Self-cut-off conjugate aspheric optical system
Through the design of the self-cutting conjugated aspherical optical system, the light traverse problem between different luminous areas in automotive lamps is solved, seamless splicing and clear cut-off lines are achieved, and the optical effect and stability of the lamps are improved. It is suitable for automotive exterior ambient lights, charging lights, grille lights and other scenarios.
Patent Information
- Application Number
- CN202421925072.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-09
- Publication Date
- 2025-07-04
- Estimated Expiration
- 2034-08-09
AI Technical Summary
The anti-bounce design effect of existing automotive lamps between different luminous areas is limited, and it is impossible to achieve a clear representation of the upper boundary and cutoff lines of seamless splicing areas, affecting driving safety.
The self-cutting conjugated aspherical optical system is adopted, including a base, an outer lamp shell, a PCB board and a conjugated aspherical imaging coupled lens. The LED light source and the lens area are focused and positioned one by one. The lens area is seamlessly spliced, and the support frame and fastener are firmly installed to achieve clear cut-off and seamless splicing of light.
It realizes the clear presentation of the upper boundaries and cutoff lines of seamless splicing areas with different color patterns, reduces light traverse, improves the directionality and stability of the light beam, and is suitable for a variety of automotive lighting scenarios.
Smart Images
Figure CN223063701U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of optics, and in particular to a self-cutoff conjugate aspherical optical system. Background Art
[0002] Most of the existing automotive headlights use halogen bulbs or xenon lamps as the light-emitting sources, and their disadvantages are high energy consumption, large heat generation, and high material requirements for surrounding parts. With the rapid development of LED light source technology, traditional halogen lamps and xenon lamps on the market will gradually be replaced.
[0003] For automotive lamps, the anti-light-leakage design is an important factor to ensure driving safety and improve the performance of lamps. Anti-light-leakage mainly refers to preventing the light between different functional lamps from interfering with each other and avoiding visual confusion. For example, the light of the brake lamp and the turn signal should not affect each other. The anti-light-leakage design can effectively ensure that the vehicle can clearly and accurately convey the intention and state of the vehicle to other road users under different driving conditions, such as braking and turning, thus improving road safety.
[0004] Most of the existing automotive lamps achieve the purpose of anti-light-leakage by arranging light-shielding brackets between different light-emitting areas. However, this method can only reduce the light-leakage ratio between different light-emitting areas to a certain extent due to the limitation of the installation gap, and this method requires a certain amount of bracket space between different light-emitting areas, and cannot meet the situation of seamless splicing of the light-emitting surface without black-edge dividing lines.
[0005] Therefore, it is urgent to develop a new type of optical system to clearly present the upper boundary and cut-off line of the seamless splicing area of different color patterns. Summary of the Utility Model
[0006] The purpose of the utility model is to provide a self-cutoff conjugate aspherical optical system for clearly presenting the boundary and cut-off line on the seamless splicing area of different color patterns of automotive headlights.
[0007] The purpose of the utility model can be realized by the following technical solutions:
[0008] A self-cutoff conjugate aspherical optical system includes a base and an outer lamp housing. A PCB board and a conjugate aspherical imaging coupling lens are arranged in the cavity formed by the base and the outer lamp housing. Multiple LED light sources including at least two colors are arranged on the PCB board;
[0009] The conjugate aspherical imaging coupling lens includes multiple lens regions, and adjacent lens regions are seamlessly spliced; the LED light sources are in one-to-one focus positioning with the lens regions, and the LED light sources are all located on the principal optical axis of the corresponding lens regions.
[0010] Further, a set of PCB board support frames are provided in the cavity formed by the base and the outer lamp housing, and both ends of the PCB board are respectively installed on the PCB board support frames.
[0011] Further, a set of lens support frames are also provided in the cavity formed by the base and the outer lamp housing, and the top end and the bottom end of the conjugate aspherical imaging coupling lens are respectively connected to the lens support frames.
[0012] Furthermore, the lens support frame is connected to the corresponding PCB board support frame through fasteners and is installed on the base through the fasteners.
[0013] Furthermore, the fasteners are selected from common screws or bolts.
[0014] Further, the number of the lens areas is the same as the number of the LED light sources, and both are not less than 2.
[0015] Further, the aperture diameter of the lens area is 30 - 40 mm.
[0016] Further, the radius of curvature of the lens area is 35 - 42 mm.
