Illumination module and vehicle lamp
By introducing lighting components and expansion components that share secondary optical components into the lighting module, the interactive image display function with low cost and high cost performance in automotive headlights is realized, and the problems of high cost and damage to design aesthetics in the prior art are solved.
Patent Information
- Application Number
- CN202421986092.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-15
- Publication Date
- 2025-05-20
- Estimated Expiration
- 2034-08-15
AI Technical Summary
It is difficult for the prior art to realize a near (high) optical module with high cost performance, easy to use, and can realize basic image display function. Especially in automotive headlights, the cost of interactive pattern display function is high, and the addition of a projection light group will destroy the overall design aesthetics.
An illumination module is provided, including a lighting component for lighting and an extended component for projecting a setting of graphics or animation, both of which share a secondary optical element to project light through different parts to achieve projection of graphics or animation.
It realizes the interactive image display function without increasing complexity and cost, and the overall structure is simple, the shape is beautiful, and the production cost is low.
Smart Images
Figure CN222887345U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to vehicle lamps, and specifically, to an illumination module. In addition, the present application also relates to a vehicle lamp. Background Art
[0002] Existing interactive headlamps mainly have two technical routes: DLP (Digital Light Processing) and HD (High Definition). These two technical routes can achieve headlamps with tens of thousands to millions of pixels, enabling rich interactive scenarios. There are also some independent projection modules that can be installed in the front and rear lamps of a vehicle, or other positions on the vehicle body, to achieve functions such as reverse warning.
[0003] Traditional automotive front headlamps lack the function of interactive pattern display. Among them, the digital micromirror device required for the DLP technical route and the matrix pixel light source required for the HD technical route both have relatively high costs, restricting the widespread application of interactive headlamps. If a separate projection module is used, a separate area needs to be selected in the lamp body for its styling design, and the newly added projection lamp group often destroys the overall design aesthetic. There are disadvantages such as the need for separate design of the installation structure and circuit, which affect the styling. The addition of new parts will also increase the cost. If laser scanning or a DMD chip projection lamp group is selected, although more complex images can be projected, the cost will increase significantly. Since the size of the laser scanning or DMD chip projection lamp group is often large, it also poses a great challenge to the final styling design.
[0004] For the above reasons, it is difficult for the prior art to achieve a high-cost-performance, easy-to-use near (far) light module that can achieve basic image display functions. Summary of the Utility Model
[0005] One aspect of the present application aims to solve the problem of providing an illumination module. By setting an expansion component, the illumination module is formed with the function of projecting a set pattern or animation, and has a simple structure, low cost, and good use effect.
[0006] In addition, another aspect of the present application aims to solve the problem of providing a vehicle lamp that has the function of projecting a set pattern or animation, and has a simple structure and low cost.
[0007] To solve the above technical problems, one aspect of the present application provides an illumination module, including an illumination component for illumination and an expansion component for projecting a set pattern or animation. The illumination component and the expansion component share a secondary optical element, and the illumination component and the expansion component are respectively projected onto different parts of the secondary optical element.
[0008] Preferably, the light-emitting surface of the secondary optical element is continuously smooth, and the light-incident surface of the secondary optical element includes a first light-incident surface and a second light-incident surface. The illumination assembly projects onto the first light-incident surface of the secondary optical element, and the expansion assembly projects onto the second light-incident surface of the secondary optical element.
[0009] Preferably, the expansion assembly includes an expansion light source and an image unit. The image unit is used to form a set pattern. The light emitted by the expansion light source can form a projection pattern adapted to the set pattern after passing through the image unit, the second light-incident surface of the secondary optical element, and the light-emitting surface of the secondary optical element in sequence.
[0010] Preferably, the image unit includes a free-form surface lens for projecting the expansion light source as the set pattern, and the light-emitting surface of the secondary optical element and the second light-incident surface are formed as an equal-wall-thickness lens.
