Method of producing secondary lens with hollow nano structures for uniform illuminance

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United States of America Patent

PATENT NO 10711342
APP PUB NO 20190177833A1
SERIAL NO

15840550

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Abstract

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A method of producing a secondary lens with hollow nano structures comprises the following steps (a) forming a polycrystalline seed layer on the surface of a lens; (b) growing a plurality of nano-rod structures over the polycrystalline seed layer in a random arrangement; (c) removing the portion of the seed layer where the nano-rod structure does not grow so that the surface of the lens therebeneath is exposed to outside; (d) sputtering a ceramic material layer over the plurality of nano-rod structures and the exposed surface portion of the lens; (e) removing the plurality of nano-rod structures and leaving a ceramic material layer having a plurality of hollow nano-rod structures in a random arrangement. A layer with hollow nano structures is formed on the surface of a lens wherein the hollow nano structures have the effect of scattering light and can improve the uniform illuminance of a secondary lens.

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Patent Owner(s)

Patent OwnerAddress
NATIONAL CHUNG SHAN INSTITUTE OF SCIENCE AND TECHNOLOGYNO 481 CHIA AN SEC CHUNG CHENG RD LONGTAN DIST TAOYUAN CITY 325

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Huang, Shyh-Jer Taoyuan, TW 9 9
Kuo, Yang-Kuo Taoyuan, TW 16 8
Ruan, Jian-Long Taoyuan, TW 9 24

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