Optical part and lighting device

Abstract

The utility model discloses an optical piece and a lighting device, the optical piece comprises a semi-reflecting and semi-transmitting part, the semi-reflecting and semi-transmitting part comprises an enclosed reflecting wall and a plurality of continuously arranged semi-reflecting and semi-transmitting structures on the surface of the reflecting wall; two ends of the reflecting wall are provided with a light outlet and a light inlet; and the semi-reflecting and semi-transmitting structure is used for totally reflecting part of light entering from the light inlet and then emitting from the light outlet, and partially refracting and then emitting from the surface of the semi-reflecting and semi-transmitting structure, so that the semi-transmitting and semi-reflecting effect of the light is realized, the emergent light scattered on the optical part is reduced, the influence of glare is reduced, and the illumination experience is improved.

Description

Technical Field

[0001] This utility model relates to the field of lighting technology, and in particular to an optical component and a lighting device. Background Technology

[0002] Light-emitting diode (LED) lighting fixtures are becoming increasingly widely used. In order to improve the light output of the lighting fixtures, reflector covers are usually installed around the lighting fixtures to perform secondary light distribution on the light emitted by the light source.

[0003] Existing reflector lampshades, in order to meet the requirements of basic lighting, usually use more transparent materials. However, this can also cause the emitted light to be too scattered, resulting in glare and affecting the lighting experience. Utility Model Content

[0004] This invention provides an optical component and a lighting device that achieves a semi-transparent and semi-reflective effect of light, reduces the scattered emitted light on the optical component, reduces the impact of glare, and improves the lighting experience.

[0005] In a first aspect, the present invention provides an optical component, comprising: a semi-reflective and semi-transparent portion, wherein the semi-reflective and semi-transparent portion includes an enclosing reflective wall and a plurality of continuously arranged semi-reflective and semi-transparent structures on the surface of the reflective wall.

[0006] The enclosed reflective wall has a light outlet and a light inlet at both ends.

[0007] The semi-reflective and semi-transparent structure is used to partially reflect the light entering through the light inlet and then emit it through the light outlet, and partially refract it and then emit it through the surface of the semi-reflective and semi-transparent structure.

[0008] Optionally, the semi-reflective and semi-transparent structure includes a first sawtooth structure and a second sawtooth structure; the two ends of the first sawtooth structure and the second sawtooth structure extend to the light inlet and the light outlet;

[0009] At least one second sawtooth structure is provided between at least one group of adjacent first sawtooth structures; or at least one first sawtooth structure is provided between at least one group of adjacent second sawtooth structures.

[0010] The first sawtooth structure is used to reflect part of the light rays completely before they are emitted from the light outlet; the second sawtooth structure is used to refract part of the light rays before they are emitted from the surface of the second sawtooth structure.

[0011] Optionally, the first sawtooth structure includes a first reflective surface and a second reflective surface, the first reflective surface and the second reflective surface intersecting at a first included angle; the first reflective surface and the second reflective surface are total reflective surfaces;

[0012] The second sawtooth structure includes a third reflective surface and a fourth reflective surface, which intersect at a second included angle; at least one of the third reflective surface and the fourth reflective surface is a transmissive surface.

[0013] Optionally, the first included angle ranges from 86 to 94 degrees; the second included angle ranges from 1 to 85 degrees or from 95 to 179 degrees.

[0014] Optionally, the semi-reflective and semi-transparent structure includes a third sawtooth structure; the two ends of the third sawtooth structure extend to the light inlet and the light outlet;

[0015] The third sawtooth structure includes a fifth reflecting surface and a sixth reflecting surface. The fifth reflecting surface and the sixth reflecting surface intersect at an angle, which is rounded. The fifth reflecting surface and the sixth reflecting surface are total reflection surfaces. The surface corresponding to the rounded corner is a transmission surface.

