Optical element, optical system and vehicle lamp

Abstract

The utility model relates to an optical component, and provides an optical element, which comprises an optical surface, the optical surface comprises at least two groups of optical units (1), each optical unit (1) comprises a reflecting surface (11) and a refracting surface (12), and light rays of the optical units (1) are sequentially reflected by the reflecting surfaces (11) and refracted by the refracting surfaces (12) and then are emitted; wherein the reflection angles of the reflection surfaces (11) of all the groups of optical units (1) are different, and / or the refraction angles of the refraction surfaces (12) of all the groups of optical units are different, so that the light diffusion angle intervals of all the groups of optical units (1) are different, low-cost pixel pattern display is achieved, and the overall optical efficiency is not affected. The utility model further provides an optical system and a vehicle lamp.

Description

Technical Field

[0001] The utility model relates to optical components, in particular to an optical element, an optical system and a vehicle lamp. Background Art

[0002] In many fields, various lighting or signaling devices are known for providing light for lighting or signaling. For example, headlights are used in motor vehicles to provide lighting or signaling functions to ensure safe driving or to provide decorative functions.

[0003] Clean lines and large, uniformly illuminated light patterns have been popular for many years, but this aesthetic has gradually become fatigued. As user needs continue to evolve, personalized pixel patterns are increasingly being used in headlights. Existing technologies primarily implement personalized pixel patterns in two ways: The first involves blocking light, for example, using a decorative ring to partially block light, or laser engraving a patterned area. However, this method results in energy loss, impacting overall optical efficiency. The second method involves combining a light source and a lens to create a pixel pattern. However, this method requires a light source for each pixel, resulting in a large number of light sources and high costs.

[0004] Therefore, it is necessary to design a new type of optical element to overcome or alleviate the above technical problems. Utility Model Content

[0005] The technical problem to be solved by the present invention is to provide an optical element, an optical system and a vehicle lamp, which can display pixel patterns at a low cost without affecting the overall optical efficiency.

[0006] In order to solve the above technical problems, the first aspect of the present invention provides an optical element, comprising an optical surface, wherein the optical surface comprises at least two groups of optical units, wherein the optical units comprise a reflective surface and a refractive surface, and light from the optical units is sequentially reflected by the reflective surface and refracted by the refractive surface before being emitted;

[0007] The reflection angles of the reflection surfaces of the optical units of each group are different, and / or the refraction angles of the refraction surfaces of the optical units of each group are different, so that the light diffusion angle ranges of the optical units of each group are different.

[0008] In some specific embodiments, the light diffusion angle range of one group of optical units in each group of optical units is at least partially located outside the light diffusion angle range of the other groups of optical units.

[0009] In some specific embodiments, the reflection angles of the reflective surfaces of different groups of optical units are the same, and the refractive angles of the refractive surfaces are different;

[0010] Alternatively, the reflection angles of the reflective surfaces of different groups of optical units are different, and the refractive angles of the refractive surfaces are the same;

[0011] Alternatively, the reflection angles of the reflection surfaces of different groups of optical units are different, and the refraction angles of the refraction surfaces are different.

[0012] In some specific embodiments, the reflective surface includes one or more sub-reflective surfaces, and the reflection angles of the multiple sub-reflective surfaces are the same or approximately the same;

[0013] The refractive surface includes one or more sub-refractive surfaces, and the refractive angles of the multiple sub-refractive surfaces are the same or approximately the same.

[0014] In some specific embodiments, the reflective surface is a flat surface or a curved surface.

[0015] In some specific embodiments, the optical element is a light guide, and the light emitting surface of the light guide is the optical surface.

[0016] In some specific embodiments, the optical unit further includes a side connecting surface and a bottom light incident surface, the reflective surface and the refractive surface are connected to the bottom light incident surface via the side connecting surface, and the side connecting surface is parallel or approximately parallel to the optical axis of the light guide.

[0017] In some specific embodiments, the angle between the reflective surface and the optical axis of the light guide is greater than or equal to 30° and less than or equal to 50°.

[0018] A second aspect of the present invention provides an optical system comprising the above-mentioned optical element.

[0019] A third aspect of the present invention provides a vehicle lamp provided with the above-mentioned optical system.

