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:
Jun. 20, 2006
Filed:
Jul. 29, 2003
Junji Okada, Nakai-machi, JP;
Takehiro Niitsu, Nakai-machi, JP;
Tsutomu Hamada, Nakai-machi, JP;
Hidenori Yamada, Nakai-machi, JP;
Hiroshi Oikawa, Ebina, JP;
Junji Okada, Nakai-machi, JP;
Takehiro Niitsu, Nakai-machi, JP;
Tsutomu Hamada, Nakai-machi, JP;
Hidenori Yamada, Nakai-machi, JP;
Hiroshi Oikawa, Ebina, JP;
Fuji Xerox Co., Ltd., Tokyo, JP;
Abstract
An optical transmission device improved in optical coupling loss between light guides and optical elements and excelling in efficiency of light utilization is provided with light guides having light incidence/emission sections on plural stepped portions, a substrate that fixes the light guides, and light receiving elements and light emitting elements arranged on the substrate to match the light incidence/emission sections of the light guides. The light receiving elements and the light emitting elements are arranged on the substrate by use of optical connectors. Coefficients of linear expansion and the rates of dimensional variation due to water absorption (or alternatively due to water absorption rates) of the light guides and the substrate here are substantially equalized.