[0016] Optionally, the semi-reflective and semi-transparent structure further includes a fourth sawtooth structure, the two ends of which extend to the light inlet and the light outlet;

[0017] At least one third sawtooth structure is provided between at least one group of adjacent fourth sawtooth structures; or at least one fourth sawtooth structure is provided between at least one group of adjacent third sawtooth structures.

[0018] The fourth sawtooth structure is used to reflect part of the light rays completely before they are emitted from the light outlet.

[0019] Optionally, the optical component further includes a first light mixing section and a second light mixing section; the first light mixing section is disposed at the light inlet, and the second light mixing section is disposed at the light outlet.

[0020] Optionally, the second light-mixing part is planar or hemispherical.

[0021] Optionally, the semi-reflective and semi-transparent portion is a transparent semi-reflective and semi-transparent portion.

[0022] Secondly, this utility model provides a lighting device, including a light source module and the optical components described in any embodiment of this utility model; the light source module is disposed on the side of the light inlet away from the first light mixing part, and the light emitted from the light source module can enter the light inlet.

[0023] The optical component provided in this embodiment of the invention redistributes incident light through a semi-reflective and semi-transparent section. The semi-reflective and semi-transparent section includes an enclosing reflective wall and multiple continuously arranged semi-reflective and semi-transparent structures on the surface of the reflective wall. A portion of the incident light can undergo total internal reflection on the semi-reflective and semi-transparent structure and then be emitted from the light outlet, while a portion of the light can be transmitted through the semi-reflective and semi-transparent structure. The semi-reflective and semi-transparent structure is used to achieve a semi-transparent and semi-reflective effect of light, reducing the scattered outgoing light on the optical component, reducing the impact of glare, and improving the lighting experience. Attached Figure Description

[0024] Figure 1 This invention provides a schematic diagram of the structure of an optical component according to an embodiment of the present invention;

[0025] Figure 2 A top-view structural diagram of an optical component is provided for an embodiment of this utility model;

[0026] Figure 3 A cross-sectional structural diagram of a first sawtooth structure provided in an embodiment of this utility model;

[0027] Figure 4 This invention provides a schematic diagram of the optical path of a first sawtooth structure cross-section for further embodiments of the present invention.

[0028] Figure 5 This invention provides a schematic diagram of the optical path of a first sawtooth structure cross-section for further embodiments of the present invention.

[0029] Figure 6 A schematic diagram of the optical path of a second sawtooth structure cross-section provided in an embodiment of this utility model;

[0030] Figure 7 A schematic diagram of the optical path of a third sawtooth structure cross section provided in an embodiment of this utility model;

[0031] Figure 8 A schematic diagram of the structure of another optical component is provided for an embodiment of this utility model;

[0032] Figure 9 This is another schematic diagram of an illumination optical path provided by an embodiment of the present utility model;

[0033] Figure 10 This is a schematic diagram of the arrangement of a surface-mount LED provided for an embodiment of the present utility model. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0035] Figure 1 This invention provides a schematic diagram of the structure of an optical component according to an embodiment of the present invention. Figure 2 This invention provides a top-view structural schematic diagram of an optical component according to an embodiment of the present invention. (See attached diagram.) Figure 1 and Figure 2 It includes: a semi-reflective and semi-transparent portion 120; the semi-reflective and semi-transparent portion 120 includes an enclosing reflective wall 123 and a plurality of continuously arranged semi-reflective and semi-transparent structures 122 on the surface of the reflective wall 123.

[0036] The reflective wall 123 has an exit port 125 and an entrance port 124 at both ends; the semi-reflective and semi-transparent structure 122 is used to partially reflect the light entering through the entrance port 124 and then emit it through the exit port 125, and partially refract it and then emit it through the surface of the semi-reflective and semi-transparent structure 122.

