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:
Jan. 07, 2020
Filed:
Sep. 25, 2017
Koito Manufacturing Co., Ltd., Tokyo, JP;
Tomoyuki Ichikawa, Shizuoka, JP;
Masayasu Ito, Shizuoka, JP;
Naoki Tatara, Shizuoka, JP;
Satoshi Yamamura, Shizuoka, JP;
KOITO MANUFACTURING CO., LTD., Minato-ku, Tokyo, JP;
Abstract
A first light source illuminates a first region. A second light source is configured to provide lower luminance than that of the first light source. The second light source illuminates a second region that overlaps the first region, and that has a larger area than that of the first region. A lighting circuit drives the first light source and the second light source according to a common lighting instruction. The lighting circuit gradually turns on the first light source and the second light source with different gradual changing time periods in response to the lighting instruction.