-reflecting mirror to enter the liquid crystal screen, and the polarization direction of the image polarized light is in the main plane of the liquid crystal screen (the main plane is a plane determined by the propagation direction of the light and the direction of the liquid crystal optical axis, wherein the liquid crystal optical axis is the direction of the long axis of the liquid crystal molecules) and is e light; the electrode electric field distribution of the liquid crystal screen is controlled by the computer, so that liquid crystal molecules in the liquid crystal screen deflect in the main plane of the liquid crystal screen to form a liquid crystal lens with equivalent phase distribution of the lens, the refractive index of incident e light is modulated, at the moment, the e light is modulated by the liquid crystal lens and then converged into human eyes, and the human eyes see a virtual image amplified to a distance by the liquid crystal lens. The focal length of the liquid crystal lens can be modulated by changing the electric field distribution of the electrodes, so that the magnified virtual image is imaged at different depths.
The environment light is polarized through a polarization film behind the semi-transparent semi-reflective mirror to form environment polarized light, the environment polarized light enters the liquid crystal screen after penetrating through the semi-transparent semi-reflective mirror, the polarization direction of the environment polarized light is perpendicular to the main plane of the liquid crystal screen and is o light, and the refractive index of the environment polarized light is irrelevant to the transmission direction. For o light, the liquid crystal transparent screen is just equivalent to a transparent glass plate, and ambient light can enter human eyes without interference and distortion, so that people can see scenes in the environment clearly.
The method can realize the rapid change of the imaging depth of the image polarized light by rapidly switching the focal length of the liquid crystal lens, realize the multi-depth three-dimensional display of the virtual image, and solve the problem of convergence conflict.
The micro display can be a non-luminous display device, such as a transmission type LCD, a reflection type DMD or a reflection type LCOS, and a light source is required to provide illumination light; and the display device can also be a self-luminous display device, such as a miniature OLED display screen, and in this case, an additional light source is not needed for providing illumination, so that the system is more compact.
One technical scheme is as follows: the micro display comprises:
the light source is used for generating three-color light, and the three-color light is controlled by the computer time sequence to be lightened in a time-sharing way to illuminate the display device;
the display device is illuminated by a light source, and images are loaded by a computer to modulate light from the light source to form image light.
The display device is a transmission type LCD, a reflection type DMD or a reflection type LCOS.
The light source comprises a red LED light source, a green LED light source and a blue LED light source, and divergent light emitted by each LED light source is combined by the beam combining mirror after passing through the collimating lens respectively to illuminate the display device.
Specifically, after divergent light emitted by the red, green and blue LED light sources is collimated by the collimating lens, one light beam is reflected by the total reflector, the other two light beams are reflected by the semi-transparent semi-reflector, and the three color lights are combined into one light beam to serve as illumination light for illuminating the micro-display. One beam of light is reflected by a total reflector, the other two beams of light are reflected by a semi-transparent semi-reflector, and three combination forms are provided, and any one form can realize time-sharing color AR display.
The other scheme is as follows: the red, green and blue LED light sources are replaced by red, green and blue laser light sources respectively.
The other technical scheme is as follows: the micro display is an OLED display screen which can emit light automatically. At the moment, an additional illumination light source is not needed for illumination, and the light path of the system is more compact.
To further make the AR display system compact, multiple fold mirrors may be used in the optical path.
Preferably, the liquid crystal display panel comprises a first glass substrate, an ITO electrode layer, a positioning layer, a pixel structure electrode layer, and a second glass substrate, which are stacked in sequence, and liquid crystal molecules are filled between the positioning layer and the pixel structure electrode layer.
Further preferably, the alignment layer is used to fix the orientation of the liquid crystal molecules.
When the liquid crystal screen is manufactured, the positioning layer is rubbed by fur or silk according to a certain direction, so that a groove structure in a certain direction is formed on the surface of the positioning layer and is used for fixing the orientation of liquid crystal molecules.
Further preferably, the position of the liquid crystal lens may be moved by changing the voltage distribution of the liquid crystal panel electrodes by a computer.
The voltage distribution of the liquid crystal screen electrodes can be changed by a computer according to the display requirements, so that the position of the liquid crystal lens is moved, and the exit pupil of the AR display system can be enlarged.
Compared with the prior art, the invention has the beneficial effects that:
the AR display system can realize rapid change of the imaging depth of the image polarized light by rapidly switching the focal length of the liquid crystal lens, realize multi-depth three-dimensional display of the virtual image and solve the problem of convergence conflict.
