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.

Date of Patent:
Nov. 30, 2021

Filed:

Aug. 05, 2019
Applicant:

Shimadzu Corporation, Kyoto, JP;

Inventor:

Naoki Wakabayashi, Kyoto, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01S 5/00 (2006.01); G02B 27/09 (2006.01); G02B 19/00 (2006.01); H01S 5/02251 (2021.01); H01S 5/02253 (2021.01);
U.S. Cl.
CPC ...
G02B 27/0966 (2013.01); G02B 19/0095 (2013.01); H01S 5/0071 (2013.01); H01S 5/02251 (2021.01); H01S 5/02253 (2021.01); G02B 27/09 (2013.01); H01S 5/005 (2013.01);
Abstract

A light source module includes: laser light sources; parallel light lenses that converts laser beams from the laser light sources to collimated laser beams; a demagnification optical system including that demagnifies the collimated laser beams; an optical fiber; and a condenser lens that converges and couples the laser beams demagnified by the demagnification optical system with the optical fiber; wherein an Abbe number of each of the parallel light lenses is set to a set value suppressing an output fluctuation from the optical fiber to a predetermined value or less, the set value determined based on: a transverse magnification defined by a focal length of a corresponding one of the parallel light lenses, a demagnification of the demagnification optical system, and a focal length of the condenser lens; and a corresponding one of wavelength shifts of the laser beams generated by the laser light source.


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