CN116736415A - Optical waveguide lens - Google Patents
Optical waveguide lens Download PDFInfo
- Publication number
- CN116736415A CN116736415A CN202010992431.6A CN202010992431A CN116736415A CN 116736415 A CN116736415 A CN 116736415A CN 202010992431 A CN202010992431 A CN 202010992431A CN 116736415 A CN116736415 A CN 116736415A
- Authority
- CN
- China
- Prior art keywords
- substrate
- strip
- optical waveguide
- shaped grooves
- sides
- 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.)
- Withdrawn
Links
- 230000003287 optical effect Effects 0.000 title claims abstract description 49
- 239000000758 substrate Substances 0.000 claims abstract description 90
- 238000003491 array Methods 0.000 claims description 9
- 230000009467 reduction Effects 0.000 abstract description 4
- 238000003384 imaging method Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000012779 reinforcing material Substances 0.000 description 2
- 239000012780 transparent material Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000010147 laser engraving Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000001259 photo etching Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/10—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
- G02B2003/0093—Simple or compound lenses characterised by the shape
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Integrated Circuits (AREA)
Abstract
The invention relates to an optical waveguide lens, which comprises a substrate, wherein a plurality of strip-shaped grooves are respectively arranged on two sides of the substrate, so that the substrate forms an upper optical waveguide array and a lower optical waveguide array, the inner walls of the strip-shaped grooves are provided with reflecting surfaces, and the reflecting surfaces of the inner walls of the strip-shaped grooves on the two sides of the substrate are mutually perpendicular or are not orthogonally arranged. According to the present invention, simplification of the structure and reduction of the cost can be achieved, stray light can be eliminated, and the present invention can be made very thin and can be widely applied to various scenes.
Description
Technical Field
The invention relates to the field of optics, in particular to an optical waveguide lens.
Background
With the development of imaging display technology, the requirements on imaging characteristics are continuously increasing. The air imaging technology is that light emitted from an object to be projected, which is disposed on one side of an optical lens, is specularly reflected in the optical lens and simultaneously transmitted through the optical lens plane, so that a mirror image of the object to be projected is imaged as a real image in a space on the other side of the optical lens, and by forming an image of an object in air, people can see the image of the object without assistance such as VR glasses, thereby providing a strong visual shock effect, and receiving attention and pursuit of more people. However, the conventional optical waveguide lens has a disadvantage that it is limited by the field of view and aperture, and unwanted multiple reflections occur to form disturbing stray light, and the structure thereof needs to be arranged or assembled with high accuracy, which results in complicating the structure and increasing the cost.
Disclosure of Invention
The invention aims to improve the defects of the prior art, provide a light-emitting diode capable of realizing simplification of a structure, reduction of cost, elimination of stray light, and realization of very thin manufacture, and solve the defects of the prior art.
In order to achieve the above purpose, the technical scheme of the invention is as follows:
the utility model provides an optical waveguide lens, includes a base plate, the base plate both sides are equipped with a plurality of rectangular shape recesses respectively, make this base plate form two sets of optical waveguide arrays about, rectangular shape recess inner wall is equipped with the reflecting surface, the reflecting surface of rectangular shape recess inner wall on base plate both sides is mutually perpendicular or non-orthogonal arrangement.
The strip-shaped grooves on the substrate are vertical or nearly vertical or one surface is vertical to the other surface and is inclined to the surface of the substrate.
The substrate is transparent or opaque, the depths of the strip-shaped grooves on the two sides of the substrate are equal or unequal, and the bottoms of the strip-shaped grooves on the two sides of the substrate are communicated or not communicated.
The utility model provides an optical waveguide lens, includes a base plate, the base plate both sides are equipped with a plurality of rectangular shape recesses or boss respectively, make this base plate form two sets of optical waveguide arrays about rectangular shape recess inner wall or boss both sides face are equipped with the reflecting surface respectively, the reflecting surface of rectangular shape recess inner wall or boss both sides face of base plate both sides is mutually perpendicular or non-orthogonal arrangement.
