LED total reflection lens, LED light guiding body and automobile lamp

Abstract

The invention relates to an LED total reflection lens, an LED light guiding body and an automobile lamp. The LED total reflection lens is of an integrated type polyhedron structure; the main structureis a cuboid, and is provided with a light incoming face, a light outgoing face, a conical total-reflection face, a combined total-reflection face, a chamfered total-reflection face and an air lens; the air lens is of an integrated and up-down through structure; the air lens is divided into an upper refraction face and a lower refraction face; the lower refraction face is a curved face or a plane;the middle portion of the upper refraction face is a plane or a curved face; tooth-shaped structure uniformly distributed on the two sides of the middle portion are on the two sides of the upper refraction face; the tooth-shaped structures are total-reflection teeth; and the tooth face of the total-reflection teeth is a total-reflection face. The LED total reflection lens is arranged into the polyhedron structure, by means of changes of different face types, light ray is collected and then is allocated, a uniform visual effect can be achieved, the energy utilizing rate is high, the using number of LED light sources is small, and the problems that an existing light guide is poor in light allocating uniformity, and the energy utilizing rate is low are solved.

Description

technical field [0001] The invention relates to the technical field of LED vehicle lamps, in particular to an LED total reflection lens, an LED light guide body and a vehicle lamp. Background technique [0002] LEDs have long lifespan, low energy consumption and increasingly mature production technology, which can be mass-produced and supplied. Currently, they are widely used in automotive lighting and decoration, road lighting, projectors, and indoor and outdoor lighting decoration. Since the luminous characteristics of most conventional LEDs are symmetrical Lambertian radiation, they cannot meet the optical requirements of various occasions. In order to meet the light efficiency and light distribution requirements of various occasions and improve the performance of the system, it is necessary to carry out a secondary optical design for the LED to accurately control the light distribution, and to reasonably distribute the light energy emitted by the LED chip. [0003] For ...

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a kind of LED total reflection lens, LED light guide body and automobile lamp. The present invention sets the LED total reflection lens into a polyhedron structure, collects and redistributes the light through the change of different surface shapes, and can realize Uniform visual effect, high energy utilization rate, and the number of LED light sources used is small, which solves the problem of poor uniformity of light distribution and low energy utilization rate of the existing light guide

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