High and lower beam integrated headlamp based on laser source and lighting method of headlamp

Abstract

The invention relates to a high and lower beam integrated headlamp based on a laser source. The headlamp comprises a light source reflection rotating mechanism, a high and lower beam reflection mirror and the laser source; the laser source comprises six blue laser diodes with the wavelength of 450 nm, an optical fiber and quartz substrate waveguide chip and a yellow fluorescent powder prism; the light source reflection mechanism comprises a framework wound with an electromagnetic coil, a magnet, an ejection rod and a light source reflection mirror, the rear middle portion of the light source reflection mirror is hinged to a lamp body, the rear lower portion of the light source reflection mirror is provided with a spherical head sleeve which is connected with a spherical head on the inner side of the ejection rod and can rotate relative to the spherical head, a spring arranged on the ejection rod in a sleeving manner ejects the framework and a convex shoulder of the ejection rod, and the high and lower beam reflection mirror comprises an upper lower beam reflection face and a lower high beam reflection face which are formed through description of the middle of the mirror. The laser source is adopted to meet the light distribution requirements of the high beam and the lower beam at the same time, through beam changing, switching of the high beam and the lower beam is achieved, the size and the weight of the headlamp are reduced, and vibration resistance and damage-resisting capacity of the light source are improved.

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

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