[0011] Preferably, the image unit includes a first optical element and an image element. The image element has a light-passing structure for forming the set pattern.
[0012] Preferably, the second light-incident surface of the secondary optical element and the light-emitting surface of the secondary optical element form a first lens, and the focal point of the first lens is located on the image element.
[0013] Preferably, the light-emitting surface and the second light-incident surface of the secondary optical element form an equal-wall-thickness lens. The expansion assembly further includes a lens assembly located between the image element and the secondary optical element, and the focal point of the lens assembly is located on the image element.
[0014] Preferably, the image unit is formed by the second light-incident surface of the secondary optical element, and the second light-incident surface of the secondary optical element is a free-form surface.
[0015] Preferably, the number of image units of the expansion assembly is multiple. The multiple image units respectively correspond to their respective expansion light sources, and the multiple expansion light sources are respectively controlled so that the projected patterns form a dynamic animation.
[0016] Preferably, the expansion assembly is arranged on at least one side of the illumination assembly; or the illumination assembly includes multiple sub-parts, and at least part of the expansion assembly is located between the sub-parts.
[0017] In addition, on the other hand, the present application also provides a vehicle lamp, including the lighting module according to any one of the above technical solutions.
[0018] Through the above technical solution, in the lighting module of the present application, on the one hand, by using the expansion component, the lighting module of the present application can not only realize the lighting function but also the information interaction function, that is, it can project the set graphics or animations; on the other hand, the lighting component and the expansion component share the secondary optical element, so the integration degree of the lighting module is relatively high, making the overall structure relatively simple, with beautiful appearance and low production cost.
[0019] Other advantages of the present application and the technical effects of the preferred embodiments will be further described in the following specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 is a schematic structural diagram of the first specific embodiment of the lighting module of the present application;
[0021] Figure 2 is a schematic structural diagram of the second specific embodiment of the lighting module of the present application;
[0022] Figure 3 is a specific structural diagram of a specific embodiment of the lighting module of the prior art;
[0023] Figure 4 is a specific structural diagram of a specific embodiment of the lighting module of the present application, which shows the structural diagram of the expansion to the left on the basis of Figure 3 ;
[0024] Figure 5 is Figure 4 a schematic structural diagram of a specific embodiment of the setting position of the image element in
[0025] Figure 6 is an enlarged view of a specific embodiment of the image element of the present application;
[0026] Figure 7 is Figure 4 the optical path diagram of
[0027] Figure 8 is one of the schematic structural diagrams of the second specific embodiment of the lighting module of the present application;
[0028] Figure 9 is the schematic diagram of the near-light illumination pattern formed by the lighting module of the present application;
[0029] Figure 10 is a schematic structural diagram of the third specific embodiment of the lighting module of the present application;
[0030] Figure 11 is a schematic structural diagram of the fourth specific embodiment of the lighting module of the present application;
[0031] Figure 12 It is a schematic structural diagram of the fifth specific embodiment of the lighting module of the present application;
[0032] Figure 13 It is a schematic structural diagram of the sixth specific embodiment of the lighting module of the present application;
[0033] Figure 14 It is a schematic diagram of the projection effect of the lighting module of the present application.
[0034] Description of the reference numerals in the drawings
[0035] 1 Lighting component 101 First light incident surface
[0036] 2 Expansion component
[0037] 201 Expansion light source 202 First optical element
[0038] 203 Image element 2031 Light passing structure
[0039] 204 Second light incident surface 205 Free-form surface lens
[0040] 3 Secondary optical element
[0041] 4 Lens assembly Detailed description of the specific implementation
[0042] The following is a detailed description of the specific implementation of the present application in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present application, and the protection scope of the present application is not limited to the following specific implementation.
[0043] In the description of the present application, it should also be noted that unless otherwise clearly specified and limited, the terms "installation" and "connection" 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 direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.