The utility model provides an optical waveguide lens, includes a base plate, base plate one side is equipped with a plurality of rectangular shape recesses be equipped with a plurality of holes in rectangular shape recess bottom, make this base plate form two sets of optical waveguide arrays about rectangular shape recess inner wall and the inner wall in recess bottom hole are equipped with the reflecting surface respectively, the reflecting surface of rectangular shape recess inner wall of base plate one side and the inner wall reflecting surface mutually perpendicular or non-orthogonal arrangement in recess bottom hole.
The holes at the bottoms of the strip-shaped grooves are square or rectangular or random, and the holes at the bottoms of the strip-shaped grooves are through holes or non-through holes.
The elongated projections or grooves or holes on the substrate are perpendicular or nearly perpendicular or one side is perpendicular to the other side and is inclined to the surface of the substrate.
The substrate is transparent or opaque, the depths of the strip-shaped grooves on the two sides of the substrate are equal or unequal, the depths of the holes on the bottom of the strip-shaped grooves are equal or unequal, and the bottoms of the strip-shaped grooves on the two sides of the substrate are communicated or not communicated.
The strip-shaped grooves or bosses or holes on the substrate are arranged in parallel or obliquely relative to the side surface of the substrate.
The other surfaces of the reflecting surfaces are non-reflecting surfaces or are all provided with reflecting surfaces on the inner wall of the strip-shaped groove or the two side surfaces of the boss or the inner wall of the hole on the substrate.
Compared with the prior art, the optical waveguide lens has the following beneficial effects:
the utility model provides an optical waveguide lens, includes a base plate, the base plate both sides are equipped with a plurality of rectangular shape recesses respectively, make this base plate form two sets of optical waveguide arrays about, rectangular shape recess inner wall is equipped with the reflecting surface, the reflecting surface of rectangular shape recess inner wall on base plate both sides is mutually perpendicular or non-orthogonal arrangement. According to the present invention, simplification of the structure and reduction of the cost can be achieved, stray light can be eliminated, and the present invention can be made very thin and can be widely applied to various scenes.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
FIG. 1 is a schematic structural diagram of embodiment 1 of the present invention;
FIG. 2 is another schematic structure of embodiment 1 of the present invention;
FIG. 3 is a schematic view showing a structure in which one surface of the elongated groove of the embodiment 1 of the present invention is inclined to the surface of the substrate perpendicular to the other surface;
FIG. 4 is a schematic diagram illustrating a structure of reflecting surfaces perpendicular to each other according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of an internal optical path according to an embodiment of the present invention;
FIG. 6 is an imaging schematic of an embodiment of the present invention;
FIG. 7 is a schematic diagram of another embodiment 2 of the present invention;
FIG. 8 is a schematic diagram of another embodiment 3 of the present invention;
fig. 9 is a schematic view showing a structure in which one surface of the hole at the bottom of the elongated groove is inclined to the surface of the substrate perpendicular to the other surface in embodiment 3 of the present invention.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
Referring to fig. 1, 2, 3 and 4, an optical waveguide lens of the embodiment 1 of the present invention includes a substrate 1, a plurality of elongated grooves 2 are disposed on one surface of the substrate 1, the depth of the elongated grooves 2 is half of the thickness of the substrate 1, a plurality of elongated grooves 2 are disposed on the other surface of the substrate 1, the depth of the elongated grooves 2 is half of the thickness of the substrate 1, the elongated grooves 2 on both surfaces of the substrate 1 are orthogonally disposed, so that the surfaces of the substrate 1, which are not contacted with the bottoms of the elongated grooves 2, form an upper optical waveguide array and a lower optical waveguide array, one surface of the elongated grooves 2 on both surfaces of the substrate 1 is inclined to the surface of the substrate 1, the inner walls of the elongated grooves 2 on both surfaces of the substrate 1 are respectively provided with reflective surfaces 3, and the reflective surfaces 3 of the inner walls of the elongated grooves 2 on both surfaces of the substrate 1 are mutually perpendicular. Any scattered light from the point light source, the planar light source and the stereo light source, after passing through the lens with the special structure, refocuses and images at the same position on the other side of the lens, see fig. 5 and 6.
