Optical element and manufacturing process therefor
By adjusting the position of the transparent strip using ion beam etching and X-ray diffraction techniques, the problem of uneven coating in optical component manufacturing was solved, achieving uniform adhesion of the metal reflective film and improving optical performance.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- JIANGXI XIANGHANG TECH CO LTD
- Filing Date
- 2024-12-26
- Publication Date
- 2026-07-02
AI Technical Summary
In existing optical component manufacturing methods, cutting stress can easily cause the transparent sheet to bend and the interatomic gaps inside the metal reflective layer to increase, resulting in uneven coating.
The two sides of the transparent strip are treated with an ion beam etching machine to increase the adhesion of the metal reflective film. The arrangement information of atoms in the metal reflective film is obtained by X-ray diffraction. The positions of adjacent transparent strips are adjusted to create a staggered gap. Physical vapor deposition equipment is used to deposit a film to form a uniform metal reflective film.
This effectively avoids bending of the transparent plate and increased interatomic gaps within the metal reflective film caused by cutting stress, thus improving the uniformity and optical performance of the coating.
Smart Images
Figure CN2024142794_02072026_PF_FP_ABST
Abstract
Description
An optical element and its manufacturing process Technical Field
[0001] This invention belongs to the field of optical element technology, specifically relating to an optical element and its manufacturing process. Background Technology
[0002] Optical components are fundamental parts of optical systems and play a vital role in modern technology. There are many types of optical components, the most common being lenses, prisms, and mirrors. A lens is an optical component that can change the direction of light propagation; they are divided into convex lenses and concave lenses. Convex lenses converge light rays and are widely used in magnifying glasses, camera lenses, etc.; concave lenses diverge light rays and can be used to correct nearsightedness. Prisms can change the direction of light propagation and disperse light rays, and are important in spectrophotometers, periscopes, and other equipment. Mirrors change the path of light by reflecting it; for example, in optical instruments such as telescopes and microscopes, mirrors can reflect light in a specific direction to achieve observation and imaging of objects.
[0003] For example, the invention patent with publication number "CN108318948A" discloses an optical imaging element and its manufacturing method. This optical imaging element mainly consists of an upper light-transmitting laminate and a lower light-transmitting laminate. Both the upper and lower light-transmitting laminates are formed by bonding together several thin, transparent strips coated with single-sided or double-sided metallic reflective layers. The internal reflective surfaces of the two light-transmitting laminates are orthogonally arranged, and the upper and lower light-transmitting laminates are bonded together using a transparent polymer adhesive. The manufacturing method includes several steps: coating with a metallic reflective layer, cutting transparent materials, bonding thin, transparent strips, forming and polishing the light-transmitting laminates, and molding the optical component. The optical imaging element of this invention has a simple structure and good optical imaging performance. The manufacturing method of the optical imaging element has advantages such as simple production processes and low production costs. Compared with existing manufacturing methods, it can save a significant amount of manpower and resources, enabling low-cost mass production of optical components.
[0004] In existing optical component manufacturing methods, when manufacturing optical components, a transparent thin plate coated with a high-reflectivity metal reflective layer is first cut into several thin transparent strips along the edge direction before proceeding with subsequent operations. However, when cutting the transparent thin plate and the metal reflective layer, the cutting stress can easily cause the transparent thin plate to bend and the interatomic gaps inside the metal reflective layer to increase, resulting in uneven coating.
[0005] Therefore, there is a need for an optical element and its manufacturing process to solve the problems in the existing technology, such as the cutting stress causing the transparent sheet to bend and the increase in the interatomic gaps inside the metal reflective layer, resulting in uneven coating. Summary of the Invention
[0006] The purpose of this invention is to provide an optical element and its manufacturing process to solve the problems mentioned in the background art.
[0007] To achieve the above objectives, the present invention provides the following technical solution: In a first aspect, the present invention proposes an optical element comprising a plurality of linearly distributed slender transparent strips, wherein a metal reflective film is respectively disposed on one side of two adjacent slender transparent strips close to each other, and a transparent polymer adhesive is respectively bonded to both ends of the plurality of slender transparent strips.
[0008] Preferably, the transparent slender strip is made of glass, plexiglass, or resin material.
[0009] Preferably, the metal reflective film is made of aluminum, silver, copper, chromium or platinum.
[0010] Preferably, the transparent polymer adhesive is made of acrylate material.
[0011] Secondly, the present invention proposes a manufacturing process for an optical element, comprising the following steps:
[0012] S1. Select a transparent plate with a length of 20cm, a width of 16cm, and a thickness of 2-3cm. Cut it into several thin transparent strips of the same width. Then, polish both sides of the thin transparent strips one by one to make the width of the thin transparent strips the same after polishing. Then, clean the polished thin transparent strips with an ultrasonic cleaning device to remove the impurities from the polished surface.
[0013] S2. The two sides of the polished transparent plate are processed by an ion beam etching machine. The ion beam etching machine generates an ion beam with a certain energy and beam density through an ion source. Then, the ion beam is focused and accelerated to bombard the two sides of the thin transparent strip, achieving high-precision processing of the two sides of the thin transparent strip. At the same time, it creates micro-roughness on the two sides of the thin transparent strip, increases the adhesion between the metal reflective film and the thin transparent strip, thereby promoting the uniform adhesion of the metal reflective film. It can also effectively remove impurities, weak layers and adsorbed gases on the two sides of the thin transparent strip, and improve the optical performance of the optical components.
[0014] S3. Using physical vapor deposition equipment, metal reflective film is deposited on two adjacent thin transparent strips close to each other on both sides to obtain thin transparent strips with uniform thickness of metal reflective film on both sides.
[0015] S4. Use an X-ray diffractometer to irradiate the metal reflective films on both sides of the thin transparent strip to produce diffraction phenomena. Finally, obtain the diffraction pattern, analyze the diffraction pattern, and obtain the arrangement information of atoms in the metal reflective films on both sides. There are multiple gaps in the atomic arrangement distribution in the arrangement information, and there are corresponding overlaps in the multiple gaps in the arrangement information of the metal reflective films on both sides.
[0016] S5. Repeat the operation of S4 to perform diffraction processing on the metal reflective films on both sides of the remaining thin transparent strip to obtain the diffraction patterns of the metal reflective films on both sides of the thin transparent strip.
[0017] S6. Compare and analyze the diffraction patterns of two adjacent thin transparent strips that are close to each other on both sides of the metal reflective film. Select the part of the two patterns where there are gaps between the atoms of the metal reflective film and record the length of the corresponding thin transparent strip.
[0018] S7. Adjust the positions of two adjacent thin transparent strips so that the gaps in the metal reflective films on both sides are misaligned, so that the gaps in the arrangement information of the metal reflective films on both sides do not overlap. The non-gap positions of the metal reflective films on one side correspond to the gaps of the metal reflective films on the other side. Finally, the gaps of the metal reflective films on both sides are complemented by each other, so that the metal reflective films on both sides can form a uniformly arranged metal reflective film. Finally, several uniformly arranged but inconsistent lengths are formed. Select the part with overlapping lengths in S6 and draw two lines along the direction perpendicular to the thin transparent strips so that the gaps of the metal reflective films are located between the two lines. Then draw two more lines along the direction perpendicular to the thin transparent strips. These two lines are located on both sides of the two lines drawn in the first time. The part between the two lines drawn in the first time and the two lines drawn in the second time still includes the atomic gaps of the metal reflective films. Fix the thin transparent strips and then cut them along the second line so that the thin transparent strips present a rectangular structure.
[0019] S8. Adhere transparent polymer adhesive to both sides of several thin, transparent strips in S7 along the vertical direction, and form an optical element after curing.
[0020] Compared with the prior art, the optical element and its manufacturing process provided by the present invention have at least the following beneficial effects:
[0021] (1) By treating both sides of the polished transparent plate with an ion beam etching machine, the ion beam etching machine generates an ion beam with a certain energy and beam density through an ion source, and then focuses and accelerates the ion beam to bombard the surface of the transparent plate, thereby achieving high-precision processing of both sides of the thin transparent strip. At the same time, it creates micro-roughness on both sides of the thin transparent strip, increases the adhesion between the metal reflective film and the thin transparent strip, thereby promoting the uniform adhesion of the metal reflective film. It can also effectively remove impurities, weak layers and adsorbed gases on both sides of the thin transparent strip, and improve the optical performance of the optical components.
[0022] (2) By using physical vapor deposition equipment, both sides of the slender transparent strip can be coated. By using an X-ray diffractometer to irradiate the metal reflective film on both sides of the slender transparent strip, the arrangement information of atoms in the metal reflective film can be obtained. By bringing two adjacent slender transparent strips close to each other and misaligning the gaps between the metal reflective films on both sides, the gaps between the metal reflective films on both sides are filled with each other, so that the metal reflective films on both sides can form a metal reflective film with uniform atomic arrangement. Finally, several uniformly arranged but inconsistent lengths are formed, thereby further improving the uniformity of the metal reflective film coating.
[0023] (3) By first cutting the transparent plate into several transparent strips, and then polishing, cleaning and coating the transparent strips, it is possible to effectively avoid the stress generated during cutting when directly cutting the transparent plate and the metal reflective film on it, which would cause the transparent plate to bend and the interatomic gaps inside the metal reflective film to increase, thus affecting the uniformity of the coating.
[0024] (4) By setting the first line, the thin transparent plate part between the two first lines is the final optical element part. By setting the second line, it is possible to cut the part outside the first line, that is, the part of the second line. This minimizes the stress generated when cutting the part actually used by the optical element, that is, the part between the two first lines. This further avoids the stress generated during cutting, which causes the transparent plate to bend and the interatomic gap inside the metal reflective film to increase, thereby affecting the uniformity of the coating. Attached Figure Description
[0025] Figure 1 is a schematic diagram of the overall structure of the present invention;
[0026] Figure 2 is a partially enlarged structural diagram of A in Figure 1 of this invention;
[0027] Figure 3 is a schematic diagram of the structure of the slender transparent strip of the present invention when it is not cut;
[0028] Figure 4 is a schematic diagram of the interatomic gaps within the metal reflective film of the present invention;
[0029] Figure 5 is a side view of the structure after two adjacent metal reflective films of the present invention come into contact.
[0030] Figure 6 is a schematic diagram of the overlapping portion of the dual-layer optical element of the present invention.
[0031] Figure 7 is a schematic diagram of the imaging of the optical element of the present invention.
[0032] In the diagram: 100, a thin, transparent strip; 200, a metallic reflective film; 300, a transparent polymer adhesive. Detailed Implementation
[0033] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. It should be noted that, unless otherwise specified, the implementation methods and features in the implementation methods in this disclosure can be combined, separated, interchanged, and / or rearranged. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0034] In the accompanying drawings, the dimensions and relative dimensions of components may be exaggerated for clarity and / or descriptive purposes. When exemplary embodiments can be implemented differently, a specific process sequence may be performed in a different order than that described. For example, two consecutively described processes may be performed substantially simultaneously or in the reverse order of their description. Furthermore, the same reference numerals denote the same components.
[0035] The terminology used herein is for the purpose of describing particular embodiments and is not intended to be limiting. As used herein, unless the context clearly indicates otherwise, the singular forms “a” and “the” are intended to include the plural forms as well. Furthermore, when the terms “comprising” and / or “including” and variations thereof are used in this specification, it indicates the presence of the stated features, integrals, steps, operations, parts, components, and / or groups thereof, but does not exclude the presence or addition of one or more other features, integrals, steps, operations, parts, components, and / or groups thereof. It should also be noted that, as used herein, the terms “substantially,” “about,” and other similar terms are used as approximate terms rather than as terms of degree, thus explaining the inherent biases in measurements, calculated values, and / or provided values that would be recognized by one of ordinary skill in the art.
