CN112904556A - Holographic display and projection intelligent glasses optical scheme - Google Patents
Holographic display and projection intelligent glasses optical scheme Download PDFInfo
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- CN112904556A CN112904556A CN201911137357.3A CN201911137357A CN112904556A CN 112904556 A CN112904556 A CN 112904556A CN 201911137357 A CN201911137357 A CN 201911137357A CN 112904556 A CN112904556 A CN 112904556A
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- 230000003287 optical effect Effects 0.000 title claims abstract description 31
- 239000011521 glass Substances 0.000 title claims abstract description 14
- 238000003384 imaging method Methods 0.000 claims description 12
- 230000000007 visual effect Effects 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 1
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/017—Head mounted
- G02B27/0172—Head mounted characterised by optical features
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/017—Head mounted
- G02B27/0172—Head mounted characterised by optical features
- G02B2027/0174—Head mounted characterised by optical features holographic
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/017—Head mounted
- G02B2027/0178—Eyeglass type
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Abstract
The invention provides an optical scheme of holographic display and projection intelligent glasses, which realizes binocular holographic near-to-eye display and external projection in a simple mode without more special parts.
Description
Technical Field
The invention relates to an optical scheme of intelligent glasses, in particular to an optical scheme of holographic display and projection intelligent glasses.
Background
The existing intelligent glasses optical scheme has single function and low integration level, and can only allow a person wearing the intelligent glasses to see images and can not allow people without the intelligent glasses to see the images.
Disclosure of Invention
The invention provides an optical scheme of holographic display and projection intelligent glasses, which realizes binocular holographic near-to-eye display and external projection in a simple mode without more special parts.
The invention is realized by the following technical scheme:
the optical scheme of the holographic display and projection intelligent glasses comprises a spatial light modulator, a projection light path, a display light path, an imaging lens and a binocular light guide sheet.
The following is a detailed description of each section:
the spatial light modulator: a transmissive spatial light modulator or a reflective spatial light modulator or a scanning galvanometer may be used.
Projection light path: for external projection, the picture can be projected on the surface of any object.
Display light path: the method is used for near-eye display and conducts virtual image light to the display in front of eyes.
An imaging lens: is a set of imaging lenses for collimating and magnifying light rays into a virtual image at a distance.
Binocular optical waveguide sheet: the virtual image light is transmitted to the binocular position to be displayed, and meanwhile observation of natural light is not influenced.
The working principle of the invention is as follows:
an optical scheme of holographic display and projection intelligent glasses comprises a display optical path and a projection optical path.
The display optical path is an optical path of light of the display section from generation to propagation to human eyes, and the projection optical path is an optical path of light of the projection section from generation to projection to the projection surface.
When the independent display, light source light shines on spatial light modulator, spatial light modulator generates in real time and shows light all the way, it is the little hologram of inclusion degree of depth information to show light, the light of little hologram forms the virtual image in a distant place through imaging lens, two visual angles of virtual image light branch left and right couple respectively get into two optical waveguide pieces, two optical waveguide pieces are to two eyes direction conduction light, the image at two visual angles of output position output of optical waveguide piece at last, no matter how much the human eye interpupillary distance can both observe the hologram of taking the degree of depth information this moment.
When the projection is carried out independently, light source light irradiates on the spatial light modulator, the spatial light modulator generates one path of projection light in real time, and the projection light passes through a projection light path and finally generates a projection image on a projection plane.
When the light source light irradiates on the spatial light modulator during simultaneous display and projection, the spatial light modulator generates two paths of light in real time, wherein one path of light is display light, the other path of light is projection light, the actual contents of projection and display can be different, and the display light and the projection light respectively enter the display light path and the projection light path to be displayed or projected. Since the spatial light modulator or the scanning galvanometer distributes limited hardware resources to the display and the projection in real time, the image definition is a little lower than that of the display or the projection when the display and the projection are simultaneously started.
Drawings
Fig. 1 and 2 are schematic diagrams of the composition structure of the present invention.
Detailed Description
The technical scheme of the invention is further described in the following with the accompanying drawings.
Fig. 1 is a structure employing two light sources.
In fig. 1, 1 is a spatial light modulator using one transmissive modulator, 2 is an imaging lens, 3 is one of optical waveguide sheets, 4 is an input area of the optical waveguide sheet, and 5 is an output area of the optical waveguide sheet. 6 is the direction of the display light source, note that this direction is not fixed in the plane of the paper, but is at an angle to the plane of the paper. And 7 is the projection light source direction, which is also at an angle to the plane of the paper, so that the actual light does not pass through the imaging lens to the spatial light modulator.
During projection, a projection light source is turned on, light rays irradiate on the spatial light modulator from the direction of an arrow 7, the spatial light modulator generates projection light rays in real time, and the projection light rays finally generate a projection picture at the position of a projection plane 8.