[0020] Through the above solution, the beneficial effects of the utility model are as follows:

[0021] Through the above technical solution, the utility model arranges different groups of optical units on the optical surface, and the optical units include a reflective surface and a refractive surface. The light of the optical unit is reflected by the reflective surface and refracted by the refractive surface in turn and then emitted. The reflection angles of the reflective surfaces of different groups of optical units are different, and / or the refractive angles of the refractive surfaces of different groups of optical units are different, so that the light diffusion angle ranges of different groups of optical units are different, and then the optical units of each group are combined to form different patterns at different observation angles. The above structure is simple, does not require additional light sources, does not block part of the light, effectively avoids energy loss, and ensures overall optical efficiency.

[0022] Other features and advantages of the present invention will be described in detail in the subsequent detailed description of the embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention but do not constitute a limitation of the present invention. In the accompanying drawings:

[0024] Figure 1 This is a structural schematic diagram of a specific embodiment of the optical element of the utility model;

[0025] Figure 2 yes Figure 1 A schematic diagram of the structure at center A;

[0026] Figure 3 yes Figure 2 A magnified schematic diagram of the structure at point B in the middle;

[0027] Figure 4 yes Figure 3 Schematic diagram of the cross section at CC;

[0028] Figure 5 yes Figure 4 Schematic diagram of the optical path;

[0029] Figure 6 yes Figure 1 A top view of part of the structure at D in the middle;

[0030] Figure 7 Schematic diagram of the first setting form of the light diffusion angle range of the two sets of optical units;

[0031] Figure 8 1 is a schematic diagram of a second setting form of the light diffusion angle range of the two sets of optical units;

[0032] Figure 9 is a schematic diagram of a first arrangement form of reflective surfaces and refractive surfaces of different groups of optical units;

[0033] Figure 10 is a schematic diagram of a second arrangement of reflective surfaces and refractive surfaces of different groups of optical units;

[0034] Figure 11 is a schematic diagram of a third arrangement of reflective surfaces and refractive surfaces of different groups of optical units;

[0035] Figure 12 is a schematic structural diagram of a first specific embodiment of the optical unit 1;

[0036] Figure 13 Schematic diagram of a lighting pattern formed by a first light diffusion angle interval of a first group of optical units in a specific embodiment of the present invention;

[0037] Figure 14Schematic diagram of a lighting pattern formed by a second light diffusion angle interval of a second optical unit in a specific embodiment of the present invention;

[0038] Figure 15 Schematic diagram of a lighting pattern formed by the overlapping area between the first light diffusion angle interval of the first optical unit and the second light diffusion angle interval of the second optical unit in a specific embodiment of the present invention;

[0039] Figure 16 is a structural diagram of a second specific embodiment of the optical unit 1;

[0040] Figure 17 This is a front view of a specific embodiment of the present invention in which the light guide is a thick-walled lens;

[0041] Figure 18 This is a left side view of a specific embodiment of the present invention in which the light guide is a thick-walled lens;

[0042] Figure 19 This is a top view of a specific embodiment of the present invention in which the light guide is a thick-walled lens;

[0043] Figure 20 It is a structural schematic diagram of a specific embodiment of the present invention in which the light guide member is a thin-walled lens.

[0044] Description of Reference Numerals

[0045] Tag Name

[0046] 1. Optical unit; 11. Reflective surface; 12. Refractive surface; 13. Side connecting surface; 14. Bottom light incident surface; 2. Light guide. DETAILED DESCRIPTION

[0047] The specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and the protection scope of the present invention is not limited to the specific embodiments described below.

[0048] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "formed," "provided with," "set," "connected," etc. should be understood in a broad sense. For example, the connection may be a direct connection or an indirect connection through an intermediate medium; it may be a fixed connection, a detachable connection, or an integral connection; it may be a direct connection or an indirect connection through an intermediate connector; it may be internal communication between two elements or an interaction relationship between two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] In the present invention, unless otherwise specified, the directions or positional relationships indicated by the directional words "up", "down", "left", "right", "counterclockwise", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only used to facilitate the description of the present invention and simplify the description, rather than to indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, it cannot be understood as a limitation on the present invention; the directional terms of the present invention should be understood in conjunction with the actual installation status.

