High color development laser illumination system for non-excited phosphors

Abstract

The invention discloses a high color development laser illumination system for non-excited phosphors. The high color development laser illumination system for the non-excited phosphors comprises a redsemiconductor laser coupled and conducted by optical fibers (including fused tapered beam or bundled beam), a green semiconductor laser coupled and conducted by optical fibers, a blue semiconductor laser coupled and conducted by optical fibers, a beam optical fiber and an integrator rod. The red, green and blue semiconductor lasers can be fused and tapered to form a beam, or can be bundled and seamed into the seam optical fiber to obtain white light output, and then is subjected to dodging and shaping by the integrator rod to obtain high-power and high-color white light for the laser illumination system. The method solves the problem of low efficiency of a blue light excitation phosphor method. Under the condition of high-power laser, the efficiency of the phosphor does not decrease due to the thermal quenching effect, so that the efficiency and stability of the illumination system are improved.

Description

technical field [0001] The invention relates to a high-color-rendering laser lighting system for non-exciting phosphors. Background technique [0002] With the development of semiconductor lasers with small size, light weight, good reliability and long service life, and laser lighting has the characteristics of good directivity, long range, and easy control, semiconductor laser lighting is more and more used in projection lighting, automotive It is widely used in lighting and special lighting fields. Existing laser lighting systems generally use blue semiconductor laser light sources to excite phosphors to obtain white light for lighting, but this method has some disadvantages: the quantum efficiency of phosphors will lose part of the energy; at the same time, the excited light of phosphors diverges 360 degrees, Many systems can only use 50% of the excited light; the remaining working light will further reduce the efficiency in the process of converging the divergence angle...

AI Technical Summary

Problems solved by technology

Existing laser lighting systems generally use blue semiconductor laser light sources to excite phosphors to obtain white light for lighting, but this method has some disadvantages: the quantum efficiency of phosphors will lose part of the energy; at the same time, the excited light of phosphors diverges 360 degrees, Many systems can only use 50% of the excited light; the remaining working light will further reduce the efficiency during the convergence of the divergence angle due to the excessive divergence angle

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