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:
Apr. 10, 1990
Filed:
Apr. 03, 1989
Applicant:
Inventor:
Naohi Nino, Shizuoka, JP;
Assignee:
Koito Seisakusho Co., Ltd., Shizuoka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F21V / ;
U.S. Cl.
CPC ...
362 61 ; 362297 ; 362346 ;
Abstract
A headlight device comprising a reflective mirror having a reflective zone consisting of a plurality of reflective elements, and a light source arranged along an axis of irradiation which extends in the fore and aft direction of the reflective mirror. The reflective elements constituting the reflective zone are formed to have parabola-ellipse composite surfaces. The composite surface is defined to have a parabola in the vertical section and an ellipse in the horizontal section.