Stepless thick-wall optical structure of automobile signal lamp
By using a stepless pattern design and adjusting the Conic parameters, the problem of bright spots caused by light leakage in thick-walled optical systems was solved, achieving uniform light distribution and aesthetic effects while meeting regulatory requirements.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHIYAN DONGFENG SANLI VEHICLE LIGHTS CO LTD
- Filing Date
- 2025-06-10
- Publication Date
- 2026-05-15
AI Technical Summary
The stepped patterns in existing thick-walled optical systems cause light leakage, resulting in bright spots and uneven light output, which affects aesthetics and optical performance.
It adopts a stepless pattern design, combined with multiple arc protrusions and Conic parameter adjustment, and achieves uniform light distribution through the design of reflective and light-emitting surfaces. It uses LED light source and thick-walled light guide for secondary optical modulation.
The light distribution was optimized, bright spots were eliminated, and the visual effect was improved, meeting regulatory requirements while enhancing the aesthetics and uniformity of the optical system.
Smart Images
Figure CN224245990U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of vehicle lighting technology, and in particular to a stepless thick-walled optical structure for automotive signal lights. Background Technology
[0002] With the continuous development of automotive lighting technology and aesthetic design, automotive styling is undergoing repeated transformations. As a crucial expression of automotive aesthetics, headlight appearance has become a competitive factor for consumers when making purchasing decisions. Simultaneously, the booming automotive market has provided consumers with more choices; automotive lighting is no longer merely a means of illumination to meet regulatory requirements, but rather an interactive window to satisfy consumer aesthetics. However, while styling evolves, the uniformity of headlight illumination remains a key factor in matching the design and enhancing its aesthetic appeal, placing higher demands on the optical design of headlights.
[0003] For thick-walled optical systems, due to their optical characteristics and the limitations imposed by their shape, the patterns on the thick walls must have steps. These steps are necessary to calibrate the light to HV to meet regulatory requirements. However, the need for steps in the thick-walled patterns not only results in an unsightly appearance but also causes light leakage at the steps when the light source is turned on, forming bright spots and uneven light output, which requires optimization. Utility Model Content
[0004] To address the aforementioned problems, this invention proposes a stepless thick-walled optical structure for automotive signal lights, thereby overcoming the shortcomings of existing designs.
[0005] To achieve the purpose of this utility model, the present utility model is implemented through the following technical solution: a stepless thick-walled optical structure for automotive signal lights, comprising:
[0006] A side-projection thick wall is provided with an incident surface A at the top of the side-projection thick wall, and a condenser for calibrating the light is provided on the incident surface A;
[0007] The reflective surface is set on one side of the thick wall of the side projection and forms an angle C with the incident surface A. The reflective surface is placed below the concentrator to change the incident angle of the light.
[0008] The light-emitting surface A is located on the side of the side projection thick wall away from the reflecting surface, and the light-emitting surface A is located in front of the reflecting surface;
[0009] The stepless pattern is laid on the light-emitting surface A and the reflective surface to adjust the light-emitting direction of the light-emitting surface A and to converge the light towards the center.
[0010] A further improvement is that the stepless pattern includes multiple arc protrusions, and each arc protrusion array is arranged on the light-emitting surface A. The boundaries of the arc protrusions form a starting angle line and an ending angle line. The starting angle line forms an angle A with the normal of the light-emitting surface A, and the ending angle line forms an angle B with the normal of the light-emitting surface A.
[0011] Where -90°≤angle A≤90°, -90°≤angle B≤90°.
[0012] A further improvement is that an LED light source is provided on one side of the concentrator, and the degree of light dispersion of the arc protrusion can be adjusted by changing the Conic parameter of the LED light source. The Conic parameter has three adjustment modes.
[0013] Adjustment method 1: Set the Conic parameter to C1, where 0 < C1 < 0.5;
[0014] Adjustment method 2: Set the Conic parameter to C2, 0.5 < C2 < 1;
[0015] Adjustment method 3: Set the Conic parameter to C3, C3 = 0.5.
