Modularized optical assembly and module optical system thereof
Through the modular optical components with a total reflection modular design, the existing automotive headlight system is not compact and the installation positioning accuracy is solved, the system is compact and styling flexibility is achieved, and production costs and process difficulty is reduced.
Patent Information
- Application Number
- CN202421661047.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-15
- Publication Date
- 2025-04-25
- Estimated Expiration
- 2034-07-15
AI Technical Summary
In the existing automotive headlight optical systems, the reflective system structure leads to the system being not compact, the installation and positioning accuracy is high, and the production cost and cycle are relatively high, making it difficult to meet the needs of compactness and innovative shapes.
Modular optical components with a fully reflective modular design include transparent material front and rear light channels, total reflection step surfaces and Fresnel condensers. Through total reflection and Fresnel effects, the beam collimation and illumination light formation are achieved, reducing the aluminum plating process and system space occupation.
It realizes that the system space structure is more compact, reduces production costs and process tooling difficulty, improves the flexibility of the design of the headlights, and reduces the installation and positioning requirements.
Smart Images
Figure CN222798733U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of automobile lamps, and in particular to a modular optical component and a module optical system thereof. Background Art
[0002] At present, the optical system of automobile headlights usually uses a reflective system structure, and the reflective headlight optical system is mostly implemented in the form of a reflective bowl. Since the reflective bowl structure requires a larger system structure space, the structure is not compact enough, and the installation and positioning accuracy requirements are high, in addition, the surface of the reflective bowl needs to be aluminum-plated, which increases the production cost and the production cycle. The current development of the headlight system increasingly requires the compact modularization of the internal structure of the system, which is more conducive to the innovative design of the headlight shape. Therefore, a modular optical component and its module optical system are designed. The full-reflection modular design can achieve a more compact system space structure, and the cost can be reduced without aluminum plating process. The system installation and positioning requirements are lower than those of the reflective bowl system, which reduces the difficulty of process tooling. Utility Model Content
[0003] The purpose of the utility model is to solve the deficiencies of the prior art and provide a modular optical component and a module optical system. The full-reflection modular design can realize a more compact system spatial structure, improve the flexibility of the headlight design, reduce costs without aluminum plating process, and the system installation and positioning requirements are lower than those of the reflective bowl system, which reduces the difficulty of process tooling and can effectively solve the problems existing in the prior art.
[0004] The utility model is realized through the following technical solutions:
[0005] A modular optical component is made of a transparent material, comprising a front and rear light channel, a light emitting surface is provided at the front end of the front and rear light channel, a total reflection step surface is provided at the rear end of the front and rear light channel, a Fresnel condenser is provided at the top end of the front and rear light channel, and the orthographic projection of the Fresnel condenser is located within the total reflection step surface area, the Fresnel condenser is used to collect and collimate the light beam, the total reflection step surface is used to totally reflect the light beam collected and collimated by the Fresnel condenser, the light emitting surface is used to emit the light beam totally reflected by the total reflection step surface to obtain an illumination light pattern, and the illumination light pattern is used to provide an auxiliary low beam function, a corner light function, or a front fog light function.
[0006] Furthermore, according to the modular optical component of the utility model, the total reflection step surface is composed of a plurality of continuous step surfaces, and the step surface is inclined at an angle, and the inclination angle of the step surface is set according to the required rotation angle of the light emitting surface relative to the LED light source to achieve total reflection of the light beam provided by the LED light source, and two adjacent step surfaces are connected by a horizontally arranged connecting surface.
[0007] Furthermore, according to the modular optical component of the utility model, the light emitting surface is turned 90 degrees relative to the light beam of the LED light source, and the step surface is inclined at 45 degrees.
[0008] Furthermore, according to the modular optical component of the present invention, the transverse length of the connecting surface can be adjusted according to the size of the longitudinal aperture of the light emitting surface.
[0009] Further, according to the modular optical component of the utility model, the light-emitting surface is a free-form surface, and the free-form surface is divided by nine points according to the corresponding functional light distribution requirements, and the surface types at other positions are generated by smooth connection. The nine points are the first point, the second point, the third point, the fourth point, the fifth point, the sixth point, the seventh point, the eighth point and the ninth point, and each point defines the light beam divergence angle, so as to obtain the corresponding functional lighting light type.