Drawings
FIG. 1 is a schematic diagram of a transmissive AR display system according to embodiment 1;
FIG. 2 is a schematic structural view of a half-mirror with a polarizing film coated on the back;
FIG. 3 is a schematic diagram of a liquid crystal lens and an incident light modulation;
FIG. 4 is a schematic diagram of a reflective AR display system according to embodiment 2;
FIG. 5 is a schematic diagram of an AR display system of embodiment 3 using a self-luminous microdisplay.
Detailed Description
The invention will be described in further detail below with reference to the drawings and examples, which are intended to facilitate the understanding of the invention without limiting it in any way.
Example 1
As shown in fig. 1, the liquid crystal zoom lens AR-based display system of the present embodiment is a system that employs a non-light-emitting transmissive LCD as a micro display device.
The AR display system includes a red LED1, a green LED2, a blue LED3, a collimating lens 4, a collimating lens 5, a collimating lens 6, a half-mirror 7, a half-mirror 8, a half-mirror 9, an LED controller 10, a half-mirror 11, a computer 12, a transmissive LCD13, a polarizer 14, a half-mirror 15 with a polarizing film plated on the back, and a liquid crystal LC 16.
Where E is the position of the user's eyes and 17 is the image polarized light emitted from the LCD device after passing through the polarizer 14 and the half mirror 15, as indicated by the solid line. And 18 is the ambient polarized light after the ambient light has passed through the transflective mirror 15 coated with a polarizing plate, and is indicated by a dotted line.
The LED controller 10, the microdisplay device transmissive LCD13, and the liquid crystal LC16 are controlled by a computer 12.
Divergent light emitted by the red LED1, the green LED2 and the blue LED3 is converted into plane waves by the collimating lens 4, the collimating lens 5 and the collimating lens 6 respectively, is reflected by the total reflection mirror 11 after being combined by the total reflection mirror 7, the semi-transmission mirror 8 and the semi-transmission mirror 9 respectively to illuminate the transmission type LCD13, a displayed image is loaded into the transmission type LCD13 by the computer 12, the light passing through the transmission type LCD13 penetrates through the polaroid 14 again, the polarization state of the light is located in a xoz plane, the light enters the liquid crystal LC16 after being reflected by the semi-transmission mirror 15, and the electrode distribution of the liquid crystal LC16 is controlled by the computer 12 to form the liquid crystal lens.
The polarization direction of the image polarized light 17 is located in the xoz plane, the xoz plane is a plane determined by the light propagation direction z and the long axis of the liquid crystal molecules and is a main plane, the image polarized light 17 is E light after entering the liquid crystal, the E light is subjected to phase modulation of the liquid crystal lens and converges at the point E, and the human eye can observe an enlarged virtual image formed at a far distance. After the ambient light passes through the half-mirror 15 coated with a polarizing film on the back, the polarization direction is vertical to the xoz plane, and after entering the liquid crystal LC16, the polarization direction is vertical to the main plane of the liquid crystal, i.e. o light, the refractive index is unchanged, the ambient light directly passes through the liquid crystal LC16, and the process is equivalent to passing through a piece of plate glass. Human eyes can watch a virtual image magnified and projected by the liquid crystal LC16 and scenes in the environment at the position E, and AR display is realized.
During actual display, the red, green and blue LEDs are turned on in different time, and different color channel images of a color image are synchronously loaded in the micro display device transmissive LCD13, so that color display is realized in a time-sequential manner.
Fig. 2 is a schematic structural view of the half mirror 15 coated with a polarizing film on the back side, the half mirror 15 coated with a polarizing film is composed of a half mirror 151 and a polarizing film 152, the polarizing film 152 is coated on the outer side of the half mirror 151, and only the polarized light with the vibration direction perpendicular to the plane xoz is allowed to pass through, i.e. the environment light passes through the half mirror 15 coated with a polarizing plate to form the polarized light with the polarization direction perpendicular to the plane xoz.
The liquid crystal LC16 has a structure as shown in fig. 3, and is composed of a glass substrate 161, ITO electrodes 162, alignment layers 163, pixel structure electrodes 164, and liquid crystal molecules 165. When the liquid crystal box is manufactured, the groove structure with a certain distribution of the orientation is generated on the positioning layer by rubbing silk according to one direction, so that liquid crystal molecules have a fixed orientation and serve as the initial orientation of the liquid crystal molecules. Under the action of the ITO electrode 162 and the pixel structure electrode 164, a certain voltage distribution is generated by external control, so that the liquid crystal molecules rotate only in the xoz plane, and a phase structure (liquid crystal lens) is formed.
