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. 10, 1995
Filed:
Jul. 02, 1993
Naoki Takenaka, Neyagawa, JP;
Yasushi Matsui, Neyagawa, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A light-emitting or light-receiving assembly is disclosed wherein the optical axis of input or output light to or from an optical fiber may not be shifted or dislocated under various environmental conditions. An optical isolator 3 is fixed on a lens mount 7 carrying a lens 2 and a ferrule 5 holding the optical fiber 12 therein is fixed to a ferrule holder 6 and the lens mount 7. Then, the distance between the lens 2 and an end surface 4 of the optical fiber is predetermined with a mechanical machining accuracy. This is followed by center-to-center adjustment through the use of a unit holder 8 placed around the lens mount 7. Thereafter, the lens mount 7 is fixedly secured to the unit holder 8 which in turn is fixedly secured to the laser mount 9, through the use of the YAG welding technique. An assembly unit 100 containing a semiconductor laser 1, the lens 2, the optical isolator 3 and the ferrule 4 is mounted on a temperature controlling Peltier effect element 10 by solder welding.