CN112596243A - Compact type transmission holographic near-eye three-dimensional display system and method based on point light source - Google Patents
Compact type transmission holographic near-eye three-dimensional display system and method based on point light source Download PDFInfo
- Publication number
- CN112596243A CN112596243A CN202011532961.9A CN202011532961A CN112596243A CN 112596243 A CN112596243 A CN 112596243A CN 202011532961 A CN202011532961 A CN 202011532961A CN 112596243 A CN112596243 A CN 112596243A
- Authority
- CN
- China
- Prior art keywords
- light
- light source
- eye
- dimensional
- compact
- 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.)
- Pending
Links
- 230000005540 biological transmission Effects 0.000 title claims abstract description 11
- 238000000034 method Methods 0.000 title claims abstract description 11
- 230000000149 penetrating effect Effects 0.000 claims abstract description 8
- 238000003384 imaging method Methods 0.000 claims description 18
- 230000010287 polarization Effects 0.000 claims description 17
- 208000003464 asthenopia Diseases 0.000 abstract description 4
- 239000004973 liquid crystal related substance Substances 0.000 abstract description 3
- 238000001914 filtration Methods 0.000 description 8
- 238000004364 calculation method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000004891 communication Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000035515 penetration Effects 0.000 description 4
- 230000001360 synchronised effect Effects 0.000 description 4
- 230000007547 defect Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000001093 holography Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000004424 eye movement Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000001454 recorded image Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- G02B2027/0174—Head mounted characterised by optical features holographic
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Holo Graphy (AREA)
Abstract
The invention provides a compact type transmission holographic near-eye three-dimensional display system and method based on a point light source, comprising the following steps: the device comprises a control module (101), a point light source (102), a polarizing plate (103), a non-polarizing beam splitter 104, a lens group 105, a polarizing beam splitter (106), a spatial light modulator (107), a quarter-wave plate (108) and a reflecting mirror (109); the intensity information and the depth information of the three-dimensional image are calculated into a common two-dimensional hologram through a holographic algorithm and loaded onto a liquid crystal spatial light modulator, and the three-dimensional image with real depth information can be projected by utilizing the phase modulation capability of the spatial light modulator, so that the visual fatigue of human eyes is eliminated; and the 4F system is simplified by turning the light path through the reflector, and a compact penetrating near-to-eye three-dimensional display system is realized.
Description
Technical Field
The invention relates to the technical field of holographic near-eye three-dimensional display, in particular to a compact type penetrating holographic near-eye three-dimensional display system and method based on a point light source.
Background
At present, the near-eye AR display technology mainly adopts OLED (organic light emitting diode) screens, LCos screens and the like, the provided image source is a two-dimensional image, the three-dimensional image display effect is realized by a binocular parallax technology, and the binocular vergence adjustment and the visual refraction adjustment are not matched inevitably, so that visual fatigue is generated.
The holographic three-dimensional display technology is a true three-dimensional display technology, can completely record and reconstruct a light field of a three-dimensional object, and provides all information required by a human visual system.
In a system for realizing holographic near-eye three-dimensional display by using a spatial light modulator, in order to filter interference of multi-level diffraction images and zero-level images on imaging and obtain a better eye movement range, a 4F imaging system is often required, so that the volume of the holographic near-eye display system is larger, and the head-mounted display system is not favorably realized.
Patent document CN111025517A discloses a particle field holography 4F imaging system and method, and in particular relates to a particle field holography 4F imaging system and method based on filtering, which solves the problems that when the existing filtering-based 4F imaging device is used for measurement, high-precision adjustment is difficult, imaging quality is low, recorded image noise is large, imaging background noise is large, test cost is high, and when a front lens group, a rear lens group and the filtering device are integrated, the filtering device cannot be replaced in different application scenes. The 4F imaging system is characterized in that: the device comprises a pulse laser, a beam expanding collimating lens, a 4F imaging device and a recording medium which are sequentially arranged along a light path; the 4F imaging device comprises a front lens group, a vacuum assembly and a rear lens group; the vacuum assembly comprises a vacuum assembly sleeve, a filtering device, a first vacuum valve, a second vacuum valve, a front vacuum sealing window and a rear vacuum sealing window; the filtering device is detachably and hermetically connected with the vacuum assembly sleeve; the filter glass is a high-pass filter glass. There is still room for improvement in structural and technical performance.
