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. 05, 2013
Filed:
Mar. 01, 2011
Shigekazu Yamagishi, Osaka, JP;
Hiroshi Kitano, Hyogo, JP;
Yoshimasa Fushimi, Osaka, JP;
Takaaki Tanaka, Osaka, JP;
Shigekazu Yamagishi, Osaka, JP;
Hiroshi Kitano, Hyogo, JP;
Yoshimasa Fushimi, Osaka, JP;
Takaaki Tanaka, Osaka, JP;
Panasonic Corporation, Kadoma-shi, JP;
Abstract
A lighting device is provided which efficiently achieves a high brightness and a high image quality by using a solid light source which has long service life and does not need mercury. The lighting device includes a first light source section, a second light source section, a second rod integrator for combining lights emitted from the first and second light source sections, and a first rod integrator for guiding the light from the first light source section, to the second rod integrator. On an incident surface of the second rod integrator, a first region on which the light emitted from the first light source section is incident and a second region on which the light emitted from the second light source section is incident do not overlap each other, and the surface area of the first region and the surface area of the second region are different from each other.