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:
Jul. 28, 2015
Filed:
Mar. 20, 2014
Applicant:
Gigaphoton Inc., Oyama-shi, Tochigi, JP;
Inventors:
Assignee:
GIGAPHOTON, INC., Oyama, Tochigi, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01S 3/00 (2006.01); H01S 3/038 (2006.01); G02B 5/20 (2006.01); G03F 7/20 (2006.01);
U.S. Cl.
CPC ...
H01S 3/038 (2013.01); G02B 5/208 (2013.01); G03F 7/20 (2013.01);
Abstract
An optical device includes a plate-like optical element made of a calcium fluoride crystal, a holding member to sandwich and hold the optical element, a seal member provided between the holding member and one surface of the optical element in close contact therewith, and a cushioning member provided between the holding member and the other surface of the optical element in contact therewith. The cushioning member is made of one of a 304 stainless steel, a 303 stainless steel, a 316 stainless steel, a Hastelloy™ alloy, a carbon steel for machine construction S45C, and Inconel™.