[0010] Further, according to the modular optical component of the utility model, the first point is used to provide a light beam with a horizontal divergence angle of -30 degrees and a vertical divergence angle of -1 degree; the second point is used to provide a light beam with a horizontal divergence angle of 0 degrees and a vertical divergence angle of -1 degree; the third point is used to provide a light beam with a horizontal divergence angle of 30 degrees and a vertical divergence angle of -1 degree; the fourth point is used to provide a light beam with a horizontal divergence angle of -30 degrees and a vertical divergence angle of -1 degree; the fifth point is used to provide a light beam with a horizontal divergence angle of 0 degrees and a vertical divergence angle of -2 degrees; the sixth point is used to provide a light beam with a horizontal divergence angle of 30 degrees and a vertical divergence angle of -1 degree; the seventh point is used to provide a light beam with a horizontal divergence angle of -30 degrees and a vertical divergence angle of -1 degree; the eighth point is used to provide a light beam with a horizontal divergence angle of 0 degrees and a vertical divergence angle of -2 degrees; the ninth point is used to provide a light beam with a horizontal divergence angle of 30 degrees and a vertical divergence angle of -1 degree.
[0011] A modular optical system comprises an LED light source and the modular optical component described above, wherein the LED light source is located above the modular optical component, and a longitudinal spacing of 3-5 mm is provided between the LED light source and a Fresnel condenser.
[0012] Furthermore, according to the module optical system of the utility model, the lateral distance deviation range between the center of the LED light source and the center of the Fresnel condenser is ±0.3 mm.
[0013] The utility model has a simple structure and adopts a full-reflection modular design to achieve a more compact system space structure, improve the flexibility of the headlight design, reduce costs without aluminum plating process, and have lower system installation and positioning requirements than the reflective bowl system, reducing the difficulty of process tooling. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1It is a structural schematic diagram of the utility model.
[0015] Figure 2 It is a schematic diagram of the transverse cross-sectional structure of the utility model.
[0016] Figure 3 yes Figure 2 Schematic diagram of the structure of the dotted box part.
[0017] Figure 4 It is a structural schematic diagram of the modular optical component in the utility model.
[0018] Figure 5 It is a structural schematic diagram of the light-emitting surface in the utility model.
[0019] Figure 6 This is the lighting light type distribution diagram provided by the utility model.
[0020] In the figure:
[0021] LED light source 1, modular optical component 2, front and rear light channels 21, light emitting surface 211, total reflection step surface 212, step surface 2121, connecting surface 2122, Fresnel condenser 213. DETAILED DESCRIPTION
[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example
[0023] like Figure 1-6 As shown, a modular optical system includes an LED light source 1 and a modular optical component 2. The LED light source 1 is located above the modular optical component 2. The light beam provided by the LED light source 1 forms an illumination light pattern through the modular optical component 2. The illumination light pattern is used to provide an auxiliary low beam function or a corner light function or a front fog light function. The modular optical component 2 here is the modular optical component referred to in the present utility model.
[0024] The modular optical component 2 is made of a transparent material, and includes a front and rear light channel 21. A light emitting surface 211 is provided at the front end of the front and rear light channel 21, and a total reflection step surface 212 is provided at the rear end of the front and rear light channel 21. A Fresnel condenser 213 is provided at the top of the front and rear light channel 21, and the orthographic projection of the Fresnel condenser 213 is located within the total reflection step surface 212 area. The Fresnel condenser 213 is used to collect and collimate the light beam, and the total reflection step surface 212 is used to totally reflect the light beam collected and collimated by the Fresnel condenser 213. The light emitting surface 211 is used to emit the light beam totally reflected by the total reflection step surface 212 to obtain an illumination light pattern. Specifically, the front end of the front and rear light channel 21 is provided with a light emitting surface 211, the rear end is provided with a total reflection step surface 212, and the top end is provided with a Fresnel condenser 213. The total reflection step surface 212 is composed of a plurality of continuous step surfaces 2121, and the step surface 2121 is inclined at an angle. The inclination angle of the step surface 2121 is set according to the required rotation angle of the light emitting surface 211 relative to the LED light source 1, so as to realize total reflection of the light beam provided by the LED light source 1. Two adjacent step surfaces 2121 are connected by a horizontally arranged connecting surface 2122. In this embodiment, the light emitting surface 211 is turned 90 degrees relative to the light beam of the LED light source 1, so the step surface 2121 is inclined at 45 degrees, so as to realize total reflection of the light beam provided by the LED light source 1.
