CN216622748U - Optical waveguide array structure for aerial imaging - Google Patents
Optical waveguide array structure for aerial imaging Download PDFInfo
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- CN216622748U CN216622748U CN202123083494.9U CN202123083494U CN216622748U CN 216622748 U CN216622748 U CN 216622748U CN 202123083494 U CN202123083494 U CN 202123083494U CN 216622748 U CN216622748 U CN 216622748U
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Abstract
The utility model relates to an optical waveguide array structure for aerial imaging, which comprises a substrate, wherein a plurality of curve grooves are respectively arranged on two sides of the substrate, so that the substrate forms an upper group of optical waveguide array and a lower group of optical waveguide array, reflecting surfaces are arranged on the inner walls of the curve grooves, and the reflecting surfaces on the inner walls of the curve grooves on the two sides of the substrate are orthogonally arranged. According to the utility model, the horizontal visual angle of the floating real image can be increased, even to be approximately equal to 180 degrees. And the arrangement reduces the residual image generated by the reflection of the light rays in the optical waveguide array structure, improves the imaging quality, is favorable for improving the watching experience of users, and can be widely applied to various scenes.
Description
Technical Field
The utility model relates to the field of optics, in particular to an optical waveguide array structure for aerial imaging.
Background
With the development of imaging display technology, the requirements for imaging characteristics are continuously increasing. The air imaging technology is that light emitted from an object to be projected arranged on one side of an optical lens is reflected by a mirror surface in the optical lens and simultaneously transmits through a plane of the optical lens, 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. However, the existing imaging method has some defects, such as an oblique afterimage on each of the left and right sides of the real image, a small horizontal viewing angle (about ± 30 degrees) of the floating real image, and the like.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art and provide an optical waveguide array structure for aerial imaging, which can increase the horizontal visual angle of a floating real image without generating afterimages. The defects of the prior art are overcome.
In order to achieve the purpose, the technical scheme of the utility model is as follows:
the optical waveguide array structure for aerial imaging comprises a substrate, wherein a plurality of curve grooves are respectively formed in two sides of the substrate, the bottoms of the curve grooves in the two sides of the substrate are communicated, 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 curve grooves, and the reflecting surfaces on the inner walls of the curve grooves in the two sides of the substrate are arranged in an orthogonal mode.
The curved groove on the substrate is 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 non-transparent, the depths of the curved grooves on the two sides of the substrate are equal or unequal, and the bottoms of the curved grooves on the two sides of the substrate are communicated or not communicated.
The reflecting surfaces of the inner walls of the curved grooves on the two surfaces of the substrate are mutually vertical or not orthogonally arranged.
The optical waveguide array structure for aerial imaging comprises a substrate, wherein one side of the substrate is provided with a plurality of curve grooves, a plurality of holes are formed in the bottoms of the curve grooves, so that the substrate forms an upper group of optical waveguide array and a lower group of optical waveguide array, the inner walls of the curve grooves and the inner walls of the holes in the bottoms of the grooves are respectively provided with a reflecting surface, and the reflecting surface of the inner wall of the curve groove on one side of the substrate is orthogonally arranged with the inner wall reflecting surface of the hole in the bottom of the groove.
The hole at the bottom of the curve groove is square or rectangular or in any shape, the hole at the bottom of the curve groove is a through hole or a non-through hole, and the depths of the curve groove and the hole at the bottom of the groove are equal or unequal.
The substrate is transparent or non-transparent, and the curved groove or hole on the substrate is vertical or nearly vertical or one surface is vertical to the other surface and is inclined to the surface of the substrate.
The reflecting surface of the inner wall of the curved groove on one surface of the substrate and the reflecting surface of the inner wall of the hole at the bottom of the groove are mutually vertical or not orthogonally arranged.
The curved grooves or holes on the substrate are arranged in parallel or obliquely relative to the side surface of the substrate.
One side of the inner wall of the curved groove or the inner wall of the hole on the substrate is provided with a reflecting surface, and the other side is provided with a non-reflecting surface or both reflecting surfaces.
Compared with the prior art, the optical waveguide array structure for aerial imaging has the following beneficial effects:
the optical waveguide array structure for aerial imaging comprises a substrate, wherein a plurality of curve grooves are respectively formed in two sides of the substrate, so that the substrate forms an upper optical waveguide array group and a lower optical waveguide array group, reflecting surfaces are arranged on the inner walls of the curve grooves, and the reflecting surfaces of the inner walls of the curve grooves on the two sides of the substrate are orthogonally arranged. According to the utility model, the horizontal visual angle of the floating real image can be increased, even to be approximately equal to 180 degrees. And the arrangement reduces the residual image generated by the reflection of the light rays in the optical waveguide array structure, improves the imaging quality, is favorable for improving the watching experience of users, and can be widely applied to various scenes.
