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:
May. 19, 2026
Filed:
Jun. 29, 2020
Applicant:
Hoya Corporation, Tokyo, JP;
Inventor:
Shuhei Azuma, Hung Yen Province, VN;
Assignee:
HOYA CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C03B 33/08 (2006.01); B23K 26/352 (2014.01); B23K 26/354 (2014.01); C03B 23/02 (2006.01); C03C 17/00 (2006.01); C03C 23/00 (2006.01); G11B 5/73 (2006.01); G11B 5/84 (2006.01); B23K 103/00 (2006.01);
U.S. Cl.
CPC ...
C03B 33/082 (2013.01); B23K 26/354 (2015.10); B23K 26/3576 (2018.08); C03B 23/02 (2013.01); C03C 17/002 (2013.01); C03C 23/0025 (2013.01); G11B 5/73921 (2019.05); G11B 5/8404 (2013.01); B23K 2103/54 (2018.08);
Abstract
When a laser beam is used to perform shape processing on an edge surface of a disk-shaped glass plate, in order to suppress strain (retardation values) in the main surface of the glass plate, the disk-shaped glass plate is floated above a base, and the edge surface of the glass plate is processed into a target shape by irradiating the edge surface with the laser beam while contactlessly heating the glass plate in a state where the glass plate is floated, and moving the laser beam relative to the edge surface in the circumferential direction of the disk-shaped glass plate.