Lens, illumination module and vehicle lamp
By setting blocking protrusions on the upper side of the lens body, stray light problems under the tilt design of the headlight lens are solved, and high-quality formation of light is achieved.
Patent Information
- Application Number
- CN202422307281.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-20
- Publication Date
- 2025-08-05
- Estimated Expiration
- 2034-09-20
AI Technical Summary
Existing headlight lenses are prone to stray light under tilted design, affecting the formation quality of the light.
A blocking projection is provided on the upper side of the lens body to reflect or absorb light to prevent it from exiting along the light propagation path.
While meeting the layout space and light output angle of the headlight module, it effectively avoids the generation of stray light and ensures the formation quality of the light.
Smart Images
Figure CN223191466U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to lighting equipment, in particular to a lens, a lighting module and a vehicle lamp. Background Art
[0002] With the rapid development of the automobile industry, people are paying more and more attention to the reliability of automobile components while paying attention to the economy and efficiency of automobiles. As components with lighting and signal indication functions, headlights are also receiving attention.
[0003] In order to reduce wind resistance, existing headlights generally have external accessories close to the outside of the car body with a large inclination angle. Specifically, the headlight lens is often designed to be inclined according to styling requirements. At the same time, with the continuous application of narrow and long headlight modules, the inclination angle has greatly limited the layout space and light output angle of the headlight module, and caused some light to be unable to enter the headlight lens when emitted, forming stray light. Utility Model Content
[0004] The technical problem to be solved by the utility model is to provide a lens, a lighting module and a vehicle lamp, which can effectively avoid the generation of stray light when the lens is tilted.
[0005] In order to solve the above technical problems, the first aspect of the present invention provides a lighting module, in which a light propagation path is formed, including a light source and primary optical elements and lenses arranged in sequence along the light propagation path, the lens including a lens body, the lens body including a lens light-emitting surface located at the front end and a lens light-incident surface located at the rear end, and a shielding protrusion is provided on the upper side surface of the lens body to prevent the light transmitted to the top of the lens body through the primary optical element from being emitted along the light propagation path.
[0006] In some specific embodiments, the shielding protrusion is provided with a shielding reflective surface for reflecting the light transmitted through the primary optical element to the upper part of the lens body so that the light does not exit along the light propagation path.
[0007] In some specific embodiments, the shielding protrusion is a transparent member, and a front end surface or a rear end surface of the shielding protrusion is provided with a reflective coating to form the shielding reflective surface; or,
[0008] The front end surface of the shielding protrusion is a total reflection surface to form the shielding reflection surface.
[0009] In some specific embodiments, the shielding protrusion is a dark-colored piece so as to absorb light transmitted through the primary optical element to the upper portion of the lens body.
[0010] In some specific embodiments, the shielding protrusion and the lens body are an integrally formed part.
[0011] In some specific embodiments, the light incident surface of the lens is a convex surface formed by sweeping a contour line of a convex curve along a sweep line, the sweep line is a straight line or a curve, and the extension direction of the sweep line is horizontal or vertical.
[0012] In some specific embodiments, the convex surface includes a plurality of sub-convex surfaces arranged in parallel, and the first pattern is provided at the connection between adjacent sub-convex surfaces.
[0013] In some specific embodiments, the extension direction of the sweep line is vertical, the upper edge of the convex surface extends upward to form the blocking protrusion, the blocking protrusion includes a plurality of sub-blocking protrusions arranged in parallel, the primary optical element includes a reflector arranged corresponding to the light incident surface of the lens, the reflector includes a plurality of sub-reflectors arranged in parallel, and the sub-reflectors, the sub-convex surface and the sub-blocking protrusions are arranged in a one-to-one correspondence.
[0014] In some specific embodiments, at least one of the upper side surface and the lower side surface of the lens body is provided with a second pattern.
[0015] In some specific embodiments, a third pattern is provided on the entire light-emitting surface or a portion of the light-emitting surface of the lens.