[0037] Specifically, the reflective wall 123 encloses a barrel shape with an inlet 124 and an outlet 125 at both ends. The opening diameter of the outlet 125 can be the same as that of the inlet 124, or it can be larger than that of the inlet 124, which is beneficial for the outgoing light to exit from the outlet. Along the outer surface of the reflective wall 123, i.e., in the circumferential direction, multiple semi-reflective and semi-transparent structures 122 are continuously arranged. The semi-reflective and semi-transparent structures 122 can provide a total reflection surface and a transmission surface. Some incident light can undergo total reflection on the total reflection surface and then re-enter the optical cavity 121, finally exiting from the outlet 125. Some incident light can undergo transmission on the transmission surface and then exit from the surface of the semi-reflective and semi-transparent structure 122. In other words, part of the incident light can exit from the outlet 125 and part can exit from the surface of the semi-reflective and semi-transparent section 120. The ratio of light emitted from the light outlet 125 to the reflective surface 123 can be controlled by adjusting the ratio of the total reflection surface to the transmission surface, thereby controlling the amount of glare and reducing it. For example, the semi-reflective structure 122 can be a sawtooth structure, providing both a total reflection surface and a transmission surface. For instance, by adjusting the angle between the intersecting surfaces of the sawtooth structure, light can undergo total reflection and / or transmission after passing through the sawtooth structure. The total reflection and transmission phenomena of the semi-reflective section 120 are achieved through the principles of reflection and refraction of light between different media.

[0038] The optical component provided in this embodiment of the present invention redistributes incident light through a semi-reflective and semi-transparent section 120. The semi-reflective and semi-transparent section 120 includes an enclosing reflective wall 123 and a plurality of continuously arranged semi-reflective and semi-transparent structures 122 on the surface of the reflective wall 123. A portion of the incident light can undergo total internal reflection on the semi-reflective and semi-transparent structure 122 and then be emitted from the light outlet 125. A portion of the light can also be transmitted through the semi-reflective and semi-transparent structure 122. The semi-reflective and semi-transparent structure 122 is used to achieve a semi-transparent and semi-reflective effect of light, reduce the dispersion of outgoing light, reduce the impact of glare, and improve the lighting experience.

[0039] Optionally, the semi-reflective and semi-transparent structure 122 includes a first sawtooth structure 210 and a second sawtooth structure 220; the two ends of the first sawtooth structure 210 and the second sawtooth structure 220 extend to the light inlet 124 and the light outlet 125.

[0040] At least one second serrated structure 220 is provided between at least one group of adjacent first serrated structures 210; or at least one first serrated structure 210 is provided between at least one group of adjacent second serrated structures 220.

[0041] The first sawtooth structure 210 is used to reflect part of the light rays completely before they are emitted from the light outlet 125; the second sawtooth structure 220 is used to refract part of the light rays before they are emitted from the surface of the semi-reflective and semi-transparent structure 122.

[0042] Specifically, the first sawtooth structure 210 and the second sawtooth structure 220 are distributed on the reflective wall 123 between the light inlet 124 and the light outlet 125. That is to say, the first sawtooth structure 210 and the second sawtooth structure 220 can extend into a strip between the light inlet 124 and the light outlet 125, thereby allowing light adjustment to be made on the entire reflective wall 123. Figure 3 A schematic diagram of the optical path of a first sawtooth structure cross-section is provided for an embodiment of this utility model. See [link / reference]. Figure 3 The first sawtooth structure 210 provides a total internal reflection surface, enabling total internal reflection of light. For example, the cross-section of the first sawtooth structure 210 is approximately triangular. The first sawtooth structure 210 includes a first reflecting surface 1221 and a second reflecting surface 1222. The first reflecting surface 1221 and the second reflecting surface 1222 have a first included angle α with the reflecting wall 123. By adjusting the size of the first included angle α, light incident on the first sawtooth structure 210 can undergo one total internal reflection via the first reflecting surface 1221 and then another total internal reflection via the second reflecting surface 1222, allowing the light to return to the space within the reflecting wall 123. For example, when the first included angle α is 90 degrees, better double total internal reflection can be obtained. See [link to documentation]. Figure 3The first included angle α is 90 degrees. In some embodiments, the critical angle for total internal reflection can be determined based on the material of the first sawtooth structure 210, and the first included angle α can also be a non-perpendicular angle. Figure 4 A schematic diagram of the optical path of another first sawtooth structure cross-section is provided for an embodiment of this utility model. See [link to schematic diagram]. Figure 4 The first included angle α is 87 degrees. The incident and outgoing rays that undergo total internal reflection through the first sawtooth structure 210 will have an included angle. Figure 5 A schematic diagram of the optical path of another first sawtooth structure cross-section is provided for an embodiment of this utility model. See [link to schematic diagram]. Figure 5 The first included angle α is 93 degrees. The incident and outgoing rays that undergo total internal reflection through the first sawtooth structure 210 will have an included angle. Through simulation tests, it can be found that the first reflecting surface 1221 and the second reflecting surface 1222 can be total internal reflection surfaces within the range of 86-94 degrees of the first included angle α.

