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:
Jul. 23, 2013
Filed:
Mar. 01, 2011
Shigekazu Yamagishi, Osaka, JP;
Hiroki Sugiyama, Osaka, JP;
Hiroshi Kitano, Hyogo, JP;
Yoshimasa Fushimi, Osaka, JP;
Hirokazu Sakaguchi, Osaka, JP;
Shigekazu Yamagishi, Osaka, JP;
Hiroki Sugiyama, Osaka, JP;
Hiroshi Kitano, Hyogo, JP;
Yoshimasa Fushimi, Osaka, JP;
Hirokazu Sakaguchi, Osaka, JP;
Panasonic Corporation, Kadoma-shi, JP;
Abstract
A lighting device configured to efficiently combine light beams emitted from a plurality of light sources, and to emit high output light while minimizing light loss, and a projection type display apparatus including the lighting device. The lighting device includes: a first light source and a second light source; two converging lenses for converging light beams emitted from the first and second light sources; two right-angle prisms for bending the light beams emitted from the first and second light sources; and a composite rod integrator for combining the light beams emitted from the first and second light sources. Between an exit surface of each right-angle prism and an incident surface of the composite rod integrator, a predetermined air gap is provided. The focal point of each converging lens is located on an incident surface of each right-angle prism.