[0036] Please refer to Figures 1-7;
[0037] Example 1:
[0038] Embodiment 1 proposes an optical element comprising a plurality of linearly distributed elongated transparent strips 100. Each elongated transparent strip 100 includes a light incident surface 101, a first reflective surface 102, a second reflective surface 103, and a light emitting surface 104. The light incident surface 101 and the light emitting surface 104 are parallel to each other, as are the first reflective surface 102 and the second reflective surface 103. Four elongated transparent strips 100 are arranged sequentially along the direction indicated by arrow A. The first reflective surface 102 and the second reflective surface 103 of each elongated transparent strip 100 are perpendicular to the direction indicated by arrow A, thus forming an optical element. Furthermore, the first reflective surface 102 of one elongated transparent strip 100 is in contact with the second reflective surface 103 of the adjacent elongated transparent strip 100. Therefore, the light incident surfaces 101 of all elongated transparent strips 100 together constitute the light incident surface of the optical element, and the light emitting surfaces 104 of all elongated transparent strips 100 together constitute the light emitting surface of the optical element. An external light source 105 is disposed on one side of the light incident surface of the elongated transparent strip 100. The light rays s1 emitted by the external light source 105 enter the optical element from the light incident surface, are reflected, exit from the light exiting surface of the optical element, and reconverge, thereby forming an image of the external light source 105 emitting light device. Specifically, the light rays s1 enter from the light incident surface 101 of each elongated transparent strip 100, are reflected by the first reflecting surface 102, and exit from the light exiting surface 104, thereby forming an aerial image of the external light source 105 emitting light device.
[0039] To effectively improve the imaging effect, metal reflective films 200 are respectively provided on one side of two adjacent thin transparent strips 100 close to each other, and transparent polymer adhesives 300 are respectively bonded to both ends of several thin transparent strips 100.
[0040] As a further aspect of the present invention, the transparent slender strip is made of glass, plexiglass, or resin material.
[0041] As a further embodiment of the present invention, the metal reflective film 200 is made of aluminum, silver, copper, chromium or platinum.
[0042] As a further embodiment of the present invention, the transparent polymer adhesive 300 is selected from acrylic materials.
[0043] Among them, transparent polymer adhesive 300 is a transparent adhesive material with polymer compounds as the main body, including acrylate, silicone, polyurethane and epoxy resin.
[0044] It should be noted that the optical element described in this embodiment can be used in a single-layer state or a double-layer state. A double-layer state refers to two aforementioned optical elements overlapping at a certain angle, or stacked one on top of the other. For example, the first layer of optical elements is arranged in direction A, and the second layer of optical elements is stacked on top of the first layer, with its arrangement direction perpendicular to direction A or at a certain angle to direction A. This angle can be any angle between 25-120°, such as 30°, 45°, 60°, 75°, etc., without limitation. A specific double-layer state is shown in Figure 6. In the single-layer case, due to its lower energy consumption and longer imaging angle, it is used as a warning image, i.e., providing a warning through the imaging of a single-layer optical element. For example, at some corners, it is necessary to warn of turning while avoiding collisions with objects turning; in this case, the imaging of a single-layer optical element can be used for warning. Of course, it can also be used for other aerial imaging and light source processing.
[0045] Example 2:
[0046] Example 2 proposes a fabrication process for an optical element, comprising the following steps:
[0047] S1. Select a transparent plate with a length of 20cm, a width of 16cm, and a thickness of 2-3cm. Cut it into several thin transparent strips 100 of the same width. Then, polish both sides of the thin transparent strips one by one to make the width of the thin transparent strips 100 the same after polishing. Then, clean the polished thin transparent strips 100 with an ultrasonic cleaning device to remove the impurities from the polished surface.
[0048] S2. The two sides of the polished transparent plate are processed by an ion beam etching machine. The ion beam etching machine generates an ion beam with a certain energy and beam density through an ion source. Then, the ion beam is focused and accelerated to bombard the surface of the transparent plate, achieving high-precision processing of both sides of the thin transparent strip 100. At the same time, it creates micro-roughness on both sides of the thin transparent strip 100, increases the adhesion between the metal reflective film 200 and the thin transparent strip 100, thereby promoting the uniform adhesion of the metal reflective film 200. It can also effectively remove impurities, weak layers and adsorbed gases on both sides of the thin transparent strip 100, and improve the optical performance of the optical components.