[0016] A second aspect of the present invention provides a lens, which is the lens in the above-mentioned lighting module.
[0017] A third aspect of the present invention provides a vehicle lamp, comprising the above-mentioned lighting module or the above-mentioned lens.
[0018] Through the above solution, the beneficial effects of the utility model are as follows:
[0019] The utility model provides a shielding protrusion on the upper side of the lens body, so that the light transmitted to the upper part of the lens body through the primary optical element is not emitted along the light propagation path. Therefore, when the lens is tilted at a large angle, while meeting the layout space and light output angle of the headlight module, the generation of stray light can be avoided, thereby ensuring the forming quality of the light shape.
[0020] Other features and advantages of the present invention will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] 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:
[0022] Figure 1This is one of the structural schematic diagrams of a specific embodiment of the lighting module of the present utility model;
[0023] Figure 2 This is a front view of a specific embodiment of the lighting module of the present invention;
[0024] Figure 3 This is the second structural diagram of a specific embodiment of the lighting module of the present invention;
[0025] Figure 4 This is an exploded view of a specific embodiment of the lighting module of the present invention;
[0026] Figure 5 This is a schematic diagram of the structure of a specific embodiment of the lens of the utility model Figure 1 ;
[0027] Figure 6 This is a schematic diagram of the structure of a specific embodiment of the lens of the utility model Figure 2 ;
[0028] Figure 7 This is a schematic diagram of the structure of a specific embodiment of the lens of the utility model Figure 3 ;
[0029] Figure 8 It is a light path diagram of a specific implementation method in which the shielding reflective surface is a reflective coating.
[0030] Description of Reference Numerals
[0031] 1: Light source; 2: Primary optical element; 201: Sub-reflector; 202: Cut-off line structure; 3: Lens; 301: Lens body; 301-1: Lens light-emitting surface; 301-2: Lens light-incident surface; 302: Shielding protrusion; 302-1: Shielding reflection surface; 303: First pattern; 304: Second pattern; 305: Third pattern; 4: Circuit board; 5: Heat sink; 6: Partition. DETAILED DESCRIPTION
[0032] 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.
[0033] 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.
[0034] In the present invention, some directional words such as "front", "rear", "up", "down", "left", and "right" are used in the following description to clearly illustrate the technical solution of the present invention. Based on the lens body 301, "front" refers to the direction indicated by the light emitting direction of the lens body 301, "rear" refers to the direction opposite to "front", "left" refers to the left side along the light emitting direction of the lens body 301, and "right" refers to the right side along the light emitting direction of the lens body 301, that is, the same as the left and right sides of the vehicle when it is driving normally. "Up" refers to the upper side along the light emitting direction of the lens body 301, and "down" refers to the lower side along the light emitting direction of the lens body 301. The terms 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. They do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the present invention.
[0035] The utility model provides a lighting module, see Figure 1-8 As a specific embodiment of the lighting module of the present invention, a light propagation path is formed in the lighting module, including a light source 1 and a primary optical element 2 and a lens 3 arranged in sequence along the light propagation path. The lens 3 includes a lens body 301, and the lens body 301 includes a lens light-emitting surface 301-1 located at the front end and a lens light-incident surface 301-2 located at the rear end. A shielding protrusion 302 is provided on the upper side of the lens body 301 to prevent the light transmitted to the top of the lens body 301 through the primary optical element 2 from being emitted along the light propagation path.
[0036] See also Figure 2When the lighting module of the present invention adopts an inclined shape for lens 3 in order to reduce wind resistance, the lighting module of the present invention does not have an inclined angle or the inclined angle is not large. Therefore, when the light emitted by the light source 1 is collimated by the primary optical element 2 and directed toward the lens 3, some of the collimated light may be emitted from the upper front light propagation path of the lens 3. Since this part of the light is not transmitted through the lens 3, it is formed as stray light, affecting the quality of the light shape. To this end, the lighting module of the present invention is provided with a shielding protrusion 302 on the upper side of the lens body 301, so that the light that is collimated by the primary optical element 2 and transmitted to the upper part of the lens body 301 is not emitted along the light propagation path, that is, it cannot be emitted from the front end of the lens 3. This avoids the generation of stray light while meeting the layout space and light output angle of the vehicle light module, thereby ensuring the quality of the light shape. It should be noted that the tilted shape of the lens 3 is to meet the design requirement of reducing wind resistance, which is only a specific application of the lighting module of the present invention and does not limit the protection scope of the lighting module of the present invention.
