An optical system capable of achieving waterfall light curtain effect

Abstract

The utility model belongs to the field of automobile combination tail light, exterior trim lamp, specifically relates to an optical system that can realize waterfall type light curtain effect, including LED light source, light guide strip, light guide support, light -evening piece, exterior trim board and thick wall spare, the light guide strip both ends each sets up a LED light source, the light guide strip is located in light guide support, the light guide strip cross section is like a bulb, thick wall spare is located in the front of light guide strip, light -evening piece is located thick wall spare below and light -evening piece cross section is L -shaped, light -evening piece is located in the front of light guide support lower part, thick wall spare is located in the front of light guide support middle part and upper part, and exterior trim board is obliquely arranged below light -evening piece. The utility model places two LED light sources in the both ends of light guide strip, uses simple optical parts, realizes even waterfall type light curtain effect.

Description

Technical Field

[0001] This utility model belongs to the field of automotive combination taillights and exterior lights, specifically relating to an optical system that can achieve a waterfall-style light curtain effect. Background Technology

[0002] With the development of automotive technology and the changing trends in automotive styling, the desired lighting effects for car lights are becoming increasingly novel, such as the effect of a continuous light curtain. Currently, there are two ways to achieve this effect: one is by arranging a large number of LED light sources, with the light reflecting multiple times onto the exterior trim panel; the other is by adding light guide plates to the sides of long light guide strips, and adding patterns of varying sizes and densities on these plates. However, both methods are structurally complex and involve an excessive number of LED light sources. Utility Model Content

[0003] To address the aforementioned problems in the existing technology, this utility model provides an optical system that can achieve a waterfall-style light curtain effect. Two LED light sources are placed at both ends of the light guide strip, and simple optical components are used to achieve a uniform waterfall-style light curtain effect.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an optical system capable of achieving a waterfall-style light curtain effect, comprising an LED light source, a light guide strip, a light guide bracket, a light homogenizing sheet, an outer decorative panel, and a thick-walled component. An LED light source is disposed at each end of the light guide strip, which is located within the light guide bracket. The light guide strip has a bulb-shaped cross-section. The thick-walled component is located in front of the light guide strip. The light homogenizing sheet is located below the thick-walled component and has an L-shaped cross-section. The light homogenizing sheet is located in front of the lower part of the light guide bracket. The thick-walled component is located in front of the middle and upper parts of the light guide bracket. The outer decorative panel is obliquely disposed below the light homogenizing sheet.

[0005] Furthermore, several light guide teeth are provided behind the light guide strip, and the cross-sectional shape of the light guide bracket is that the upper and lower parts are vertical, and the middle part is concave to form a groove for placing the light guide strip.

[0006] Furthermore, the front of the thick-walled component is tilted forward and has an optical pattern, and the tilt direction of the outer trim panel is consistent with the tilt direction of the front of the thick-walled component.

[0007] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model opens light guide teeth behind the light guide strip, so that the light passes through the light guide teeth on the light guide strip, is reflected and propagated, and then emits a light strip and enters the thick-walled part. After being reflected and diffused by the front surface of the thick-walled part, the light then enters the light doubling plate, diffuses again in the light doubling plate, and finally hits the outer decorative panel with diffuse reflection to form a light curtain. This utility model only needs to use two LED light sources and simple optical components to achieve a waterfall-style light curtain effect with brightness gradually decreasing from top to bottom. It is low in cost, simple and reasonable in structure, and has a good light curtain effect. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the structure of this utility model;

[0009] Figure 2 for Figure 1 Sectional view at point AA;

[0010] Figure 3 This is a schematic diagram of the light guide strip structure of this utility model;

[0011] Figure 4 This is a schematic diagram illustrating the optical principle of this utility model.