[0016] A further improvement is that the included angle C is 45°.
[0017] A further improvement is that the concentrator includes a light cup and a cone, with the light cup fixedly mounted on the incident surface A and the cone fixedly mounted at the center of the light cup.
[0018] A further improvement is that the bottom and top of the side-projection thick wall are provided with a lower decorative frame A and an upper decorative frame A for fixing the side-projection thick wall.
[0019] Further improvements include: a thick-walled light guide, which is placed in front of the thick wall of the side projection, with an incident surface B on the side of the thick-walled light guide facing the light-emitting surface A, and a light-emitting surface B on the side of the thick-walled light guide away from the light-emitting surface A.
[0020] A further improvement is that both the incident surface B and the light-emitting surface B are provided with stepless patterns.
[0021] A further improvement is that the arc-shaped protrusion is presented as one of four types of patterns: a quadrilateral pattern, a hexagonal pattern, or a city wall brick pattern.
[0022] A further improvement is that the side-projection thick wall is one of the following: a side-projection single-crank thick wall, a side-projection double-crank thick wall, or a side-projection multi-crank thick wall.
[0023] Compared with the prior art, the beneficial effects of this utility model are:
[0024] After the light is collimated upon entering the condenser, the propagation path of the light is adjusted from the Z direction to the X direction by the reflective surface. Then, the light passes through the stepless pattern, and the light is dimmed under the action of the stepless pattern, which directs the light to the center. This not only meets the regulations but also effectively optimizes the light distribution on the light-emitting surface, solves the problem of bright spots on the outer side caused by the steps, and improves the visual effect of the thick wall. Attached Figure Description
[0025] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0026] Figure 1 This is a structural diagram of the side-projection thick-walled structure in this utility model.
[0027] Figure 2 This is a structural diagram of the light cup in this utility model.
[0028] Figure 3 This is a structural diagram of the non-stepped pattern in this utility model.
[0029] Figure 4 This is a structural diagram of the arc-shaped protrusion in this utility model.
[0030] Figure 5 This is a structural diagram of the LED light source in this utility model.
[0031] Figure 6 This is a structural diagram of the combination of a side-projection single thick-walled optical guide and a thick-walled optical guide in this utility model.
[0032] Figure 7 This is a structural diagram of the side-projection double-claw thick-walled structure of this utility model.
[0033] Figure 8 This is a structural diagram of the combination of a side-projection double-crank thick-walled optical guide and a thick-walled optical waveguide in this utility model.
[0034] Among them: 1. Side-projection thick wall; 11. Incident surface A; 12. Reflecting surface; 13. Light-emitting surface A; 131. Normal; 14. Lower decorative frame A; 15. Upper decorative frame A;
[0035] 2. No stepped pattern; 21. Rounded raised surface; 211. Starting angle line; 212. Ending angle line;
[0036] 3. Condenser; 31. Optical cup; 32. Cone;
[0037] 4. LED light source;
[0038] 5. Thick-walled light guide; 51. Incident surface B; 52. Light-emitting surface B; 53. Lower decorative frame B; 54. Upper decorative frame B. Detailed Implementation
[0039] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0040] according to Figure 1 , 2 As shown in figures 3, 4, 5, 6, 7, and 8, this embodiment proposes a stepless thick-walled optical structure for automotive signal lights, comprising:
[0041] A side-projection thick wall 1 is provided with an incident surface A11 at the top of the side-projection thick wall 1, and a condenser 3 for calibrating the light is provided on the incident surface A11.
[0042] The reflective surface 12 is set on one side of the side projection thick wall 1 and forms an angle C with the incident surface A11. The reflective surface 12 is placed below the concentrator 3 to change the incident angle of the light.