[0025] In order to facilitate the setting of light-emitting surfaces 211 with different longitudinal diameters to meet the requirements of lamp shape, the transverse length of the connecting surface 2122 can be adjusted according to the size of the longitudinal diameter of the light-emitting surface 211. Specifically, the transverse length of the connecting surface 2122 can be adjusted to a corresponding size according to the requirements of the longitudinal diameter of the light-emitting surface 211, so that the size of the longitudinal diameter of the light-emitting surface 211 can be adjusted accordingly according to the requirements of shape, further improving the applicability.
[0026] Furthermore, the light emitting surface 211 is a free-form surface, which is divided by nine points according to the corresponding functional lighting requirements, and the surface types at other positions are smoothly connected and generated. The nine points are the first point (0, 0), the second point (0, 1), the third point (0, 2), the fourth point (1, 0), the fifth point (1, 1), the sixth point (1, 2), the seventh point (2, 0), the eighth point (2, 1) and the ninth point (2, 2). Each point defines a light beam divergence angle, thereby obtaining a corresponding functional lighting light type. Specifically, the first point (0, 0) is used to provide a light beam with a horizontal divergence angle of -30 degrees and a vertical divergence angle of -1 degree; the second point (0, 1) is used to provide a light beam with a horizontal divergence angle of 0 degree and a vertical divergence angle of -1 degree; the third point (0, 2) is used to provide a light beam with a horizontal divergence angle of 30 degrees and a vertical divergence angle of -1 degree; the fourth point (1, 0) is used to provide a light beam with a horizontal divergence angle of -30 degrees and a vertical divergence angle of -1 degree; the fifth point (1, 1) is used to provide a light beam with a horizontal divergence angle of 0 degrees and a vertical divergence angle of -2 degrees; the sixth point (1, 2) is used to provide a light beam with a horizontal divergence angle of 30 degrees and a vertical divergence angle of -1 degree; the seventh point (2, 0) is used to provide a light beam with a horizontal divergence angle of -30 degrees and a vertical divergence angle of -1 degree; the eighth point (2, 1) is used to provide a light beam with a horizontal divergence angle of 0 degree and a vertical divergence angle of -2 degrees; and the ninth point (2, 2) is used to provide a light beam with a horizontal divergence angle of 30 degrees and a vertical divergence angle of -1 degree. The beam divergence angle defined by each point is specifically shown in the table below. Of course, the horizontal divergence angle and vertical divergence angle of each point can be optimized and adjusted accordingly according to the corresponding functional lighting requirements. When the auxiliary low beam function needs to be provided, the auxiliary low beam function lighting requirements can be optimized and adjusted accordingly; when the corner light function needs to be provided, the corner light function lighting requirements can be optimized and adjusted accordingly; when the front fog light function needs to be provided, the front fog light function lighting requirements can be optimized and adjusted accordingly. The light beam provided by the LED light source 1 is collected and collimated by the Fresnel condenser 213. The collimated light beam is totally reflected by the total reflection step surface 212, and then optimized by the nine points on the light emitting surface 211 to obtain the corresponding functional lighting light type. In this embodiment, the light emitting surface 211 uses nine points to define the split design free-form surface. It only needs to control these nine points, and the surface types at other positions are smoothly connected to obtain the lighting light type that meets the corresponding functional lighting requirements, making the free-form surface design simpler and more convenient.
[0027] OK List Horizontal divergence angle Vertical divergence 0 0 -30° -1° 0 1 0° -1° 0 2 30° -1° 1 0 -30° -1° 1 1 0° -2° 1 2 30° -1° 2 0 -30° -1° 2 1 0° -2° 2 2 30° -1°
[0028] In order to better improve the effective utilization rate of light, a longitudinal spacing of 3-5 mm is set between the LED light source 1 and the Fresnel condenser 213. In this embodiment, the longitudinal spacing between the LED light source 1 and the Fresnel condenser 213 is 4 mm. Through the setting of the longitudinal spacing, the Fresnel condenser 213 collects as much light beam provided by the LED light source 1 as possible into the front and rear light channels 21, thereby reducing light energy loss and further improving the effective utilization rate of light.