[0043] Similarly, the second sawtooth structure 220 is used to provide a transmission surface, which can transmit part of the light. Figure 6 This is a schematic diagram of the optical path of a second sawtooth structure cross-section provided in an embodiment of the present invention. Exemplarily, the cross-section of the second sawtooth structure 220 is approximately triangular. The second sawtooth structure 220 includes a third reflecting surface 1223 and a fourth reflecting surface 1224. The third reflecting surface 1223 and the fourth reflecting surface 1224 form an angle with the reflecting wall 123. The third reflecting surface 1223 and the fourth reflecting surface 1224 intersect and form a second angle b. By adjusting the size of the second angle b, the light incident on the second sawtooth structure 220 can be transmitted at least once after passing through the third reflecting surface 1223 and the fourth reflecting surface 1224. Figure 6For example, a schematic diagram of the light path with a second included angle b of 98 degrees is shown. The angle of incidence of the light rays incident on the second sawtooth structure 220 when passing through the third reflecting surface 1223 is smaller than the angle of incidence of the light rays incident on the first reflecting surface 1221 of the first sawtooth structure 210. Therefore, transmission is more likely to occur at the third reflecting surface 1223, and the transmission phenomenon becomes more obvious as the second included angle b increases. That is to say, when the incident light rays pass through the third reflecting surface 1223, there is a process of reflection and refraction. Part of the light rays exit from the third reflecting surface 1223, and part of the light rays are reflected from the third reflecting surface 1223 to the fourth reflecting surface 1224. For example, when the second included angle b is outside the range of 86-94 degrees, that is, when the second included angle b is between 1-85 degrees or 95-179 degrees, at least one surface will transmit the light rays. By designing the arrangement of the first sawtooth structure 210 and the second sawtooth structure 220 on the reflective wall 123, for example, at least one second sawtooth structure 220 is set between adjacent first sawtooth structures 210, or at least one first sawtooth structure 210 is set between adjacent second sawtooth structures 220, or multiple first sawtooth structures 210 are grouped together and at least one second sawtooth structure 220 is set between adjacent groups, or multiple second sawtooth structures 220 are grouped together and at least one first sawtooth structure 210 is set between adjacent groups, or any combination of the above methods, the regional distribution of the first sawtooth structure 210 and the regional distribution of the second sawtooth structure 220 can be used to control the light emission range of total reflection and transmission divergence, respectively, to achieve a light emission effect of half reflection and half transmission. Furthermore, the ratio of the first sawtooth structure 210 and the second sawtooth structure 220 can be used to control the ratio of the light emission amount of total reflection to the light emission amount of projection, thereby controlling the magnitude of glare and reducing glare.