Where 17 denotes image light from the display device with a polarization direction parallel to the main plane of the liquid crystal, e-light in the liquid crystal, and the refractive index n in the propagation direction thereof is related to the rotation angle α of the optical axis, which can be expressed as:
where α is the rotation angle of the optical axis, i.e., the rotation angle of the liquid crystal molecules (the angle between the long axis of the liquid crystal molecules and the propagation direction z), and on the plane perpendicular to the z axis, the refractive indices of the ordinary ray o and the extraordinary ray e are the main refractive indices, noAnd neWhen the liquid crystal material is determined, the main refractive index noAnd neIn known amounts.
Due to the rotation of the liquid crystal molecules, for e-light, the induced phase retardation can be expressed as:
Le＝(n-nair)d (2)
wherein n is the refractive index of e light in the propagation direction, and the calculation formula is shown as formula (1); n isairIs the refractive index of air; and d is the thickness of the liquid crystal. The liquid crystal LC16 generates a certain voltage distribution through the pixel electrodes, and can realize equivalent lens phase modulation. The image light displayed on the microdisplay device is imaged as a remotely magnified virtual image.
Suppose the distance d from the micro-display device to the liquid crystal lens1And the focal length of the formed liquid crystal lens is f, then d is satisfied1<In case of f, an enlarged virtual image is implemented, and the position where the virtual image is located can be expressed as:
in actual display, the relative position of the micro device and the liquid crystal LC16 is fixed, i.e. d1The focus f of the liquid crystal lens is changed by adjusting the voltage to form a fixed value, so that the image can be formed at different depths. By quickly changing the focal length f of the liquid crystal lens (for example, using blue phase liquid crystal to realize refreshing of 180hz and project a scene to three depths, the refreshing rate corresponding to human eyes is 60hz, for example, time-sharing color three-dimensional display can realize equivalent 20hz color three-dimensional body display, which basically meets the requirement of human beingsThe requirement of eye watching) and synchronously loading the images with corresponding depths, layered three-dimensional display can be realized, and convergence conflict is solved.
After the ambient light passes through the transflective mirror 15 coated with the polarizing film, the ambient polarized light 18 is formed, the polarization direction of which is perpendicular to the xoz plane, and the phase retardation after passing through the liquid crystal lens is expressed as:
Lo＝(no-nair)d (4)
nothe phase retardation produced is constant and therefore does not produce any phase modulation, equivalent to the polarized light 18 passing through a transparent plate.
Example 2
As shown in fig. 4, the liquid crystal zoom lens AR-based display system of the present embodiment is a system using a non-self-luminous reflective DMD or LCOS as a micro display device. The difference from example 1 is that the light from the light source is partially reflected by the half mirror 11, the reflected light illuminates the micro-display device DMD or LCOS, the DMD or LCOS loads the image to adjust the reflected light, and the modulated light is reflected, passes through the half mirror 11, is reflected by the half mirror with a back coated with a polarizing film, and enters the liquid crystal LC 16. The rest of the process was identical to example 1 and will not be described again.
Example 3
As shown in fig. 5, the liquid crystal zoom lens AR-based display system of the present example is an AR display system using a self-luminous microdisplay OLED. The OLED display 13 is controlled by the computer 12, the computer 12 loads an image onto the OLED display device 13, and light emitted therefrom is converted into polarized light having a polarization direction parallel to the plane xoz after passing through the polarizer 14, is partially reflected by the front surface of the half mirror 15 having a polarization film coated on the back surface thereof into the liquid crystal LC16, is modulated by the liquid crystal lens, and is converged at the position of the human eye E. After the ambient light penetrates through the half-mirror 15 with the polarizer plated on the back surface, the polarization direction of the ambient light is perpendicular to the xoz plane, and the ambient light enters human eyes without being affected, so that AR display is realized.
Compared with the embodiment 1 and the embodiment 2, the embodiment has the advantages of simple and compact structure and important application value.
The above-mentioned embodiments are intended to illustrate the technical solutions and advantages of the present invention, and it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the present invention, and any modifications, additions, equivalents, etc. made within the scope of the principles of the present invention should be included in the scope of the present invention.