[0037] It should be noted that the lighting module of the present invention also includes a circuit board 4 and a heat sink 5. The light source 1 is arranged on the circuit board 4, and the circuit board 4 is installed on the heat sink 5. The primary optical element 2 is arranged corresponding to the light source 1. The light emitted by the light source 1 is transmitted to the lens 3 through the primary optical element 2, and forms a light shape after being emitted through the lens 3.
[0038] As a first specific embodiment of the shielding protrusion 302, the shielding protrusion 302 is provided with a shielding reflective surface 302-1 for reflecting the light transmitted through the primary optical element 2 to the top of the lens body 301, so that the light does not emit along the light propagation path. The light reflected by the shielding reflective surface 302-1 can be emitted upward, downward or backward, as long as it is not emitted along the light emission direction of the light propagation path.
[0039] Furthermore, the shielding protrusion 302 is a transparent member, and a reflective coating is provided on the front end surface or the rear end surface of the shielding protrusion 302 to form a shielding reflective surface 302-1, for example, see Figure 8, the light above the lens body 301 is emitted from the rear end face of the shielding protrusion 302 to the shielding reflecting surface 302-1 on the shielding protrusion 302, and after reflection, it is emitted downward to the lower side of the lens body 301, avoiding the generation of stray light; or, the shielding protrusion 302 is a transparent part, and the light above the lens body 301 first enters the shielding protrusion 302 from the rear end face of the shielding protrusion 302, and is emitted to the front end face of the shielding protrusion 302. When the light is emitted from the interface of the light-dense medium (that is, the refractive index of light in this medium is large) to the light-sparse medium (that is, the refractive index of light in this medium is small), by reasonably setting the incident angle, the front end face of the shielding protrusion 302 is made into a total reflection surface to form the shielding reflecting surface 302-1, and after being totally reflected by the shielding reflecting surface 302-1, it is emitted downward to the lower side of the lens body 301, avoiding the generation of stray light.
[0040] In another specific embodiment of the shielding protrusion 302, the shielding protrusion 302 is a dark-colored member to absorb light transmitted through the primary optical element 2 to the upper portion of the lens body 301, thereby preventing the light from being emitted along the light-exiting direction of the light propagation path and generating stray light. The dark-colored member is preferably black to improve its light absorption rate.
[0041] In some specific embodiments, the shielding protrusion 302 and the lens body 301 are integrally formed. In particular, when the shielding protrusion 302 is a dark-colored piece, the shielding protrusion 302 and the lens body 301 are made of the same material and are formed by two-color injection molding.
[0042] In some embodiments, see Figure 6 The lens light-entry surface 301-2 is a convex surface formed by sweeping the contour of a convex curve along a sweep line. The sweep line can be a straight line or a curve, and the sweep line extends in a horizontal or vertical direction. When the sweep line extends in a horizontal direction (left-right direction), it can collimate and converge light incident from the lens light-entry surface 301-2 in the vertical direction. When the sweep line extends in a vertical direction (up-down direction), it can collimate and converge light incident from the lens light-entry surface 301-2 in the left-right direction.