[0044] As an optional embodiment, Figure 7 This is a schematic diagram of the optical path of a third sawtooth structure cross-section provided in an embodiment of the present invention. The semi-reflective and semi-transparent structure 122 includes a third sawtooth structure 310. The two ends of the third sawtooth structure 310 extend to the light inlet 124 and the light outlet 125. The third sawtooth structure 310 includes a fifth reflective surface 1225 and a sixth reflective surface 1226. The fifth reflective surface 1225 and the sixth reflective surface 1226 intersect at an angle, which can be set as a rounded corner. The fifth reflective surface 1225 and the sixth reflective surface 1226 are total reflective surfaces. The surface corresponding to the rounded corner is a transmissive surface.

[0045] Specifically, the third serrated structure 310 provides both a total reflection surface and a transmission surface. Some light can undergo total reflection or transmission through the third serrated structure 310. For example, the cross-section of the third serrated structure 310 is approximately triangular, with rounded corners at the angles furthest from the reflective wall 123. The reflective surfaces on either side of the rounded corners are the fifth reflective surface 1225 and the sixth reflective surface 1226, respectively. As total reflection surfaces, a portion of the light undergoes one total reflection at the fifth reflective surface 1225 and another at the sixth reflective surface 1226, returning to the space within the reflective wall 123. A portion of the light entering the position corresponding to the rounded corner will be transmitted at that position according to the principle of light transmission. The larger the rounded corner, the more light is transmitted. Therefore, by adjusting the size of the rounded corner, the proportion of transmitted light is changed, thereby controlling the magnitude of glare. For example, in order to improve the total internal reflection effect of the fifth reflecting surface 1225 and the sixth reflecting surface 1226, the intersection angle c of the extended surfaces of the fifth reflecting surface 1225 and the sixth reflecting surface 1226 can be the same as the first angle a.

[0046] Figure 8 A schematic diagram of another optical component is provided for an embodiment of this utility model. See also: Figure 8 The optical component also includes a first light mixing section 110 and a second light mixing section 130; the first light mixing section 110 is disposed at the light inlet 124, and the second light mixing section 130 is disposed at the light outlet 125.

[0047] Specifically, the first light-mixing part 110 and the semi-reflective and semi-transparent part 120 can be integrally injection molded from the same material. For example, the semi-reflective and semi-transparent part 120 can be made of a transparent material, such as polycarbonate (PC) or polymethyl methacrylate (PMMA). The orthographic projection of the first light-mixing part 110 onto the plane of the light inlet 124 covers the light inlet 124, and a receiving space can be formed between the first light-mixing part 110 and the light inlet 124, which can serve as a light-mixing cavity. For example, in this embodiment of the invention, the first light-mixing part 110 protrudes into the space enclosed by the semi-reflective and semi-transparent part 120, forming a hemispherical light-mixing cavity 111. The light entering through the light inlet 124 is mixed in the light-mixing cavity and then enters the space enclosed by the reflective wall 123 through the first light-mixing part 110. For example, the surface of the first light mixing section 110 can be a frosted surface, which provides a diffuse reflection surface, thereby improving the light mixing effect of the incident light.

[0048] The light emitted from the light outlet 125 is then mixed by the second light mixing section 130. The second light mixing section 130 mixes the light directly incident from the light source with the light emitted after total internal reflection, improving the uniformity of the emitted light and reducing glare. For example, the second light mixing section 130 can be planar, hemispherical, or other shapes, serving both a light mixing function and a decorative purpose. For example, the second light mixing section 130 can be a milky white hemispherical shape.

[0049] As an optional embodiment, Figure 9 This is another schematic diagram of an illumination optical path provided by an embodiment of the present utility model, combined with Figure 2 and Figure 7 The reflective wall 123 can be equipped with only a third sawtooth structure 310. The third sawtooth structure 310 is arranged circumferentially on the reflective wall 123, achieving a semi-reflective and semi-transparent light emission effect. Light emitted from the light outlet 124 passes through the first light mixing section 110 and enters the third sawtooth structure 310 of the semi-reflective and semi-transparent section. A portion of the light undergoes total internal reflection at the fifth reflective surface 1225 and then again at the sixth reflective surface 1226, returning to the light cavity 121. The light emitted from the light outlet 125 then passes through the second light mixing section 130 for mixing. The second light mixing section 130 mixes the light directly irradiated by the light source with the light emitted after total internal reflection. A portion of the light enters the position corresponding to the rounded corner; according to the principle of light transmission, light will be transmitted out at the position corresponding to the rounded corner. By adjusting the size of the rounded corners of the third sawtooth structure 310 in different areas, the range of light emission from total reflection and transmission can be adjusted to achieve a semi-reflective and semi-transparent light emission effect and reduce glare.

