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:
May. 02, 2017
Filed:
May. 08, 2015
Canon Kabushiki Kaisha, Tokyo, JP;
Takehito Kawasumi, Saitama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
The illumination optical system includes a first optical system configured to shape a light flux from a light source such that a light flux cross-sectional shape of the light flux becomes close to a rectangular shape of an illumination surface, a second optical system having an optical axis tilted with respect to a normal to the illumination surface and configured to introduce the light flux from the first optical system to the illumination surface, and a light-transmissive element having an entrance surface and an exit surface respectively forming mutually different angles with respect to the optical axis of the second optical system in a plane including the optical axis of the second optical system and the normal to the illumination surface. The light-transmissive element is disposed between the first optical system and the illumination surface.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile