Large-width welcome carpet lamp module
By designing a large-format welcome carpet light module and adopting a multi-light path and microlens array lens optical axis tilting design, the problems of small projection pattern size and insufficient uniformity of microlens array projection lights were solved, achieving ultra-large-format projection and pattern consistency, and reducing production costs.
Patent Information
- Application Number
- CN202520335869.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-28
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2035-02-28
AI Technical Summary
Existing microlens array projection lamps suffer from problems such as small projected pattern size, insufficient uniformity, complex optical design and manufacturing, high cost, significant impact from environmental factors, and poor heat dissipation design.
Design a large-format welcome carpet light module with three independent optical paths. Each optical path includes an LED light source, a collimating lens, and a microlens array lens. The optical axis of the optical path is tilted. The microlens array lens has multiple projection channels and pattern layers. The brightness distribution is adjusted through differentiated design to achieve beam blocking and splicing.
Achieve ultra-wide projection pattern effects, increase the visual impact of the light carpet, ensure uniform gradient of the projection pattern, reduce production costs, and improve pattern consistency.
Smart Images
Figure CN223826115U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of vehicle welcome light technology, specifically relating to a large-width welcome carpet light module. Background Technology
[0002] Microlens array (MLA) technology is frequently used in the automotive industry for welcome carpet projection lights. When the car door is opened, the welcome carpet projection light projects the car brand logo, model name, or personalized pattern onto the ground, enhancing the car's interior's sophistication and personalization.
[0003] However, projection lamp technology based on microlens arrays has the following drawbacks:
[0004] In terms of optical design and manufacturing, the requirements for optical design and manufacturing processes are extremely high. Each lens unit needs to be precisely shaped and positioned; otherwise, it will lead to problems such as blurred projected images, astigmatism, or ghosting, which are difficult to solve with simple adjustments. At the same time, microlens arrays and their related optical systems are small in size and complex in structure, making assembly and debugging difficult. They require specialized equipment and technicians, resulting in low production efficiency and increased costs. In addition, the optical performance of microlens arrays is greatly affected by environmental factors such as temperature and humidity. Environmental changes may cause changes in the refractive index of the lens material, resulting in problems such as color difference and distortion in the projected image, which affects the projection effect.
[0005] In terms of light source and heat dissipation, high-brightness LED light sources are usually used, which generate significant heat. However, some existing products have poor heat dissipation design, with no ventilation holes in the outer shell and low thermal conductivity of the PCB board, which leads to increased internal temperature of the module, causing light decay of the LED lights, reducing screen brightness and clarity, and even shortening their lifespan.
[0006] In terms of system cost and application, the manufacturing process of high-precision microlens arrays is complex and requires advanced equipment and technology, resulting in high production costs and product prices, which limits market penetration. Moreover, the illumination area of a single microlens array is limited. If it is necessary to expand the illumination or projection range, multiple projection lamps need to be installed in parallel or a complex optical extension system needs to be used, which increases the complexity and cost of the system. Utility Model Content
[0007] The purpose of this invention is to solve the problems of existing microlens array projection lamps being limited by the field of view, having small projection pattern size, and insufficient uniformity, and to design a large-width welcome carpet light module.
[0008] To achieve the above objectives, the technical solution adopted by this utility model is: a large-width welcome carpet light module, comprising three independent light paths for splicing to form a ground projection pattern, wherein the optical axes of the three independent light paths are designed to be inclined to each other, and each of the independent light paths comprises an LED light source, a collimating lens and a microlens array lens arranged in sequence, wherein the microlens array lens has multiple projection channels, and each projection channel is provided with a pattern layer, wherein the pattern layer can adjust the brightness distribution of the projection pattern through differentiated design.
[0009] Preferably, the microlens array lens includes an incident lens layer, a pattern layer, a substrate layer, and an exit lens layer arranged sequentially along the direction of the LED light source.
[0010] Preferably, the field of view of the microlens array lens is greater than 25°.
[0011] Preferably, the angle between the optical axes of two adjacent microlens array lenses is 10-18°.
[0012] Preferably, the number of projection channels of the microlens array lens is 100-199.
[0013] Preferably, the pattern layer achieves differentiation by occluding different areas.