[0050] like Figures 1 to 15 An embodiment of the utility model provides an optical element, including an optical surface, which includes at least two groups of optical units 1. The optical unit 1 includes a reflective surface 11 and a refractive surface 12. Light entering the optical unit 1 is reflected by the reflective surface 11 and refracted by the refractive surface 12 in sequence before being emitted. The reflective surface 11 of each group of optical units 1 has a different reflection angle, and / or the refractive surface 12 of each group of optical units has a different refractive angle, so that the light diffusion angle range of each group of optical units 1 is different.

[0051] Through the above basic scheme, the present invention can set the arrangement of the optical units 1 according to the required personalized pixel pattern. The light entering the optical unit 1 can be reflected and refracted to form diffused light. The light projected by different optical units 1 is combined to form the required projection pattern. Moreover, since the reflection angle and / or refraction angle of different groups of optical units 1 are different, the light diffusion angle ranges of different groups of optical units 1 are different. Therefore, different groups of optical units 1 can be combined to form different projection patterns at different observation angles. When the human eye observes the optical element at different angles, different lighting effects can be seen, meeting the needs of personalized pixel patterns. In addition, see Figure 1 and Figure 6 , Figure 6 for Figure 1 Looking down at the optical unit 1 at point D, different groups of optical units 1 display different patterns at different viewing angles. Furthermore, the present invention simply arranges different groups of optical units on the optical surface, eliminating the need for additional light sources, resulting in a simple structure and low cost. Furthermore, the present invention utilizes reflection and refraction to achieve personalized patterns without blocking light, effectively avoiding energy loss and ensuring overall optical efficiency.

[0052] It should be noted that the light of the optical unit 1 is emitted from the refractive surface 12, that is, the refractive surface 12 is the light-emitting surface of the optical unit 1. Therefore, the refractive surfaces 12 of some optical units 1 in each group of optical units 1 can be set on the same base surface, that is, it can be understood that the refractive surfaces of some optical units 1 are coplanar to form a complete optical imaging surface. The above-mentioned base surface is a concept of a virtual surface, and the base surface can be a plane or a curved surface. For example, when the optical element of the present invention is a light guide 2, see Figure 1 , the base surface is a curved surface.

[0053] In some specific embodiments, the light diffusion angle interval of one group of optical units 1 is at least partially located outside the light diffusion angle interval of the other groups of optical units 1, so that different groups of optical units 1 are combined to form different lighting patterns at different observation angles. Specifically, there are two configurations of the light diffusion angle intervals of different groups of optical units. The first configuration is: Figure 7 For example, the first diffusion angle of the first optical unit is 0° to 45°, and the second diffusion angle of the second optical unit is -45° to -15°. There is no overlapping range between the first diffusion angle range and the second diffusion angle range. Therefore, when the human eye is in the first diffusion angle range, it can only receive the light emitted by the first optical unit and cannot receive the light emitted by the second optical unit. Therefore, the optical imaging surface area corresponding to the second optical unit has no lighting effect, so it can be observed as follows. Figure 13 When the human eye is in the second diffusion angle range, it can only receive the light emitted by the second optical unit, and cannot receive the light emitted by the first optical unit. Therefore, the optical imaging surface area corresponding to the first optical unit has no lighting effect, and it can be observed as follows: Figure 14 The second setting is: Figure 8 For example, the first diffusion angle of the first optical unit is 0° to 45°, and the second diffusion angle of the second optical unit is -25° to -5°. There is an overlapping range between the first diffusion angle range and the second diffusion angle range. When the human eye is in the area within the first diffusion angle range that does not overlap with the second diffusion angle range, it can only receive the outgoing light of the first optical unit and cannot receive the outgoing light of the second optical unit. Therefore, the optical imaging surface area corresponding to the second optical unit has no lighting effect, so it can be observed as follows. Figure 13 When the human eye is in the area where the first diffusion angle interval overlaps within the second diffusion angle interval, it can only receive the light emitted by the second optical unit and cannot receive the light emitted by the first optical unit. Therefore, the optical imaging surface area corresponding to the first optical unit has no lighting effect, and it can be observed as follows: Figure 14As shown in the pattern, when the human eye is in the overlapping area of the first diffusion angle range and the second diffusion angle range, light enters the human eye from both the first optical unit and the second optical unit, and the illuminated pattern can be observed. However, due to different observation angles, the corresponding display areas of the two will have a distinction between light and dark, so that the following can be observed: Figure 15 The pattern shown.

[0054] Specifically, the diffusion angle of the optical unit 1 is determined by the reflection angle of the reflective surface and the refraction angle of the refractive surface. There are three configurations in which the light diffusion angle ranges of each group of optical units 1 are different. The first configuration is that the reflection angles of the reflective surfaces 11 of different groups of optical units 1 are the same, and the refraction angles of the refractive surfaces 12 are different. Figure 9 For example, the first reflective surface 11a of the first optical unit and the second reflective surface 11b of the second optical unit have the same reflection angle, and the first refractive surface 12a of the first optical unit and the second refractive surface 12b of the second optical unit have different refractive angles, thereby forming emergent light with different angles; the second setting form: the reflective angles of the reflective surfaces 11 of different optical units 1 are different, and the refractive angles of the refractive surfaces 12 are the same, so that Figure 10 For example, the first reflective surface 11a of the first optical unit and the second reflective surface 11b of the second optical unit have different reflection angles, and the first refractive surface 12a of the first optical unit and the second refractive surface 12b of the second optical unit have the same refractive angle, thereby forming emergent light with different angles; a third setting form: the reflective surface 11 of different optical units 1 has different reflection angles, and the refractive surface 12 has different refractive angles, so that Figure 11 For example, the first reflective surface 11a of the first optical unit and the second reflective surface 11b of the second optical unit have different reflection angles, and the first refractive surface 12a of the first optical unit and the second refractive surface 12b of the second optical unit have different refractive angles, thereby forming outgoing light rays at different angles. It should be noted that the above-mentioned refractive angles and reflection angles can be adjusted by adjusting the angle between the refractive surface 12 and the optical axis and the angle between the reflective surface 11 and the optical axis, for example, see Figure 1-5 Taking the optical element as the light guide 2 as an example, the angles between the first reflective surface 11a and the second reflective surface 11b and the optical axis X can be made different, and / or the angles between the first refractive surface 12a and the second refractive surface 12b and the optical axis X can be made different, so that the first group of optical units and the second group of optical units have different diffusion angle ranges.

[0055] It should be noted that the optical unit 1 forms light propagation through the reflective surface 11 and the refractive surface 12. For a specific embodiment, see Figure 1-6The optical element of the present invention is a light guide 2, the light exit surface of which is an optical surface. At least two groups of optical units 1 are disposed on the light exit surface of the light guide 2. The optical units 1 include a reflective surface 11 and a refractive surface 12. Light entering the optical units 1 is sequentially reflected by the reflective surface 11 and refracted by the refractive surface 12 before exiting. The reflective surfaces 11 of each group of optical units 1 have different reflection angles, and / or the refractive surfaces 12 of each group of optical units have different refractive angles, so that the light diffusion angle ranges of each group of optical units 1 are different. The refractive surfaces 12 of each group of optical units 1 together constitute the entire optical imaging surface of the light guide 2. Different lighting patterns can be seen on the light exit surface of the light guide 2 at different observation angles.

[0056] Specifically, the optical unit 1 and the light guide 2 are integrally formed, which is convenient for manufacturing and assembly. In addition to the reflective surface 11 and the refractive surface 12, the optical unit 1 also includes a side connecting surface 13 and a bottom light incident surface 14. The reflective surface 11 and the refractive surface 12 are connected to the bottom light incident surface 14 through the side connecting surface 13 to form a cubic unit; for example, see Figure 12 , the optical unit 1 is a triangular prism, the reflective surface 11 and the refractive surface 12 are connected to the bottom light incident surface 14 through the side connecting surfaces 13 on the upper and lower sides; or, see Figure 16 , the optical unit 1 is a tetrahedron, and the reflective surface 11 and the refractive surface 12 are connected to the bottom light incident surface 14 through a side connecting surface 13. It should be noted that there is no limit to the number of side connecting surfaces 13 included in an optical unit 1. They are only used to connect the reflective surface 11 and the refractive surface 12 to the bottom light incident surface 14, and can be freely designed according to the shape requirements of the light-emitting surface of the light guide 2. However, the side connecting surface 13 should be parallel or approximately parallel to the optical axis of the light guide 2, so that the light of the light guide 2 will not be directly emitted toward the side connecting surface 13, and the display quality of the formed lighting pattern will not be affected. In addition, in the case where the optical unit 1 and the light guide 2 are an integrally formed part, the above-mentioned bottom light incident surface 14 is connected to the light-emitting surface of the light guide 2, and thus cannot be distinguished, then the bottom light incident surface 14 can be regarded as a virtual light incident surface.

