Optical element and optical system

Abstract

The utility model discloses an optical element and an optical system, the optical element comprises an optical element body, the optical element body comprises a light transmission surface and a structural surface, and the light transmission surface and the structural surface jointly form an outer surface of the optical element body. The light transmission surface is used for transmitting light rays towards a light receiver, the structural surface is provided with a microstructure, and the microstructure is used for preventing the light rays projected to the structural surface from being transmitted towards the light transmission surface. According to the optical element provided by the embodiment of the utility model, the microstructure is arranged on the structural surface, so that stray light in the optical element body can be reduced, and stray light emitted from the emergent surface to the outside of the optical element body can be reduced, thereby improving the light emitting effect of the optical element, and improving the light emitting efficiency of the optical element when the optical element is applied to an optical system. The stray light emitted by the optical element is reduced, so that disordered imaging is not easy to form in the optical system, and the imaging effect of the optical system can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to optical technology field especially is optical element and optical system. BACKGROUND

[0002] In the optical equipment has multiple optical elements, taking three prisms as an example, three prisms include incident surface, exit surface, reflecting surface and two triangular end faces at both ends, the two end faces are smooth surfaces, stray light is easy to reflect towards incident surface, reflecting surface or even exit surface when exiting to the end face, thereby easy to affect the light emitting effect of optical element, even, when the optical element is applied in the optical system, the stray light of this part is easy to form disorderly imaging in the optical system, and then affect the imaging effect of the optical system. SUMMARY

[0003] The utility model discloses at least solve one of the technical problems in the prior art. For this purpose, one object of the utility model is to provide an optical element, which can reduce stray light inside the optical element body and reduce stray light emitted from the exit surface of the optical element body.

[0004] According to the optical element of the utility model embodiment, the optical element includes: an optical element body, the optical element body includes a light transmission surface and a structure surface, the light transmission surface and the structure surface jointly constitute an outer surface of the optical element body, the light transmission surface is used for transmitting light to a light receiver, and the structure surface is provided with a microstructure, and the microstructure is used for preventing light projected to the structure surface from being transmitted to the light transmission surface.

[0005] According to the optical element of the utility model embodiment, by arranging the microstructure on the structure surface, the stray light inside the optical element body and the stray light emitted from the exit surface of the optical element body can be reduced, so that the light emitting effect of the optical element is improved, and when the optical element is applied in an optical system, the disorderly imaging in the optical system can be prevented by reducing the stray light emitted by the optical element, so that the imaging effect of the optical system is improved.

[0006] In addition, the optical element according to the utility model can also have the following additional technical features:

[0007] In some embodiments of the utility model, the microstructure includes a groove, and the groove is constructed by inwardly recessing the structure surface.

[0008] In the above examples, by constructing the inwardly recessed groove on the structure surface, the stray light can be reflected on the groove surface of the groove in the optical element body, thereby reducing the reflection of the stray light in the optical element body towards the incident surface, the exit surface and the reflection surface, thereby reducing the stray light in the optical element body and reducing the stray light emitted by the optical element towards the outside, thereby improving the light emitting effect of the optical element, and when the optical element is applied in the optical system, the stray light emitted by the optical element can be reduced, so that the optical system is not easy to form a chaotic image, thereby improving the imaging effect of the optical system.

[0009] In some embodiments of the present application, the groove is a V-shaped groove, and a plurality of grooves are provided.

[0010] In the above examples, by providing a plurality of grooves and making the groove a V-shaped groove, when the stray light is emitted to the groove surface, the stray light can be continuously reflected between the adjacent two groove surfaces, thereby further reducing the reflection of the stray light in the optical element body towards the incident surface, the exit surface and the reflection surface, thereby improving the light emitting effect of the optical element.

[0011] In some embodiments of the present application, the included angle a between the first groove surface and the second groove surface of the groove satisfies: 0° < a ≤ 60°.