[0044] Specifically, the "lens with equal wall thickness" described in the present application indicates that the lens does not produce an optical effect on the light passing through it. It can include a lens with equal wall thickness on the light emitting surface and the light incident surface, or a lens with approximately equal wall thickness on the light emitting surface and the light incident surface. The present application is not limited thereto. The "focus located on the image unit" or "focus on the image unit" described in the present application can include that the focus is exactly located on the image unit, and the focus is located near the image unit. For example, the focus can be located within a range of 5 millimeters around the image unit.
[0045] Such as Figure 1 AndFigure 2 As shown in the figure, on the one hand, the present application provides an illumination module, which includes an illumination component 1 for illumination and an expansion component 2 for projecting a set pattern or animation. The illumination component 1 and the expansion component 2 share a secondary optical element 3, and the illumination component 1 and the expansion component 2 are respectively projected onto different parts of the secondary optical element 3.
[0046] In the present application, after the light passes through the expansion component 2, an image of a set pattern can be formed and projected onto the ground to form a projection image with the set pattern. If the illumination component 1 is provided with multiple groups of expansion components 2, each group of expansion components 2 can sequentially form a single projection image with the set pattern, and each projection image is sequentially projected onto the ground, thereby forming a projection with an animation effect. On the one hand, by using the expansion component, the illumination module of the present application can, on the basis of having functions such as high beam illumination, low beam illumination, or high and low beam illumination, also realize an information interaction function, that is, it can project a set pattern or animation; on the other hand, the illumination component and the expansion component share the secondary optical element, and the integration degree of the illumination module is relatively high, making the overall structure relatively simple, with a beautiful shape and low production cost.
[0047] The illumination component of the present application can provide a high beam illumination function, a low beam illumination function, a high and low beam illumination function, a signal function, or a combination of multiple illumination functions. The present application is not limited thereto. The illumination component of the present application can include an illumination light source, a primary optical element, and a secondary optical element. The primary optical element can be a lens, a mirror, a condenser, a thick wall, an optical waveguide, etc. The optical form of the illumination component is not limited thereto.
[0048] The secondary optical element 3 of the present application is preferably a lens.
[0049] A baffle can be provided between the illumination component 1 and the expansion component 2 of the present application to avoid light leakage.
[0050] As a preferred embodiment of the present application, the light-emitting surface of the secondary optical element 3 is continuous and smooth, and the light-incident surface of the secondary optical element 3 includes a first light-incident surface 101 and a second light-incident surface 204. The illumination component 1 is projected onto the first light-incident surface 101 of the secondary optical element 3, and the expansion component 2 is projected onto the second light-incident surface 204 of the secondary optical element 3. Thus, different functions can be realized by corresponding design of the light-incident surface of the secondary optical element 3. Through this design, the projection function can be added without damaging the overall beautiful shape of the module, making the illumination module have more abundant functions.
[0051] As a preferred embodiment of the present application, the expansion component 2 includes an expansion light source 201 and an image unit. The image unit is used to form a set pattern. The light emitted by the expansion light source 201 can form a projection pattern adapted to the set pattern after passing through the image unit, the second light incident surface 204 of the secondary optical element 3, and the light exit surface of the secondary optical element 3 in sequence.
[0052] In the first specific embodiment of the image unit of the present application, as Figure 10 shown, the expansion component 2 includes an expansion light source 201 and an image unit. The image unit is preferably a free-form surface lens 205. The surface shape of the free-form surface lens 205 is calculated by a mathematical equation system according to the required projection light pattern (set pattern) and structure design. In some embodiments, the light incident surface of the free-form surface lens 205 is formed as a plane, and the light exit surface is formed as a convex surface. The free-form surface shape of the light exit surface is used to control the set pattern of the projection formed by the projection of the expansion light source 201. The present application is not limited thereto. It is also possible to control the set pattern of the projection formed by the projection of the expansion light source 201 by the surface shape of the light incident surface of the free-form surface lens 205, or to jointly control the set pattern of the projection formed by the projection of the expansion light source 201 by the surface shapes of the light incident surface and the light exit surface of the free-form surface lens 205. When the light exit surface / light incident surface of the free-form surface lens 205 is a plane, only the free-form surface shape design of a single optical surface is required, thereby reducing the design cost of the free-form surface lens 205. When the surface shapes of the light exit surface and the light incident surface of the free-form surface lens 205 are jointly designed, a better projection effect can be achieved.