Additional aspects and advantages of the utility model 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 utility model.
Drawings
FIG. 1 is a schematic structural view of example 1 of the present invention;
FIG. 2 is a front view of embodiment 1 of the present invention;
FIG. 3 is a schematic diagram of an orthogonal structure of a reflection plane according to an embodiment of the utility model;
FIG. 4 is a schematic diagram of the internal optical path of an embodiment of the present invention;
FIG. 5 is a schematic view of an embodiment of the present invention;
fig. 6 is a schematic structural diagram of another embodiment 2 of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative only and should not be construed as limiting the utility model.
Referring to fig. 1, 2 and 3, an optical waveguide array structure for aerial imaging according to embodiment 1 of the present invention includes a substrate 1, a plurality of curved grooves 2 formed on one surface of the substrate 1, the depth of the curved groove 2 is half of the thickness of the substrate 1, a plurality of curved grooves 2 are arranged on the other surface of the substrate 1, the depth of the surface curve groove 2 is half of the thickness of the substrate 1 at the bottom of the other surface curve groove 2, the curve grooves 2 on the two surfaces of the substrate 1 are orthogonally arranged, a through hole is formed on the surface without contact with the bottoms of the curve grooves 2 on the two surfaces of the substrate 1, the substrate 1 forms an upper group of optical waveguide array and a lower group of optical waveguide array, one surface of the curve groove 2 on the two surfaces of the substrate 1 is perpendicular to the other surface, the inner walls of the curve grooves 2 on the two surfaces of the substrate 1 are respectively provided with a reflecting surface 3, and the reflecting surfaces 3 on the inner walls of the curve grooves 2 on the two surfaces of the substrate 1 are perpendicular to each other.
Viewed from any direction from the center to the edge, the apex angles of all the optical waveguide array structures viewed on a straight line are divided by the straight line into 45 ° angles from left to right, that is, when the dispersed light emitted from the imaging element is incident toward the edge, the light is always incident at an incident angle of 45 °. Therefore, the light rays are reflected twice in the optical waveguide array structure to the maximum extent, and the generation of residual images is prevented. When the image is sufficiently small or the optical waveguide array structure is sufficiently large, the horizontal viewing angle can be approximately equal to 180 degrees. In the existing imaging method, after the angle of view is deviated from the center by 30 degrees, the incident angle of light is far deviated from the required 45-degree incident angle, the light cannot be reflected for the second time and then converged for imaging, and at the moment, only residual images generated by reflection can be seen in the edge angle of view.
Scattered light emitted from any point light source, planar light source and stereo light source passes through the optical waveguide array structure with the special structure and is refocused and imaged at the same position on the other side of the optical waveguide array structure, and refer to fig. 4 and 5.
The reflecting surfaces 3 on the inner walls of the curved grooves 2 on the two surfaces of the substrate 1 are used for carrying out total reflection on light. The smaller the distance between the curved groove 2 and the curved groove 2 in the substrate 1, the better, the curved groove 2 is obliquely arranged relative to the side surface of the substrate, and the length and the width of the curved groove 2 on the two surfaces of the substrate 1 are the same.
The curved grooves 2 are processed on the two surfaces of the substrate 1 by processing methods such as laser engraving, photoetching, etching, machining and the like, the curved grooves 2 can be processed in a frame according to requirements, the substrate 1 with the curved grooves 2 can also be processed by a template or a mould through methods such as injection molding, imprinting, electroforming and the like at one time, the depths of the curved grooves 2 on the two surfaces of the substrate 1 can be equal or unequal according to requirements, and the bottoms of the grooves can be communicated or not communicated. The number of the curved grooves 2 is not particularly limited if 1 or more, and the other surface of one surface of the curved groove 2 perpendicular to the surface of the substrate 1 is inclined to the surface of the substrate, and the other surface of the groove 2 perpendicular to the surface is provided with a reflecting surface and is a non-reflecting surface, so that multiple reflected light of 3 or more reflections can be reduced or removed, and stray light can be effectively eliminated. There are multiple reflecting surfaces reflecting inside the optical waveguide, causing unwanted multiple reflections, which form interfering stray light. The substrate 1 is made of transparent material or opaque material, for example, the transparent material substrate 1 is processed by shading except the part for forming the curve groove 2, and the vertical surface of the inner wall of each curve groove 2 on the two surfaces of the substrate 1 is plated with metal reflective film or dielectric film or is formed with reflective surface by other processes. In addition, the reflecting surfaces of the inner walls of the curved grooves on both surfaces of the substrate may be arranged non-orthogonally as required, and in the case where the reflecting surfaces are arranged non-orthogonally, aberration may be generated to form two real images, or the like. 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 into a desired size as needed in the finished product with the transparent reinforcing material. In the present embodiment, as an example, several hundreds to several thousands of such curved grooves are provided on a substrate 5CM square.