[0012] In the above examples, by making the included angle between the first groove surface and the second groove surface satisfy the above condition, on the one hand, the number of grooves can be increased, and on the other hand, when the stray light is incident to the first groove surface or the second groove surface, the stray light can be continuously reflected between the adjacent two groove surfaces, thereby reducing the reflection of the stray light in the optical element body towards the incident surface, the exit surface and the reflection surface, thereby improving the light emitting effect of the optical element.

[0013] In some embodiments of the present application, the first groove surface and the second groove surface are circularly arcuate, and the circular arc radius r1 satisfies: 0 μm < r1 ≤ 15 μm.

[0014] In the above examples, by making the circular arc radius satisfy the above condition, the reflection of the stray light in the optical element body towards the incident surface, the exit surface and the reflection surface can be reduced, thereby improving the light emitting effect of the optical element.

[0015] In some embodiments of the present application, the groove is a tapered groove, the connecting line from the tip of the tapered groove to the center point of the opening of the tapered groove is a center line, the included angle of the tip of the tapered groove in the projection plane parallel to the center line is an acute angle, a plurality of tapered grooves are provided, and the plurality of tapered grooves are arranged in a matrix.

[0016] In the above examples, by making the groove a tapered groove, the reflection direction of stray light can be changed well, and the reflection of stray light in the optical element body towards the incident surface, the exit surface and the reflection surface can be reduced, and by making the included angle of the tip of the tapered groove an acute angle, the reflection direction of stray light can be further changed, so that stray light can be well reflected between the groove surfaces of two adjacent tapered grooves, and the reflection of stray light in the optical element body towards the incident surface, the exit surface and the reflection surface can be further reduced, thereby improving the light output effect of the optical element.

[0017] In some embodiments of the present application, the circular arc at the acute angle of the tapered groove is transitioned, and the circular arc radius r2 satisfies: 0 < r2 < 15 μm.

[0018] In the above examples, by making the circular arc radius satisfy the above condition, the reflection of stray light in the optical element body towards the incident surface, the exit surface and the reflection surface can be well reduced, thereby improving the light output effect of the optical element.

[0019] In some embodiments of the present application, the outer surface of the microstructure is coated with a light-shielding coating.

[0020] In the above examples, by coating the outer surface of the microstructure with a light-shielding coating, the reflection and transmission of light can be reduced, thereby further reducing the reflection of stray light in the optical element body towards the incident surface, the exit surface and the reflection surface, and reducing the transmission of stray light by the structure surface. Thus, the stray light inside the optical element body can be reduced, and the stray light emitted by the optical element body towards the outside can be reduced, thereby improving the light output effect of the optical element, and when the optical element is applied in an optical system, by reducing the stray light emitted by the optical element, it can be difficult to form chaotic imaging in the optical system, and thus the imaging effect of the optical system can be improved.

[0021] In some embodiments of the present application, the microstructure is constructed by cutting, burning or etching the structure surface.

[0022] In the above examples, by processing the structure surface in the above manner, the microstructure can be well constructed on the structure surface, thereby well reflecting stray light to reduce the reflection of stray light in the optical element body towards the incident surface, the exit surface and the reflection surface, thereby improving the light output effect of the optical element.

[0023] The present application also provides an optical system with the optical element of the above embodiments.

[0024] According to the optical system of the present application, by providing the optical element of the above embodiments, by reducing the stray light emitted by the optical element, it can be difficult to form chaotic imaging in the optical system, and thus the imaging effect of the optical system can be improved.

[0025] Additional aspects and advantages of the present application will be set forth in part in the following description, and in part will become apparent to those skilled in the art upon examination of the following or can be learned by practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0026] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description, taken in conjunction with the following drawings, in which:

[0027] Figure 1 is a structural schematic diagram of a triangular prism of an embodiment of the present application.

[0028] Figure 2 is a structural schematic diagram of a triangular prism having a microstructure of an embodiment of the present application.

[0029] Figure 3 is a cross-sectional schematic diagram of a V-shaped groove of an embodiment of the present application.