Claims (8)
1. An AR display system based on a liquid crystal zoom lens, comprising:
a micro display which is an amplitude type display device and generates image light;
a polarizing plate for polarizing the image light to form image polarized light;
the liquid crystal screen is used for controlling the voltage distribution of the electrodes thereof through a computer to form a liquid crystal lens with variable focal length and the phase equivalent to the lens;
the semi-transparent semi-reflecting mirror is plated with a polarizing film and reflects the image polarized light part into the liquid crystal lens; the ambient light is polarized through the polarization film to form ambient polarized light, and the ambient polarized light partially penetrates through the semi-transparent semi-reflective mirror and then enters the liquid crystal lens;
the computer loads an image into the micro display, controls the voltage distribution of the liquid crystal screen electrode, adjusts the focal length of the liquid crystal lens and focuses and images the image polarized light at the depth corresponding to the human eyes;
the polarization direction of the image polarized light is orthogonal to that of the environment polarized light; the image polarized light is e light in the liquid crystal lens, and is modulated and imaged by the liquid crystal lens; the environment polarized light is o light in the liquid crystal lens, and the phase modulation amount of the environment polarized light is constant.
2. The liquid crystal zoom lens-based AR display system of claim 1, wherein the microdisplay comprises:
the light source is used for generating three-color light, and the three-color light is controlled by the computer time sequence to be lightened in a time-sharing way to illuminate the display device;
the display device is illuminated by a light source, and images are loaded by a computer to modulate light from the light source to form image light.
3. The liquid crystal zoom lens-based AR display system of claim 2, wherein the display device is a transmissive LCD, a reflective DMD or a reflective LCOS.
4. The AR display system based on the liquid crystal zoom lens as claimed in claim 2 or 3, wherein the light source comprises one each of red, green and blue LED light sources, and divergent light emitted by each LED light source is combined by the beam combining mirror after passing through the collimating lens to illuminate the display device.
5. The AR display system based on the liquid crystal zoom lens as claimed in claim 2 or 3, wherein the light source comprises one of red, green and blue laser light sources, and divergent light emitted by each laser light source is combined by the beam combining mirror after passing through the collimating lens to illuminate the display device.
6. The liquid crystal zoom lens-based AR display system of claim 1, wherein the microdisplays are self-emitting OLED display screens.
7. The AR display system based on the liquid crystal zoom lens as claimed in claim 1, wherein the liquid crystal screen comprises a first glass substrate, an ITO electrode layer, a positioning layer, a pixel structure electrode layer and a second glass substrate which are sequentially stacked, and liquid crystal molecules are filled between the positioning layer and the pixel structure electrode layer.
8. The liquid crystal zoom lens-based AR display system of claim 7, wherein the alignment layer is used to fix the orientation of the liquid crystal molecules.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810882092.9A CN108919531B (en) | 2018-08-03 | 2018-08-03 | AR display system based on liquid crystal zoom lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810882092.9A CN108919531B (en) | 2018-08-03 | 2018-08-03 | AR display system based on liquid crystal zoom lens |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108919531A CN108919531A (en) | 2018-11-30 |
| CN108919531B true CN108919531B (en) | 2021-07-13 |
Family
ID=64394232
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810882092.9A Active CN108919531B (en) | 2018-08-03 | 2018-08-03 | AR display system based on liquid crystal zoom lens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108919531B (en) |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111527440A (en) * | 2018-12-04 | 2020-08-11 | 京东方科技集团股份有限公司 | Display panel, display device and display method |
| CN109521567B (en) * | 2018-12-12 | 2023-11-10 | 杭州炽云科技有限公司 | Mechanism for applying polarizing film material in 3D imaging device |
| CN111323905A (en) * | 2018-12-13 | 2020-06-23 | 舜宇光学（浙江）研究院有限公司 | Display optical machine and method thereof and near-to-eye display equipment |
| CN109541807B (en) * | 2018-12-25 | 2021-03-02 | 北京谷东网科技有限公司 | Augmented reality stereoscopic display device and display method |
