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Automobile signal lamp optical system

An optical system and signal light technology, applied in the field of automotive signal light optical systems, can solve the problems of yellowing, users have no aesthetic feeling, and cannot completely eliminate the yellowing of the tail, and achieve the effect of improving yellowing and uniform color.

Pending Publication Date: 2020-12-18
MAGNETI MARELLI AUTOMOTIVE COMPONENTS WUHU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Vehicle manufacturers want the light guide to have a uniform color tone from the beginning to the end, if the light guide is not uniform from the beginning to the end, this will result in an appearance that is not aesthetically pleasing to the user
In the past, mold suppliers optimized the light guide injection parameters to optimize the yellowing problem. However, for thin light guides with a diameter of less than 6mm and long light guides with a length greater than 600mm, by optimizing the injection parameters, the yellowing at the tail of the light guide can only be improved. Completely eliminate the problem of tail yellowing

Method used

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  • Automobile signal lamp optical system
  • Automobile signal lamp optical system
  • Automobile signal lamp optical system

Examples

Experimental program
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Effect test

Embodiment 1

[0020]Such asfigure 1 As shown, this embodiment provides an automotive signal light optical system, including an LED light source 1, a light guide 2, and a coloring device 3. The LED light source 1 provides light energy for the optical system, preferably a light emitting diode, and the light guide 2 is composed of Made of transparent plastic, this transparent plastic is preferably polymethylmethacrylate (PMMA) or polycarbonate (PC), here, such asfigure 2 As shown, the front part of the AA cross-sectional profile of the light guide 2 is in the shape of a circle, an ellipse, a rectangle, or a thin slice, allowing light to propagate to the tail through total reflection in the light guide, and the rear part is a reflective surface 5 passing through it. The optical design is configured with an optical pattern, which is used to destroy the total reflection of part of the light, so that part of the light in the light guide 2 can be emitted from the front surface of the light guide, thereby...

Embodiment 2

[0023]Such asimage 3 As shown, the difference between this embodiment and the first embodiment is that the coloring device 3 is placed in the tail area of ​​the light guide, because when the light guide is short, generally only the short tail is yellow, so the coloring device 3 only needs to be placed in The tail area.

Embodiment 3

[0025]Such asFigure 4 As shown, the difference between this embodiment and the first embodiment is: on the basis of improving the yellowing of the light guide tail by the coloring device 3, an auxiliary LED light source 12 is added to the light guide tail, and the auxiliary LED light source 12 improves the light guide tail area. Light energy can further improve the yellowing of the tail. This solution can not only improve the color of the tail of the light guide, but also increase the brightness of the tail, so that the overall lighting effect of the light guide is not only uniform in color, but also uniform in brightness.

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Abstract

The invention provides an automobile signal lamp optical system. The automobile signal lamp optical system comprises an LED light source, a light guide and a coloring device, wherein the LED light source is arranged at the focus of the light guide, the front part of the A-A section contour of the light guide is in a circular shape or an oval shape or a rectangular shape or a sheet shape, so that light is propagated from the head end to the tail end through total reflection in the light guide; and the rear part is a light reflecting surface, the coloring device is arranged in front of the emergent surface of the light guide, the area of the coloring device needs to be larger than or cover the emergent surface of the whole light guide, the tone of the coloring device is gradually changed inthe advancing direction of the light, the gradual change trend and the light guide yellowing trend are in a complementary relation, stray light in the light guide is filtered through the coloring device, so that the lighting effect that the head and the tail of the light guide are uniform and consistent is achieved, and the light guide is more attractive.

Description

Technical field[0001]The invention relates to the field of automotive lighting, and in particular to an automotive signal lamp optical system.Background technique[0002]With the continuous development of automobile lamp technology, the appearance of automobile lamps is changing with each passing day. More and more consumers and vehicle customers have put forward higher requirements for automobile lamps than ever before, especially the requirements for the lighting effect of automobile lamps. The more stringent it is, the more beautiful and consistent the overall uniformity of lighting is required. In order to achieve a very compact structure of the lamp, the manufacturer has now developed a device through a light source and a light guide. The light beam emitted from the light source propagates into the light guide, and the light propagates forward through the full emission in the light guide. During the propagation process, part of the light enters the rear Optical surface, the optic...

Claims

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Application Information

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IPC IPC(8): F21S43/14F21S43/20F21S43/235F21S43/30F21W107/10F21Y115/10
CPCF21Y2115/10F21S43/14F21S43/20F21S43/235F21S43/30F21W2107/10
Inventor 刘昊高坤
Owner MAGNETI MARELLI AUTOMOTIVE COMPONENTS WUHU