The reflecting surfaces 3 on the inner walls of the strip-shaped grooves 2 on the two sides of the substrate 1 are used for carrying out total reflection on light rays. The smaller the distance between the strip-shaped grooves 2 and the strip-shaped grooves 2 in the substrate 1, the better, the strip-shaped grooves 2 are arranged in parallel relative to the side surface of the substrate, and the length and the width of the strip-shaped grooves 2 on the two sides of the substrate 1 are the same.
The two sides of the substrate 1 are processed into the strip-shaped grooves 2 by processing methods such as laser engraving and photoetching, the strip-shaped grooves 2 can be processed in the frame according to the requirement, the substrate 1 with the strip-shaped grooves 2 can be processed at one time by other processing techniques, the depths of the strip-shaped grooves 2 on the two sides of the substrate 1 can be equal or unequal according to the requirement, and the bottoms of the grooves are communicated or not communicated. The number of the elongated grooves 2 is not particularly limited, and the surface of the elongated grooves 2 perpendicular to the other surface is inclined to the surface of the substrate 1 (see fig. 3), and the other surface of the grooves 2 perpendicular to the surface provided with the reflecting surface is a non-reflecting surface, so that the multiple reflection light reflected by 3 times or more can be reduced or removed, and the stray light can be effectively eliminated. A plurality of reflection surfaces exist in the optical waveguide, and unwanted multiple reflections occur, resulting in interference stray light. The substrate 1 is made of a transparent material or an opaque material, for example, a light shielding treatment is performed on a portion of the transparent material substrate 1 other than the portion where the elongated grooves 2 are formed, and a reflective film is coated on the surface perpendicular to the inner wall of each elongated groove 2 on both sides of the substrate 1 or a reflective surface is formed by another process. In addition, the reflection surfaces of the inner walls of the strip-shaped grooves on the two sides of the substrate can be arranged in a non-orthogonal mode according to requirements, aberration can be generated under the condition that the reflection surfaces are arranged in the non-orthogonal mode, and two real images can be imaged. A transparent reinforcing material, not shown, formed in a thin plate shape may be provided on the upper and lower surfaces of the substrate 1, and the frame may be cut or cut to a desired size as required in the finished product with the transparent reinforcing material. In the present embodiment, as an example, thousands to tens of thousands of such elongated grooves are provided on a 5CM square substrate.
Fig. 5 shows the working principle of the light path:
in the micrometer structure, any optical signal is orthogonally decomposed by using a reflecting layer mirror surface structure which is orthogonal to each other, an original signal is decomposed into two paths of mutually orthogonal signals of a signal X and a signal Y, the signal X is totally reflected on the mirror surface according to the same reflection angle as the incident angle in a first physical layer, at the moment, the signal Y is kept parallel to the first physical layer, after passing through the first physical layer, the signal Y is totally reflected on the mirror surface according to the same reflection angle as the incident angle in a second physical layer, and the reflected optical signal formed by the reflected signal Y and the signal X is in mirror symmetry with the original optical signal. Therefore, the light rays in any direction can be mirror symmetrical through the lens, the divergent light of any light source can refocus and image at a symmetrical position through the lens, the imaging distance is equal to the distance between the holographic reflecting layer and the light source, the image is in the air, a specific carrier is not needed, and the real image is directly imaged in the air. Therefore, the image in the space seen by the user is the light emitted by the object actually present.
After the original light source passes through the optical waveguide lens structure, the above process is performed on the optical waveguide lens structure, the incident angle after focusing and imaging is respectively beta 1, beta 2, beta 3, beta 4 …; the lenses are combined together to focus all the light beams guided out by the lenses towards a specified point, so that people can watch aerial images within a 360-degree range, and if the size of the plate is increased, a larger imaging distance can be realized, and the field of view is increased.
