A kind of headlight light source and its manufacturing method

Abstract

The invention discloses a vehicle lamp light source and a manufacturing process thereof. The vehicle lamp light source comprises a lamp source assembly. The lamp source assembly comprises a laser light source, a phosphor and a multi-section reflecting cover; the phosphor is irradiated by the laser light source to emit light; the multi-section reflecting cover is provided with a flat cover surfaceand a parabolic cover surface which are sequentially connected from back to front; light emitted by the phosphor is sequentially divided into a detection light beam, a far light beam and a near lightbeam from back to front according to angles; the detection light beam is reflected by the flat cover surface and then is irradiated to a light detector arranged above the flat cover surface; and the far light beam is reflected by the parabolic cover surface to form far illumination light. The function application of the laser light source is increased under the condition of low energy consumption,and the waste of resources is reduced; and meanwhile, a light detector is used for collecting part of distributed and collected laser beams to feed back the irradiation light intensity, so that a current irradiation object is compared and judged to adjust the irradiation intensity, and the environmental protection benefit is increased.

Description

technical field [0001] The invention belongs to the field of car lights, and in particular relates to a car light source and a manufacturing method thereof. Background technique [0002] Car lights mainly include four categories: halogen lights, xenon lights, LED lights and laser lights. Compared with the other three types of lights, laser lights have good lighting effects, good energy saving, fast startup speed, Small size and other advantages; the principle is that the blue light of the laser light-emitting diode will penetrate the fluorescent phosphor material in the headlight unit and convert it into a diffused white light. [0003] The invention patent with the notification number CN108036275A in the prior art discloses "laser car lights". The technical solution includes a laser light source, a phosphor, a parabolic reflector, a DMD chip, and a projection lens. The laser light source is used to excite the phosphor to emit light. The light emitted by the phosphor is col...

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Problems solved by technology

[0005] The parabolic reflector has only one reflective surface and irradiation function, and the beam collection function is relatively simple. Under the current high cost of laser lights, it is a waste of resources not to fully use the laser beam, and even if there is no distributed collection If the same light beam can achieve multiple functions, the energy consumption of the laser will also increase simultaneously; at the same time, when the laser car light is irradiated, because the power of the laser car light is generally greater than 500mW, it is Class IV, and direct irradiation is harmful to the human body. The intensity of the irradiated light cannot be fed back in real time to compare and judge with the current irradiated object, and the environmental protection benefit is low

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