[0030] Figure 4 is a schematic diagram of arrangement of a V-shaped groove of an embodiment of the present application.

[0031] Figure 5 is a schematic diagram of arrangement of a V-shaped groove of another embodiment of the present application.

[0032] Figure 6 is a schematic diagram of arrangement of a pyramid-shaped groove of an embodiment of the present application.

[0033] Figure 7 is a schematic diagram of arrangement of a conical groove of an embodiment of the present application.

[0034] REFERENCE NUMERALS:

[0035] 100, optical element; X, first direction; Y, second direction;

[0036] 1, light transfer surface; 11, incident surface; 12, exit surface; 13, reflecting surface;

[0037] 2, structure surface; 21, microstructure; 22, V-shaped groove; 221, first groove surface; 222, second groove surface; 23, conical groove; 231, pyramid-shaped groove; 232, conical groove. DETAILED DESCRIPTION

[0038] Embodiments of the present application will be described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals indicate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary and are intended to explain the present application, and should not be understood as limiting the present application.

[0039] In the description of the utility model, it needs to be understood that, the orientation or position relation indicated by the terms "upper", "lower", "front", "rear", "left", "right" and the like is the orientation or position relation based on the drawing shown, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore can not be understood as a limitation on the utility model. In addition, the terms "first", "second" are only for the purpose of description, and can not be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more features. In the description of the utility model, the meaning of "a plurality of" is two or more than two, unless otherwise specifically limited.

[0040] In the description of the utility model, it needs to be understood that, the orientation or position relation indicated by the terms "upper", "lower", "front", "rear", "left", "right" and the like is the orientation or position relation based on the drawing shown, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore can not be understood as a limitation on the utility model. In addition, the terms "first", "second" are only for the purpose of description, and can not be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more features. In the description of the utility model, the meaning of "a plurality of" is two or more than two, unless otherwise specifically limited.

[0041] Reference will now be made to Figures 1-7 The optical element 100 according to the embodiments of the utility model is described.

[0042] As Figure 1 And Figure 2 Indicated, wherein, Figure 1 The structure diagram of the triangular prism of the embodiments of the utility model is shown in the figure. The microstructure 21 in the figure is only schematic, for the convenience of understanding the scheme, and can not be regarded as a limitation on the present application, and Figures 3-7 Also only as an example, the following content is not described.

[0043] The optical element 100 according to the embodiments of the utility model includes an optical element body, the optical element body includes a light transmission surface 1 and a structure surface 2, the light transmission surface 1 and the structure surface 2 jointly constitute the outer surface of the optical element body, the light transmission surface 1 is used for transmitting light to the light receiver, the structure surface 2 is provided with a microstructure 21, and the microstructure 21 is used for hindering the light projected to the structure surface 2 from being transmitted to the light transmission surface 1.

[0044] Exemplarily, the light transmission surface 1 can include an incident surface 11, an exit surface 12 and a reflection surface 13, the incident surface 11 is a surface through which the light enters the optical element body, the exit surface 12 is a surface through which the light exits the optical element body, and the reflection surface 13 is a surface capable of reflecting the light. Further, after the light enters the optical element body from the incident surface 11, the light can be refracted towards the reflection surface 13. The reflection surface 13 can reflect the light. Exemplarily, the reflection surface 13 can have one, so that the reflection surface 13 can reflect the light towards the exit surface 12. Exemplarily, the reflection surface 13 can have two or more, so that the light can be reflected towards the exit surface 12 after passing through the two or more reflection surfaces 13. The reflection surface 13 can change and adjust the path of the light in the optical element body.

[0045] Exemplarily, the optical element 100 can include a prism, and the prism can include a polarization beam splitter, a triple prism, a dove prism, a pentagonal prism, a roof prism, a trapezoidal prism, etc., and the present application is not limited thereto.