Disclosure of Invention
In view of the defects in the prior art, the present invention aims to provide a compact transmissive holographic near-eye three-dimensional display system and method based on a point light source.
The invention provides a compact type penetration holographic near-eye three-dimensional display system based on a point light source, which comprises: a control module 101, a point light source 102, a polarizer 103, a non-polarizing beam splitter 104, a lens group 105, a polarizing beam splitter 106, a spatial light modulator SLM 107, a quarter wave plate QWP108 and a mirror 109; the control module 101 calculates three-dimensional image information to be displayed into a two-dimensional hologram through a holographic algorithm; according to the information of the two-dimensional hologram, the two-dimensional hologram is output and loaded on a spatial light modulator 107 to be displayed, and a point light source 102 is synchronously controlled to emit light; divergent light emitted by the point light source 102 passes through the polarizing plate 103, is reflected by the non-polarizing beam splitter 104 and propagates downwards, is collimated into parallel light by the lens group 105, and is incident on the spatial light modulator 107 after passing through the polarizing beam splitter 106; after the light beam is modulated by the spatial light modulator 107, the reflected and diffracted three-dimensional imaging light beam enters human eyes after passing through a compact 4F system formed by a polarization beam splitter 106, a lens group 105, a quarter-wave plate 108 and a reflecting mirror 109, so that the human eyes observe virtual three-dimensional image information; meanwhile, the light beam of the external environment can enter the human eye through the polarization beam splitter 106; the control module 101 mainly completes the calculation and loading of the hologram of the image information, and the synchronous control work of the spatial light modulation and the light source. As shown in fig. 2, the control module mainly includes a main control unit, a control program interface, an external communication interface, a hologram calculation unit, a storage unit, an SLM driving unit, and a light source driving unit. The main control unit completes the control work of the whole system; the control program interface mainly provides a human-computer interface; the external communication interface mainly comprises wired interfaces such as video and data, or wireless interfaces such as wireless, Bluetooth and infrared interfaces for receiving external data; the hologram calculation unit generates a hologram from the corresponding three-dimensional image information or data through a hologram algorithm, and outputs the hologram to the spatial light modulator driving unit through the main control unit, so that the spatial light modulator is driven to modulate the light beam incident on the spatial light modulator driving unit to output the corresponding three-dimensional image information; the main control unit can also output and display the hologram which is stored in advance by the internal or external storage unit to the spatial light modulator; the main control unit can realize synchronous driving of the spatial light modulator and the light source.
Preferably, the emergent light beam of the point light source 102 is divergent spherical light; the divergent sphere light is reflected by the non-polarizing beam splitter 104 and transmitted downward after passing through the polarizer 103, collimated into parallel light by the lens assembly 105, and then transmitted through the polarizing beam splitter 106 and incident on the spatial light modulator 107.
Preferably, the point light source 102 adopts any one of the following light sources: a monochromatic laser light source with coherence; a color laser light source; monochromatic or color LED light sources.
Preferably, when the point light source 102 employs an RGB color light source, it needs to perform timing synchronization control with the spatial light modulator 107, so as to implement color holographic three-dimensional display.
Preferably, the polarizing plate 103 is disposed to transmit P-polarized light.
Preferably, the polarization beam splitter 106 is configured to transmit P-polarized light and reflect S-polarized light, so as to ensure that the light beam is incident on the spatial light modulator 107 and is not reflected directly into the human eye.
Preferably, after the three-dimensional imaging light beam reflected and diffracted from the spatial light modulator 107 passes through the polarization beam splitter 106, P-polarized light is transmitted upwards to pass through the lens group 105, and S-polarized light is reflected out of the system to become ineffective light; the P polarized light passing through the lens assembly 105 continuously propagates upwards, passes through the quarter-wave plate 108 and then becomes circularly polarized light, after being reflected by the reflector 109, the circularly polarized light passes through the quarter-wave plate 108 again and then becomes S polarized light and continuously propagates downwards, and after passing through the lens assembly 105, the circularly polarized light is reflected by the polarization beam splitter 106 and enters human eyes, so that the human eyes observe virtual three-dimensional image information.
