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. 11, 2025
Filed:
May. 20, 2020
Applicant:
Stanley Electric Co., Ltd., Tokyo, JP;
Inventor:
Keita Akiyama, Tokyo, JP;
Assignee:
STANLEY ELECTRIC CO., LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B 26/08 (2006.01); G02B 26/10 (2006.01); H02N 2/00 (2006.01); H02N 2/02 (2006.01);
U.S. Cl.
CPC ...
G02B 26/0858 (2013.01); H02N 2/028 (2013.01); H02N 2/22 (2013.01); G02B 26/105 (2013.01);
Abstract
A light deflector includes a mirror part, a pair of torsion bars, inside piezoelectric actuators, and a movable frame part. The crystal orientation in the axial direction of the torsion bars is set to <100>. In the joint edge portions of the torsion bars and the inside piezoelectric actuators, radius parts are oriented to <110> and each formed by a curved surface recessed inward. The amount of waviness about a roughness curve derived from the curved surface is set within 600 nm.