[0057] In some specific embodiments, the edge of the reflective surface 11 can be a straight line, that is, the reflective surface 11 is a plane. To obtain a light pattern with more uniform brightness, the edge of the reflective surface 11 can also be an arc, that is, the reflective surface 11 is a curved surface, so as to diffuse the light. The greater the curvature of the curved surface (the larger the arc), the greater the degree of light diffusion. Therefore, the curvature (radian) can be designed according to actual design requirements so that the reflective surface 11 can simultaneously take into account the requirements of changing the transmission path of light and diffusion. Among them, the reflecting surface 11 is a total reflection surface to prevent light from being directly emitted from the reflecting surface 11 to the outside, affecting the display quality of the lit pattern. There are two specific implementation methods for it as a total reflection surface. The first specific implementation method is: a reflective coating is coated on the reflecting surface 11 to form a total reflection surface; the second specific implementation method is: when light enters a medium with a higher refractive index from a medium with a lower refractive index, if the incident angle is greater than a certain critical angle (the light is far away from the normal), the refracted light will disappear, and all the incident light will be reflected without entering the medium with a low refractive index. To this end, the inclination angle of the reflecting surface 11 relative to the optical axis X can be reasonably set so that the reflecting surface 11 forms a total internal reflection surface.

[0058] In some specific embodiments, the angle between the reflective surface 11 and the optical axis X of the light guide 2 is greater than or equal to 30° and less than or equal to 50°, so as to better reflect the light toward the refractive surface 12 and achieve different light diffusion angle ranges for different groups of optical units 1.

[0059] In some specific embodiments, the reflective surface 11 includes one or more sub-reflective surfaces. Specifically, when the reflective surface 11 includes one sub-reflective surface, the reflective surface 11 is a complete plane or curved surface; when the reflective surface includes multiple sub-reflective surfaces, the reflective surface 11 is a spliced surface formed by splicing multiple sub-reflective surfaces to better connect with surrounding surfaces and meet the shape requirements of the light output surface of the light guide 2. The reflection angles of the multiple sub-reflective surfaces are the same or approximately the same, that is, there is an inclination between adjacent sub-reflective surfaces, but the inclination angle is small. The multiple sub-reflective surfaces can be approximately regarded as a complete and continuous surface, so that the light output angle of the optical unit 1 remains within the corresponding light diffusion angle range.

[0060] In some specific embodiments, the refractive surface 12 includes one or more sub-refractive surfaces, and the refractive angles of the multiple sub-refractive surfaces are the same or approximately the same. Specifically, when the refractive surface 12 includes one sub-refractive surface, the refractive surface 12 is a complete plane or curved surface; and when the refractive surface includes multiple sub-refractive surfaces, the refractive surface 12 is a spliced surface formed by splicing multiple sub-refractive surfaces, so as to form a better connection with the surrounding surfaces and meet the shape requirements of the light-emitting surface of the light guide 2. The refractive angles of the multiple sub-refractive surfaces are the same or approximately the same, that is, there is an inclination between adjacent sub-refractive surfaces, but the inclination angle is small, and the multiple sub-refractive surfaces can be approximately regarded as a complete and continuous surface, so that the light emission angle of the optical unit 1 is still within its corresponding light diffusion angle range.

[0061] In some embodiments, see Figure 17-Figure 19 , the light guide 2 can be a thick-walled lens to improve the overall brightness of the light pattern; or, see Figure 20 , the light guide 2 can also be a thin-walled lens.

