System achieving uniform lighting with three-primary-color laser

Abstract

Provided is a system achieving uniform lighting with a three-primary-color laser. The system comprises a green semiconductor laser, a red semiconductor laser, a blue semiconductor laser, a long wave cut-off filter, a short wave cut-off filter, a neutral density filter, a first microlens array, a second microlens array and a convergent lens, wherein the front ends of the three semiconductor lasers are provided with a first collimating lens, a second collimating lens and a third collimating lens; the long wave cut-off filter is located on an output light path of the green semiconductor laser, and forms an incline angle with the output light path of the green semiconductor laser; the short wave cut-off filter is located on the output light path of the green semiconductor laser, and forms an incline angle with the output light path of the green semiconductor laser; the neutral density filter is located on an output light path of the blue semiconductor laser; the first microlens array and the second microlens array are respectively located on the output light path of the green semiconductor laser in sequence and behind the short wave cut-off filter; the convergent lens is located behind the second microlens array, and on the output light path of the green semiconductor laser.

Description

technical field [0001] The invention relates to a laser lighting system, in particular to a system for realizing uniform lighting by three primary color lasers. The system destroys the coherence of the laser to a certain extent, and can realize laser white light with uniform illumination. Background technique [0002] Visible light communication technology has many advantages such as safety and energy saving, no need for spectrum certification, no electromagnetic interference, and large communication capacity. It has broad application prospects and is a research hotspot in the field of optical communication. In recent years, lasers have attracted great attention as light sources for visible light communication. Visible light communication, as the name suggests, transmits information while illuminating. However, due to the high brightness, strong directionality and serious interference of the laser beam, it is not only extremely ineffective but also harmful to human eyes to...

AI Technical Summary

Problems solved by technology

However, due to the high brightness, strong directionality and serious interference of the laser beam, it is not only very ineffective but also harmful to the human eye to use it directly for lighting.

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