High and low light integrated headlamp based on laser light source and lighting method thereof

Abstract

The invention relates to a laser light source integrated far and near beam headlamp, which includes a light source reflection and rotation mechanism, a near and far beam reflector and a laser light source. The laser light source includes six blue laser diodes with a wavelength of 450nm, an optical fiber and a quartz substrate light source. The waveguide chip and the prism of yellow fluorescent powder, the light source reflection and rotation mechanism include a skeleton wound with an electromagnetic coil, a magnet, a push rod and a light source reflector, the rear middle part of the light source reflector is hinged on the lamp body, and a ball The headgear is connected with the ball head on the inner side of the mandrel and can be rotated relatively. The spring set on the mandrel bears on the frame and the shoulder of the mandrel. Lower high beam reflector. The invention adopts a laser light source to meet the light distribution requirements of high beam and low beam at the same time, and realizes switching between high beam and low beam through dimming, which can reduce the size and weight of lamps, and improve the anti-vibration and anti-destructive ability of the light source.

Description

technical field [0001] The invention relates to a headlamp integrating far and near beams based on a laser light source and a lighting method thereof, belonging to the technical field of vehicle lamps. Background technique [0002] Compared with traditional light sources such as metal lamps, high-pressure gas lamps and LEDs, lasers have the advantages of low energy consumption, pure light color, high brightness, good directionality, and small size of the light distribution mechanism. However, at present, the small-sized and high-power laser diodes are all less than 2W. When applied in the field of high-power lighting, it is necessary to adopt multi-light source system optical packaging technology. [0003] In the field of headlights, currently the most advanced integrated multi-light source in the world is to use three blue laser diodes to converge through a reflector to a prism covered with yellow phosphor, and then convert it into diffused white light and then project it t...

AI Technical Summary

Problems solved by technology

[0003] In the field of headlights, currently the most advanced integrated multi-light source in the world is to use three blue laser diodes to converge through a reflector to a prism covered with yellow phosphor, and then convert it into diffused white light and then project it to the reflector, but two sets of laser diodes are required. The optical module packaged according to this method can meet the light distribution requirements of the high beam, but the low beam still uses LED light source, because two different light sources are used in one headlight, so the laser light source cannot meet the high beam and low beam distribution at the same time light requirements

Secondly, the laser light source that meets the light distribution requirements of the high beam needs two sets of packaged optical modules, and the optical module is an open space optical path inside the lamp, not closed, and the optical effect is easily disturbed by dust or impurities, and the reflector The processing of the prism and prism is complicated, and the optical path needs precise positioning to achieve the optical effect. However, in actual operation, due to the use of two-way optical modules, it is very difficult to accurately position. Due to poor shock resistance, it is easy to move and affect the optical effect.

Furthermore, the use of two sets of optical modules also leads to taking up more space for the lamp

Images