Preferably, the spatial light modulator 107 is a reflective spatial light modulator.
Preferably, the reflecting mirror 109 is located on the fourier transform surface of the lens group 105, and has an effect of turning the optical path, and also has a filtering effect of the near-to-eye display system, and by controlling the size of the corresponding reflecting surface, interference of the multi-order diffraction image and the zero-order image on imaging can be filtered.
Preferably, the spatial light modulator 107, the polarization beam splitter 106, the lens group 105, the quarter-wave plate 108 and the mirror 109 constitute a compact 4F system;
the lens group 105 is a front lens group of the compact 4F system and a rear lens group of the compact 4F system, and has an effect of collimating incident divergent light into parallel light.
The polarization beam splitter 106 can be set to transmit S-polarized light and reflect P-polarized light, and the corresponding polarizer 103 can be set to transmit S-polarized light.
According to the compact type transmission type holographic near-eye three-dimensional display method based on the point light source, the compact type transmission type holographic near-eye three-dimensional display system based on the point light source is adopted to carry out the compact type transmission type holographic near-eye three-dimensional display system based on the point light source.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention provides a compact penetration type holographic near-eye three-dimensional display method and a compact penetration type holographic near-eye three-dimensional display system based on a spatial light modulator, wherein the intensity information and the depth information of a three-dimensional image are calculated into a common two-dimensional hologram through a holographic algorithm and loaded onto a liquid crystal spatial light modulator, and the three-dimensional image with real depth information can be projected by utilizing the phase modulation capability of the spatial light modulator, so that the visual fatigue of human eyes is eliminated;
2. the invention simplifies the 4F system by turning the light path through the reflector, and realizes a compact penetrating near-to-eye three-dimensional display system;
3. the invention has reasonable structure and convenient use and can overcome the defects of the prior art.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a schematic diagram of the light path principle of a compact transmissive holographic near-eye three-dimensional display system based on a point light source according to the present invention.
Fig. 2 is a schematic diagram of a control module in an embodiment of the invention.
Fig. 3 is a schematic diagram of a light source incident system in an embodiment of the invention.
Fig. 4 is a first schematic diagram of a compact 4F system in an embodiment of the invention.
Fig. 5 is a second schematic diagram of a compact 4F system in an embodiment of the invention.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the present invention.
As shown in fig. 1-5, the invention provides a compact penetration holographic near-eye three-dimensional display method and system based on a spatial light modulator, intensity information and depth information of a three-dimensional image are calculated into a common two-dimensional hologram through a holographic algorithm and loaded onto a liquid crystal spatial light modulator, and the three-dimensional image with real depth information can be projected by utilizing the phase modulation capability of the spatial light modulator, so that the visual fatigue of human eyes is eliminated; and the 4F system is simplified by turning the light path through the reflector, and a compact penetrating near-to-eye three-dimensional display system is realized.
As shown in fig. 1, a compact transmissive holographic near-eye three-dimensional display system based on a point light source includes a control module 101, a point light source 102, a polarizer 103, a non-polarizing beam splitter 104, a lens group 105, a polarizing beam splitter 106, a spatial light modulator SLM 107, a quarter-wave plate QWP108, and a mirror 109. Firstly, the control module 101 calculates three-dimensional image information to be displayed into a two-dimensional hologram through a holographic algorithm, outputs the two-dimensional hologram to be loaded on the spatial light modulator 107 for display, and synchronously controls the point light source 102 to emit light. Divergent light emitted from the point light source 102 passes through the polarizing plate 103, is reflected by the non-polarizing beam splitter 104, propagates downward, is collimated into parallel light by the lens group 105, passes through the polarizing beam splitter 106, and then is incident on the spatial light modulator 107. After the light beam is modulated by the spatial light modulator 107, the reflected and diffracted three-dimensional imaging light beam enters human eyes through a compact 4F system composed of the polarization beam splitter 106, the lens group 105, the quarter-wave plate 108 and the reflecting mirror 109, so that the human eyes observe virtual three-dimensional image information. Meanwhile, the light beam of the external environment can enter the human eye through the polarization beam splitter 106.
