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:
Sep. 11, 2018
Filed:
Apr. 24, 2017
Canon Kabushiki Kaisha, Tokyo, JP;
Takehito Kawasumi, Saitama, JP;
Kazuhiro Inoko, Utsunomiya, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
An illumination apparatus includes an illumination optical system, a first light source unit that includes a first solid-state light source, a second light source unit that includes a second solid-state light source with a characteristic different from that of the first wavelength conversion element, an optical path combining system that includes a first light guide surface, and a second light guide surface. The first light guide surface viewed from an optical axis direction of the illumination optical system does not overlap the second light guide surface and is provided at a position different from that of the second light guide surface. The optical path combining system includes a first condenser optical system, and a second condenser optical system. A predetermined condition is satisfied.