[0043] In some embodiments, such as Figure 1 、 Figure 3 and Figure 4As shown, the primary optical element 2 includes a reflector arranged corresponding to the lens light incident surface 301-2, and the reflector includes a plurality of sub-reflectors 201 arranged in parallel. A partition 6 can be set between adjacent sub-reflectors 201 for separation. The partition 6 can be formed integrally on the heat sink 5 or the primary optical element 2 and close to the lens light incident surface 301-2 to prevent light from crossing. The convex surface includes a plurality of sub-convex surfaces arranged in parallel, and the number of sub-convex surfaces is arranged in a one-to-one correspondence with the number and position of the sub-reflectors 201, so that after the light is reflected by each sub-reflector 201, it can be collimated and converged by its corresponding sub-reflector 201. Compared with a single convex surface, the arrangement of multiple sub-convex surfaces can improve the effect of light collimation and convergence, and further improve the quality of light shape formation. Further, see Figure 6 A first pattern 303 is provided at the connection between adjacent sub-convex surfaces, so that the stray light generated by the light reaching the connection between each adjacent sub-convex surface can be eliminated through the first pattern 303.
[0044] It should be noted that, in order to ensure that the shielding protrusion 302 eliminates or reduces the stray light above the lens body 301, the shielding protrusion 302 is preferably provided on the upper side of the lens body 301 at the rear end, so as to be close to the primary optical element 2. Furthermore, when the convex curved surface includes a plurality of sub-convex curved surfaces arranged in parallel, and the extension direction of the sweep line is vertical, the upper edge of the convex curved surface is extended upward to form the shielding protrusion 302. The shielding protrusion 302 includes a plurality of sub-shielding protrusions arranged in parallel. The primary optical element 2 includes a reflector arranged corresponding to the lens light incident surface 301-2. The reflector includes a plurality of sub-reflectors 201 arranged in parallel. The number and position of the sub-reflectors 201, the sub-convex curved surfaces, and the sub-shielding protrusions are arranged in a one-to-one correspondence. The provision of the sub-shielding protrusions can further enhance the effect of eliminating or reducing the stray light reflected from each sub-reflector 201 to the upper side of the lens body 301.
[0045] In some embodiments, see Figure 6 At least one of the upper side and the lower side of the lens body 301 is provided with a second pattern 304 to further eliminate or weaken the stray light emitted from the upper and lower side surfaces.
[0046] It should be noted that the lighting module of the present invention can be a low beam module or a high beam module, and the first pattern 303 and the second pattern 304 are applicable to both the low beam module and the high beam module. Furthermore, the present invention also provides a third pattern 305 on the light-emitting surface 301-1 of the lens; when the third pattern 305 is applicable to the high beam module, see Figure 6 and Figure 7, a third pattern 305 can be provided on the entire light-emitting surface of the lens light-emitting surface 301-1, thereby achieving the effect of uniform light; when the third pattern 305 is suitable for the low-beam module, a third pattern 305 (not shown in the figure) can be provided on a part of the light-emitting surface of the lens light-emitting surface 301-1. The third pattern 305 is located in the lower area of the lens light-emitting surface 301-1, thereby adjusting the gradient of the low-beam cutoff line, making the low-beam cutoff line not too sharp and more natural when connecting with the high-beam light shape, wherein, see Figure 3 When the primary optical element 2 is a reflector, a cutoff line structure 202 may be provided at the root of the reflector to form a bright and dark cutoff line of the low beam light shape.
[0047] It should also be noted that there is no limitation on the specific patterns of the first pattern 303 , the second pattern 304 and the third pattern 305 . For example, stripe patterns, diamond patterns, etc. may be used.
[0048] The second aspect of the present invention provides a lens, which is the lens 3 in the lighting module provided by the first aspect of the present invention. As a preferred embodiment of the lens of the present invention, see Figure 5-Figure 8 The lens 3 includes a lens body 301, which includes a lens light-emitting surface 301-1 at the front end and a lens light-entering surface 301-2 at the rear end. A shielding protrusion 302 is provided on the upper side surface of the lens body 301, and the front end surface or the rear end surface of the shielding protrusion 302 is provided with a reflective coating to form a shielding reflective surface 302-1; alternatively, the front end surface of the shielding protrusion 302 is a total reflection surface; or alternatively, the shielding protrusion 302 is a dark-colored part. When the lens 3 is used in a headlight module, even if an inclined shape is adopted to meet the demand of reducing wind resistance, which causes part of the light collimated by the primary optical element 2 to be emitted from the upper front light propagation path of the lens 3, the lens of the utility model can also change the original transmission direction of the light through the shielding protrusion 302, or absorb the light through the shielding protrusion 302, thereby preventing the light from being emitted from the front end of the lens 3 along the light transmission path, so as to avoid the generation of stray light while meeting the layout space and light output angle of the headlight module, thereby ensuring the forming quality of the light shape.