In another embodiment 2, referring to fig. 7, an optical waveguide lens includes a transparent substrate 1, a plurality of elongated protrusions 2 are respectively disposed on two sides of the transparent substrate 1, the elongated protrusions 2 on two sides of the transparent substrate 1 are orthogonally arranged, so that the transparent substrate 1 forms an upper group of optical waveguide arrays and a lower group of optical waveguide arrays, one side of the elongated protrusions 2 on two sides of the transparent substrate 1 is perpendicular to the other side of the elongated protrusions 2, the two sides of the elongated protrusions 2 on two sides of the transparent substrate 1 are respectively provided with a reflective surface 3, and the reflective surfaces 3 on two sides of the elongated protrusions 2 on two sides of the transparent substrate 1 are perpendicular to each other. Any scattered light from the point light source, the planar light source and the stereo light source, after passing through the lens with the special structure, refocuses and images at the same position on the other side of the lens, see fig. 5 and 6. In this embodiment, there may be a configuration in which a plurality of elongated grooves are provided on one surface of the transparent substrate 1, and a plurality of elongated bosses are provided on the other surface of the transparent substrate 1. Other portions of the present embodiment are the same as those of the above embodiment, and will not be described again.
Referring to fig. 8 and 9, another embodiment 3 of an optical waveguide lens is shown, and includes a substrate 1, wherein one side of the substrate 1 is provided with a plurality of elongated grooves 2, a plurality of square holes 3 are provided at the bottom of the elongated grooves 2, the elongated grooves 2 at one side of the substrate 1 are arranged orthogonal to the square holes 3 at the bottom of the grooves 2, so that the substrate 1 forms an upper group of optical waveguides and a lower group of optical waveguides, one side of the elongated grooves 2 at one side of the substrate 1 and the square holes 3 at the bottom of the grooves 2 are inclined to the surface of the substrate 1 at another side perpendicular to the other side, reflection surfaces 4 are respectively provided at the inner walls of the elongated grooves 2 and the inner walls of the square holes 3 at the bottom of the grooves 2, and the reflection surfaces 4 at the inner walls of the elongated grooves 2 at one side of the substrate 1 are mutually perpendicular to the reflection surfaces 4 at the inner walls of the square holes 3 at the bottom of the grooves 2. Any scattered light from the point light source, the planar light source and the stereo light source, after passing through the lens with the special structure, refocuses and images at the same position on the other side of the lens, see fig. 5 and 6. In this embodiment, the hole 3 at the bottom of the elongated groove 2 is square or rectangular, and any shape may be adopted as long as the light reflected by the reflecting surface is transmitted through the hole, the hole 3 at the bottom of the elongated groove 2 may be a through hole or not, and the depths of the elongated groove 2 and the hole 3 at the bottom of the groove 2 are equal or unequal. Other portions of the present embodiment are the same as those of the above embodiment, and will not be described again.
Preferably, one surface of the elongated boss or groove or the hole at the bottom of the groove on the substrate 1 is perpendicular to the other surface and is inclined to the surface of the substrate 1.
Preferably, the substrate 1 is opaque, the depths of the long strip-shaped grooves on the two sides of the substrate 1 are equal, the depths of the holes on the long strip-shaped grooves on the two sides of the substrate 1 are equal, the bottoms of the long strip-shaped grooves on the two sides of the substrate 1 are communicated, and the holes on the bottoms of the long strip-shaped grooves are through holes.
Preferably, the elongated grooves or lands or holes in the substrate 1 are arranged parallel to the substrate side.
Preferably, the inner wall of the elongated groove or the two sides of the boss or one side of the inner wall of the hole on the substrate 1 is provided with a reflecting surface, and the other side is provided with a non-reflecting surface.
Preferably, the lengths and widths of the elongated grooves or bosses or holes on the two sides of the substrate 1 are the same.
Preferably, the width of the elongated grooves or bosses or holes on the two sides of the substrate 1 is reduced from the center to the edge of the substrate.
Preferably, the substrate 1 is a planar or wedge-shaped surface.
