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:
Oct. 04, 2005
Filed:
Jul. 02, 2003
Yasuyuki Amano, Shizuoka, JP;
Hiroya Koizumi, Shizuoka, JP;
Yasuyuki Amano, Shizuoka, JP;
Hiroya Koizumi, Shizuoka, JP;
Koito Manufacturing Co., Ltd., Tokyo, JP;
Abstract
Light from an LED light source, which is placed to be directed toward the front of a lamp, is incident on a translucent member, and the light that is transmitted through the translucent member is reflected by a reflector toward the front of the lamp. An internal reflection portion that internally reflects light which is incident on the translucent member at a small angle with respect to an optical axis of the LED light source, in a direction which is substantially perpendicular to the optical axis, and a refraction portion that refracts light which is incident at a large angle with respect to the optical axis, in a direction which is substantially perpendicular to the optical axis, are formed on the surface of the translucent member. The LED emitted light can be caused to be incident on a reflective surface of the reflector in the form of substantially parallel beams which are directed in a direction that is substantially perpendicular to the optical axis. The LED emitted light can be caused to be incident on the range extending even to the peripheral edge of the reflective surface, without increasing the depth of the reflector. The reflection due to the reflector can be easily controlled.