[0014] Preferably, the projection pattern is spliced between the independent optical paths using a dark area splicing method.
[0015] After adopting the above technical solution, the large-width welcome carpet light module provided by this utility model has the following beneficial effects:
[0016] (1) This utility model can achieve ultra-wide projection pattern effect, increasing the visual impact of the light carpet;
[0017] (2) This utility model can achieve uniform gradient of the projected pattern on the ground and increase the consistency of the pattern. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the structure of a large-width welcome carpet light module according to the present invention;
[0019] Figure 2 This is a side view of the microlens array lens in this utility model;
[0020] Figure 3 This is a front view of the microlens array lens in this utility model;
[0021] Figure 4 This is a schematic diagram of the projection pattern splicing of this utility model;
[0022] Figure 5This is a schematic diagram of the optical field control method of the microlens array lens of this utility model.
[0023] The components are: LED light source 1, collimating lens 2, microlens array lens 3, incident lens layer 4, pattern layer 5, substrate layer 6, and exit lens layer 7. Detailed Implementation
[0024] The present invention will now be described in further clear and complete detail with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0025] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.
[0026] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.
[0027] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms 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 on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.
[0028] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.
[0029] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.
[0030] This utility model discloses a large-width welcome carpet light module, such as... Figure 1-5 As shown, the light path includes three independent optical paths for splicing to form a ground projection pattern. The optical axes of the three independent optical paths are designed to be tilted towards each other to form a specific angle. The design of splicing the dark areas of the pattern between adjacent optical paths can effectively expand the projection range of the light carpet. Each of the independent optical paths includes an LED light source 1, a collimating lens 2, and a microlens array lens 3 arranged in sequence. The microlens array lens 3 has multiple projection channels. Each projection channel is provided with a pattern layer 5. The pattern layer 5 can adjust the brightness distribution of the projection pattern through differentiated design, ultimately achieving a wide and uniform projection effect.
[0031] Specifically, the microlens array lens 3 includes an incident lens layer 4, a pattern layer 5, a base layer 6, and an exit lens layer 7 arranged sequentially along the direction of the LED light source 1. The field of view of the microlens array lens 3 is greater than 25°, the angle between the optical axes of two adjacent microlens array lenses 3 is 10-18°, and the number of projection channels of the microlens array lens 3 is 100-199. The pattern layer 5 achieves differentiation by blocking different areas, that is, it blocks the light beam in some areas within the projection channel, thereby controlling the light field of the light beam in each channel and affecting the distribution state of the superimposed light field.
[0032] In summary, the large-width welcome carpet light module provided by this utility model can achieve ultra-wide projection pattern effects, increase the visual impact of the light carpet, and at the same time achieve uniform gradient of the projected pattern on the ground, increasing the consistency of the pattern. It has great market value and is worthy of widespread promotion and application.
[0033] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A wide-format welcome carpet light module, characterized in that: It includes three independent optical paths for splicing to form a ground projection pattern, and the optical axes of the three independent optical paths are designed to be tilted towards each other. Each of the independent optical paths includes an LED light source (1), a collimating lens (2) and a microlens array lens (3) arranged in sequence. The microlens array lens (3) has multiple projection channels, and each projection channel is provided with a pattern layer (5). The pattern layer (5) can adjust the brightness distribution of the projection pattern through differentiated design.
2. The large-width welcome carpet light module according to claim 1, characterized in that: The microlens array lens (3) includes an incident lens layer (4), a pattern layer (5), a substrate layer (6), and an exit lens layer (7) arranged sequentially along the direction of the LED light source (1).
3. The large-width welcome carpet light module according to claim 1, characterized in that: The field of view of the microlens array lens (3) is greater than 25°.
4. The large-width welcome carpet light module according to claim 1, characterized in that: The included angle between the optical axes of two adjacent microlens array lenses (3) is 10-18°.
5. A large-width welcome carpet light module according to claim 1, characterized in that: The number of projection channels of the microlens array lens (3) is 100-199.
6. A large-width welcome carpet light module according to claim 1, characterized in that: The pattern layer (5) achieves differentiation by occluding different areas.
7. A large-width welcome carpet light module according to claim 1, characterized in that: The independent optical paths are spliced together using a dark area splicing method to achieve the splicing of the projected patterns.