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, 2007
Filed:
Nov. 09, 2004
Applicant:
Michio Kohno, Tochigi, JP;
Inventor:
Michio Kohno, Tochigi, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B 27/54 (2006.01); G03B 27/42 (2006.01); F21V 1/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
An illumination optical system for Koehler-illuminating a target surface with light from a light source includes a light integrator for forming a secondary light source, the light integrator including plural elements formed directly onto a substrate; a condenser for condensing the light from the light integrator; and a shield for shielding the light that goes straight in interfaces among the plural elements from an effective illumination area on the illuminated surface.