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:
Jan. 01, 2013
Filed:
Mar. 24, 2010
Mitsunori Harada, Tokyo, JP;
Takashi Akutagawa, Tokyo, JP;
Mitsunori Harada, Tokyo, JP;
Takashi Akutagawa, Tokyo, JP;
Stanley Electric Co., Ltd., Tokyo, JP;
Abstract
A vehicle light and a road illumination device can include a semiconductor light emitting device capable of forming a luminance distribution where the light with a maximum value can be arranged at or near a light distribution cutoff line, thereby improving its light utilization efficiency. The vehicle light can include a semiconductor light emitting device including a semiconductor light emitting element and a wavelength conversion layer having a thickness-decreased portion that is formed substantially at a center line of the semiconductor light emitting element and extending to one end thereof so that the thickness is reduced from the center portion toward the one end. A projection optical system for forming a cutoff line can be configured to project a plurality of light source images each including an image portion corresponding to the thickness-decreased portion at its upper area, and to arrange the image portions in at least one of a horizontal direction and an oblique direction.