Laser lamp device based on Cassegrain optical structure

Abstract

The invention relates to a laser lamp device based on a Cassegrain optical structure. The device comprises the Cassegrain optical structure consisting of a laser array, a laser light condensing main mirror and a laser light condensing secondary mirror, a white light collimating mirror and a fluorescent agent. Multiple ways of laser beams, emitted by the laser array, are reflected by the laser light condensing main mirror to reach the laser light condensing secondary mirror for reflecting again, and are focused on the fluorescent agent; the fluorescent agent is excited by laser to emit diffuse reflection white light; and the diffuse reflection white light is reflected by the white light collimating mirror to form high-strength white light beams for emitting. The emitting state of the white light beams can be changed through adjusting relative positions of the fluorescent agent and the white light collimating mirror. The device adopts the Cassegrain optical structure to gather the multiple ways of laser beams, emitted by the laser array, on the fluorescent agent, so that the laser irradiation intensity on the fluorescent agent can be increased exponentially. The device is simple in structure and stable in performance, and solves such problems as low emitting power, high high-power cost and high cost of a high-power laser lamp in a traditional single semiconductor blu-ray laser.

Description

technical field [0001] The invention relates to a laser lamp device, in particular to a laser lamp device based on a Cassegrain optical structure, and belongs to the technical field of laser applications. Background technique [0002] The principle of laser light is to use short-wave laser to irradiate phosphor material, and convert single-wavelength laser to diffuse continuous spectrum white light, so as to realize white light illumination. Compared with traditional incandescent lamps, xenon lamps and even LED lamps, laser lamps have the advantages of high energy efficiency ratio, energy saving and environmental protection, long life, small size and high stability. Therefore, the laser light is another reform of the lighting source after the LED light. It is called "reasonable next step". It is currently used as the headlight of some high-end cars, such as BMW's i8. [0003] Because semiconductor blue light lasers have the advantages of long life and small size, semiconduc...

AI Technical Summary

Problems solved by technology

The laser light source of the laser light device adopts multi-channel laser beam convergence to increase the output white light power of the laser light, and at the same time reduce the cost of high-power laser light; and the laser light device is not limited by the current laser light manufacturing process, and its performance is stable. Simple and easy to operate; it solves the problems of low output power of a single semiconductor blue light laser, high price of high-power semiconductor blue light lasers, and high cost of high-power laser lamps.

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