CN111142264A - Super-multi-viewpoint retina imaging device based on orthogonal polaroid - Google Patents
Super-multi-viewpoint retina imaging device based on orthogonal polaroid Download PDFInfo
- Publication number
- CN111142264A CN111142264A CN202010109864.2A CN202010109864A CN111142264A CN 111142264 A CN111142264 A CN 111142264A CN 202010109864 A CN202010109864 A CN 202010109864A CN 111142264 A CN111142264 A CN 111142264A
- Authority
- CN
- China
- Prior art keywords
- orthogonal
- display panel
- light
- transmission type
- 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.)
- Pending
Links
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
- G02B27/0101—Head-up displays characterised by optical features
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
Abstract
The invention discloses a super-multi-viewpoint retina imaging device based on an orthogonal polarizer, which comprises a point light source, a lens, an orthogonal polarizer, a polarized light converter, a transmission type display panel and a half-transmitting and half-reflecting mirror. After being converged by the lens, light rays emitted by the point light source sequentially pass through the orthogonal polarizer, the polarized light converter, the transmission type display panel and the semi-transmitting and semi-reflecting mirror, a convergence point is formed at the center of a pupil of a human eye, and finally an image is formed on a retina of the human eye. Two parallax images are projected to retinas of human eyes in a time sequence mode through the orthogonal polaroid and the polarized light converter, a monocular multi-view stereoscopic display effect is formed, richer depth clues are provided for a monocular, and meanwhile the effect of overlapping display of the virtual stereoscopic images and the real environment is achieved.
Description
Technical Field
The invention relates to a super-multi-viewpoint technology and a retina imaging technology, in particular to a super-multi-viewpoint retina imaging device based on an orthogonal polarizer.
Background
The near-to-eye display structure is adopted in the newly emerging AR/VR technology in recent years, namely, images are projected at the near-distance position of eyes of a viewer, meanwhile, fusion display of real and virtual images is realized through image fusion devices such as a semi-transparent semi-reflecting mirror, a planar waveguide and a free-form surface, the existing near-to-eye display equipment images a virtual image provided by a computer on a certain fixed plane in space, for a near-sighted or far-sighted patient, the near-sighted or far-sighted patient needs to wear both near-sighted or far-sighted glasses and AR equipment, great inconvenience is brought to the use of the near-sighted and far-sighted patients, and the viewing experience.
The retina imaging technology directly images an image on the retina of human eyes, clear images can be obtained on the retinas of normal people and patients with myopia or hyperopia, and clear imaging is always kept in the process of adjusting the focus of the human eyes, so that the retina imaging technology can superpose virtual images on any depth plane in space and changes along with the difference of the focusing depth of the human eyes. But at present, only retinal imaging of a single image can be realized, and a viewer can only see a 2D plane image. The super-multi-viewpoint technology is used as a 3D display technology, so that retina imaging and the super-multi-viewpoint technology are combined, virtual images and a real three-dimensional space can be organically fused, and the method is a new direction for developing an AR/VR technology.
Disclosure of Invention
The invention discloses a super-multi-viewpoint retina imaging device based on an orthogonal polarizer, which is composed of a point light source, a lens, an orthogonal polarizer, a polarized light converter, a transmission type display panel and a half-transmitting and half-reflecting mirror, as shown in figure 1. After being converged by the lens, light rays emitted by the point light source sequentially pass through the orthogonal polarizer, the polarized light converter, the transmission type display panel and the semi-transmitting and semi-reflecting mirror, a convergence point is formed at the center of a pupil of a human eye, and finally an image is formed on a retina of the human eye.
The point light source is positioned at the foremost end of the device and provides a backlight source for the whole device;
the lens converges the light emitted by the point light source to generate a convergence point;
the cross polarizing plates are arranged in a two-dimensional matrix by unit cells with mutually orthogonal polarization directions, as shown in fig. 2, the polarization directions of adjacent unit cells are mutually orthogonal, and the size of the unit cell is the same as the size of a pixel on the transmission type display panel;
the orthogonal polaroid modulates incident unpolarized light into polarized light of which adjacent units are orthogonal to each other;
the polarized light converter realizes the change of the polarization direction of incident polarized light through voltage switching;
the transmission type display panel modulates the polarized light brightness in a certain polarization direction, two parallax images are displayed on the transmission type display panel, the arrangement mode of the two parallax images is shown in figure 3, and pixels of the parallax images 1 and 2 are arranged at intervals in the horizontal direction and the vertical direction;
the orthogonal polaroid, the polarized light converter and the transmission type display panel are closely arranged;
the semi-transparent semi-reflecting mirror has a semi-transparent semi-reflecting function on incident light, light from the transmission type display panel enters human eyes after being reflected by the semi-transparent semi-reflecting mirror, and light from the real world enters human eyes after being transmitted by the semi-transparent semi-reflecting mirror, so that superimposed display of a virtual image and a real environment is realized.