[0046] For the structure surface 2, taking a triple prism as an example, the triple prism includes an incident surface 11, an exit surface 12, a reflection surface 13 and two triangular end surfaces at both ends, and the two triangular end surfaces are the structure surface 2. The structure surface 2 is a surface of the optical element body. When the light is projected towards the optical element 100, the light can pass through the incident surface 11 and the reflection surface 13 and exit from the exit surface 12. However, part of the stray light entering the triple prism can be projected towards the structure surface 2. In the related art, the structure surface 2 is often a smooth surface. Therefore, the stray light on the structure surface 2 can be reflected, for example, towards the incident surface 11, the reflection surface 13 or even the exit surface 12, thereby easily affecting the light output effect of the optical element 100. Even when the optical element 100 is applied to an optical system, this part of the stray light can easily form a chaotic image in the optical system, thereby affecting the imaging effect of the optical system.

[0047] In the application, the microstructure 21 is arranged on the structure surface 2 to hinder the light rays projected to the structure surface 2 from being transmitted to the light transmission surface 1. For example, when the light rays are projected to the structure surface 2, the light rays enter the microstructure 21, and the light rays entering the microstructure 21 can be reflected inside the microstructure 21, and only a small amount of light rays or even no light rays are emitted from the microstructure 21 to the light transmission surface 1, that is, the reflected light rays are reduced to the incident surface 11, the reflection surface 13 or even the exit surface 12. Therefore, by arranging the microstructure 21 on the structure surface 2, the stray light inside the optical element body and the stray light emitted from the optical element body to the outside through the exit surface 12 can be reduced, so that the light emission effect of the optical element 100 is improved, and when the optical element 100 is applied to an optical system, the stray imaging in the optical system can be reduced by reducing the stray light emitted from the optical element 100, so that the imaging effect of the optical system is improved.

[0048] According to the optical element 100 provided in the embodiment of the application, the microstructure 21 is arranged on the structure surface 2 to reduce the stray light inside the optical element body and the stray light emitted from the optical element body to the outside through the exit surface 12, so that the light emission effect of the optical element 100 is improved, and when the optical element 100 is applied to an optical system, the stray imaging in the optical system can be reduced by reducing the stray light emitted from the optical element 100, so that the imaging effect of the optical system is improved.

[0049] For example, the structure surface 2 can be partially provided with the microstructure 21, or can be entirely provided with the microstructure 21, which is not limited in the application.

[0050] In some embodiments of the application, the microstructure 21 includes a groove recessed inwardly from the structure surface 2. That is, the structure surface 2 is configured as a concave-convex surface by configuring the groove recessed inwardly from the structure surface 2. When the stray light is projected to the structure surface 2, the stray light can be reflected on the groove surface in the optical element body, and for example, when a plurality of grooves are arranged, the stray light can be continuously reflected between the groove surfaces of the adjacent two grooves, so that the stray light is reduced to be reflected to the incident surface 11, the exit surface 12 and the reflection surface 13 in the optical element body. Therefore, the stray light inside the optical element body and the stray light emitted from the optical element body to the outside can be reduced, so that the light emission effect of the optical element 100 is improved, and when the optical element 100 is applied to an optical system, the stray imaging in the optical system can be reduced by reducing the stray light emitted from the optical element 100, so that the imaging effect of the optical system is improved.

[0051] In the above examples, by constructing the inwardly recessed groove on the structure surface 2, the stray light can be reflected by the groove surface in the optical element body, thereby reducing the reflection of the stray light in the optical element body towards the incident surface 11, the exit surface 12 and the reflection surface 13, thereby reducing the stray light inside the optical element body and the stray light emitted by the optical element body towards the outside, thereby improving the light emission effect of the optical element 100, and when the optical element 100 is applied in an optical system, by reducing the stray light emitted by the optical element 100, it is not easy to form a chaotic image in the optical system, thereby improving the imaging effect of the optical system.

[0052] In some embodiments of the present application, as shown in Figures 2-5 The groove is a V-shaped groove 22, and the groove is provided with a plurality of grooves, and the plurality of grooves are sequentially arranged in a direction perpendicular to the length of the groove.

