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:
Oct. 16, 2018
Filed:
Jan. 17, 2017
Stanley Electric Co., Ltd., Tokyo, JP;
Kiichi Matsuno, Tokyo, JP;
STANLEY ELECTRIC CO., LTD., Tokyo, JP;
Abstract
A headlight device provided enables horizontally displacing of the irradiation region for scanning of scanning light by a light deflector without problems. The light deflector includes: a mirror unit that reciprocally turns about first and second rotation axes at first and second frequencies. The first frequency is a natural-oscillation frequency of the mirror unit, and the second frequency is lower than the first frequency. Directions of the first and second rotation axes are set so that scanning directions of the reflect light due to the reciprocal turning of the mirror unit about the first and second rotation axes are in the directions of vertical axis and horizontal axis, respectively. The control unit controls reciprocal turning of the mirror unit about the second rotation axis based on driving voltage obtained by superimposing offset voltage with basic driving voltage having an increasing and decreasing waveform.