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:
Mar. 17, 1998
Filed:
Jul. 26, 1996
Norimasa Yamamoto, Shizuoka, JP;
Masahiro Maeda, Shizuoka, JP;
Koito Manufacturing Co., Ltd., Tokyo, JP;
Abstract
A vehicle lamp includes a reflection mirror, a front lens, and a light source arranged between the reflection mirror and the front lens in such a manner that the central axis of the light source is perpendicular to the principal optical axis. The reflection mirror is composed of a reflection surface having a large number of reflection steps which are defined by portions of paraboloids of revolution and are disposed between adjacent ones of lines of intersection obtained between a group of the paraboloids of revolution having different focal distances and a fundamental reflection surface of the reflection surface. Each reflection step is arranged to be extended substantially in the vertical direction, and square lens steps are formed on the front lens. Due to the foregoing, an arrangement tendency with respect to a set of projected images of the light source formed by the reflection step is matched with a section of the lens step on the front lens.