Light rays emitted by a point light source are converged by a lens, and then polarized by an orthogonal polarizer to obtain polarized light which is orthogonal to each other of adjacent units, a polarized light converter is used for rapidly switching the incident polarized light, the polarization direction of the incident polarized light is changed in a time sequence, at a certain moment, the orthogonal polarized light incident on a transmission type display panel only has polarized light in one direction, namely, half of the light rays of a unit cell can pass through the transmission type display panel to irradiate a parallax image 1, a convergence point is formed at the pupil of a human eye, and the parallax image 1 is clearly imaged on a retina; at the next moment, polarized light in the other direction, namely light of the other half of the unit cells, passes through the transmission type display panel, illuminates the parallax image 2, the same convergence point is formed at the pupil of the human eye, and the parallax image 2 is clearly imaged on the retina.
The switching frequency of the polarized light converter meets the persistence effect of human eyes, two parallax images are obtained by a single eye, the retina imaging of ultra-multiple viewpoints is realized, more accurate focusing clues are provided for a viewer, and more real visual experience is obtained.
The invention projects two parallax images onto the retina of human eyes in time sequence through the orthogonal polaroid and the polarized light converter to form a monocular and multiview stereo display effect, provides richer depth clues for a monocular, and simultaneously realizes the effect of superimposing and displaying the virtual stereo image and a real environment.
Drawings
FIG. 1 is a schematic diagram of a super-multi-viewpoint retinal imaging device based on orthogonal polarizers
FIG. 2 is a schematic view of a cross polarizer structure according to the present invention
FIG. 3 is a schematic diagram of two parallax image pixel arrangements displayed on a transmissive display panel according to the present invention
The reference numbers in the figures are:
1 point light source P, 2 lenses, 3 crossed polarizers, 4 polarized light converters, 5 transmission type display panels, 6 half mirrors, 7 convergence points, 8 human eye pupils, 9 retinas, 10 horizontal polarization, 11 vertical polarization, 12 pixels of parallax image 1, and 13 pixels of parallax image 2.
It should be understood that the above-described figures are merely schematic and are not drawn to scale.
Detailed Description
The present invention will be described in further detail with reference to the following detailed description of an exemplary embodiment of the super multi-viewpoint retinal imaging device based on crossed polarizers according to the present invention. It should be noted that the following examples are only for illustrative purposes and should not be construed as limiting the scope of the present invention, and that the skilled person in the art may make modifications and adaptations of the present invention without departing from the scope of the present invention.
The invention discloses a super-multi-viewpoint retina imaging device based on an orthogonal polarizer, which is composed of a point light source, a lens, an orthogonal polarizer, a polarized light converter, a transmission type display panel and a half-transmitting and half-reflecting mirror, as shown in figure 1. After being converged by the lens, light rays emitted by the point light source sequentially pass through the orthogonal polarizer, the polarized light converter, the transmission type display panel and the semi-transmitting and semi-reflecting mirror, a convergence point is formed at the center of a pupil of a human eye, and finally an image is formed on a retina of the human eye.
