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. 03, 2007
Filed:
Feb. 15, 2005
Fumihiro Tawa, Kawasaki, JP;
Shinya Hasegawa, Kawasaki, JP;
Fumihiro Tawa, Kawasaki, JP;
Shinya Hasegawa, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A light irradiation head of the present invention includes: a propagation body having a tapered two dimensional shape axially symmetrical to a predetermined symmetrical axis, and consisting of a first kind material that propagates electromagnetic fields of light; and a covering body covering the propagation body so as to surround the symmetrical axis, and consisting of a second kind material different from the first kind material. The propagation body further includes: a bottom edge of projecting shape or recessed shape which is present on the symmetrical axis and which is axially symmetrical to the symmetrical axis; a tip edge which is present on the symmetrical axis and which is narrow relative to the bottom edge; and a pair of reflective edges which are present on both sides of the symmetrical axis and whose interval is gradually reduced in the direction from the bottom edge side to the tip edge side.