[0050] Optionally, the semi-reflective and semi-transparent structure also includes a fourth sawtooth structure. This fourth sawtooth structure can have the same structure as the first sawtooth structure 210, both used to reflect a portion of the light through total internal reflection before exiting through the light outlet 125. In the following text, the fourth sawtooth structure will be referred to as the first sawtooth structure 210. By designing the arrangement of the first sawtooth structure 210 and the third sawtooth structure 310 on the reflective wall 123—for example, at least one third sawtooth structure 310 can be placed between adjacent first sawtooth structures 210, or at least one first sawtooth structure 210 can be placed between adjacent third sawtooth structures 310, or multiple first sawtooth structures 210 can be grouped together with at least one third sawtooth structure 310 between adjacent groups, or multiple third sawtooth structures 310 can be grouped together with at least one first sawtooth structure 210 between adjacent groups, or any combination of the above methods—the regional distribution of the first sawtooth structure 210 and the regional distribution of the third sawtooth structure 310 can respectively control the light emission range of total internal reflection and transmission divergence. As an optional embodiment, the third sawtooth structure 310 can also be arranged in combination with the second sawtooth structure 220. For example, at least one third sawtooth structure 310 can be arranged between adjacent second sawtooth structures 220, or at least one second sawtooth structure 220 can be arranged between adjacent third sawtooth structures 310, or multiple second sawtooth structures 220 can be grouped together and at least one third sawtooth structure 310 can be arranged between adjacent groups, or multiple third sawtooth structures 310 can be grouped together and at least one second sawtooth structure 220 can be arranged between adjacent groups, or any combination of the above methods. The light emission range of total internal reflection and transmission divergence can be controlled by utilizing the regional distribution of the second sawtooth structure 220 and the regional distribution of the third sawtooth structure 310, respectively.

[0051] This utility model embodiment also provides a lighting device, combined with Figure 8 The lighting device includes a light source module 140 and optical components in any embodiment of the present invention; the light source module 140 is disposed on the side of the light inlet 124 away from the first light mixing part 110, and the light emitted from the light source module can enter the light inlet 124.

[0052] Specifically, the light source module 140 is connected to the optical components. The light source module 140 includes a light source 141 and circuit components. The light source 141 of the light source module 140 can be disposed at the light inlet 124. The light emitted from the light source 141 can pass through the first light mixing section 110. For example, the first light mixing section 110 and the semi-reflective and semi-transparent section 120 can be integrally molded from the same material. The orthographic projection of the first light mixing section 110 on the plane where the light inlet 124 is located covers the light inlet 124. A receiving space can be formed between the first light mixing section 110 and the light inlet 124, and this receiving space can serve as a light mixing cavity. For example, in this embodiment of the present invention, the first light mixing section 110 protrudes into the space enclosed by the semi-reflective and semi-transparent section 120, forming a hemispherical light mixing cavity 111. The light source 141 of the light source module 140 is disposed on the side of the light mixing cavity 111 near the light inlet 124. The light emitted from the light source module 140 can enter the light mixing cavity 111, pass through the first light mixing section 110, and then enter the light cavity 121 within the semi-reflective and semi-transparent section 120. The circuit components of the light source module 140 can be disposed on the side of the light source 141 away from the light inlet 124, covered by the housing 150. The housing 150 protects the circuit components, and when repairing or replacing components, the housing 150 can be removed to maintain the light source module 140.