[0053] In this embodiment, the light exit surface and the second light incident surface 204 of the secondary optical element 3 are equal-wall thickness lenses. In some variations, the free-form surface can be designed on the second light incident surface 204, canceling the separate free-form surface lens, further simplifying the structure and reducing the cost.
[0054] In the second specific embodiment of the present application, as Figure 11 shown, the image unit includes a first optical element 202 and an image element 203. The image element 203 is provided with a light passing structure 2031, and the light passing structure 2031 is formed as a set pattern. After the light passes through the light passing structure 2031, it is projected onto the road surface to form a road surface projection adapted to the light passing structure 2031.
[0055] In this embodiment, the first optical element 202 can be an optical element such as a mirror, a lens, a thick wall, a condenser, a light guide, etc. The present application is not limited thereto.
[0056] In a preferred embodiment of the present application, as Figures 5 - 9 、 Figures 11 - 13As shown, the light passing structure 2031 is preferably a through-hole or through-groove structure that penetrates the thickness of the image element 203, and the shape of the light passing structure 2031 is the shape that needs to be projected finally. This application is not limited thereto, and the light passing structure 2031 can also be a transparent structure on the image element 203. It can be known that in this application, the shape and size of the light passing structure 2031 on the image element 203 can be controlled to control the shape and size of the image actually projected onto the road surface, that is, the information to be projected can be designed by changing the light passing structure 2031. Further, the light pattern position and size of the image actually projected onto the road surface can also be adjusted by the design of other optical elements of the expansion component 2 and / or the optical surface of the secondary optical element 3.
[0057] Further preferably, as Figure 12 shown, the second light incident surface 204 of the secondary optical element can be a convex curved surface, and cooperate with the light emitting surface to form a first lens with a focus on the image element 203, and project the light distribution on the image element onto the road surface.
[0058] Optionally, as Figure 13 shown, the light emitting surface and the second light incident surface 204 of the secondary optical element can be formed into a lens with equal wall thickness, and the expansion component 2 further includes a lens component 4 located between the image element 203 and the secondary optical element. The focus of the lens component 4 can be located on the image element 203. Thus, the projection control of the light passing through the image element 203 can be achieved through the lens component 4.
[0059] As a preferred embodiment of this application, as Figure 2 shown, the image unit is formed by the second light incident surface 204 of the secondary optical element 3, and the second light incident surface 204 of the secondary optical element 3 is a free-form surface.
[0060] In a specific embodiment of this application, as Figure 2 shown, the image unit is formed by the second light incident surface 204, and the second light incident surface 204 is formed into a free-form surface. The surface shape of the free-form surface lens is calculated by a mathematical equation set according to the required projection light pattern and structure design. Thus, in this embodiment, the graphic to be projected is only projected and formed by the surface shape design of the second light incident surface 204, without additional optical elements, reducing the number of parts of the lighting module and lowering the cost.
[0061] As a preferred embodiment of this application, the number of image units of the expansion component 2 is multiple, and the multiple image units respectively correspond to their respective expansion light sources 201, and the multiple expansion light sources 201 are respectively controlled so that the projected graphics form a dynamic animation.