[0049] The third aspect of the present invention is a vehicle lamp, comprising the lighting module provided by the first aspect of the present invention or the lens provided by the second aspect. Therefore, it has all the beneficial effects thereof and will not be described in detail here.
[0050] 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.
[0051] 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.
[0052] 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. A lighting module having a light propagation path formed therein, characterized in that: The invention comprises a light source (1) and a primary optical element (2) and a lens (3) arranged in sequence along the light propagation path, wherein the lens (3) comprises a lens body (301), the lens body (301) comprises a lens light exit surface (301-1) located at the front end and a lens light entrance surface (301-2) located at the rear end, and a shielding protrusion (302) is provided on the upper side surface of the lens body (301) so that light transmitted to the upper part of the lens body (301) through the primary optical element (2) does not exit along the light propagation path.
2. The lighting module according to claim 1, characterized in that: The shielding protrusion (302) is provided with a shielding reflection surface (302-1) for reflecting light transmitted through the primary optical element (2) to the top of the lens body (301), so that the light does not exit along the light propagation path.
3. The lighting module according to claim 2, characterized in that: The shielding protrusion (302) is a transparent member, and a front end surface or a rear end surface of the shielding protrusion (302) is provided with a reflective coating to form the shielding reflective surface (302-1); or, The front end surface of the shielding protrusion (302) is a total reflection surface to form the shielding reflection surface (302-1).
4. The lighting module according to claim 1, wherein: The shielding protrusion (302) is a dark-colored piece so as to be able to absorb light transmitted through the primary optical element (2) to the upper portion of the lens body (301).
5. The lighting module according to any one of claims 1 to 4, characterized in that: The shielding protrusion (302) and the lens body (301) are integrally formed.
6. The lighting module according to any one of claims 1 to 4, characterized in that: The light incident surface (301-2) of the lens is a convex surface formed by sweeping the contour line of a convex curve along a sweep line. The sweep line is a straight line or a curve, and the extension direction of the sweep line is horizontal or vertical.
7. The lighting module according to claim 6, characterized in that: The convex curved surface comprises a plurality of sub-convex curved surfaces arranged in parallel, and the connection between adjacent sub-convex curved surfaces is provided with a first pattern (303).
8. The lighting module according to claim 7, characterized in that: The sweep line extends in a vertical direction, the upper edge of the convex surface extends upward to form the shielding protrusion (302), the shielding protrusion (302) includes a plurality of sub-shielding protrusions arranged in parallel, the primary optical element (2) includes a reflector arranged corresponding to the lens incident surface (301-2), the reflector includes a plurality of sub-reflectors (201) arranged in parallel, and the sub-reflectors (201), the sub-convex surface and the sub-shielding protrusions are arranged in a one-to-one correspondence.
9. The lighting module according to any one of claims 1 to 4, characterized in that: At least one of the upper side surface and the lower side surface of the lens body (301) is provided with a second pattern (304).
10. The lighting module according to any one of claims 1 to 4, characterized in that: A third pattern (305) is provided on the entire light-emitting surface or a portion of the light-emitting surface of the lens light-emitting surface (301-1).
11. A lens, characterized in that: The lens is the lens (3) in the lighting module according to any one of claims 1 to 10.
12. A vehicle lamp, characterized in that: The invention comprises the lighting module according to any one of claims 1 to 10 or the lens according to claim 11.