The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 14, 2020
Filed:
Dec. 13, 2017
National Chung Shan Institute of Science and Technology, Taoyuan, TW;
NATIONAL CHUNG SHAN INSTITUTE OF SCIENCE AND TECHNOLOGY, Taoyuan, TW;
Abstract
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.