[0043] The light-emitting surface A13 is located on the side of the side projection thick wall 1 away from the reflecting surface 12, and the light-emitting surface A13 is located in front of the reflecting surface 12;
[0044] The stepless pattern 2 is laid on the light-emitting surface A13 and the reflective surface 12 to adjust the light-emitting direction of the light-emitting surface A13 and to converge the light towards the center.
[0045] After the light is collimated by the concentrator 3, the propagation path of the light is adjusted from the Z direction to the X direction by the reflector 12. Then the light passes through the stepless pattern 2, and the light is dimmed under the action of the stepless pattern 2, which turns the light to the center. While meeting the regulations, it effectively optimizes the light distribution of the light-emitting surface, solves the problem of bright spots on the outside caused by the steps, and improves the visual effect of the thick wall 1.
[0046] It should be noted that the stepless pattern 2 on the reflective surface 12 in this scheme is applicable to both concave and convex structures.
[0047] It is worth explaining in detail that the stepless pattern 2 includes multiple arc protrusions 21, and each arc protrusion 21 is arranged in an array on the light-emitting surface A13. The boundaries of the arc protrusions 21 form a starting angle line 211 and an ending angle line 212. The starting angle line 211 forms an angle A with the normal line 131 of the light-emitting surface A13, and the ending angle line 212 forms an angle B with the normal line 131 of the light-emitting surface A13.
[0048] Where -90°≤angle A≤90°, -90°≤angle B≤90°.
[0049] Among them, the included angle A refers to the angle between the starting angle line 211 and the normal line 131 of the light-emitting surface A13. Changing the included angle A can change the orientation of one of the boundaries of the arc protrusion 21; the included angle B refers to the angle between the ending angle line 212 and the normal line 131 of the light-emitting surface A13. Changing the included angle B can change the orientation of the other boundary of the arc protrusion 21, thereby achieving the purpose of polishing.
[0050] For instructions on how to adjust the light, please refer to the following:
[0051] An LED light source 4 is provided on one side of the concentrator 3. The degree of light dispersion of the arc protrusion 21 can be adjusted by changing the Conic parameter of the LED light source 4. The Conic parameter has three adjustment modes.
[0052] Adjustment Method 1: Set the Conic parameter to C1, where 0 < C1 < 0.5; C1 is the elliptical mode, which possesses the characteristic that "light originating from the first focus must pass through the second focus." Patterns in this mode can distribute energy more evenly.
[0053] Adjustment Method 2: Set the Conic parameter to C2, where 0.5 < C2 < 1; C2 is the hyperbolic mode, possessing the characteristic that "light reflected from the first focal point has its backward extension passing through the second focal point." This mode offers high pattern energy utilization and is more regulatory compliant.
[0054] Adjustment Method 3: Set the Conic parameter to C3, C3 = 0.5; C3 is the parabolic mode, which has the characteristic that "light emitted from the focal point is reflected and parallel to the axis." The pattern in this mode can take into account both of the above characteristics.
[0055] The Conic curve used in this scheme controls the light emission direction of the side-projected thick wall 1 without steps, through the starting angle line 211 and ending angle line 212 of the arc protrusion 21 boundary, thus directing the light towards the center. The Conic curve parameters correspond to three modes: hyperbola, ellipse, and parabola. Compared with the traditional circular adjustment curve, it has a stronger ability to control energy distribution and a higher ability to optimize uniformity. By adjusting the Conic curve parameters in this non-circular adjustment method, the pattern dispersion is controlled, making the energy distribution more reasonable and achieving a uniform distribution of light with an upper viewing angle of 0°-20° and an inner and outer viewing angle of -60°-60°.
[0056] The included angle C is 45°.