[0053] That is, the groove is a long strip-shaped groove structure, and the projection of the cross section of the groove in the projection plane perpendicular to the length direction of the groove is a triangle, and the groove is provided with a plurality of grooves, and the plurality of grooves are sequentially arranged in a direction perpendicular to the length of the groove. For example, the plurality of grooves can be arranged with or without spacing, and the present application does not limit this.

[0054] For example, taking a triangular prism as an example, both triangular end faces of the triangular prism are structure surfaces 2, and the microstructure 21 can be arranged on both structure surfaces 2. For the length direction of the groove, the length direction of the groove can be parallel to the incident surface 11 or have an angle with the incident surface 11, and the present application does not limit this.

[0055] Further referring to Figure 4 and Figure 5 , a first direction X and a second direction Y in a plane are taken as reference, Figure 4 In the example of the structure surface 2, the groove is a long strip-shaped groove structure extending along the first direction X, and when there are a plurality of grooves, the plurality of grooves are arranged with spacing along the second direction Y, while in the example of the structure surface 2, Figure 5 In the example of the structure surface 2, the groove is a long strip-shaped groove structure extending along the second direction Y, and when there are a plurality of grooves, the plurality of grooves are arranged with spacing along the first direction X.

[0056] For the length direction of the groove, it can be understood that when the structure surface 2 is a rough surface, the stray light incident to the structure surface 2 can be better reduced in reflection towards the exit surface 12, and thus the application does not limit the length direction of the groove. Further, when the stray light exits to the groove surface, the stray light can be better reflected between the adjacent two groove surfaces, thereby further reducing the stray light in the optical element body towards the incident surface 11, the exit surface 12 and the reflection surface 13, thereby reducing the stray light inside the optical element body and the stray light outside the optical element body, thereby improving the light output effect of the optical element 100, and when the optical element 100 is applied in the optical system, the stray light emitted by the optical element 100 can be reduced to make it difficult to form a chaotic image in the optical system, thereby improving the imaging effect of the optical system.

[0057] In the above example, by providing a plurality of grooves and making the groove a V-shaped groove 22, when the stray light exits to the groove surface, the stray light can be better reflected between the adjacent two groove surfaces, thereby further reducing the stray light in the optical element body towards the incident surface 11, the exit surface 12 and the reflection surface 13, thereby improving the light output effect of the optical element 100.

[0058] In some embodiments of the present application, as shown in Figure 3 The included angle a between the first groove surface 221 and the second groove surface 222 satisfies: 0° < a ≤ 60°.

[0059] Exemplarily, the included angle a between the first groove surface 221 and the second groove surface 222 can be 10°, 15°, 20°, 25°, 30°, 35°, 40°, 45°, 50°, 55°, 60°.

[0060] In the above example, by making the included angle between the first groove surface 221 and the second groove surface 222 satisfy the above condition, on the one hand, the number of grooves can be better increased, and on the other hand, when the stray light is incident to the first groove surface 221 or the second groove surface 222, the stray light can be better reflected between the adjacent two groove surfaces, thereby better reducing the stray light in the optical element body towards the incident surface 11, the exit surface 12 and the reflection surface 13, thereby improving the light output effect of the optical element 100.

[0061] In some embodiments of the present application, the first groove surface 221 and the second groove surface 222 are circularly arcuate, and the circular arc radius r1 satisfies: 0 < r1 ≤ 15 μm.

[0062] That is, when the V-shaped groove 22 is processed, the tip of the V-shaped groove 22 between the first groove surface 221 and the second groove surface 222 also affects the reflection of stray light, and by making the tip of the V-shaped groove 22 arc transition and making the arc radius meet the above condition, the reflection of stray light in the optical element body towards the incident surface 11, the exit surface 12 and the reflecting surface 13 can be better reduced, thereby reducing the stray light inside the optical element body and the stray light emitted by the optical element body towards the outside, thereby improving the light emission effect of the optical element 100, and when the optical element 100 is applied in an optical system, by reducing the stray light emitted by the optical element 100, it can be difficult to form a chaotic image in the optical system, thereby improving the imaging effect of the optical system.