[0017] Further, the distance between the LED light source and the coupling surface of the corresponding lens area is 25 - 30 mm.
[0018] Further, the effective divergence angle of the LED light source is 3 - 7°.
[0019] Further, the LED light source includes at least two of a white LED light source, a red LED light source, a blue LED light source, or a yellow LED light source, and can be selected according to actual usage requirements.
[0020] Further, the overall shape of the conjugate aspherical imaging coupling lens includes one of a square, a rectangle, a circle, a star shape, or other irregular shapes, and can be selected according to actual usage requirements.
[0021] Compared with the prior art, the present utility model has the following beneficial effects:
[0022] (1) In the present utility model, the adjacent lens areas of the conjugate aspherical imaging coupling lens are seamlessly spliced, and the LED light source and the lens area are in one-to-one focus positioning, so that the upper boundary and the cut-off line of the seamlessly spliced area of different color patterns are clearly presented, thereby reducing the occurrence of light leakage phenomenon.
[0023] (2) In the present utility model, both the LED light source and the conjugate aspherical imaging coupling lens are stably installed between the base and the outer lamp housing through the support frames, improving the stability of the entire optical system during use.
[0024] (3) The cut-off of the present utility model refers to the clear boundary between bright and dark light. The light emits within the light-emitting surface area and suddenly cuts off in the area where it should not emit light, thus achieving active and automatic prevention of light leakage.
[0025] (4) The conjugate aspherical imaging coupling lens of the present utility model can perform beam shaping on the divergent light of different-color LEDs in different light-emitting regions, change the beam propagation direction, and make the beam spread at a better divergence angle to improve the directivity and quality of the beam.
[0026] (5) The aperture diameter of the conjugate aspherical imaging coupling lens of the present utility model is not limited to the optimal point value of the present invention. It can be adjusted accordingly according to the specific required size of the light-emitting surface. At the same time, the distance and curvature radius between the LED and the lens are adjusted accordingly to achieve full coverage of the energy of the LED within the entire light-emitting surface and optimize the optical effect.
[0027] (6) The shape of the conjugate aspherical imaging coupling lens of the present utility model and the color of the LED light source can both be adjusted according to actual needs, with strong flexibility, and can be applied to scenarios such as automotive exterior ambient lights, charging lights, grille lights, logo lights, etc. Description of the Drawings
[0028] Figure 1 It is a schematic diagram of the overall structure of the self-cutoff conjugate aspherical optical system according to Embodiment 1 of the present utility model.
[0029] Figure 2 It is a schematic diagram of the structure of the conjugate aspherical imaging coupling lens according to Embodiment 2 of the present utility model.
[0030] Figure 3 It is a distribution diagram of the LED light source according to Embodiment 2 of the present utility model.
[0031] Figure 4 It is an optical path diagram according to Embodiment 3 of the present utility model.
[0032] Figure 5 It is a schematic diagram after the blue and white light is lit according to Embodiment 4 of the present utility model.
[0033] Figure 6 It is a schematic diagram of the structure of the conjugate aspherical imaging coupling lens according to Embodiment 5 of the present utility model.
[0034] Explanation of the marks in the figure:
[0035] 1 - Base, 2 - Outer lamp housing, 3 - PCB board, 4 - Conjugate aspherical imaging coupling lens, 41 - Lens area, 5 - LED light source, 6 - PCB board support frame, 7 - Lens support frame, 8 - Fastener. Detailed Embodiment
[0036] The present utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is implemented on the premise of the technical solution of the present utility model, and the detailed implementation manners and specific operation processes are given, but the protection scope of the present utility model is not limited to the following embodiments.
[0037] In the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model; the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance; in addition, unless otherwise clearly specified and defined, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0038] It should be noted that similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.
[0039] Embodiment 1:
[0040] A self-cutoff conjugate aspherical optical system includes a base 1 and an outer lamp housing 2. A PCB board 3 and a conjugate aspherical imaging coupling lens 4 are arranged in the cavity formed by the base 1 and the outer lamp housing 2. Multiple LED light sources 5 including at least two colors are arranged on the PCB board 3.
[0041] The conjugate aspherical imaging coupling lens 4 of this embodiment includes multiple lens regions 41, and the adjacent lens regions 41 are seamlessly spliced; the LED light sources 5 are in one-to-one focus positioning with the lens regions 41, and the LED light sources 5 are all located on the principal optical axes of the corresponding lens regions 41.
