Invention Grant
- Patent Title: Method of increasing strength of glass substrate for optical filter and tempered-glass optical filter made thereby
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Application No.: US16726499Application Date: 2019-12-24
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Publication No.: US11643361B2Publication Date: 2023-05-09
- Inventor: Deok Young Park , Jae Young Hwang , Hak Chul Kim , Hack Seon Kim , Tea Joo Ha
- Applicant: UTI INC.
- Applicant Address: KR Chungcheongnam-do
- Assignee: UTI INC.
- Current Assignee: UTI INC.
- Current Assignee Address: KR Chungcheongnam-do
- Agency: Mendelsohn Dunleavy, P.C.
- Priority: KR 20180170281 2018.12.27
- Main IPC: C03C21/00
- IPC: C03C21/00 ; G02B5/28 ; C03C17/34
Abstract:
The present invention provides a method of increasing the strength of a glass substrate for optical filters and a tempered-glass optical filter using a tempered glass substrate manufactured using the same, in which the glass substrate for optical filters is subjected to chemical tempering so that a compressive stress (CS) and a depth of layer (DOL) of the glass substrate are adjusted to increase the bending strength thereof.
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