Laser lighting assembly using hollow alumina microspheres and manufacturing method thereof

Abstract

The invention discloses a laser lighting assembly using hollow alumina microspheres and a manufacturing method thereof, and relates to the field of lighting. The laser lighting assembly is formed by mixing hollow alumina microspheres, low-melting-point glass powder, fluorescent powder and volatile organic matters, wherein the hollow alumina microspheres serve as a light scattering medium, the inner diameter of the hollow alumina microspheres is 50-500 nm, the outer diameter of the hollow alumina microspheres is 400 nm to 1 micron, and the melting point range of the low-melting-point glass powder is 500-650 DEG C. The method comprises the following steps: uniformly mixing hollow alumina microspheres, low-melting-point glass powder, fluorescent powder and volatile organic matters to prepareslurry; coating the surfaces of sapphires with the slurry, sintering at high temperature, cooling, and removing a sintered flaky substance containing the hollow alumina microspheres, the fluorescent powder and the low-melting-point glass from the surfaces of the sapphires for supporting, namely obtaining the laser lighting assembly using the hollow alumina microspheres.

Description

technical field [0001] The invention relates to the lighting field, in particular to a laser lighting assembly using hollow alumina microspheres and a manufacturing method thereof. Background technique [0002] In the field of lighting, we will continue to move forward with the progress of society as a whole. From the initial reliance on animal and vegetable oils and fossil fuels, to incandescent lamps and gas discharge lamps (fluorescent lamps), then in the 1990s, relatively energy-saving and efficient LED white light lighting became popular. Recently, as the cost of laser diodes has gradually decreased and their performance has stabilized, it has gradually become possible to use lasers as illumination sources. [0003] Laser lighting is divided into visible light laser lighting and infrared laser lighting. [0004] Visible light laser lighting is divided into the following two types according to the principle: blue light excites fluorescent substances to realize white li...

AI Technical Summary

Problems solved by technology

[0012] In short, at present, in all the disclosed technical solutions, the following problems cannot be solved: the fluorescent substance used in the components for realizing blue-ray laser illumination, the part responsible for emitting light also undertakes the function of breaking up (by making micropores) the blue-ray laser, Therefore, the problems of heat dissipation, heat conduction and laser spot uniformity cannot be balanced at the same time

That is to say, all the currently disclosed technical solutions are compromised technical solutions, which can only control the micropore density as much as possible, so that the heat dissipation and thermal conductivity of the fluorescent material are not reduced to an unacceptable level when the light spot is uniform. , but this is based on the premise of reducing the overall light efficiency of the laser lighting device

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