[0063] Exemplarily, the arc radius r1 can be 1 μm, 2 μm, 3 μm, 4 μm, 5 μm, 6 μm, 7 μm, 8 μm, 9 μm, 10 μm, 11 μm, 12 μm, 13 μm, 14 μm, 15 μm.

[0064] In the above examples, by making the arc radius meet the above condition, the reflection of stray light in the optical element body towards the incident surface 11, the exit surface 12 and the reflecting surface 13 can be better reduced, thereby improving the light emission effect of the optical element 100.

[0065] In some embodiments of the present application, as shown in Figure 6 and Figure 7 As shown, the groove is a tapered groove 23, the line from the tip of the tapered groove 23 to the center point of the opening of the tapered groove 23 is a center line, in the projection plane parallel to the center line, the included angle of the tip of the tapered groove 23 is an acute angle, the tapered groove 23 is provided with a plurality of, and the plurality of tapered grooves 23 are arranged in a row.

[0066] Exemplarily, the tapered groove 23 can be a pyramid groove 231 or a circular cone groove 232, wherein, taking the circular cone groove 232 as an example, the center line can be the rotation axis of the circular cone groove 232, in the projection plane parallel to the rotation axis, by making the included angle of the tip of the circular cone groove 232 be an acute angle, the reflection of stray light in the optical element body towards the incident surface 11, the exit surface 12 and the reflecting surface 13 can be better reduced, thereby improving the light emission effect of the optical element 100.

[0067] Exemplarily, the included angle can be 10°, 15°, 20°, 25°, 30°, 35°, 40°, 45°, 50°, 55°, 60°, etc., which is not limited in the present application.

[0068] In the above examples, by making the groove a tapered groove 23, the reflection direction of stray light can be better changed, and the reflection of stray light in the optical element body towards the incident surface 11, the exit surface 12 and the reflection surface 13 can be reduced. When the included angle of the tip of the tapered groove 23 is an acute angle, the reflection direction of stray light can be further changed, so that stray light can be better reflected between the groove surfaces of two adjacent tapered grooves 23, thereby reducing the reflection of stray light in the optical element body towards the incident surface 11, the exit surface 12 and the reflection surface 13, and improving the light output effect of the optical element 100.

[0069] In some embodiments of the present application, the tapered groove 23 has a circular arc transition at the acute angle, and the circular arc radius r2 satisfies: 0 < r2 < 15 μm.

[0070] Exemplarily, the circular arc radius r2 can be 1 μm, 2 μm, 3 μm, 4 μm, 5 μm, 6 μm, 7 μm, 8 μm, 9 μm, 10 μm, 11 μm, 12 μm, 13 μm, 14 μm, 15 μm.

[0071] In the above examples, by making the circular arc radius satisfy the above condition, the reflection of stray light in the optical element body towards the incident surface 11, the exit surface 12 and the reflection surface 13 can be better reduced, thereby improving the light output effect of the optical element 100.

[0072] In some embodiments of the present application, the outer surface of the microstructure 21 is coated with a light-shielding coating.

[0073] Exemplarily, the light-shielding coating can be black light-absorbing ink, which usually contains pigment or dye components that can absorb visible light. These components can effectively absorb light of most wavelengths, reducing reflection and transmission of light, thereby achieving good light-shielding effect. Black light-absorbing ink has good printability and can be uniformly coated on different substrate surfaces through various printing processes such as screen printing, inkjet printing, etc., forming a uniform light-shielding coating. This makes it convenient to apply to objects of various shapes and materials, meeting the light-shielding needs of different products.

[0074] Alternatively, the light-shielding coating on the outer surface of the microstructure 21 can also be coated with other materials, such as polymer light-shielding coating, carbon-based light-shielding coating, etc., which are not limited by the present application.