The control module 101 mainly completes the calculation and loading of the hologram of the image information, and the synchronous control work of the spatial light modulation and the light source. As shown in fig. 2, the control module mainly includes a main control unit, a control program interface, an external communication interface, a hologram calculation unit, a storage unit, an SLM driving unit, and a light source driving unit. The main control unit completes the control work of the whole system; the control program interface mainly provides a human-computer interface; the external communication interface mainly comprises wired interfaces such as video and data, or wireless interfaces such as wireless, Bluetooth and infrared interfaces for receiving external data; the hologram calculation unit generates a hologram from the corresponding three-dimensional image information or data through a hologram algorithm, and outputs the hologram to the spatial light modulator driving unit through the main control unit, so that the spatial light modulator is driven to modulate the light beam incident on the spatial light modulator driving unit to output the corresponding three-dimensional image information; the main control unit can also output and display the hologram which is stored in advance by the internal or external storage unit to the spatial light modulator; the main control unit can realize synchronous driving of the spatial light modulator and the light source.
Fig. 3 shows a light source incident system. The light source 102 is a point light source, the emergent light beam is divergent spherical light, after passing through the polarizer 103, the divergent spherical light beam is reflected by the non-polarizing beam splitter 104 and propagates downwards, and is collimated into parallel light by the lens group 105, and then the parallel light beam is incident on the spatial light modulator 107 after passing through the polarizing beam splitter 106.
The point light source 102 is a monochromatic laser light source or a color laser light source with coherence, and can also be a monochromatic or color LED light source;
when the point light source is 102 RGB color light sources, the timing synchronization control with the spatial light modulator 107 is required, thereby realizing the color holographic three-dimensional display.
The polarizing plate 103 is disposed to transmit P-polarized light.
The polarization beam splitter 106 is configured to transmit P-polarized light and reflect S-polarized light, thereby ensuring that the light beam is incident on the spatial light modulator 107 and is not reflected directly into the human eye.
The compact 4F system is shown in fig. 4 and 5, and is composed of a spatial light modulator 107, a polarization beam splitter 106, a lens group 105, a quarter-wave plate 108 and a reflector 109, where fig. 4 shows a light beam uplink system, and fig. 5 shows a light beam downlink system. After the three-dimensional imaging light beam reflected and diffracted from the spatial light modulator 107 passes through the polarization beam splitter 106, the P polarized light is transmitted upwards to pass through the lens group 105, and the S polarized light is reflected out of the system to become invalid light; the P polarized light passing through the lens assembly 105 continuously propagates upwards, passes through the quarter-wave plate 108 and then becomes circularly polarized light, after being reflected by the reflector 109, the circularly polarized light passes through the quarter-wave plate 108 again and then becomes S polarized light and continuously propagates downwards, and after passing through the lens assembly 105, the circularly polarized light is reflected by the polarization beam splitter 106 and enters human eyes, so that the human eyes observe virtual three-dimensional image information.
The spatial light modulator 107 is a reflective spatial light modulator.
The reflecting mirror 109 is located on the Fourier transform surface of the lens group 105, has the function of turning a light path, and simultaneously has the filtering function of a near-to-eye display system, and can filter the interference of multi-level diffraction images and zero-level image imaging by controlling the size of the corresponding reflecting surface.
The lens group 105 is a front lens group of a 4F system and a rear lens group of a 4F system, and has a function of collimating incident divergent light into parallel light.
The pbs 106 may also be configured to transmit S-polarized light and reflect P-polarized light, and the corresponding polarizer 103 should be configured to transmit S-polarized light.
In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (10)
1. A compact transmissive holographic near-to-eye three-dimensional display system based on point light sources, comprising: the device comprises a control module (101), a point light source (102), a polarizing plate (103), a non-polarizing beam splitter (104), a lens group (105), a polarizing beam splitter (106), a spatial light modulator (107), a quarter wave plate (108) and a reflecting mirror (109);
the control module (101) calculates three-dimensional image information to be displayed into a two-dimensional hologram;
according to the information of the two-dimensional hologram, the two-dimensional hologram output is loaded on a spatial light modulator (107) for display, and a point light source (102) is synchronously controlled to emit light;
divergent light emitted by the point light source (102) penetrates through the polarizing plate (103), is reflected by the non-polarizing beam splitter (104) and propagates downwards, is collimated into parallel light through the lens group (105), and is incident on the spatial light modulator (107) after penetrating through the polarizing beam splitter (106);
after the light beam is modulated by a spatial light modulator (107), the reflected and diffracted three-dimensional imaging light beam enters human eyes after passing through a compact 4F system consisting of a polarization beam splitter (106), a lens group (105), a quarter-wave plate (108) and a reflector (109), so that the human eyes observe virtual three-dimensional image information; meanwhile, the light beam of the external environment can enter the human eye through the polarization beam splitter (106).
