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:
May. 06, 2025
Filed:
Nov. 19, 2020
Mitsubishi Electric Corporation, Tokyo, JP;
Akio Shirasaki, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
This optical module comprises: a semiconductor laser, an optical receiver, and a lens that are mounted on a carrier; an optical fiber; and a control circuit that controls the injection current of the laser such that the output current is kept constant. The lens and at least a part of the receiver are respectively fixed on the carrier with resin bonding materials that undergo thermosetting shrinkage. Initial positions in the laser, a tip end part of the optical fiber, the receiver, and the lens with respect to a reference as the rear surface of the carrier are determined such that change trends of the optical coupling efficiency characteristics between the laser and the receiver and between the laser and the optical fiber are to be the same with respect to an exposure time during which the optical module is exposed to environmental temperature higher than room temperature.