When the micro-hologram is displayed, the display light source is started, light rays irradiate the spatial light modulator from the direction of the pointed end 6, the spatial light modulator generates a micro-hologram for displaying in real time, and the light rays of the micro-hologram pass through the imaging lens to generate an amplified virtual image in a far place. Behind the imaging lens are two optical waveguide sheets which receive virtual image light from two viewing angles from the left and right (at light input regions 4 of the sheet) and conduct to a binocular position (at light output regions 5 of the sheet). The stereoscopic hologram with depth is now viewable from two perspectives by the binoculars.
Fig. 2 is a structure employing one light source.
In fig. 2, 1 is a transmissive spatial light modulator, 2 is an imaging lens, 3 is one of optical waveguide sheets, 4 is an input region of the optical waveguide sheet, 5 is an output region of the optical waveguide sheet, 6 is a direction of a light source, 7 is a light direction entering a display optical path portion, 9 is a mirror below the spatial light modulator, and 8 is a projection receiving surface.
In this configuration, the light source is directed onto the spatial light modulator from the direction of arrow 6 during display and projection, noting that this direction is not fixed in the plane of the paper, but is at an angle to the plane of the paper.
The light rays generate two paths of light rays after passing through the spatial light modulator, and one path of light rays reaches the imaging lens 2 along the direction of an arrow 7 and enters a display light path to form a display image.
One path of light irradiates on the reflector 9 and reaches a projection light path, and attention is paid to that the direction of the arrow 7 and the reflector 9 are not in the same plane, so that the light reflected by the reflector 9 does not irradiate on the spatial light modulator again, and the reflected light irradiates on the projection receiving surface 8 to form a projection image.
The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various simplifications and extensions made by those skilled in the art to the technical solution of the present invention should fall within the protection scope defined by the claims of the present invention without departing from the spirit of the present invention.
Claims (3)
1. The utility model provides a holographic display and projection intelligence glasses optics scheme, includes spatial light modulator, projection light path, shows the light path, imaging lens, binocular optical waveguide piece, its characterized in that: the display and the projection share one spatial light modulator, the two light paths of a projection light path and a display light path are divided, the projection light path is used during the independent projection, and the spatial light modulator generates projection light in real time for external projection; when the display is carried out independently, the display light path is used, and the spatial light modulator generates a display hologram in real time for near-to-eye display; when projection and display are used simultaneously, the spatial light modulator generates two paths of light rays in real time, one light ray is used for displaying and entering the display light path, the other light ray is used for projecting and entering the projection light path, the actual contents of projection and display can be different, and the definition of the generated two paths of light rays is lower than that of the generated one path of light rays.
2. The utility model provides a holographic display and projection intelligence glasses optics scheme which characterized in that: when the near-eye display is started, the spatial light modulator generates a micro-hologram of the display part, light rays of the micro-hologram form a remote virtual image through the imaging lens, the virtual image light rays are divided into a left visual angle and a right visual angle and coupled to enter the two optical waveguide sheets, the two optical waveguide sheets transmit light rays to the two eye directions, and finally, images of the two visual angles are output at the output position of the optical waveguide sheets to be used for binocular observation.
3. The utility model provides a holographic display and projection intelligence glasses optics scheme which characterized in that: the projection light path and the display light path can be generated by using one light source or two light sources, when one light source is used, the spatial light modulator only generates one path of light during independent display or projection, when the display and the projection are simultaneously started, the spatial light modulator generates two paths of light, the directions and the intensities of the two paths of light are different and are respectively used for display and projection, because the directions of the display light and the projection light are different and are generally opposite, a reflecting mirror can be additionally arranged on one light path to adjust the light path to a required direction, when one light source is used, the scanning galvanometer can be used for replacing the spatial light modulator, and a specific scanning algorithm is used for replacing a hologram algorithm of the spatial light modulator; when two light sources are used, the two light sources with different intensity can be used for projection or display respectively, the respective light sources are independently started during independent display or projection, when the display and the projection are simultaneously started, the two light sources are simultaneously started, a part of area of the shared spatial light modulator is used for generating a displayed hologram, and the other part of area is used for generating a projection hologram.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911137357.3A CN112904556A (en) | 2019-11-19 | 2019-11-19 | Holographic display and projection intelligent glasses optical scheme |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911137357.3A CN112904556A (en) | 2019-11-19 | 2019-11-19 | Holographic display and projection intelligent glasses optical scheme |
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| Publication Number | Publication Date |
|---|---|
| CN112904556A true CN112904556A (en) | 2021-06-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911137357.3A Pending CN112904556A (en) | 2019-11-19 | 2019-11-19 | Holographic display and projection intelligent glasses optical scheme |
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|---|---|
| CN (1) | CN112904556A (en) |
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2019
- 2019-11-19 CN CN201911137357.3A patent/CN112904556A/en active Pending
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Application publication date: 20210604 |