[0049] S3. Using a physical vapor deposition device, the metal reflective film 200 is deposited on two adjacent thin transparent strips 100 close to each other on both sides to obtain thin transparent strips 100 with uniform thickness of metal reflective film 200 on both sides.
[0050] S4. Use an X-ray diffractometer to irradiate the metal reflective films 200 on both sides of the thin transparent strip 100 to produce diffraction phenomena. Finally, obtain the diffraction pattern, analyze the diffraction pattern, and obtain the atomic arrangement information in the metal reflective films 200 on both sides. There are multiple gaps in the atomic arrangement distribution in the arrangement information, and there are corresponding overlaps in the multiple gaps in the arrangement information of the metal reflective films 200 on both sides.
[0051] S5. Repeat the operation of S4 to perform diffraction processing on the metal reflective film 200 on both sides of the remaining thin transparent strip 100 to obtain the diffraction pattern of the metal reflective film 200 on both sides of the thin transparent strip 100.
[0052] S6. Compare and analyze the diffraction patterns of two adjacent thin transparent strips 100 that are close to each other on both sides of the metal reflective film 200. Select the part of the two patterns where there are gaps between the atoms of the metal reflective film 200 and record the length of the corresponding thin transparent strip 100 part.
[0053] S7. Adjust the positions of two adjacent thin transparent strips 100 so that the gaps between the two adjacent thin transparent strips 100 are misaligned, so that the gaps in the arrangement information of the two metal reflective films 200 do not overlap. The non-gap positions of one side of the metal reflective film 200 correspond to the gaps of the other side of the metal reflective film 200. Finally, the gaps of the two metal reflective films 200 are mutually supplemented, so that the two metal reflective films 200 together can form a metal reflective film 200 with uniform atomic arrangement, ultimately forming several uniformly arranged... Take the entire series of strips with inconsistent lengths, select the part of S6 with overlapping lengths, and draw two lines along the direction perpendicular to the strips 100, so that the gap part of the metal reflective film 200 is located between the two lines. Then draw two more lines along the direction perpendicular to the strips 100. These two lines are located on both sides of the two lines drawn in the first time. The part between the two lines drawn in the first time and the two lines drawn in the second time still includes the atomic gap part of the metal reflective film 200. Fix the strips 100, and then cut them along the second line so that the strips 100 present a rectangular structure.
[0054] S8. Adhere transparent polymer adhesive 300 to both sides of several thin transparent strips 100 in S7 along the vertical direction, and form an optical element after curing.
[0055] This solution involves the following steps: First, a transparent plate with a length of 20cm, a width of 16cm, and a thickness of 2-3cm is selected and cut into several thin, elongated transparent strips 100 of equal width. Then, both sides of the thin transparent strips 100 are polished one by one to ensure that the width of the polished strips 100 is the same. Next, the polished strips 100 are cleaned using an ultrasonic cleaning device to remove impurities from the polished surface. Then, both sides of the polished transparent plate are treated with an ion beam etching machine. The ion beam etching machine generates an ion beam with a certain energy and beam density through an ion source. The ion beam is then focused and accelerated to bombard the surface of the transparent plate, achieving high-precision processing of both sides of the thin transparent strips 100. At the same time, it creates microscopic roughness on both sides of the thin transparent strips 100, increasing the adhesion between the metal reflective film 200 and the thin transparent strips 100, thereby promoting the uniform adhesion of the metal reflective film 200. It can also effectively remove impurities, weak layers, and adsorbed gases on both sides of the thin transparent strips 100, improving the optical performance of the optical components.
