CN116256825A - Optical waveguide array structure for aerial imaging - Google Patents

Optical waveguide array structure for aerial imaging Download PDF

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Publication number
CN116256825A
CN116256825A CN202111501882.6A CN202111501882A CN116256825A CN 116256825 A CN116256825 A CN 116256825A CN 202111501882 A CN202111501882 A CN 202111501882A CN 116256825 A CN116256825 A CN 116256825A
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China
Prior art keywords
substrate
optical waveguide
waveguide array
array structure
curve
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CN202111501882.6A
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Chinese (zh)
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郭生文
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Individual
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Individual
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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound lenses
    • G02B3/0006—Arrays
    • G02B3/0037—Arrays characterized by the distribution or form of lenses
    • G02B3/0062—Stacked lens arrays, i.e. refractive surfaces arranged in at least two planes, without structurally separate optical elements in-between
    • G02B3/0068—Stacked lens arrays, i.e. refractive surfaces arranged in at least two planes, without structurally separate optical elements in-between arranged in a single integral body or plate, e.g. laminates or hybrid structures with other optical elements
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
    • G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
    • G02B30/26—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type
    • G02B30/27—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type involving lenticular arrays
    • G02B30/29—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type involving lenticular arrays characterised by the geometry of the lenticular array, e.g. slanted arrays, irregular arrays or arrays of varying shape or size
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
    • G02B30/50—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images the image being built up from image elements distributed over a 3D volume, e.g. voxels
    • G02B30/56—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images the image being built up from image elements distributed over a 3D volume, e.g. voxels by projecting aerial or floating images
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
    • Y02A90/10—Information and communication technologies [ICT] supporting adaptation to climate change, e.g. for weather forecasting or climate simulation

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Geometry (AREA)

Abstract

The invention relates to an optical waveguide array structure for aerial imaging, which comprises a substrate, wherein two sides of the substrate are respectively provided with a plurality of curve grooves, so that the substrate forms an upper optical waveguide array and a lower optical waveguide array, the inner walls of the curve grooves are provided with reflecting surfaces, 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 present invention, the horizontal visibility angle of the floating real image can be increased, even to approximately 180 degrees. And the arrangement reduces afterimage generated by reflection of light rays in the optical waveguide array structure, improves imaging quality, is beneficial to improving viewing experience of users, and can be widely applied to various scenes.

