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:
Jun. 10, 2008
Filed:
Jan. 09, 2006
Applicant:
Katsuhiko Murakami, Tokyo, JP;
Inventor:
Katsuhiko Murakami, Tokyo, JP;
Assignee:
Nikon Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H05G 2/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A light source unit of EUV light is provided as a light source unit comprising a plasma light source for emitting EUV light, a collective mirror which has a reflecting surface of an ellipsoid of revolution and at a first focal point of which the plasma light source is located, and an auxiliary collective mirror which has a reflecting surface of a spherical surface and a spherical center of which is located as displaced from a position of the plasma light source.