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:
Nov. 06, 2012
Filed:
Aug. 18, 2010
Jun Sakuma, Kanagawa, JP;
Haruhiko Kusunose, Kanagawa, JP;
Jun Sakuma, Kanagawa, JP;
Haruhiko Kusunose, Kanagawa, JP;
Lasertec Corporation, Kanagawa, JP;
Abstract
The invention is directed to the provision of a wavelength conversion-type ultraviolet light source apparatus that can obtain a stable output. A light source apparatus according to one mode of the invention includes: a laser light sourcewhich produces fundamental light L; at least one nonlinear optical crystalwhich takes the fundamental light Lor a harmonic thereof as incident light and outputs wavelength-converted light L; and polarization adjusting meanswhich is placed in an optical path of the incident light and causes an output of the wavelength-converted light Lto change by changing its refractive index for a polarized component of the incident light. The polarization adjusting meanschanges the amount of change of the refractive index in accordance with an electrical signal output from a photodetector