Description

Optical waveguide array structure for aerial imaging
Technical Field
The invention 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 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, there are some drawbacks in the conventional imaging method, such as that there is an oblique residual image on each of the left and right sides of the solid image, the horizontal viewing angle of the floating solid image is small (about ±30 degrees), and so on.
Disclosure of Invention
The invention 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 residual images. Solves 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 array structure for aerial formation of image, includes a base plate, the base plate both sides are equipped with a plurality of curve recesses respectively, the curve recess bottom part on base plate both sides communicates with each other, makes this base plate form two upper and lower groups optical waveguide array, curve recess inner wall is equipped with the reflecting surface, the reflecting surface quadrature of curve recess inner wall of base plate both sides is arranged.
The curved grooves on the substrate are perpendicular or nearly perpendicular or one side is perpendicular to the other side and inclined to the substrate surface.
The substrate is transparent or opaque, 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 sides of the substrate are perpendicular to each other or are not orthogonally arranged.
The utility model provides an optical waveguide array structure for aerial formation of image, includes a base plate, base plate one side is equipped with a plurality of curve recesses curve recess bottom is equipped with a plurality of holes, makes this base plate form two sets of optical waveguide arrays about curve recess inner wall and the inner wall in recess bottom hole are equipped with the reflecting surface respectively, the reflecting surface of the curve recess inner wall of base plate one side is arranged with the inner wall reflecting surface quadrature in recess bottom hole.
The holes at the bottoms of the curve grooves are square or rectangular or random, the holes at the bottoms of the curve grooves are through holes or not, and the depths of the holes at the bottoms of the curve grooves are equal or unequal.
The substrate is transparent or opaque, and the curved grooves or holes on the substrate are vertical or nearly vertical or one surface is vertical and the other surface 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 perpendicular to each other or are not perpendicular to each other.
The curved grooves or holes on the substrate are arranged in parallel or obliquely relative to the side surface of the substrate.
The other surfaces of the inner wall of the curved groove or the inner wall of the hole on the substrate are provided with reflecting surfaces, and the other surfaces are non-reflecting surfaces or are provided with reflecting surfaces.
Compared with the prior art, the optical waveguide array structure for aerial imaging has the following beneficial effects:
the utility model provides an optical waveguide array structure for aerial formation of image, includes a base plate, the base plate both sides are equipped with a plurality of curve recesses respectively, make this base plate form two sets of optical waveguide arrays about, curve recess inner wall is equipped with the reflecting surface, and the reflecting surface quadrature of curve recess inner wall on base plate both sides is arranged. According to the present invention, the horizontal visibility angle of the floating real image can be increased, even to approximately 180 degrees. And the arrangement reduces afterimage generated by reflection of light rays in the optical waveguide array structure, improves imaging quality, is beneficial to improving viewing experience of users, 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 a front view of embodiment 1 of the present invention;
FIG. 3 is a schematic diagram of an orthogonal structure of a reflecting surface according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of an internal optical path according to an embodiment of the present invention;
FIG. 5 is an imaging schematic of an embodiment of the present invention;
fig. 6 is a schematic structural diagram of another embodiment 2 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 and 3, an optical waveguide array structure for aerial imaging in the embodiment 1 of the present invention includes a substrate 1, a plurality of curved grooves 2 are provided on one surface of the substrate 1, the depth of the curved grooves 2 is half of the thickness of the substrate 1, a plurality of curved grooves 2 are provided on the other surface of the substrate 1, the depth of the curved grooves 2 is half of the thickness of the substrate 1, which is the bottom of the curved grooves 2 on the other surface, the curved grooves 2 on the two surfaces of the substrate 1 are orthogonally arranged, so that the surfaces of the substrate 1, which are not contacted with the bottoms of the curved grooves 2 on the two surfaces of the substrate 1, form an upper optical waveguide array and a lower optical waveguide array, one surface of the curved grooves 2 on the two surfaces of the substrate 1 is inclined to the surface of the substrate 1, the inner walls of the curved grooves 2 on the two surfaces of the substrate 1 are respectively provided with reflective surfaces 3, and the reflective surfaces 3 on the inner walls of the curved grooves 2 on the two surfaces of the substrate 1 are mutually perpendicular.
The vertex angles of all the optical waveguide array structures seen on a straight line are divided into left and right included angles of 45 degrees by the straight line, namely when scattered light emitted by the imaging element is incident to the edge, the scattered light always enters at an incident angle of 45 degrees. Therefore, light rays are reflected twice in the optical waveguide array structure to the greatest extent, and afterimages are prevented from being generated. When the image is small enough or the optical waveguide array structure is large enough, 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 the light is deviated from the required 45-degree incident angle, the light cannot be reflected again for converging imaging, and at the moment, the edge angle of view can only see the residual image generated by reflection.
