Automobile headlamp optical system based on laser remote excitation fluorescent powder

Abstract

The invention discloses an automobile headlamp optical system based on laser remote excitation fluorescent powder. A laser light source is fixedly arranged on a laser light source heat dissipation structure; the inlet end of a light guide pipe is fixedly connected with the laser light source; the front face of a fluorescent powder piece is opposite to the outlet end of the light guide pipe, an included angle of a preset angle is formed between the light guide pipe and the normal of the fluorescent powder piece, and particles used for scattering are further arranged on the fluorescent powder piece; the front of a reflector is fixed on the back of the fluorescent powder piece; a fluorescent powder piece heat dissipation structure is fixedly connected with the reflector; a light distributionstructure comprises a low-beam light distribution unit used for carrying out low-beam light distribution on light emitted from the fluorescent powder piece or a high-beam light distribution unit usedfor carrying out high-beam light distribution on the light emitted from the fluorescent powder piece, wherein the low-beam light distribution unit or the high-beam light distribution unit is fixedly arranged on the fluorescent powder piece heat dissipation structure. Laser is adopted to remotely excite fluorescent powder to generate white light to be used as a light source of the headlamp, the requirement for reducing energy consumption at the present stage is met, meanwhile, light distribution is conducted through the free-form surface lens, and the freedom degree of light distribution is improved.

Description

technical field [0001] The invention belongs to the technical field of automobile headlight lighting, in particular to an automobile headlight optical system based on laser remote excitation of fluorescent powder. Background technique [0002] After LED headlights have been widely used, another type of semiconductor light source, laser diode, has become a potential more energy-saving light source for automotive headlights because of its higher electro-optical conversion efficiency. In recent years, there have been some researches on laser white light sources, but the output optical power of these light sources is not enough to meet the needs of automotive headlight sources. In order to make the laser light source can be better applied in the car headlights, it is inevitable to develop a laser white light source with higher output light power, and in the case of high power output, in order to ensure the normal output of the light source, it is necessary to have Reasonable he...

AI Technical Summary

Problems solved by technology

[0003] The automotive headlight optical system based on laser remote excitation of phosphor powder proposed by the present invention can provide sufficient luminous flux for headlight lighting, solve the heat dissipation problem of phosphor powder, and design a free-form surface lens for light distribution, which can be very good Suppression of adverse phenomena such as dispersion

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