2. The compact transmissive holographic near-to-eye three-dimensional point light source-based display system of claim 1, wherein the exit beam of the point light source (102) is diverging spherical light;
the divergent sphere light is reflected by a non-polarizing beam splitter (104) to be transmitted downwards after penetrating through a polarizing film (103), is collimated into parallel light after passing through a lens group (105), and is incident on a spatial light modulator (107) after penetrating through a polarizing beam splitter (106).
3. The compact transmissive holographic near-to-eye three-dimensional point light source-based display system of claim 1, wherein the point light source (102) employs any one of the following:
-a monochromatic laser light source with coherence;
-a colour laser light source;
-a monochromatic or a color LED light source.
4. The compact transmissive holographic near-to-eye three-dimensional point light source-based display system of claim 1, wherein the point light source (102) is an RGB color light source, and is controlled in time sequence with the spatial light modulator (107).
5. The point source based compact transmissive holographic near-to-eye three-dimensional display system of claim 1, wherein the polarizer (103) is arranged to be P-polarized light transmissive.
6. The point source based compact transmissive holographic near-to-eye three-dimensional display system of claim 1, wherein the polarizing beam splitter (106) is configured for P-polarized light transmission and S-polarized light reflection.
7. The point light source-based compact transmissive holographic near-to-eye three-dimensional display system of claim 1, wherein after the three-dimensional imaging light beam reflected and diffracted from the spatial light modulator (107) passes through the polarizing beam splitter (106), the P-polarized light transmission propagates upward through the lens group (105), and the S-polarized light is reflected out of the system to become ineffective light; the P polarized light which penetrates through the lens group (105) continuously transmits upwards, penetrates through the quarter-wave plate (108) and then becomes circularly polarized light, after being reflected by the reflecting mirror (109), the circularly polarized light penetrates through the quarter-wave plate (108) again and then becomes S polarized light and continuously transmits downwards, after penetrating through the lens group (105), the circularly polarized light enters human eyes after being reflected by the polarization beam splitter (106), and therefore the human eyes can observe virtual three-dimensional image information.
8. The point light source-based compact transmissive holographic near-to-eye three-dimensional display system of claim 1, wherein the spatial light modulator (107) is a reflective spatial light modulator.
9. The point source based compact transmissive holographic near-to-eye three-dimensional display system of claim 1, wherein the mirror (109) is located on a fourier transform face of a lens group (105);
the spatial light modulator (107), the polarization beam splitter (106), the lens group (105), the quarter-wave plate (108) and the reflector (109) form a compact 4F system;
the lens group (105) is a front lens group of the compact 4F system and a rear lens group of the compact 4F system, and the lens group (105) has the function of collimating incident divergent light into parallel light;
the polarizing beam splitter (106) can also be set to transmit S-polarized light and reflect P-polarized light, and the corresponding polarizer (103) is set to transmit S-polarized light.