Compared with the prior art, the optical waveguide lens has the following beneficial effects:
the utility model provides an optical waveguide lens, includes a base plate, the base plate both sides are equipped with a plurality of rectangular shape recesses respectively, make this base plate form two sets of optical waveguide arrays about, rectangular shape recess inner wall is equipped with the reflecting surface, the reflecting surface of rectangular shape recess inner wall on base plate both sides is mutually perpendicular or non-orthogonal arrangement. According to the present invention, simplification of the structure and reduction of the cost can be achieved, stray light can be eliminated, and the present invention can be made very thin and can be widely applied to various scenes.
The foregoing is only a partial embodiment of the present invention, and it should be noted that it will be apparent to those skilled in the art that modifications and adaptations can be made without departing from the principles of the present invention, and such modifications and adaptations are intended to be comprehended within the scope of the present invention.
Claims (10)
1. The optical waveguide lens is characterized by comprising a substrate, wherein a plurality of strip-shaped grooves are respectively formed in two sides of the substrate, so that the substrate forms an upper optical waveguide array and a lower optical waveguide array, reflecting surfaces are arranged on the inner walls of the strip-shaped grooves, and the reflecting surfaces of the inner walls of the strip-shaped grooves in two sides of the substrate are mutually perpendicular or are not orthogonally arranged.
2. An optical waveguide lens according to claim 1, wherein: the strip-shaped grooves on the substrate are vertical or nearly vertical or one surface is vertical to the other surface and is inclined to the surface of the substrate.
3. An optical waveguide lens according to claim 1, wherein: the substrate is transparent or opaque, the depths of the strip-shaped grooves on the two sides of the substrate are equal or unequal, and the bottoms of the strip-shaped grooves on the two sides of the substrate are communicated or not communicated.
4. The utility model provides a light waveguide lens, its characterized in that includes a base plate, the base plate both sides are equipped with a plurality of rectangular shape recesses or boss respectively, make this base plate form two sets of light waveguide arrays about, rectangular shape recess inner wall or boss both sides face are equipped with the reflecting surface respectively, the reflecting surface of rectangular shape recess inner wall or boss both sides face on base plate both sides is mutually perpendicular or non-orthogonal arrangement.
5. The utility model provides a light waveguide lens, its characterized in that includes a base plate, base plate one side is equipped with a plurality of rectangular shape recesses be equipped with a plurality of holes in rectangular shape recess bottom, make this base plate form two sets of light waveguide arrays about rectangular shape recess inner wall and recess bottom hole's inner wall is equipped with the reflecting surface respectively, the reflecting surface of rectangular shape recess inner wall of base plate one side and the inner wall reflecting surface mutually perpendicular or the non-orthogonal arrangement of recess bottom hole.
6. An optical waveguide lens according to claim 5, wherein: the holes at the bottoms of the strip-shaped grooves are square or rectangular or random, and the holes at the bottoms of the strip-shaped grooves are through holes or non-through holes.
7. An optical waveguide lens according to claim 4 or 5, wherein: the elongated projections or grooves or holes on the substrate are perpendicular or nearly perpendicular or one side is perpendicular to the other side and is inclined to the surface of the substrate.
8. An optical waveguide lens according to claim 4 or 5, wherein: the substrate is transparent or opaque, the depths of the strip-shaped grooves on the two sides of the substrate are equal or unequal, the depths of the holes on the bottom of the strip-shaped grooves are equal or unequal, and the bottoms of the strip-shaped grooves on the two sides of the substrate are communicated or not communicated.
9. An optical waveguide lens according to claim 1, 4 or 5, wherein: the strip-shaped grooves or bosses or holes on the substrate are arranged in parallel or obliquely relative to the side surface of the substrate.