[0042] Embodiment 2:
[0043] This embodiment provides a self - cutoff conjugate aspherical optical system, which includes a base 1 and an outer lamp housing 2. Inside the cavity formed by the base 1 and the outer lamp housing 2, there are a PCB board 3 and a conjugate aspherical imaging coupling lens 4. The PCB board 3 is provided with a plurality of LED light sources 5 including at least two colors. The conjugate aspherical imaging coupling lens 4 includes multiple lens regions 41, and the adjacent lens regions 41 are seamlessly spliced; the LED light sources 5 are in one - to - one focus positioning with the lens regions 41, and the LED light sources 5 are all located on the principal optical axes of the corresponding lens regions 41.
[0044] The difference from Embodiment 1 is that, in order to facilitate the installation and fixation of the PCB board 3 and the conjugate aspherical imaging coupling lens 4, a set of PCB board support frames 6 and a set of lens support frames 7 are provided inside the cavity formed by the base 1 and the outer lamp housing 2 in this embodiment. The upper and lower ends of the PCB board 3 are respectively installed on the PCB board support frames 6, and the top and bottom ends of the conjugate aspherical imaging coupling lens 4 are respectively connected to the lens support frames 7. The lens support frames 7 and the corresponding PCB board support frames 6 are connected by fasteners 8 and are installed on the base 1 through the fasteners 8. The fasteners 8 are conventional screws. After installing the PCB board 3 and the conjugate aspherical imaging coupling lens 4, the outer lamp housing 2 is welded and sealed with the base 1.
[0045] The PCB board 3 in this embodiment plays a role in supporting and fixing the LED light sources 5 and other electronic components soldered on its surface. The conductive tracks on the PCB board connect each electronic component including the LED light sources 5 to achieve efficient and stable transmission of electronic signals (all are conventional circuit connections, not shown in the figure).
[0046] Embodiment 3:
[0047] This embodiment provides a self - cutoff conjugate aspherical optical system, which includes a base 1 and an outer lamp housing 2. Inside the cavity formed by the base 1 and the outer lamp housing 2, there are a PCB board 3 and a conjugate aspherical imaging coupling lens 4. The PCB board 3 is provided with a plurality of LED light sources 5 including at least two colors.
[0048] The conjugate aspherical imaging coupling lens 4 includes multiple lens regions 41, and the adjacent lens regions 41 are seamlessly spliced. The conjugate aspherical imaging coupling lens 4 in this embodiment is square as a whole and has four small square lens regions 41. The LED light sources 5 are in one - to - one focus positioning with the lens regions 41, and the LED light sources 5 are all located on the principal optical axes of the corresponding lens regions 41. The LED light sources 5 are distributed at intervals on the PCB board 3 and correspond to each lens region 41 one by one.
[0049] In this embodiment, the aperture diameter of the lens area 41 is 35 mm, and the radius of curvature of the lens area 41 is 38 mm. The distance between the LED light source 5 and the coupling surface corresponding to the lens area 41 is 27.5 mm. The aperture diameter is not limited to the preferred value of the present invention and can be adjusted accordingly according to the specific required size of the light-emitting surface. At the same time, the distance between the LED and the lens and the radius of curvature are adjusted accordingly to achieve full coverage of the energy of the LED within the entire light-emitting surface, so as to optimize the optical effect.
[0050] The optical path diagram of this embodiment is as Figure 4 shown. The LED light source 5 is an approximate point light source, and its effective divergence angle is 3-7°. By performing beam shaping on the divergent light of different color LEDs in different light-emitting regions and changing the beam propagation direction, the beam can be diffused at a divergence angle of about 5°, which can effectively improve the directivity and quality of the beam.
[0051] Embodiment 4:
[0052] This embodiment provides a self-cutoff conjugate aspherical optical system, which includes a base 1 and an outer lamp housing 2. A PCB board 3 and a conjugate aspherical imaging coupling lens 4 are arranged in the cavity formed by the base 1 and the outer lamp housing 2. A plurality of LED light sources 5 including at least two colors are arranged on the PCB board 3. The conjugate aspherical imaging coupling lens 4 includes multiple lens areas 41, and the adjacent lens areas 41 are seamlessly spliced; the LED light sources 5 are in one-to-one focus alignment with the lens areas 41, and the LED light sources 5 are all located on the main optical axis of the corresponding lens areas 41.