The point light source is positioned at the foremost end of the device and provides a backlight source for the whole device;
the lens converges the light emitted by the point light source to generate a convergence point;
the cross polarizing plates are arranged in a two-dimensional matrix by unit cells with mutually orthogonal polarization directions, as shown in fig. 2, the polarization directions of adjacent unit cells are mutually orthogonal, the size of the unit cell is the same as the pixel size on the transmission type display panel, in the embodiment, the size of the unit cell of the cross polarizing plate is the same as the pixel size of the transmission type display panel, and both are 0.6 mm;
the orthogonal polaroid modulates incident unpolarized light into polarized light of which adjacent units are orthogonal to each other;
the polarization converter realizes the change of the polarization direction of the incident polarized light through voltage switching, and in the embodiment, a TN liquid crystal box is adopted as the polarization converter;
the transmissive display panel, in this embodiment, adopts a liquid crystal panel as the transmissive display panel, which modulates the polarized light intensity in the horizontal direction, and displays two parallax images on the transmissive display panel, the arrangement of the two parallax images is as shown in fig. 3, and the pixels of the parallax images 1 and 2 are arranged at intervals in the horizontal and vertical directions;
the orthogonal polaroid, the polarized light converter and the transmission type display panel are closely arranged;
the semi-transparent semi-reflecting mirror has a semi-transparent semi-reflecting function on incident light, light from the transmission type display panel enters human eyes after being reflected by the semi-transparent semi-reflecting mirror, and light from the real world enters human eyes after being transmitted by the semi-transparent semi-reflecting mirror, so that superimposed display of a virtual image and a real environment is realized.
Light rays emitted by a point light source are converged by a lens, and then polarized by an orthogonal polarizer to obtain polarized light which is orthogonal to each other of adjacent units, a polarized light converter is used for rapidly switching the incident polarized light, the polarization direction of the incident polarized light is changed in a time sequence, at a certain moment, the orthogonal polarized light incident on a transmission type display panel is only horizontal polarized light, namely, half of the light rays of a unit cell can irradiate a parallax image 1 through the transmission type display panel, a convergence point is formed at the pupil of human eyes, and the parallax image 1 is clearly imaged on a retina; at the next moment, the vertically polarized light, that is, the light of the other half of the cells, passes through the transmissive display panel, illuminates the parallax image 2, forms the same convergence point at the pupil of the human eye, and clearly images the parallax image 2 on the retina.
In this embodiment, the switching frequency of the polarization converter is 120HZ, which satisfies the persistence effect of human eyes, and a single eye obtains two parallax images, thereby realizing retina imaging from multiple viewpoints, providing a more accurate focusing cue for a viewer, and obtaining a more real visual experience.
The invention projects two parallax images onto the retina of human eyes in time sequence through the orthogonal polaroid and the polarized light converter to form a monocular and multiview stereo display effect, provides richer depth clues for a monocular, and simultaneously realizes the effect of superimposing and displaying the virtual stereo image and a real environment.
Claims (4)
1. The device is characterized by comprising a point light source, a lens, an orthogonal polarizer, a polarized light converter, a transmission type display panel and a semi-transparent and semi-reflective mirror, wherein light rays emitted by the point light source are converged by the lens and then sequentially pass through the orthogonal polarizer, the polarized light converter, the transmission type display panel and the semi-transparent and semi-reflective mirror, a convergence point is formed in the center of a pupil of a human eye, and finally an image is formed on the retina of the human eye.
2. The cross-polarizer-based hyper-multi-viewpoint retinal imaging device according to claim 1, wherein the point light source is located at the frontmost end of the device, providing a backlight for the entire device; the lens converges the light emitted by the point light source to generate a convergence point; the orthogonal polaroid is arranged in a two-dimensional matrix by unit cells with mutually orthogonal polarization directions, the polarization directions of adjacent unit cells are mutually orthogonal, and the size of each unit cell is the same as the size of a pixel on the transmission type display panel; the orthogonal polaroid modulates incident unpolarized light into polarized light of which adjacent units are orthogonal to each other; the polarized light converter realizes the change of the polarization direction of incident polarized light through voltage switching; the transmission type display panel modulates the polarized light brightness in a certain polarization direction, two parallax images are displayed on the transmission type display panel, and pixels of the parallax images 1 and 2 are arranged at intervals in the horizontal and vertical directions; the orthogonal polaroid, the polarized light converter and the transmission type display panel are closely arranged; the half-transmitting and half-reflecting mirror has a half-transmitting and half-reflecting function on incident light, light rays from the transmission type display panel enter human eyes after being reflected by the half-transmitting and half-reflecting mirror, and light rays from the real world enter the human eyes after being transmitted by the half-transmitting and half-reflecting mirror.