10. An optical waveguide lens according to claim 1, 4 or 5, wherein: the other surfaces of the reflecting surfaces are non-reflecting surfaces or are all provided with reflecting surfaces on the inner wall of the strip-shaped groove or the two side surfaces of the boss or the inner wall of the hole on the substrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010992431.6A CN116736415A (en) | 2020-09-21 | 2020-09-21 | Optical waveguide lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010992431.6A CN116736415A (en) | 2020-09-21 | 2020-09-21 | Optical waveguide lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116736415A true CN116736415A (en) | 2023-09-12 |
Family
ID=87911943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010992431.6A Withdrawn CN116736415A (en) | 2020-09-21 | 2020-09-21 | Optical waveguide lens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116736415A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030223722A1 (en) * | 2002-05-31 | 2003-12-04 | Matsushita Electric Industrial Co., Ltd. | Optical element and method for producing the same |
| CN1938634A (en) * | 2003-11-18 | 2007-03-28 | 莫林技术有限公司 | Variable optical arrays and variable manufacturing methods |
| KR20110134297A (en) * | 2010-06-07 | 2011-12-14 | 유브라이트 옵트로닉스 코포레이션 | Light guide film |
| CN107193125A (en) * | 2017-07-26 | 2017-09-22 | 安徽省东超科技有限公司 | A kind of optical flat structure for realizing air imaging |
| TWI654446B (en) * | 2018-06-07 | 2019-03-21 | 財團法人國家實驗研究院 | Floating imaging display device |
| CN212276015U (en) * | 2020-09-21 | 2021-01-01 | 郭生文 | Optical waveguide lens |
-
2020
- 2020-09-21 CN CN202010992431.6A patent/CN116736415A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030223722A1 (en) * | 2002-05-31 | 2003-12-04 | Matsushita Electric Industrial Co., Ltd. | Optical element and method for producing the same |
| CN1938634A (en) * | 2003-11-18 | 2007-03-28 | 莫林技术有限公司 | Variable optical arrays and variable manufacturing methods |
| KR20110134297A (en) * | 2010-06-07 | 2011-12-14 | 유브라이트 옵트로닉스 코포레이션 | Light guide film |
| CN107193125A (en) * | 2017-07-26 | 2017-09-22 | 安徽省东超科技有限公司 | A kind of optical flat structure for realizing air imaging |
| TWI654446B (en) * | 2018-06-07 | 2019-03-21 | 財團法人國家實驗研究院 | Floating imaging display device |
| CN212276015U (en) * | 2020-09-21 | 2021-01-01 | 郭生文 | Optical waveguide lens |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5074649A (en) | Plate with lens array | |
| KR102544297B1 (en) | Device for generating patterned lighting | |
| KR101067941B1 (en) | Optical system | |
| JP5085631B2 (en) | Optical imaging apparatus and optical imaging method using the same | |
| US10871657B2 (en) | Floating image display | |
| CN212276015U (en) | Optical waveguide lens | |
| US10908454B2 (en) | Backlight module and display device | |
| CN111766707A (en) | Two-dimensional pupil-expanding waveguide display device and augmented reality display device | |
| CN216622747U (en) | Optical waveguide array structure for aerial imaging | |
| CN216622748U (en) | Optical waveguide array structure for aerial imaging | |
| CN215647130U (en) | Aerial imaging device | |
| CN116256825A (en) | Optical waveguide array structure for aerial imaging | |
| US10583585B2 (en) | Method of manufacturing a screen provided with retroreflective microstructures | |
| CN116736415A (en) | Optical waveguide lens | |
| US4844589A (en) | Lenses having plural contiguous refractive index distribution substrates and method of manufacture | |
| CN112394435A (en) | Diffractive optical element and method for manufacturing same | |
| CN212341496U (en) | Optical waveguide lens | |
| CN113791397B (en) | Light emission module, depth camera and terminal | |
| CN215647129U (en) | Aerial imaging device | |
| CN114252941A (en) | Optical waveguide lens | |
| US20210141199A1 (en) | Small scale light projection device facilitating the structuring of light emitted for depth-calculating purposes | |
| CN116256824A (en) | Optical waveguide array structure for aerial imaging | |
| CN114513643A (en) | Aerial imaging device and manufacturing method thereof | |
| CN114513644A (en) | Aerial imaging device and manufacturing method thereof | |
| Yamaguchi et al. | Fabrication of a dihedral corner reflector array for a floating image manufactured by x-ray lithography using synchrotron radiation |
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 | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20230912 |
|
| WW01 | Invention patent application withdrawn after publication |