A light guide for vehicle lights and vehicle lights with the light guide

Abstract

The present invention provides a light guide for a vehicle lamp and a vehicle lamp with the light guide, the light guide includes at least one light guide unit, the light guide unit includes an incident part and an output part, the incident part includes at least one incident unit, The edge of the incident part extends along a first direction to form two pairs of side walls, and the ends of the side walls surround to form the exit part; at least one pair of the side walls is inclined, and the included angle with a second direction is an acute angle, the second direction is perpendicular to the first direction; the inclined sidewall is provided with at least one stepped stripe extending along the first direction, and each stripe includes parallel to the first surface. After the above technical solution is adopted, the light pattern is parallel to the horizontal direction, which meets the design requirements; the utilization efficiency of the light source is improved; the number and cost of the light source are reduced, and the energy consumption is reduced.

Description

technical field [0001] The invention relates to the field of vehicle lighting, in particular to a light guide for vehicle lights and a vehicle light with the light guide. Background technique [0002] A light guide is a component that acts on the propagation of light emitted by a light source to change its optical characteristics, and is a commonly used component on car lights. In order to meet the industry's requirements for the lighting effect of car lights, such as uniformity, high brightness and small light output area, the light guide is often designed as a horizontal, flat and vertical geometry. Such as figure 1 As shown, it is a projection diagram of a light guide in the prior art towards the exit surface. It can be seen that the exit surface of the light guide is rectangular, and the side walls perpendicular to the exit surface are vertical or horizontal, so that the light pattern is distributed on the exit surface. The direction is concentrated and the optical per...

AI Technical Summary

Problems solved by technology

However, the shape and structure of the light guide is often affected by the design of the car light. In some car lights, the side wall of the light guide is required to be inclined, for example, the angle between the side wall and the vertical direction is 10°. In this case, part of the light is in the light guide. When propagating, it will be reflected by the inclined side wall. Since the reflective surface is inclined, it will cause the light distribution angle of part of the light to be poor, so that the light guide cannot meet the optical performance requirements (mainly brightness requirements)

[0003] The solution in the prior art is often to increase the number of light sources and lumens, or to design a more complex optical system, which will lead to increased cost and energy consumption

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