Fig. 4 shows the working principle of the light path:
on the micrometer structure, a reflecting layer mirror surface structure which is orthogonal with each other is used for orthogonal decomposition of any optical signal, 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 a reflection angle which is the same as an incident angle on a first physical layer, the signal Y is kept parallel to the first physical layer at the moment, after passing through the first physical layer, the signal Y is totally reflected on the mirror surface according to a reflection angle which is the same as the incident angle on a second physical layer surface, and a reflected optical signal which is formed by the reflected signal Y and the signal X is mirror-symmetrical with the original optical signal. Therefore, the light rays in any direction can realize mirror symmetry through the optical waveguide array structure, the divergent light of any light source can be refocused and imaged at a symmetrical position through the optical waveguide array structure, the imaging distance is the same as the distance between the holographic reflection layer and the light source, the imaging is carried out at equal distance, the image position 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 actual object.
After an original light source passes through the optical waveguide array structure, the above process occurs on the optical waveguide array structure, the incidence angles after focusing imaging are respectively beta 1, beta 2, beta 3, beta 4 … beta n, and the distance L between the image and the optical waveguide array structure, so that the imaging is performed at the equal interval L between the optical waveguide array structure and the original light source, and the visual angle epsilon is 2-times max (beta), therefore, when the image is small enough or the optical waveguide array structure is large enough, the horizontal visual angle can be approximately equal to 180 degrees, the light beams led out by the optical waveguide array structure are all focused towards a specified point by combining several optical waveguide array structures together, so that people can view the aerial image in a range of 360 degrees, if the size of the plate is increased, a larger imaging distance can be realized, and the visual field rate is increased.
In another embodiment 2, please refer to fig. 6, an optical waveguide array structure for aerial imaging includes a substrate 1, one side of the substrate 1 is provided with a plurality of curved grooves 2, the bottom of the curved grooves 2 is provided with a plurality of square holes 3, the curved grooves 2 on one side of the substrate 1 and the square holes 3 at the bottom of the grooves 2 are orthogonally arranged, so that the substrate 1 forms an upper and a lower optical waveguide array, the curved grooves 2 on one side of the substrate 1 and the square holes 3 at the bottom of the grooves 2 are perpendicular to each other, the other side is inclined to the surface of the substrate 1, the inner walls of the curved grooves 2 and the inner walls of the square holes 3 at the bottom of the grooves 2 are respectively provided with a reflective surface 4, and the reflective surfaces 4 on the inner walls of the curved grooves 2 on one side of the substrate 1 and the reflective surfaces 4 on the inner walls of the square holes 3 at the bottom of the grooves 2 are perpendicular to each other. Scattered light emitted from any point light source, planar light source and stereo light source passes through the optical waveguide array structure with the special structure and is refocused and imaged at the same position on the other side of the optical waveguide array structure, and refer to fig. 4 and 5. In this embodiment, the hole 3 at the bottom of the curved groove 2 is square or rectangular, and any shape can be adopted as long as the light energy reflected by the reflecting surface transmits the hole, the hole 3 at the bottom of the curved groove 2 may be a through hole or not, and the depths of the curved groove 2 and the hole 3 at the bottom of the groove 2 are equal or unequal. Other parts of this embodiment are the same as those of the above embodiment, and are not described again.
Preferably, one side of the curved groove or the hole at the bottom of the groove on the substrate 1 is perpendicular to the other side and is inclined to the surface of the substrate 1.
Preferably, the substrate 1 is opaque, the depths of the curved grooves on both sides of the substrate 1 are equal, the depths of the curved grooves and the holes at the bottoms of the grooves are equal, the bottoms of the curved grooves on both sides of the substrate 1 are communicated, and the holes at the bottoms of the curved grooves are through holes.
Preferably, the curved grooves or holes on the substrate 1 are arranged parallel or obliquely with respect to the substrate side.
Preferably, one side of the inner wall of the curved groove or 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 curved grooves or holes on both sides of the substrate 1 have the same length and width.
The curved grooves on both sides of the substrate 1 are preferably arranged at equal intervals, but may be arranged at different intervals, or may be arranged at intervals gradually decreasing or increasing from the center to the edge of the substrate. The substrate can be used by stacking a plurality of substrates according to the requirement.