[0012] Figure 5 This is a rendering of the vehicle headlights of this utility model. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0014] Please see Figure 1-5The technical solution provided by this utility model is as follows: an optical system that can achieve a waterfall-style light curtain effect, including an LED light source 1, a light guide strip 2, a light guide bracket 3, a light diffuser 4, an outer decorative panel 5, and a thick-walled component 6. An LED light source 1 is installed at each end of the light guide strip 2, with a gap between the two LED light sources 1 and the light guide strip 2. The light from the two LED light sources 1 enters the interior of the light guide strip 2 from both ends, is reflected inside the light guide strip 2, and then emits a light strip forward from the light guide strip 2. The light guide strip 2 is located in the light guide bracket 3, which is a plastic component with diffuse reflection effect, capable of collecting and utilizing stray light to improve optical efficiency. The cross-section of the light guide strip 2 is bulb-shaped, and the front of the light guide strip 2 is arc-shaped, increasing the exit surface area of ​​the light guide strip 2 and allowing more light to escape. The thick-walled component 6 is located in front of the light guide strip 2, and the light from... After the light guide strip 2 is emitted, it enters the thick-walled component 6. Then, the light is homogenized for the first time in the thick-walled component 6 and reflected to change the light path before exiting from below the thick-walled component 6. The light homogenizer 4 is located below the thick-walled component 6 and has an L-shaped cross-section. The light homogenizer 4 can be configured in two ways, either made of a diffusion material or made of a transparent material with multi-layered optical diffusion patterns. In this way, the light homogenizer 4 can homogenize the light. The light homogenizer 4 is located in front of the lower part of the light guide bracket 3, and the thick-walled component 6 is located in front of the middle and upper parts of the light guide bracket 3. After the light is emitted from the thick-walled component 6, it enters the light homogenizer 4, which homogenizes the light a second time. The outer panel 5 is tilted and set below the light homogenizer 4. After the light is emitted from the light homogenizer 4, it hits the outer panel 5, which has a diffuse reflection effect, and then forms a light curtain effect.

[0015] Specifically, such as Figure 3 As shown, several light guide teeth 21 are provided behind the light guide strip 2. The light guide strip 2 is provided with strip-shaped light guide teeth 21. After the light emitted by the LED light source 1 enters the light guide strip 2, it is reflected at the light guide teeth 21 and then emitted from the front of the light guide strip 2 to form a light strip. At this time, the light emitted from the light guide strip 2 is not completely uniform. The light hitting the front is stronger, and the light above and below is weaker. The light in the bright area on the outer panel 5 comes from the strong light in front of the light guide strip 2, and the dark area below comes from the weaker light above and below the light guide strip 2. The cross-sectional shape of the light guide bracket 3 is that the upper and lower parts are vertical, and the middle is concave to form a groove 31 for placing the light guide strip 2.

[0016] Specifically, the front of the thick-walled component 6 is tilted forward and has an optical pattern. The angle between the front and bottom surfaces of the thick-walled component 6 is acute. Therefore, the propagation direction and diffusion of the light source can be changed in front of the thick-walled component 6. The tilt direction of the outer trim panel 5 is the same as the tilt direction of the front of the thick-walled component 6. Therefore, the propagation direction of the light source can be changed on the outer trim panel 5. The same tilt direction of the thick-walled component 6 and the outer trim panel 5 allows the light to change its path twice and finally become the same direction as the light path when it is incident on the thick-walled component 6. Thus, the light emitted from the outer trim panel 5 is emitted forward.

[0017] The optical principle of this utility model is as follows: the light emitted by the LED light source 1 enters the light guide strip 2 and propagates inside the light guide strip 2 (the length of the light guide strip 2 can be adjusted according to the shape requirements). Then, the light is reflected by the light guide teeth 21 behind the light guide strip 2 and propagates out from the front of the light guide strip 2 to form a light strip. Then, it enters the interior of the thick-walled part 6. Through the action of the front surface of the thick-walled part 6 with a certain angle, the direction of light propagation is changed. Under the action of the optical pattern on the front surface of the thick-walled part 6, the light is diffused and homogenized. Then, it enters the light homogenizer 4 downward. After being diffused by the light homogenizer 4, the light entering the light homogenizer 4 finally hits the outer decorative panel 5 with diffuse reflection effect, forming a light curtain effect.

[0018] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An optical system capable of achieving a waterfall-style light curtain effect, characterized in that, The light guide includes an LED light source (1), a light guide strip (2), a light guide bracket (3), a light diffuser (4), an outer decorative panel (5), and a thick-walled component (6). Each end of the light guide strip (2) is equipped with an LED light source (1). The light guide strip (2) is located in the light guide bracket (3). The cross-section of the light guide strip (2) is bulb-shaped. The thick-walled component (6) is located in front of the light guide strip (2). The light diffuser (4) is located below the thick-walled component (6) and has an L-shaped cross-section. The light diffuser (4) is located in front of the lower part of the light guide bracket (3). The thick-walled component (6) is located in front of the middle and upper parts of the light guide bracket (3). The outer decorative panel (5) is inclinedly arranged below the light diffuser (4).

2. The optical system for achieving a waterfall-style light curtain effect according to claim 1, characterized in that, The light guide strip (2) has several light guide teeth (21) on its back. The cross-sectional shape of the light guide bracket (3) is that the upper and lower parts are vertical and the middle part is concave to form a groove (31) for placing the light guide strip (2).

3. The optical system for achieving a waterfall-style light curtain effect according to claim 1, characterized in that, The front of the thick-walled component (6) is tilted forward and has an optical pattern. The tilting direction of the outer trim panel (5) is consistent with the tilting direction of the front of the thick-walled component (6).

Images