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:
Mar. 10, 2020
Filed:
Sep. 11, 2018
Uti, Inc., Chungcheongnam-do, KR;
Deok Young Park, Gyeonggi-do, KR;
Jae Young Hwang, Gyeonggi-do, KR;
Hak Chul Kim, Chungcheongnam-do, KR;
Hyunho Kim, Seoul, KR;
Tea Joo Ha, Chungcheongnam-do, KR;
JongHwa Lee, Gyeonggi-do, KR;
UTI, Inc., , KR;
Abstract
Disclosed is an optical filter and a method of manufacturing the same, the optical filter including a tempered glass substrate and an optical filter formed on upper and lower surfaces of the tempered glass substrate and the method including: forming a sheet-cutting portion on a base glass substrate on a per-cell basis; tempering the base glass substrate such that upper and lower surfaces of the base glass substrate are tempered and a side portion thereof is tempered through the sheet-cutting portion as well; forming an optical filter layer on each of upper and lower surfaces of the base glass substrate; and dividing the base glass substrate into cells where each cell serves as a cell-based optical filter.