[0053] Optionally, the light source 141 of the light source module 140 can be a surface-mount LED, and multiple LEDs 1411 can be evenly arranged on the PCB circuit board. Figure 10 This is a schematic diagram of a surface-mount LED arrangement according to an embodiment of the present invention, wherein the number of LEDs 1411 can be adjusted according to power. Exemplarily, the light emission color of LEDs 1411 includes at least one or a combination of white, red, green, and blue. For example, the light source 141 can be a white LED, or a colored light composed of red, green, and blue LEDs, or an adjustable light source composed of five LEDs (red, green, blue, white, and white), or other forms of light source.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. An optical component, characterized in that, include: A semi-reflective and semi-transparent section, the semi-reflective and semi-transparent section including an enclosing reflective wall and a plurality of continuously arranged semi-reflective and semi-transparent structures on the surface of the reflective wall; The enclosed reflective wall has a light outlet and a light inlet at both ends. The semi-reflective and semi-transparent structure is used to partially reflect the light entering through the light inlet and then emit it through the light outlet, and partially refract it and then emit it through the surface of the semi-reflective and semi-transparent structure.

2. The optical component according to claim 1, characterized in that, The semi-reflective and semi-transparent structure includes a first sawtooth structure and a second sawtooth structure; the two ends of the first sawtooth structure and the second sawtooth structure extend to the light inlet and the light outlet. At least one second sawtooth structure is provided between at least one group of adjacent first sawtooth structures; or at least one first sawtooth structure is provided between at least one group of adjacent second sawtooth structures. The first sawtooth structure is used to reflect part of the light rays completely before they are emitted from the light outlet; the second sawtooth structure is used to refract part of the light rays before they are emitted from the surface of the second sawtooth structure.

3. The optical component according to claim 2, characterized in that, The first sawtooth structure includes a first reflective surface and a second reflective surface, the first reflective surface and the second reflective surface intersect at a first included angle; the first reflective surface and the second reflective surface are total reflective surfaces; The second sawtooth structure includes a third reflective surface and a fourth reflective surface, which intersect at a second included angle; at least one of the third reflective surface and the fourth reflective surface is a transmissive surface.

4. The optical component according to claim 3, characterized in that, The first included angle ranges from 86 to 94 degrees; the second included angle ranges from 1 to 85 degrees or from 95 to 179 degrees.

5. The optical component according to claim 1, characterized in that, The semi-reflective and semi-transparent structure includes a third sawtooth structure; the two ends of the third sawtooth structure extend to the light inlet and the light outlet. The third sawtooth structure includes a fifth reflecting surface and a sixth reflecting surface. The fifth reflecting surface and the sixth reflecting surface intersect at an angle, which is rounded. The fifth reflecting surface and the sixth reflecting surface are total reflection surfaces. The surface corresponding to the rounded corner is a transmission surface.

6. The optical component according to claim 5, characterized in that, The semi-reflective and semi-transparent structure also includes a fourth sawtooth structure, the two ends of which extend to the light inlet and the light outlet. At least one third sawtooth structure is provided between at least one group of adjacent fourth sawtooth structures; or at least one fourth sawtooth structure is provided between at least one group of adjacent third sawtooth structures. The fourth sawtooth structure is used to reflect part of the light rays completely before they are emitted from the light outlet.

7. The optical component according to any one of claims 1-6, characterized in that, The optical component further includes a first light mixing section and a second light mixing section; the first light mixing section is disposed at the light inlet, and the second light mixing section is disposed at the light outlet.

8. The optical component according to claim 7, characterized in that, The second light-mixing part is planar or hemispherical.

9. The optical component according to any one of claims 1-6, characterized in that, The semi-reflective and semi-transparent part is a transparent semi-reflective and semi-transparent part.

10. A lighting device, characterized in that, It includes a light source module and the optical component as described in claim 7; the light source module is disposed on the side of the light inlet away from the first light mixing part, and the light emitted from the light source module can enter the light inlet.

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