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. 02, 2013
Filed:
Dec. 03, 2008
Takashi Ibi, Saitama, JP;
Sumio Uehara, Saitama, JP;
Kyouichi Maseki, Saitama, JP;
Yosuke Kano, Saitama, JP;
Toshitaka Higuchi, Tokyo, JP;
Takashi Ibi, Saitama, JP;
Sumio Uehara, Saitama, JP;
Kyouichi Maseki, Saitama, JP;
Yosuke Kano, Saitama, JP;
Toshitaka Higuchi, Tokyo, JP;
Iwasaki Electric Co., Ltd., Tokyo, JP;
Fujii Optical Co., Ltd., Tokyo, JP;
Abstract
A light utilization efficiency of a high-pressure discharge lamp is improved even in a case of reducing the size of a reflection mirror without using an auxiliary reflection mirror. In a lamp device where a portion of lights emitted from a discharge bulb to the periphery thereof in forward and backward directions for a predetermined range of angle is reflected at a concave reflection mirror and illuminated to a light collection area of a predetermined size formed forward of the lamp, a prism surface having an angle of refracting or deflecting at least a portion of lights emitted from the discharge bulb that is not reflected at the concave reflection mirror to the light collection area is formed to the outer peripheral surface of the discharge bulb.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile