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. 05, 2005
Filed:
Feb. 28, 2003
Tatsuhiro Nakazawa, Osaka, JP;
Shigeo Kittaka, Osaka, JP;
Kazuaki Oya, Osaka, JP;
Keiji Tsunetomo, Osaka, JP;
Masatoshi Nara, Osaka, JP;
Tatsuhiro Nakazawa, Osaka, JP;
Shigeo Kittaka, Osaka, JP;
Kazuaki Oya, Osaka, JP;
Keiji Tsunetomo, Osaka, JP;
Masatoshi Nara, Osaka, JP;
Nippon Sheet Glass Co., Ltd., Osaka, JP;
Abstract
An optical element according to the invention uses a thin film-like two-dimensional photonic crystal having a structure of periodic repetition in two directions perpendicular to each other. When the two periodic directions are Y-axis and Z-axis directions, opposite surfaces of the photonic crystal structure perpendicular to the Z-axis direction and parallel to the Y-axis direction are used as a light input surface and a light output surface respectively. The direction of movement of light rays incident onto the light input surface is decided so that it is parallel to the YZ plane and inclined at a predetermined inclination angle to the Z-axis direction.