[0075] In the above example, by coating the outer surface of the microstructure 21 with the light-shielding coating, the reflection and transmission of light can be reduced, thereby further reducing the reflection of stray light in the optical element body towards the incident surface 11, the exit surface 12 and the reflection surface 13, and reducing the transmission of stray light by the structure surface 2, so that the stray light in the optical element body can be reduced, and the stray light emitted by the optical element body to the outside can be reduced, thereby improving the light emission effect of the optical element 100, and when the optical element 100 is applied in an optical system, by reducing the stray light emitted by the optical element 100, it can be difficult to form chaotic imaging in the optical system, thereby improving the imaging effect of the optical system.

[0076] In some embodiments of the present application, the microstructure 21 is formed by cutting, burning or etching the structure surface 2.

[0077] In the above example, by treating the structure surface 2 in the above manner, the microstructure 21 can be well formed on the structure surface 2, thereby well reflecting the stray light to reduce the reflection of stray light in the optical element body towards the incident surface 11, the exit surface 12 and the reflection surface 13, thereby improving the light emission effect of the optical element 100.

[0078] The present application also provides an optical system comprising the optical element 100 of the above embodiments.

[0079] According to the optical system of the present application, by providing the optical element 100 of the above embodiments, by reducing the stray light emitted by the optical element 100, it can be difficult to form chaotic imaging in the optical system, thereby improving the imaging effect of the optical system.

[0080] Exemplarily, the optical element 100 can be made of glass or plastic, and the present application does not limit the material.

[0081] The other configurations and operations of the optical element 100 and the optical system of the present application are known to those skilled in the art, and will not be described in detail here.

[0082] In the description of the present application, the description of the terms "some embodiments", "optionally", "further", "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiments or examples are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0083] Although the embodiments of the utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the utility model, and the scope of the utility model is defined by the claims and their equivalents.

Claims

1. An optical element (100), characterized in that, The application relates to an optical element (100) comprising: an optical element body comprising a light transmission surface (1) and a structure surface (2), the light transmission surface (1) and the structure surface (2) jointly constituting an outer surface of the optical element body, the light transmission surface (1) being used for transmitting light rays towards a light receiver, and the structure surface (2) being provided with microstructures (21) for impeding the transmission of light rays projected onto the structure surface (2) towards the light transmission surface (1).

2. The optical element (100) according to claim 1, characterized in that The microstructures (21) comprise grooves which are recessed inwardly by the structure surface (2).

3. The optical element (100) according to claim 2, characterized in that The grooves are V-shaped grooves (22), and a plurality of the grooves are arranged in sequence along a direction perpendicular to the length of the grooves.

4. The optical element (100) according to claim 3, characterized in that An included angle a between a first groove surface (221) and a second groove surface (222) of the groove satisfies 0° < a <= 60°.

5. The optical element (100) according to claim 4, characterized in that The first groove surface (221) and the second groove surface (222) are circularly arcuate in transition, and a circular arc radius r1 satisfies 0 <= r1 <= 15 mu m.

6. The optical element (100) according to claim 2, characterized in that The grooves are tapered grooves (23), a connecting line from a groove tip of the tapered groove (23) to a center point of an opening of the tapered groove (23) is a center line, an included angle of a tip portion of the tapered groove (23) is an acute angle in a projection plane parallel to the center line, a plurality of the tapered grooves (23) are arranged in a matrix.

7. The optical element (100) according to claim 6, characterized in that The tapered groove (23) is circularly arcuate in transition at a sharp corner, and a circular arc radius r2 satisfies 0 <= r2 <= 15 mu m.

8. The optical element (100) according to claim 1, characterized in that An outer surface of the microstructure (21) is coated with a light-shielding coating.

9. The optical element (100) according to claim 1, characterized in that The microstructure (21) is cut, burned or etched by the structure surface (2).

10. An optical system characterized by, The application further relates to an optical element (100) according to any one of claims 1-9.

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