10. A compact transmission type holographic near-eye three-dimensional display method based on a point light source, which is characterized in that the compact transmission type holographic near-eye three-dimensional display system based on the point light source is adopted by the compact transmission type holographic near-eye three-dimensional display system based on the point light source of any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011532961.9A CN112596243A (en) | 2020-12-22 | 2020-12-22 | Compact type transmission holographic near-eye three-dimensional display system and method based on point light source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011532961.9A CN112596243A (en) | 2020-12-22 | 2020-12-22 | Compact type transmission holographic near-eye three-dimensional display system and method based on point light source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112596243A true CN112596243A (en) | 2021-04-02 |
Family
ID=75200454
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011532961.9A Pending CN112596243A (en) | 2020-12-22 | 2020-12-22 | Compact type transmission holographic near-eye three-dimensional display system and method based on point light source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112596243A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113900254A (en) * | 2021-10-21 | 2022-01-07 | 合肥工业大学 | Near-to-eye display device and method for holographic display |
| WO2024022285A1 (en) * | 2022-07-29 | 2024-02-01 | 京东方科技集团股份有限公司 | Holographic light field display system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005025906A (en) * | 2003-07-02 | 2005-01-27 | Olympus Corp | Device and method for recording/reproducing optical information |
| US20070252954A1 (en) * | 2003-05-22 | 2007-11-01 | Mcguire James P Jr | Beamsplitting structures and methods in optical systems |
| CN110376739A (en) * | 2019-07-03 | 2019-10-25 | 浙江大学 | A kind of hologram plane mixing near-eye display system quickly calculated based on the big emergent pupil of light polarization direction |
-
2020
- 2020-12-22 CN CN202011532961.9A patent/CN112596243A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070252954A1 (en) * | 2003-05-22 | 2007-11-01 | Mcguire James P Jr | Beamsplitting structures and methods in optical systems |
| JP2005025906A (en) * | 2003-07-02 | 2005-01-27 | Olympus Corp | Device and method for recording/reproducing optical information |
| CN110376739A (en) * | 2019-07-03 | 2019-10-25 | 浙江大学 | A kind of hologram plane mixing near-eye display system quickly calculated based on the big emergent pupil of light polarization direction |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113900254A (en) * | 2021-10-21 | 2022-01-07 | 合肥工业大学 | Near-to-eye display device and method for holographic display |
| CN113900254B (en) * | 2021-10-21 | 2024-09-20 | 合肥工业大学 | Near-to-eye display device and method for holographic display |
| WO2024022285A1 (en) * | 2022-07-29 | 2024-02-01 | 京东方科技集团股份有限公司 | Holographic light field display system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11418764B2 (en) | Image and wave field projection through diffusive media | |
| CN115309021B (en) | Head-up display | |
| US10969675B1 (en) | Optical assemblies having scanning reflectors for projecting augmented reality content | |
| CN112596239A (en) | Holographic near-eye display method and system based on spatial light modulator | |
| CN113608353A (en) | Holographic near-eye display system based on array light source and eye pupil box expansion method | |
| CN114384701A (en) | Display system and method | |
| US11181815B1 (en) | Optical devices including reflective spatial light modulators for projecting augmented reality content | |
| US11698539B2 (en) | Short distance illumination of a spatial light modulator using a pancake lens assembly | |
| CN109683461B (en) | Hologram generation method and system based on light field rendering, storage medium and near-to-eye AR holographic three-dimensional display system | |
| CN112596242A (en) | Color holographic near-to-eye display method and system based on spatial light modulator time division multiplexing | |
| US12591143B2 (en) | Devices with monochromatic liquid crystal on silicon displays | |
| CN111694254B (en) | Laser modulation | |
| US11726336B2 (en) | Active zonal display illumination using a chopped lightguide | |
| CN112649962A (en) | Large-field-angle holographic display system and method based on single spatial light modulator | |
| CN115145036A (en) | Large field of view high-resolution holographic near-eye display device and display method based on light source array | |
| CN113608354A (en) | Holographic near-eye display system based on electric control polarization modulator and eye pupil box expansion method | |
| CN112596243A (en) | Compact type transmission holographic near-eye three-dimensional display system and method based on point light source | |
| CN112649961A (en) | Holographic AR display system and method based on spatial light modulator | |
| CN115793239A (en) | Holographic near-to-eye display system and method based on multiple spatial light modulators | |
| CN113608352A (en) | Holographic near-eye display system based on exit pupil scanning and eye pupil box expansion method | |
| CN216351537U (en) | Holographic near-to-eye three-dimensional display system | |
| CN215986725U (en) | Holographic near-to-eye display system based on multiple spatial light modulators | |
| US11526016B1 (en) | Spatial light modulator displays with divergence correction lens | |
| JP2003015079A (en) | Stereoscopic image display method and display device | |
| US20240272436A1 (en) | Image display apparatus and light guide optical system |
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 | ||
| AD01 | Patent right deemed abandoned |
Effective date of abandoning: 20230707 |
|
| AD01 | Patent right deemed abandoned |