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:
Sep. 17, 2019
Filed:
Feb. 09, 2017
Applicant:
Koito Manufacturing Co., Ltd., Tokyo, JP;
Inventors:
Noriko Sato, Shizuoka, JP;
Hiroyuki Ishida, Shizuoka, JP;
Assignee:
KOITO MANUFACTURING CO. LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F21S 41/00 (2018.01); F21S 41/32 (2018.01); F21S 41/33 (2018.01); F21S 41/36 (2018.01); F21S 41/43 (2018.01); F21S 41/147 (2018.01); F21S 41/365 (2018.01); F21S 41/663 (2018.01); B60Q 1/14 (2006.01); F21S 45/47 (2018.01);
U.S. Cl.
CPC ...
F21S 41/00 (2018.01); F21S 41/147 (2018.01); F21S 41/321 (2018.01); F21S 41/335 (2018.01); F21S 41/336 (2018.01); F21S 41/36 (2018.01); F21S 41/43 (2018.01); F21S 41/663 (2018.01); B60Q 1/1423 (2013.01); B60Q 2300/056 (2013.01); B60Q 2300/41 (2013.01); B60Q 2300/45 (2013.01); F21S 41/365 (2018.01); F21S 45/47 (2018.01);
Abstract
An ADB lamp unit of a vehicle headlamp includes a light source constituted by a plurality of semiconductor light-emitting elements that can be turned on/off individually, and a reflector having a reflective surface that is based on a paraboloid of revolution. The reflector is constituted by a perpendicularly split plurality of partial reflectors, with the reflective surface of each partial reflector being configured such that the horizontal spread of reflected light reflected by each partial reflectors is approximately equal in a predetermined projection plane.