[0057] The concentrator 3 includes a light cup 31 and a cone 32. The light cup 31 is fixedly mounted on the incident surface A11, and the cone 32 is fixedly mounted at the center of the light cup 31. The light cup 31 and the cone 32 are integrally formed with the side projection thick wall 1. After the diverging light emitted by the LED light source 4 enters the light cup 31, the inner wall of the light cup 31 constrains the direction of the light through total internal reflection or specular reflection, reduces lateral scattering, and initially collimates the light, causing the light to propagate along the axis of the cone 32. When the light enters the cone 32 from the light cup 31, the curvature of the cone surface causes the light to refract. The light located at the bottom of the light cup 31 has a larger incident angle and is deflected towards the axis of the light cup 31 after refraction. The light near the top of the cone has a smaller incident angle and a smaller deflection angle, eventually causing the diverging light to gradually converge towards the top of the cone.
[0058] It is worth explaining in detail that the bottom and top of the side-projection thick wall 1 are provided with a lower decorative frame A14 and an upper decorative frame A15 for fixing the side-projection thick wall 1, and the side-projection thick wall 1 is fixed to the external frame by the lower decorative frame A14 and the upper decorative frame A15.
[0059] In a preferred embodiment, the optical structure further includes a thick-walled light guide 5, which is positioned in front of the side-projection thick wall 1. The side of the thick-walled light guide 5 facing the light-emitting surface A13 has an incident surface B51, and the side of the thick-walled light guide 5 away from the light-emitting surface A13 has an exit surface B52. The thick-walled light guide 5 added in front of the side-projection thick wall 1 can perform secondary optical modulation on the light scattered by the first layer, correcting uneven light distribution, making the overall light pattern smoother, softening boundaries, reducing sharp transitions at light edges, and reducing eye fatigue.
[0060] It is worth explaining in detail that the thick-walled light guide 5 has a lower decorative frame B53 and an upper decorative frame B54 at the bottom and top for fixing the thick-walled light guide 5. The thick-walled light guide 5 is fixed to the external frame through the lower decorative frame B53 and the upper decorative frame B54.
[0061] In addition to the stepless pattern 2 on the light-emitting surface A13, the incident surface B51 and the light-emitting surface B52 are also provided with stepless patterns 2.
[0062] In the preferred embodiment, the side-projection thick wall 1 is one of the following: side-projection single thick wall, side-projection single-curve thick wall, side-projection double-curve thick wall, and side-projection multi-curve thick wall.
[0063] The side-projection thick-walled component 1 can be used alone or in conjunction with other thick-walled components. Its style can be adjusted according to actual needs to form different combinations, for example:
[0064] Side-projection single thick-walled (with) Figure 1 ), side-projection single thick-walled + thick-walled / internal (with) Figure 6 Side-projection single / double / multiple-claw thick-walled, side-projection single / double / multiple-claw thick-walled + thick-walled (attached) Figure 7 , 8Please refer to the attached diagram for the styles of side-projection single-crank thick-wall and side-projection double-crank thick-wall. Side-projection multi-crank thick-wall is an incremental increase based on the side-projection double-crank thick-wall, which will not be explained in detail here.
[0065] In a preferred embodiment, the arc-shaped protrusion 21 is presented as one of a quadrilateral pattern, a hexagonal pattern, or a city wall brick pattern. Other patterns may be used besides those exemplified above, and will not be elaborated upon here. The entire optical structure is made of PC / PMMA material, and the color scheme can be adjusted as needed without limitation.
[0066] How this application works:
[0067] By using the starting angle line 211 and ending angle line 212 of the boundary of the arc protrusion 21, the light emission direction of the side-projected thick wall 1 is controlled without steps, directing the light towards the center. The Conic curve parameters correspond to three modes: hyperbola, ellipse, and parabola.
[0068] Set the Conic parameter to C1 (0 < C1 < 0.5, elliptic mode) to utilize the elliptic optical properties to make the energy distribution more uniform.
[0069] Set the Conic parameter to C2 (0.5 < C2 < 1, hyperbolic mode) to improve energy efficiency and comply with regulations by utilizing hyperbolic optical properties;
[0070] Set the Conic parameter to C3 (C3 = 0.5, parabolic mode) to balance uniformity and energy efficiency.
