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. 13, 2003
Filed:
Jul. 02, 2001
Tatsuo Hatta, Hyogo, JP;
Satoshi Tamura, Hyogo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
In a laser diode module of the invention, a coupling optical system is inclined in an xz plane with respect to an optical axis (z axis) of outgoing light of a laser diode. More specifically, a coupling angle &thgr;lens of a laser diode and a lens is adjusted and fixed with a precision of 0.1° while monitoring a light output. By the operation, the coupling angle &thgr;lens is adjusted to an angle at which a light output which can be emitted without causing a kink becomes the maximum. As a result, even when the wavelength of the outgoing light is fixed by using a fiber grating, light can be emitted without causing a kink. Thus, a laser diode module capable of sufficiently increasing the maximum value of a light output can be obtained.