[0029] Furthermore, the lateral distance deviation range between the center of the LED light source 1 and the center of the Fresnel condenser 213 is ±0.3mm. Since the optical function of the Fresnel condenser 213 is to collect and collimate the light beam, it has little effect on the illumination light pattern, so the positioning requirement of the LED light source 1 is not high and only needs to be within the range of ±0.3mm.
Claims
1. A modular optical assembly, characterized in that: The invention is made of transparent material, and comprises a front and rear light channel. A light emitting surface is arranged at the front end of the front and rear light channel, a total reflection step surface is arranged at the rear end of the front and rear light channel, a Fresnel condenser is arranged at the top end of the front and rear light channel, and the orthographic projection of the Fresnel condenser is located in the total reflection step surface area. The Fresnel condenser is used to collect and collimate the light beam, the total reflection step surface is used to totally reflect the light beam collected and collimated by the Fresnel condenser, the light emitting surface is used to emit the light beam totally reflected by the total reflection step surface to obtain an illumination light pattern, and the illumination light pattern is used to provide an auxiliary low beam function, a corner light function or a front fog light function.
2. The modular optical assembly according to claim 1, wherein: The total reflection step surface is composed of a plurality of continuous step surfaces, and the step surface is inclined at an angle. The inclination angle of the step surface is set according to the required rotation angle of the light emitting surface relative to the LED light source to achieve total reflection of the light beam provided by the LED light source. Two adjacent step surfaces are connected by a horizontally arranged connecting surface.
3. The modular optical assembly according to claim 2, characterized in that The light emitting surface is bent 90 degrees relative to the light beam of the LED light source, and the step surface is inclined at 45 degrees.
4. The modular optical assembly according to claim 2, wherein: The transverse length of the connecting surface can be adjusted according to the size of the longitudinal aperture of the light emitting surface.
5. The modular optical assembly according to claim 1, wherein: The light-emitting surface is a free-form surface, which is divided by nine points according to the corresponding functional lighting requirements, and the surface types at other positions are smoothly connected and generated. The nine points are the first point, the second point, the third point, the fourth point, the fifth point, the sixth point, the seventh point, the eighth point and the ninth point. Each point defines the light beam divergence angle, thereby obtaining the corresponding functional lighting light type.
6. The modular optical assembly according to claim 5, characterized in that The first point is used to provide a light beam with a horizontal divergence angle of -30 degrees and a vertical divergence angle of -1 degree; the second point is used to provide a light beam with a horizontal divergence angle of 0 degrees and a vertical divergence angle of -1 degree; the third point is used to provide a light beam with a horizontal divergence angle of 30 degrees and a vertical divergence angle of -1 degree; the fourth point is used to provide a light beam with a horizontal divergence angle of -30 degrees and a vertical divergence angle of -1 degree; the fifth point is used to provide a light beam with a horizontal divergence angle of 0 degrees and a vertical divergence angle of -2 degrees; the sixth point is used to provide a light beam with a horizontal divergence angle of 30 degrees and a vertical divergence angle of -1 degree; the seventh point is used to provide a light beam with a horizontal divergence angle of -30 degrees and a vertical divergence angle of -1 degree; The eighth point is used to provide a light beam with a horizontal divergence angle of 0 degrees and a vertical divergence angle of -2 degrees; the ninth point is used to provide a light beam with a horizontal divergence angle of 30 degrees and a vertical divergence angle of -1 degree.
7. A modular optical system, comprising an LED light source, characterized in that: It also includes a modular optical component as described in any one of claims 1 to 6, wherein the LED light source is located above the modular optical component, and a longitudinal spacing of 3 to 5 mm is set between the LED light source and the Fresnel condenser.
8. The module optical system according to claim 7, characterized in that: The lateral distance deviation range between the center of the LED light source and the center of the Fresnel condenser is ±0.3 mm.