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:
Jun. 10, 2003
Filed:
Aug. 07, 2002
Hitoshi Taniuchi, Tokyo, JP;
Hiroshi Iwasaki, Musashino, JP;
Stanley Electric Co., Ltd., Tokyo, JP;
Abstract
A vehicle headlight can include a light source, first and second ellipse group reflecting surfaces having a focus corresponding to the light source, a first parabolic group reflecting surface with a focus on a second focus of the second ellipse group reflecting surface, and a second parabolic group reflecting surface with a focus corresponding to the position of the light source. A movable shutter can be provided with a shutter part and a shade part. When the shade part is placed in the light flux of the first ellipse group reflecting surface, the shade part shades the light flux irradiating from the light source to the second parabolic group reflecting surface. On the other hand, when the shutter part is withdrawn from the light flux, the second parabolic group reflecting surface can receive light. The second ellipse group reflecting surface can reflect unused light from the first ellipse group reflecting surface toward the first parabolic group reflecting surface, and the first parabolic group reflecting surface can reflect the light in the irradiation direction. Thus, the low-beam distribution and the high-beam distribution can be improved in illumination. Furthermore, the light from the second parabolic group reflecting surface that is to be projected in the front direction can be added to the light reflected from the first ellipse group reflecting surface to improve the visibility in the front of the vehicle during high-beam distribution.