[0071] By adjusting the Conic curve parameters using a non-circular adjustment method, the pattern can be dispersed, achieving a uniform distribution of light from multiple perspectives.
[0072] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.
[0073] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.
Claims
1. A stepless thick-walled optical structure for automotive signal lights, characterized in that, include: A side-projection thick wall (1) is provided with an incident surface A (11) at the top of the side-projection thick wall (1), and a condenser (3) for calibrating the light is provided on the incident surface A (11); A reflective surface (12) is disposed on one side of the side projection thick wall (1) and forms an angle C with the incident surface A (11). The reflective surface (12) is placed below the concentrator (3) to change the incident angle of light. The light-emitting surface A (13) is disposed on the side of the side projection thick wall (1) away from the reflective surface (12), and the light-emitting surface A (13) is located in front of the reflective surface (12); The stepless pattern (2) is laid on the light-emitting surface A (13) and the reflective surface (12) to adjust the light-emitting direction and converge the light towards the center.
2. The stepless thick-walled optical structure for automotive signal lights according to claim 1, characterized in that: The stepless pattern (2) includes multiple arc protrusions (21), and each of the arc protrusions (21) is arranged in an array on the light-emitting surface A (13). The boundaries of the arc protrusions (21) form a starting angle line (211) and a ending angle line (212). The starting angle line (211) forms an angle A with the normal (131) of the light-emitting surface A (13), and the ending angle line (212) forms an angle B with the normal (131) of the light-emitting surface A (13). Where -90°≤angle A≤90°, -90°≤angle B≤90°.
3. The stepless thick-walled optical structure for automotive signal lights according to claim 2, characterized in that: The condenser (3) is provided with an LED light source (4) on one side. The light dispersion degree of the arc protrusion (21) can be adjusted by changing the Conic parameter of the LED light source (4). The Conic parameter has three adjustment modes. Adjustment method 1: Set the Conic parameter to C1, where 0 < C1 < 0.5; Adjustment method 2: Set the Conic parameter to C2, where 0.5 < C2 < 1; Adjustment method 3: Set the Conic parameter to C3, C3=0.
5.
4. The stepless thick-walled optical structure for automotive signal lights according to claim 2, characterized in that: The included angle C is 45°.
5. The stepless thick-walled optical structure for automotive signal lights according to claim 4, characterized in that: The concentrator (3) includes a light cup (31) and a cone (32). The light cup (31) is fixedly disposed on the incident surface A (11), and the cone (32) is fixedly disposed at the center of the light cup (31).
6. The stepless thick-walled optical structure for automotive signal lights according to claim 1, characterized in that: The side-projection thick wall (1) is provided with a lower decorative frame A (14) and an upper decorative frame A (15) for fixing the side-projection thick wall (1) at the bottom and top.
7. The stepless thick-walled optical structure for automotive signal lights according to claim 1, characterized in that: It also includes a thick-walled light guide (5), which is placed in front of the side projection thick wall (1). The thick-walled light guide (5) has an incident surface B (51) on the side facing the light-emitting surface A (13), and a light-emitting surface B (52) on the side away from the light-emitting surface A (13).
8. The stepless thick-walled optical structure for automotive signal lights according to claim 7, characterized in that: Both the incident surface B (51) and the light-emitting surface B (52) are provided with stepless patterns (2).
9. The stepless thick-walled optical structure for automotive signal lights according to claim 2, characterized in that: The arc protrusion (21) is presented as one of the following: a quadrilateral pattern, a hexagonal pattern, or a city wall brick pattern.
10. A stepless thick-walled optical structure for an automotive signal light according to any one of claims 1-9, characterized in that: The side-projection thick wall (1) is one of the following: side-projection single-crank thick wall, side-projection double-crank thick wall, and side-projection multi-crank thick wall.