Preferably, the optical waveguide array structure forming the aerial imaging may be one optical waveguide array structure, or may be formed by splicing several optical waveguide array structures, or may be formed by splicing upper optical waveguide array units and lower optical waveguide array units on several substrates, so that a larger optical waveguide array structure formed by splicing may realize larger imaging. An optical waveguide array structure can also be cut to the desired size as desired.
Preferably, the substrate 1 is further provided with encrypted curved grooves on both sides.
Preferably, the substrate 1 is a plane or a wedge-shaped surface or a spherical surface.
Compared with the prior art, the optical waveguide array structure for aerial imaging has the following beneficial effects:
the optical waveguide array structure for aerial imaging comprises a substrate, wherein a plurality of curve grooves are respectively formed in two sides of the substrate, so that the substrate forms an upper optical waveguide array group and a lower optical waveguide array group, reflecting surfaces are arranged on the inner walls of the curve grooves, and the reflecting surfaces of the inner walls of the curve grooves on the two sides of the substrate are orthogonally arranged. According to the utility model, the horizontal visual angle of the floating real image can be increased, even to be approximately equal to 180 degrees. And the arrangement reduces the residual image generated by the reflection of the light rays in the optical waveguide array structure, improves the imaging quality, is favorable for improving the watching experience of users, 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, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. The optical waveguide array structure for aerial imaging is characterized by comprising a substrate, wherein a plurality of curve grooves are respectively formed in two sides of the substrate, the bottom parts of the curve grooves in the two sides of the substrate are communicated, so that the substrate forms an upper group of optical waveguide array and a lower group of optical waveguide array, reflecting surfaces are arranged on the inner walls of the curve grooves, and the reflecting surfaces on the inner walls of the curve grooves in the two sides of the substrate are arranged in an orthogonal mode.
2. An optical waveguide array structure for aerial imaging according to claim 1, wherein: the curved groove on the substrate is 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 array structure for aerial imaging according to claim 1, wherein: the substrate is transparent or non-transparent, the depths of the curved grooves on the two sides of the substrate are equal or unequal, and the bottoms of the curved grooves on the two sides of the substrate are communicated or not communicated.
4. An optical waveguide array structure for aerial imaging according to claim 1, wherein: the reflecting surfaces of the inner walls of the curved grooves on the two surfaces of the substrate are mutually vertical or not orthogonally arranged.
5. The optical waveguide array structure for aerial imaging is characterized by comprising a substrate, wherein one surface of the substrate is provided with a plurality of curve grooves, the bottoms of the curve grooves are provided with a plurality of holes, so that the substrate forms an upper group of optical waveguide array and a lower group of optical waveguide array, the inner walls of the curve grooves and the inner walls of the holes at the bottoms of the grooves are respectively provided with a reflecting surface, and the reflecting surface of the inner wall of the curve groove on one surface of the substrate and the reflecting surface of the inner wall of the hole at the bottom of the groove are arranged in an orthogonal mode.
6. An optical waveguide array structure for aerial imaging according to claim 5, wherein: the holes at the bottom of the curved groove are through holes or non-through holes, and the depths of the curved groove and the holes at the bottom of the groove are equal or unequal.
7. An optical waveguide array structure for aerial imaging according to claim 5, wherein: the substrate is transparent or non-transparent, and the curved groove or hole on the substrate is vertical or nearly vertical or one surface is vertical to the other surface and is inclined to the surface of the substrate.
8. An optical waveguide array structure for aerial imaging according to claim 5, wherein: the reflecting surface of the inner wall of the curved groove on one surface of the substrate and the reflecting surface of the inner wall of the hole at the bottom of the groove are mutually vertical or not orthogonally arranged.
9. An optical waveguide array structure for aerial imaging according to claim 1 or 5, wherein: the curved grooves or holes on the substrate are arranged in parallel or obliquely relative to the side surface of the substrate.
10. An optical waveguide array structure for aerial imaging according to claim 1 or 5, wherein: one side of the inner wall of the curved groove or the inner wall of the hole on the substrate is provided with a reflecting surface, and the other side is provided with a non-reflecting surface or both reflecting surfaces.
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| CN202123083494.9U CN216622748U (en) | 2021-12-09 | 2021-12-09 | Optical waveguide array structure for aerial imaging |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023020603A1 (en) * | 2021-08-19 | 2023-02-23 | 安徽省东超科技有限公司 | Dihedral corner reflector array structure for aerial imaging |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023020603A1 (en) * | 2021-08-19 | 2023-02-23 | 安徽省东超科技有限公司 | Dihedral corner reflector array structure for aerial imaging |
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