3. The device as claimed in claim 1, wherein the light emitted from the point light source is converged by the lens, and then polarized by the orthogonal polarizer to obtain polarized lights orthogonal to each other in adjacent cells, the polarized light converter rapidly switches the incident polarized lights, and changes the polarization direction of the incident polarized lights in time sequence, at a certain moment, the orthogonal polarized lights incident on the transmissive display panel have only one direction of polarized lights, that is, half of the cells of light can pass through the transmissive display panel to illuminate the parallax image 1, and a convergence point is formed at the pupil of human eye, so as to clearly image the parallax image 1 on the retina; at the next moment, polarized light in the other direction, namely light of the other half of the unit cells, passes through the transmission type display panel, illuminates the parallax image 2, the same convergence point is formed at the pupil of the human eye, and the parallax image 2 is clearly imaged on the retina.
4. The device as claimed in claim 1, wherein the switching frequency of the polarization converter satisfies the persistence of vision effect of human eyes, and a single eye obtains two parallax images to realize the retinal imaging of ultra-multiple viewpoints, thereby providing more accurate focusing clues for viewers and obtaining more real visual experience.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010109864.2A CN111142264A (en) | 2020-02-23 | 2020-02-23 | Super-multi-viewpoint retina imaging device based on orthogonal polaroid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010109864.2A CN111142264A (en) | 2020-02-23 | 2020-02-23 | Super-multi-viewpoint retina imaging device based on orthogonal polaroid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111142264A true CN111142264A (en) | 2020-05-12 |
Family
ID=70527810
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010109864.2A Pending CN111142264A (en) | 2020-02-23 | 2020-02-23 | Super-multi-viewpoint retina imaging device based on orthogonal polaroid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111142264A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115128811A (en) * | 2022-06-20 | 2022-09-30 | 中山大学 | Near-to-eye display module based on orthogonal characteristic pixel block |
-
2020
- 2020-02-23 CN CN202010109864.2A patent/CN111142264A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115128811A (en) * | 2022-06-20 | 2022-09-30 | 中山大学 | Near-to-eye display module based on orthogonal characteristic pixel block |
| CN115128811B (en) * | 2022-06-20 | 2024-01-12 | 中山大学 | Near-to-eye display module based on orthogonal characteristic pixel blocks |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Reichelt et al. | Depth cues in human visual perception and their realization in 3D displays | |
| CN109445107B (en) | Augmented reality display device capable of monocular stereoscopic display and display method thereof | |
| CN107247333B (en) | Display system capable of switching display modes | |
| WO2011017485A2 (en) | 3d autostereoscopic display with true depth perception | |
| JPH09105885A (en) | Head mount type stereoscopic image display device | |
| WO2012175939A1 (en) | Apparatus and method for displaying images | |
| Brar et al. | Laser-based head-tracked 3D display research | |
| Xia et al. | Towards a switchable AR/VR near-eye display with accommodation-vergence and eyeglass prescription support | |
| KR20120010644A (en) | Super multi-view 3D display apparatus | |
| CN106940483B (en) | A kind of light field display device and display methods | |
| CN211857063U (en) | Super-multi-viewpoint retina imaging device based on orthogonal polaroid | |
| WO2023173907A1 (en) | Imaging apparatus and method, and augmented or virtual reality device | |
| KR20040058843A (en) | Stereoscopic 3-D Display Apparatus | |
| Abileah | 3‐D displays—Technologies and testing methods | |
| JP6026637B2 (en) | 3D image visualization system | |
| JP3072866B2 (en) | 3D stereoscopic image display device | |
| CN113341567B (en) | Double-focal-plane optical waveguide near-to-eye display optical system | |
| CN111142264A (en) | Super-multi-viewpoint retina imaging device based on orthogonal polaroid | |
| CN110174767B (en) | Super-multi-view near-to-eye display device | |
| JPWO2005088386A1 (en) | Stereoscopic display device and stereoscopic display method | |
| CN209858850U (en) | Super-multi-viewpoint near-to-eye display device | |
| JP3790226B2 (en) | 3D display device | |
| JP3756481B2 (en) | 3D display device | |
| JP3825414B2 (en) | 3D display device | |
| CN110989175B (en) | Resolution-enhanced light field display based on polarizer holographic grating |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20200512 |
|
| WD01 | Invention patent application deemed withdrawn after publication |