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:
Jul. 21, 1992
Filed:
Aug. 30, 1991
Yukio Wakimizu, Shizuoka, JP;
Saburo Watanabe, Shizuoka, JP;
Masami Handa, Shizuoka, JP;
Hirohiko Ohshio, Shizuoka, JP;
Koito Manufacturing Co., Ltd., Tokyo, JP;
Abstract
The vehicular headlamp of the projection type in which a projection unit is installed within a lamp body, the projection unit including an elliptic reflector, a discharge lamp as a light source disposed at a first focal position of the elliptic reflector, an ultraviolet-rays shield glove for covering the discharge lamp, and a projection lens disposed at a forward location of the elliptic reflector, the projection lens collimating and projecting forward the light reflected from the elliptic reflector. The headlamp is improved in that the ultraviolet-ray shield glove is a tubular member which is opened at the fore end and includes a inner lens, disposed between the discharge lamp and the projection lens, for intercepting the ultraviolet rays.