[0062] In a specific embodiment of the present application, the extension component 2 is arranged on at least one side of the lighting component 1. Of course, it can also be arranged on both sides of the lighting component 1, and can be arranged asymmetrically or symmetrically, which depends on the actual light output requirements and usage requirements. Thus, except for sharing the secondary optical element 3, the extension component 2 and the lighting component 1 do not interfere with each other, and the extension component 2 and the lighting component 1 are respectively projected onto different parts of the secondary optical element 3, that is, the secondary optical element 3 corresponding to the lighting component 1 does not interfere with the secondary optical element 3 corresponding to the extension component 2. Thus, the lighting component 1 can directly use the existing design of the lighting component 1 without re-design. In some variations, the lighting component 1 may include multiple sub-parts (such as sub-parts respectively used to form partial light patterns), and at least part of the extension component 2 can also be arranged between the sub-parts of the lighting component 1 as required. The present application is not limited thereto.
[0063] In a specific embodiment of the present application, the number of image units of the extension component 2 is multiple, and the multiple image units respectively correspond to their respective extension light sources 201, and the multiple extension light sources 201 are respectively controlled so that the projected graphics form a dynamic animation.
[0064] In a preferred embodiment of the present application, as Figure 14 shown, taking the case where the extension component 2 is arranged on one side as an example, when two or more groups of extension components 2 are arranged on the same side of the lighting component, each group of extension components 2 can form an individual projection, and the lighting time and lighting sequence of each individual extension component 2 are respectively controlled to form a dynamic effect. Of course, if each extension component 2 is lit simultaneously, a projection effect with a combined pattern can be formed.
[0065] In this embodiment, 4 arrow symbols as Figure 14 shown can be realized on the road surface, with 2 on each of the left and right sides. By lighting them in sequence, a simple animation effect can be achieved, making the identification reminder more prominent. The function of this "lane change identification" is to prompt that the vehicle is about to change lanes in the direction indicated by the arrow, and the projection pattern can be projected onto a farther road surface. Under dark night conditions, especially when blocked by large vehicles such as trucks and buses, it has a better prompt and warning range than the body turn signal.
[0066] Further, a total of 4 projection patterns can be designed for the whole vehicle, 2 being "lane change signs", 1 being "distance keeping sign", and 1 being "deceleration sign", to realize the basic function of vehicle-human interaction. Or, a total of 4 projection patterns can be designed for the whole vehicle, 2 being "lane change signs" and 2 being "straight path reminder signs". The "straight path reminder signs" help the driver to clarify the wheel position at night, and help the driver to better keep in the lane or pass through narrow roads. In scenarios where the road markings are unclear or there are abnormal obstacles, the accuracy of the lane position identified by the on-vehicle lidar or camera is very low. However, the method of predicting the straight driving trajectory of the vehicle projected on the road surface can effectively avoid the problem of inaccurate identification of the drivable area and obstacles. The projection module can also realize other projection patterns according to needs, just modify the image unit or the target light pattern of the free-form surface lens as needed.
[0067] The following uses an optimal embodiment to explain the technical solution of the present application:
[0068] The lighting module of the present application includes a lighting component 1 and an expansion component 2. The lighting component 1 and the expansion component 2 share a secondary optical element 3. The light incident surface of the secondary optical element 3 includes a first light incident surface 101 and a second light incident surface 204. The light exit surface of the secondary optical element 3 is formed as a smooth and continuous curved surface. The expansion component 2 includes an expansion light source 201 and an image unit. The image unit includes a free-form surface lens for projecting the expansion light source 201 into a set pattern, or includes a first optical element 202 and an image element 203. The image element 203 has a light passing structure 2031 for forming a set pattern, or the image element 203 is formed by the second light incident surface 204 of the secondary optical element 3, and the second light incident surface 204 is a free-form surface. The lighting component 1 projects onto the first light incident surface 101 of the secondary optical element 3, and the expansion component 2 projects onto the second light incident surface 204 of the secondary optical element 3.
[0069] The lighting module of the present application has the following advantages:
[0070] First, under the condition of meeting the basic lighting requirements, the lighting module of the present application can also realize the information interaction function. For example, it can display information such as the vehicle's intention to change lanes, remind other vehicles to keep a distance or decelerate, etc. It can avoid the occlusion of relevant interaction information when the vehicle is in the visual blind area of other nearby vehicles, and other vehicles cannot observe the specific operation information of the vehicle. It is convenient for the vehicle owner to identify relevant information and can also remind other vehicles near the vehicle to pay attention to the interaction information of the vehicle, with good use effect.
