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:
Jan. 06, 2004
Filed:
Mar. 16, 2001
Applicant:
Inventor:
Ken-ichiro Shinoda, Utsunomiya, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B 2/772 ; G03B 2/742 ; G03B 2/728 ; G02B 5/30 ;
U.S. Cl.
CPC ...
G03B 2/772 ; G03B 2/742 ; G03B 2/728 ; G02B 5/30 ;
Abstract
An optical system includes an internal reflection type optical member for changing a direction of advancement of an approximately linearly polarized light on the basis of total reflection and a depolarizing member for dissolving linear polarization of light emitted from the optical member.
Shinoda, Ken-ichiro. (2004). Illumination optical system in exposure apparatus (U.S. Patent No. 6674514). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6674514
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