Any scattered light emitted from the point light source, the plane light source and the stereo light source can be refocused and imaged at the same position on the other side of the optical waveguide array structure after passing through the optical waveguide array structure with the special structure, and the light source is referred to as fig. 4 and 5.
The reflecting surfaces 3 on the inner walls of the curved 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 curved grooves 2 and the curved grooves 2 in the substrate 1, the better, the curved grooves 2 are obliquely arranged relative to the side surface of the substrate, and the lengths and the widths of the curved grooves 2 on the two sides of the substrate 1 are the same.
The curved grooves 2 are processed on the two sides 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 the needs, the substrate 1 with the curved grooves 2 can be processed at one time by using a template or a mould through methods such as injection molding, injection, embossing, electroforming and the like, the depths of the curved grooves 2 on the two sides of the substrate 1 can be equal or unequal according to the needs, and the bottoms of the grooves can be communicated or not communicated. The number of the curved grooves 2 is 1 or more, and is not particularly limited, and one surface of the curved groove 2 is perpendicular to the other surface and inclined to the surface of the substrate 1, and the other surface of the groove 2 perpendicular to the surface provided with the reflecting surface is a non-reflecting surface, so that the multiple reflection light which is reflected for 3 times or more can be reduced or removed, and the parasitic 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 part of the transparent material substrate 1 except for the part where the curved grooves 2 are formed is subjected to shading treatment, and the surfaces perpendicular to the inner walls of the curved grooves 2 on both sides of the substrate 1 are plated with a metal reflective film or a dielectric film or formed with a reflective surface by another process. In addition, the reflecting surfaces of the inner walls of the curved grooves on the two sides of the substrate can be arranged in a non-orthogonal mode according to requirements, aberration can be generated when the reflecting surfaces are arranged in the non-orthogonal mode, two real images can be imaged, and 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 to a desired size as required in the finished product with the transparent reinforcing material. In the present embodiment, as an example, hundreds to thousands of such curved grooves are provided on a 5CM square substrate.
Fig. 4 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 optical waveguide array structure, divergent light of any light source can refocus and image at symmetrical positions through the optical waveguide array structure, the imaging distance is equal to the distance between the holographic reflecting layer and the light source, the imaging is equidistant, the position of the image is in the air, a specific carrier is not needed, and a 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 light waveguide array structure, the above process is carried out on the light waveguide array structure, the incidence angles after focusing and imaging are beta 1, beta 2, beta 3 and beta 4 ….
In another embodiment 2, referring to fig. 6, an optical waveguide array structure for aerial imaging includes a substrate 1, wherein one side of the substrate 1 is provided with a plurality of curved grooves 2, a plurality of square holes 3 are formed at the bottom of the curved grooves 2, the curved grooves 2 on one side of the substrate 1 are orthogonally arranged with the square holes 3 at the bottom of the grooves 2, so that the substrate 1 forms an upper group of optical waveguide array and a lower group of optical waveguide array, one side of 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 the other side of the substrate 1, reflection surfaces 4 are respectively formed on the inner walls of the curved grooves 2 and the inner walls of the square holes 3 at the bottom of the grooves 2, and the reflection surfaces 4 on the inner walls of the curved grooves 2 on one side of the substrate 1 are mutually perpendicular to the reflection surfaces 4 on the inner walls of the square holes 3 at the bottom of the grooves 2. Any scattered light emitted from the point light source, the plane light source and the stereo light source can be refocused and imaged at the same position on the other side of the optical waveguide array structure after passing through the optical waveguide array structure with the special structure, and the light source is referred to as 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 may be adopted as long as the light reflected on the reflecting surface is transmitted through 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 hole 3 at the bottom of the curved groove 2 and the hole 2 at the bottom of the curved 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 hole at the bottom of the curved groove or groove on the substrate 1 is perpendicular to the other surface and inclined to the surface of the substrate 1.
Preferably, the substrate 1 is opaque, the depths of the curved grooves on the two sides of the substrate 1 are equal, the depths of the holes on the bottoms of the curved grooves are equal, the bottoms of the curved grooves on the two sides of the substrate 1 are communicated, and the holes on the bottoms of the curved grooves are through holes.
Preferably, the curved grooves or holes on the substrate 1 are arranged parallel or diagonally to the substrate side.
