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. 27, 2009
Filed:
Mar. 22, 2007
Hajime Kobayashi, Tokyo, JP;
Yayoi Eguro, Hachioji, JP;
Nobuyoshi Mori, Hachioji, JP;
Hiroyuki Hattori, Hachioji, JP;
Yoshiharu Masaki, Kodaira, JP;
Fumiaki Yoshida, Tama, JP;
Yuichi Atarashi, Hachioji, JP;
Kazuhiro Wada, Hachioji, JP;
Kazuhiko Ishikawa, Kofu, JP;
Hajime Kobayashi, Tokyo, JP;
Yayoi Eguro, Hachioji, JP;
Nobuyoshi Mori, Hachioji, JP;
Hiroyuki Hattori, Hachioji, JP;
Yoshiharu Masaki, Kodaira, JP;
Fumiaki Yoshida, Tama, JP;
Yuichi Atarashi, Hachioji, JP;
Kazuhiro Wada, Hachioji, JP;
Kazuhiko Ishikawa, Kofu, JP;
Konica Minolta Opto, Inc., Tokyo, JP;
Abstract
An optical element used in a bidirectional optical communication module used for bidirectional optical fiber communication by a wavelength multiplex system, comprising a diffraction grating of binary structure prepared by molding, wherein a taper is formed at a portion of the diffraction grating where light entering the diffraction grating is intercepted by a convex part of the binary structure of the diffraction grating.