[0062] See also Figures 1-6 , a preferred embodiment of the present invention provides an optical element, which is a light guide 2, and at least two groups of optical units 1 are arranged on the light output surface of the light guide 2, the two groups of optical units 1 are respectively a first group of optical units and a second group of optical units, wherein the optical unit 1 includes a reflective surface 11 and a refractive surface 12, and the light in the light guide 2 is reflected by the reflective surface 11 and then refracted by the refractive surface 12 and then emitted, the first reflective surface 11a of the first group of optical units and the second reflective surface 11b of the second group of optical units have different reflection angles, and / or the first refractive surface 12a of the second group of optical units and the second refractive surface 12b of the second group of optical units have different refractive angles, so that the first light diffusion angle range of the first group of optical units and the second light diffusion angle range of the second group of optical units are different, so that the lit images on the optical imaging surface of the light guide 2 seen by the human eye in the first light diffusion angle range and the second light diffusion angle range are different, meeting the needs of personalized pixel patterns. In addition, since the optical element of the present invention has a simple structure, there is no need to add additional light sources to the pixels, thereby effectively controlling production costs; and there is no shielding of light, which effectively avoids energy loss and ensures overall optical efficiency.

[0063] The second aspect of the present invention provides an optical system, comprising a light source and the above-mentioned optical element, wherein the light source and the optical surface of the optical element are arranged correspondingly, and the optical surface is configured to enable the light emitted by the light source to be emitted from different directions and form corresponding light patterns.

[0064] A third aspect of the present invention is a vehicle lamp provided with the above-mentioned optical system, which has all the beneficial effects thereof and will not be described in detail here.

[0065] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the scope of protection of the present invention.

[0066] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, the present invention will not further describe various possible combinations.

[0067] In addition, the various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. An optical element, characterized in that: The optical surface comprises at least two groups of optical units (1), the optical units (1) comprise a reflective surface (11) and a refractive surface (12), and light from the optical unit (1) is sequentially reflected by the reflective surface (11) and refracted by the refractive surface (12) before being emitted; The reflection angles of the reflection surfaces (11) of each group of optical units (1) are different, and / or the refraction angles of the refraction surfaces (12) of each group of optical units are different, so that the light diffusion angle ranges of each group of optical units (1) are different.

2. The optical element according to claim 1, wherein The light diffusion angle interval of one group of optical units (1) in each group of optical units (1) is at least partially located outside the light diffusion angle interval of the other groups of optical units (1).

3. The optical element according to claim 1, wherein The reflection angles of the reflection surfaces (11) of different groups of optical units (1) are the same, and the refraction angles of the refraction surfaces (12) are different; Alternatively, the reflection angles of the reflection surfaces (11) of different groups of optical units (1) are different, and the refraction angles of the refraction surfaces (12) are the same; Alternatively, the reflection angles of the reflection surfaces (11) of different groups of optical units (1) are different, and the refraction angles of the refraction surfaces (12) are different.

4. The optical element according to claim 1, wherein The reflecting surface (11) includes one or more sub-reflecting surfaces, and the reflection angles of the multiple sub-reflecting surfaces are the same or approximately the same; The refractive surface (12) comprises one or more sub-refractive surfaces, and the refractive angles of the plurality of sub-refractive surfaces are the same or approximately the same.

5. The optical element according to claim 1, wherein The reflecting surface (11) is a flat surface or a curved surface.

6. The optical element according to any one of claims 1 to 5, characterized in that The optical element is a light guide (2), and the light-emitting surface of the light guide (2) is the optical surface.

7. The optical element according to claim 6, wherein The optical unit (1) further comprises a side connecting surface (13) and a bottom light incident surface (14); the reflective surface (11) and the refractive surface (12) are connected to the bottom light incident surface (14) via the side connecting surface (13); and the side connecting surface (13) is parallel or approximately parallel to the optical axis of the light guide (2).

8. The optical element according to claim 6, wherein The angle between the reflecting surface (11) and the optical axis of the light guide (2) is greater than or equal to 30° and less than or equal to 50°.

9. An optical system, characterized in that The optical element comprises the optical element according to any one of claims 1 to 8.

10. A vehicle lamp, characterized in that: The optical system according to claim 9 is provided.

Images