Preferably, the other surface of the inner wall of the curved groove or the inner wall of the hole on the substrate 1, which is provided with the reflecting surface, is provided as a non-reflecting surface.
Preferably, the curved grooves or holes on both sides of the substrate 1 have the same length and width.
Preferably, the curved grooves on both sides of the substrate 1 are arranged at equal intervals, but may be arranged at different intervals, or may be gradually reduced or increased from the center to the edge of the substrate according to the intervals. The substrate can be used by being stacked as many as needed.
Preferably, the optical waveguide array structure forming the aerial imaging can be an optical waveguide array structure, can be spliced by a plurality of optical waveguide array structures, can be spliced by an upper optical waveguide array unit and a lower optical waveguide array unit on a plurality of substrates, and can realize larger imaging by splicing a larger optical waveguide array structure. An optical waveguide array structure may also be cut to a desired size as desired.
Preferably, the two sides of the substrate 1 are also provided with encryption curve grooves.
Preferably, the substrate 1 is a plane or wedge or sphere.
Compared with the prior art, the optical waveguide array structure for aerial imaging has the following beneficial effects:
the utility model provides an optical waveguide array structure for aerial formation of image, includes a base plate, the base plate both sides are equipped with a plurality of curve recesses respectively, make this base plate form two sets of optical waveguide arrays about, curve recess inner wall is equipped with the reflecting surface, and the reflecting surface quadrature of curve recess inner wall on base plate both sides is arranged. According to the present invention, the horizontal visibility angle of the floating real image can be increased, even to approximately 180 degrees. And the arrangement reduces afterimage generated by reflection of light rays in the optical waveguide array structure, improves imaging quality, is beneficial to improving viewing 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 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 utility model provides a light waveguide array structure for aerial formation of image, its characterized in that includes a base plate, the base plate both sides are equipped with a plurality of curve recesses respectively, the curve recess bottom part on base plate both sides communicates with each other, makes this base plate form two upper and lower groups light waveguide array, curve recess inner wall is equipped with the reflecting surface, the reflecting surface quadrature of curve recess inner wall of base plate both sides is arranged.
2. An optical waveguide array structure for aerial imaging of claim 1, wherein: the curved grooves on the substrate are perpendicular or nearly perpendicular or one side is perpendicular to the other side and inclined to the substrate surface.
3. An optical waveguide array structure for aerial imaging of claim 1, wherein: the substrate is transparent or opaque, 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 of claim 1, wherein: the reflecting surfaces of the inner walls of the curved grooves on the two sides of the substrate are perpendicular to each other or are not orthogonally arranged.
5. The utility model provides an optical waveguide array structure for aerial formation of image, its characterized in that includes a base plate, base plate one side is equipped with a plurality of curve recesses curve recess bottom is equipped with a plurality of holes, makes this base plate form two sets of optical waveguide arrays about curve recess inner wall and recess bottom hole's inner wall is equipped with the reflecting surface respectively, the reflecting surface of the curve recess inner wall of base plate one side is arranged with the inner wall reflecting surface quadrature in recess bottom hole.
6. An optical waveguide array structure for aerial imaging of claim 5, wherein: the holes at the bottoms of the curve grooves are square or rectangular or random, the holes at the bottoms of the curve grooves are through holes or not, and the depths of the holes at the bottoms of the curve grooves are equal or unequal.
7. An optical waveguide array structure for aerial imaging of claim 5, wherein: the substrate is transparent or opaque, and the curved grooves or holes on the substrate are vertical or nearly vertical or one surface is vertical and the other surface is inclined to the surface of the substrate.
8. An optical waveguide array structure for aerial imaging of 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 perpendicular to each other or are not perpendicular to each other.
9. An optical waveguide array structure for aerial imaging of 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 of claim 1 or 5, wherein: the other surfaces of the inner wall of the curved groove or the inner wall of the hole on the substrate are provided with reflecting surfaces, and the other surfaces are non-reflecting surfaces or are provided with reflecting surfaces.
CN202111501882.6A 2021-12-09 2021-12-09 Optical waveguide array structure for aerial imaging Pending CN116256825A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111501882.6A CN116256825A (en) 2021-12-09 2021-12-09 Optical waveguide array structure for aerial imaging

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111501882.6A CN116256825A (en) 2021-12-09 2021-12-09 Optical waveguide array structure for aerial imaging

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Publication Number Publication Date
CN116256825A true CN116256825A (en) 2023-06-13

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116504157A (en) * 2023-06-21 2023-07-28 深圳市文生科技有限公司 Aerial imaging element and aerial imaging device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116504157A (en) * 2023-06-21 2023-07-28 深圳市文生科技有限公司 Aerial imaging element and aerial imaging device
CN116504157B (en) * 2023-06-21 2023-09-01 深圳市文生科技有限公司 Aerial imaging element and aerial imaging device

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