[0071] Second, the combination of the lighting component 1 and the expansion component 2 has a simple structure, beautiful appearance, simple control structure, and low production cost.
[0072] In addition, on the other hand, the present application also provides a vehicle lamp, including the lighting module according to any one of the above technical solutions.
[0073] The preferred embodiments of the present application have been described in detail above with reference to the accompanying drawings. However, the present application is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present application, various simple modifications can be made to the technical solutions of the present application, and these simple modifications all fall within the protection scope of the present application.
[0074] In addition, it should be noted that, among the various specific technical features described in the above specific embodiments, without conflict, they can be combined in any suitable way. To avoid unnecessary repetition, the present application will not separately describe various possible combination methods.
[0075] Furthermore, any combination can be made between various different embodiments of the present application, as long as it does not violate the idea of the present application, and it should also be regarded as the content disclosed in the present application.
Claims
1. A lighting module, characterized in that: The invention comprises a lighting component (1) for lighting and an extension component (2) for projecting a set graphic or animation. The lighting component (1) and the extension component (2) share a secondary optical element (3), and the lighting component (1) and the extension component (2) project onto different parts of the secondary optical element (3) respectively.
2. The lighting module according to claim 1, characterized in that: The light emitting surface of the secondary optical element (3) is continuous and smooth, and the light incident surface of the secondary optical element (3) comprises a first light incident surface (101) and a second light incident surface (204); the lighting component (1) projects onto the first light incident surface (101) of the secondary optical element (3), and the extension component (2) projects onto the second light incident surface (204) of the secondary optical element (3).
3. The lighting module according to claim 1, characterized in that: The extension component (2) comprises an extension light source (201) and an image unit, wherein the image unit is used to form a set pattern, and the light emitted by the extension light source (201) can form a projection pattern that is compatible with the set pattern after passing through the image unit, the second light incident surface (204) of the secondary optical element (3), and the light exit surface of the secondary optical element (3) in sequence.
4. The lighting module according to claim 3, characterized in that: The image unit comprises a free-form surface lens (205) for projecting the extended light source (201) into the set pattern, and the light exit surface of the secondary optical element (3) and the second light entrance surface (204) are formed as lenses of equal wall thickness.
5. The lighting module according to claim 3, characterized in that: The image unit comprises a first optical element (202) and an image element (203), wherein the image element (203) has a light passing structure (2031) for forming the set pattern.
6. The lighting module according to claim 5, characterized in that: The second light incident surface (204) of the secondary optical element (3) and the light exit surface of the secondary optical element (3) form a first lens, and the focus of the first lens is located at the image element (203).
7. The lighting module according to claim 5, characterized in that: The light exit surface and the second light entrance surface (204) of the secondary optical element form a lens with equal wall thickness, and the extension component (2) further comprises a lens component (4) located between the image element (203) and the secondary optical element (3), wherein the focal point of the lens component (4) is located at the image element (203).
8. The lighting module according to claim 3, characterized in that: The image unit is formed by the second light incident surface (204) of the secondary optical element (3), and the second light incident surface (204) of the secondary optical element (3) is a free-form surface.
9. The lighting module according to claim 3, characterized in that: The extension component (2) has a plurality of image units, each of which corresponds to a respective extension light source (201), and each of the plurality of extension light sources (201) is controlled so that the projected graphics form a dynamic animation.
10. The lighting module according to any one of claims 1 to 9, characterized in that: The extension component (2) is arranged on at least one side of the lighting component (1); or The lighting assembly (1) comprises a plurality of sub-sections, and at least part of the extension assembly is located between the sub-sections.
11. A vehicle lamp, characterized in that: A lighting module comprising any one of claims 1 to 10.