[0053] Among them, the LED light sources 5 include at least two of a white LED light source, a red LED light source, a blue LED light source or a yellow LED light source, and can be selected according to actual usage requirements. Taking white light and blue light as examples, the schematic diagrams of finally lighting three color blocks or four color blocks are as Figure 5 shown. It can be seen that the upper boundary and the cut-off line of the seamless splicing area of different color patterns are clearly presented. The light emits within the light-emitting surface area and suddenly cuts off in the area where it should not emit light, without the phenomenon of light leakage, realizing active and automatic anti-light-leakage.
[0054] Embodiment 5:
[0055] This embodiment provides a self-cutoff conjugate aspherical optical system, which includes a base 1 and an outer lamp housing 2. A PCB board 3 and a conjugate aspherical imaging coupling lens 4 are arranged in the cavity formed by the base 1 and the outer lamp housing 2. A plurality of LED light sources 5 including at least two colors are arranged on the PCB board 3. The conjugate aspherical imaging coupling lens 4 includes multiple lens areas 41, and the adjacent lens areas 41 are seamlessly spliced; the LED light sources 5 are in one-to-one focus alignment with the lens areas 41, and the LED light sources 5 are all located on the main optical axis of the corresponding lens areas 41.
[0056] The overall shape of the conjugate aspherical imaging coupling lens in this embodiment includes one of a square, a rectangle, a circle, a star shape, or other irregular shapes, which can be selected according to actual usage requirements. Figure 6 A conjugate aspherical imaging coupling lens with an overall circular shape is shown, where each lens region 41 corresponds to a sector.
[0057] The above description of the embodiments is for the convenience of those of ordinary skill in the art to understand and use the utility model. It is obvious that those skilled in the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative labor. Therefore, the present utility model is not limited to the above embodiments, and the improvements and modifications made by those skilled in the art without departing from the scope of the present utility model according to the disclosure of the present utility model should be within the protection scope of the present utility model.
Claims
1. A self-cutoff conjugate aspherical optical system, comprising a base (1) and an outer lamp housing (2), characterized in that, A PCB board (3) and a conjugate aspherical imaging coupling lens (4) are arranged in the cavity formed by the base (1) and the outer lamp housing (2), and a plurality of LED light sources (5) including at least two colors are arranged on the PCB board (3); The conjugate aspherical imaging coupling lens (4) includes a plurality of lens regions (41), and adjacent lens regions (41) are seamlessly spliced; the LED light sources (5) are in one-to-one focus positioning with the lens regions (41), and the LED light sources (5) are all located on the principal optical axes of the corresponding lens regions (41).
2. The self-cutoff conjugate aspherical optical system according to claim 1, wherein A group of PCB board support frames (6) are arranged in the cavity formed by the base (1) and the outer lamp housing (2), and two ends of the PCB board (3) are respectively mounted on the PCB board support frames (6).
3. The aspherical optical system with self-cutoff conjugation according to claim 2, wherein A group of lens support frames (7) are also arranged in the cavity formed by the base (1) and the outer lamp housing (2), and the top end and the bottom end of the conjugate aspherical imaging coupling lens (4) are respectively connected with the lens support frames (7).
4. The self-cutoff conjugate aspherical optical system according to claim 3, wherein, The lens support frame (7) is connected with the corresponding PCB board support frame (6) through a fastener (8) and is mounted on the base (1) through the fastener (8).
5. The self-cutoff conjugate aspherical optical system according to claim 1, characterized in that The number of the lens regions (41) is the same as the number of the LED light sources (5), and both are not less than 2.
6. The self-cutoff conjugate aspherical optical system according to claim 1, characterized in that The aperture diameter of the lens region (41) is 30-40 mm.
7. An autocutoff conjugate aspherical optical system according to claim 1, characterized in that, The radius of curvature of the lens region (41) is 35-42 mm.
8. The self-cutoff conjugate aspherical optical system according to claim 1, characterized in that, The distance between the LED light source (5) and the coupling surface of the corresponding lens region (41) is 25-30 mm.
9. The self - cutoff conjugate aspherical optical system according to claim 1, wherein The effective divergence angle of the LED light source (5) is 3-7°.
10. The self-cutoff conjugate aspherical optical system according to claim 1, characterized in that The LED light source (5) includes at least two of a white LED light source, a red LED light source, a blue LED light source or a yellow LED light source.