[0056] A metal reflective film 200 was deposited on the sides of two adjacent elongated transparent strips 100 using physical vapor deposition (PVD) equipment, resulting in elongated transparent strips 100 with uniform thickness on both sides. X-ray diffractometers were used to irradiate the metal reflective films 200 on both sides of the elongated transparent strips 100, producing diffraction patterns. Analysis of the diffraction patterns revealed the atomic arrangement information within the metal reflective films 200 on both sides. The atomic arrangement information showed multiple interstitial areas, and these interstitial areas overlapped. The process was repeated. The process of obtaining diffraction patterns involves performing diffraction processing on the metal reflective films 200 on both sides of the remaining elongated transparent strip 100 to obtain the corresponding diffraction patterns of the metal reflective films 200 on both sides of the elongated transparent strip 100; comparing and analyzing the diffraction patterns of two adjacent elongated transparent strips 100 that are close to each other on both sides of the metal reflective films 200, selecting the part of the two patterns where there are gaps between the atoms of the metal reflective films 200, and recording the length of the corresponding part of the elongated transparent strip 100; adjusting the positions of two adjacent elongated transparent strips 100 to bring the two adjacent elongated transparent strips 100 close to each other on both sides of the metal reflective films 200 at multiple points. The gaps are misaligned, resulting in multiple gaps in the arrangement information of the two metal reflective films 200 not corresponding to each other. The non-gap positions of one side of the metal reflective film 200 correspond to the gaps of the other side, ultimately making the gaps of the two metal reflective films 200 complement each other. This allows the two metal reflective films 200 together to form a metal reflective film 200 with uniform atomic arrangement, ultimately forming several uniformly arranged but inconsistent lengths. Selecting the parts with overlapping lengths, two lines are drawn perpendicular to the several thin transparent strips 100, making the metal reflective film... The gap portion 200 is located between two lines. Then, two more lines are drawn perpendicular to several thin transparent strips 100. These two lines are located on both sides of the two lines drawn in the first time. The part between the two lines drawn in the first time and the two lines drawn in the second time still contains the interatomic gap portion of the metal reflective film 200. Several thin transparent strips 100 are fixed and then cut along the second line so that the several thin transparent strips 100 present a rectangular structure. The several thin transparent strips 100 presenting a rectangular structure are then bonded with transparent polymer adhesive 300 on both sides in the vertical direction. After curing, they form an optical element.
[0057] As can be seen from the above working process, by treating both sides of the polished transparent plate with an ion beam etching machine, the ion beam etching machine generates an ion beam with a certain energy and beam density through an ion source, and then focuses and accelerates the ion beam to bombard the surface of the transparent plate, thereby achieving high-precision processing of both sides of the slender transparent strip 100. At the same time, it creates microscopic roughness on both sides of the slender transparent strip 100, increases the adhesion between the metal reflective film 200 and the slender transparent strip 100, thereby promoting the uniform adhesion of the metal reflective film 200. It can also effectively remove impurities, weak layers and adsorbed gases on both sides of the slender transparent strip 100, and improve the optical performance of the optical components.
[0058] By employing physical vapor deposition equipment, both sides of the slender transparent strip 100 can be coated. By irradiating the metal reflective films 200 on both sides of the slender transparent strip 100 with an X-ray diffractometer, the atomic arrangement information within the metal reflective films 200 can be obtained. By bringing two adjacent slender transparent strips 100 closer together and misaligning the gaps between the metal reflective films 200 on both sides, the gaps between the metal reflective films 200 on both sides are filled, so that the metal reflective films 200 on both sides can form a metal reflective film 200 with uniform atomic arrangement. Finally, several uniformly arranged but inconsistent lengths are formed, thereby further improving the uniformity of the metal reflective film 200 coating.
[0059] By first cutting the transparent plate into several transparent strips, and then polishing, cleaning, and coating the transparent strips, the stress generated during cutting can be effectively avoided, which would cause the transparent plate to bend and the interatomic gaps inside the metal reflective film 200 to increase, thus affecting the uniformity of the coating.
[0060] By setting the first line, the slender transparent plate section between the two first lines becomes the final optical element section. By setting the second line, it is possible to cut the part outside the first line, that is, the part with the second line. This minimizes the stress generated during cutting on the part of the optical element that is actually used, that is, the part between the two first lines. This further avoids the stress generated during cutting, which could cause the transparent plate to bend and the interatomic gaps inside the metal reflective film 200 to increase, thus affecting the uniformity of the coating.
