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:
Aug. 19, 2003
Filed:
Apr. 23, 2002
Michihiko Hayakawa, Shizuoka, JP;
Koito Manufacturing Co., Ltd., Tokyo, JP;
Abstract
A first auxiliary reflector is provided above the optical axis Ax between a reflector of a lamp unit and projection lens , and under the optical axis Ax, a second auxiliary reflector is formed. An auxiliary luminous distribution pattern is formed at center area of a high-beam luminous distribution pattern additionally by reflecting forward at the second auxiliary reflector after direct light directing to forward and obliquely upward from a light source is reflected downward at the first auxiliary reflector at the time of high-beam emission. Because of that, at the low-beam emission, an area close cut-off line at opposite lane side of the low-beam luminous distribution pattern does not brighten more than necessity, further, luminous intensity of a part of the area at the hot zone of the high-beam luminous distribution pattern is obtained enough.