| CN109753260B (en) | 2018-12-29 | 2021-07-16 | 联想(北京)有限公司 | Electronic equipment and control method thereof |
| CN109725462B (en) * | 2019-03-04 | 2022-11-04 | 京东方科技集团股份有限公司 | Display device, display apparatus, and driving method of display device |
| CN113661430A (en) * | 2019-04-10 | 2021-11-16 | 3M创新有限公司 | Optical system |
| CN109917556A (en) * | 2019-04-20 | 2019-06-21 | 成都工业学院 | A kind of retina image-forming three-dimensional display apparatus |
| CN110161701B (en) * | 2019-06-17 | 2021-05-14 | 杭州光粒科技有限公司 | Multi-depth imaging method for polarized light sensitive AR (augmented reality) glasses waveguide |
| CN110361872A (en) * | 2019-07-15 | 2019-10-22 | 合肥工业大学 | A kind of perspective three dimensional display device and three-dimensional display system |
| CN110275311B (en) * | 2019-07-15 | 2022-04-12 | 合肥工业大学 | Perspective three-dimensional display device and three-dimensional display system based on liquid crystal lens array |
| CN110376752A (en) * | 2019-07-15 | 2019-10-25 | 合肥工业大学 | A kind of projection perspective three dimensional display device and three-dimensional display system |
| CN110824724A (en) * | 2019-10-25 | 2020-02-21 | 深圳市华星光电半导体显示技术有限公司 | 3D display optical system and device |
| 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 |
| CN113325588A (en) * | 2021-06-21 | 2021-08-31 | 凤凰光学股份有限公司 | High-brightness high-resolution high-contrast augmented reality display equipment |
| CN115704958A (en) * | 2021-08-16 | 2023-02-17 | 华为技术有限公司 | Optical imaging system and control method |
| CN114002869B (en) * | 2021-12-30 | 2022-03-22 | 南昌虚拟现实研究院股份有限公司 | Optical adjusting system applied to virtual reality display |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105319711A (en) * | 2014-07-04 | 2016-02-10 | 尚立光电股份有限公司 | Automatic-focusing head-mounted display |
| CN205563008U (en) * | 2016-01-12 | 2016-09-07 | 洪煦 | Virtual reality device based on controllable liquid crystal lens array |
| CN106338830A (en) * | 2016-08-31 | 2017-01-18 | 深圳超多维科技有限公司 | Image display apparatus and head-mounted display device |
-
2018
- 2018-08-03 CN CN201810882092.9A patent/CN108919531B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105319711A (en) * | 2014-07-04 | 2016-02-10 | 尚立光电股份有限公司 | Automatic-focusing head-mounted display |
| CN205563008U (en) * | 2016-01-12 | 2016-09-07 | 洪煦 | Virtual reality device based on controllable liquid crystal lens array |
| CN106338830A (en) * | 2016-08-31 | 2017-01-18 | 深圳超多维科技有限公司 | Image display apparatus and head-mounted display device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108919531A (en) | 2018-11-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108919531B (en) | AR display system based on liquid crystal zoom lens | |
| US11719943B2 (en) | Near-eye display having overlapping projector assemblies | |
| US20220413300A1 (en) | Methods and systems for displaying stereoscopy with a freeform optical system with addressable focus for virtual and augmented reality | |
| US10663735B2 (en) | Head-mounted display | |
| JP7228581B2 (en) | Augmented reality display with eyepiece having transparent emissive display | |
| US20190243147A1 (en) | Polarization-sensitive pancake optics | |
| CN107894666B (en) | Head-mounted multi-depth stereo image display system and display method | |
| US9091851B2 (en) | Light control in head mounted displays | |
| US20200033614A1 (en) | Display apparatus and on-vehicle head-up display system | |
| US20200301239A1 (en) | Varifocal display with fixed-focus lens | |
| JP7096371B2 (en) | Super stereoscopic display with enhanced off-angle separation | |
| CN112654902A (en) | Head Mounted Display (HMD) with spatially varying phase shifter optics | |
| AU2015231198A1 (en) | Directional backlight | |
| KR20100053590A (en) | Head-mounted single-panel stereoscopic display | |
| CN106940483B (en) | A kind of light field display device and display methods | |
| CN114660807A (en) | Near-to-eye display device | |
| JP3453086B2 (en) | Three-dimensional display method and head-mounted display device | |
| CN116324586A (en) | Optical system and display engine for augmented reality and near-eye head-mounted devices | |
| US10728534B2 (en) | Volumetric display system and method of displaying three-dimensional image | |
| US20220163816A1 (en) | Display apparatus for rendering three-dimensional image and method therefor | |
| CN216901153U (en) | Multi-depth HUD system capable of displaying in regions | |
| CN110967828A (en) | Display system and head-mounted display device | |
| TWI769783B (en) | Optical module and near-eye display device thereof | |
| US11719935B2 (en) | Optical display system having optical waveguides for guiding polarized lights and method, and display device having the same | |
| CN111552080A (en) | Optical path and AR glasses |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |