Light guide lens and vehicle head lamp

Abstract

The invention discloses a light guide lens, and the lens is provided with a bottom surface, a light emitting surface, a first reflecting surface and a reflecting structure. The bottom surface is provided with a first side edge and a second side edge which are opposite to each other, and a light incident part. The light emitting surface is connected to the first side edge. The first reflecting surface is opposite to a part of the bottom surface and is connected to the light emitting surface, and the light incident part is located in a projection area of vertical projection of the first reflecting surface to the bottom surface. The reflection structure comprises a plurality of reflection surfaces connected between the second side edge and the first reflection surface. The invention also provides a vehicle head lamp comprising the light guide lens.

Description

technical field [0001] The invention relates to a light guide element, in particular to a light guide lens for guiding the light emitted by a light-emitting element of a headlight and a vehicle headlight with the light guide lens. Background technique [0002] In recent years, headlights of vehicles have gradually adopted light-emitting diodes as light sources. [0003] When applied to the headlights of vehicles, LEDs must be matched with appropriate light guide elements to make the headlights emit the required light shape and angle. The light-emitting diodes can be arranged outside a surface of the light-guiding element, and the light-guiding element further has a reflective surface for reflecting the light emitted by the light-emitting diodes and a light-emitting surface for emitting the light reflected by the reflective surface. [0004] The reflective surface of the light guide element in the prior art is formed by electroplating a reflective layer, which will increase ...

AI Technical Summary

Problems solved by technology

[0004] The reflective surface of the light guide element in the prior art is formed by electroplating a reflective layer, which will increase the complexity of making the light guide element, resulting in higher manufacturing costs

[0005] In addition, the reflective surface of the light guide element in the prior art has only a single curvature in any section, and the curvature must be extended upwards to a certain height in order to receive most of the light from the LED in the corresponding section, which causes The light-guiding element must have a corresponding thickness, resulting in an inability to reduce manufacturing costs

[0006] In addition, the reflective surface formed by the electroplating reflective layer is a metal reflective surface, which will absorb part of the light emitted by the LED, resulting in light loss

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