[0061] Figures 4 and 5 are only schematic diagrams to show the state of the interatomic gaps; the actual interatomic gaps are not completely regular.
[0062] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. An optical element comprising a plurality of linearly distributed elongated transparent strips (100), characterized in that, Two adjacent slender transparent strips (100) are respectively provided with metal reflective films (200) on one side close to each other, and the two ends of several slender transparent strips (100) are respectively bonded with transparent polymer adhesives (300).
2. An optical element according to claim 1, characterized in that: The transparent, slender strip is made of glass, plexiglass, or resin.
3. An optical element according to claim 1, characterized in that: The metal reflective film (200) is made of aluminum, silver, copper, chromium or platinum.
4. An optical element according to claim 1, characterized in that: The transparent polymer adhesive (300) is made of acrylate material.
5. A manufacturing process for an optical element, characterized in that, The application of the optical element according to claims 1-4 includes the following steps: S1. Select a transparent plate with a length of 20cm, a width of 16cm, and a thickness of 2-3cm. Cut it into several thin transparent strips (100) of the same width. Then polish both sides of the thin transparent strips one by one so that the width of the thin transparent strips (100) after polishing is the same. Then clean the polished thin transparent strips (100) with an ultrasonic cleaning device to remove the impurities on the polished surface. S2. The two sides of the polished transparent plate are processed by an ion beam etching machine. The ion beam etching machine generates an ion beam with a certain energy and beam density through an ion source. Then the ion beam is focused and accelerated to bombard the two sides of the thin transparent strip (100) to achieve high-precision processing of the two sides of the thin transparent strip (100). S3. Using a physical vapor deposition device, metal reflective film (200) is deposited on two adjacent thin transparent strips (100) close to each other on both sides to obtain thin transparent strips (100) with uniform thickness of metal reflective film (200) on both sides. S4. Use an X-ray diffractometer to irradiate the metal reflective film (200) on both sides of the thin transparent strip (100) to produce diffraction phenomenon, and finally obtain the diffraction pattern. Analyze the diffraction pattern to obtain the arrangement information of atoms in the metal reflective film (200) on both sides. There are multiple gaps in the atomic arrangement distribution in the arrangement information, and there are corresponding overlaps in the multiple gaps in the arrangement information of the metal reflective film (200) on both sides. S5. Repeat the operation of S4 to perform diffraction on the metal reflective film (200) on both sides of the remaining thin transparent strip (100) to obtain the diffraction pattern of the metal reflective film (200) on both sides of the thin transparent strip (100). S6. Compare and analyze the diffraction patterns of two adjacent thin transparent strips (100) close to each other on both sides of the metal reflective film (200), select the part of the metal reflective film (200) with gaps between atoms in the two patterns, and record the length of the corresponding thin transparent strip (100). S7. Adjust the positions of two adjacent thin transparent strips (100) so that the gaps between the two adjacent thin transparent strips (100) are misaligned, so that the gaps in the arrangement information of the two metal reflective films (200) do not overlap. The non-gap positions of one side of the metal reflective film (200) correspond to the gaps of the other side of the metal reflective film (200). Finally, the gaps of the two metal reflective films (200) are mutually supplemented, so that the two metal reflective films (200) together can form a metal reflective film (200) with uniform atomic arrangement, ultimately forming several The whole is uniformly arranged but of inconsistent length. Select the part of S6 with overlapping lengths and draw two lines along the direction perpendicular to the several thin transparent strips (100) so that the gap part of the metal reflective film (200) is located between the two lines. Then draw two more lines along the direction perpendicular to the several thin transparent strips (100). These two lines are located on both sides of the two lines drawn in the first time. The part between the two lines drawn in the first time and the two lines drawn in the second time still contains the atomic gap part of the metal reflective film (200). Fix the several thin transparent strips (100) and then cut them along the second line so that the several thin transparent strips (100) present a rectangular structure. S8. Adhere transparent polymer adhesive (300) to both sides of several thin transparent strips (100) in S7 along the vertical direction, and form an optical element after curing.