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:
Jan. 18, 2011
Filed:
Jan. 18, 2007
Yusaku Shimaoka, Osaka, JP;
Atsushi Hatakeyama, Osaka, JP;
Yoshimasa Fushimi, Osaka, JP;
Hiroshi Miyai, Hyogo, JP;
Yusaku Shimaoka, Osaka, JP;
Atsushi Hatakeyama, Osaka, JP;
Yoshimasa Fushimi, Osaka, JP;
Hiroshi Miyai, Hyogo, JP;
Panasonic Corporation, Osaka, JP;
Abstract
An illumination apparatus includes a light source (), a first integrator () into which light from the light source () enters, and a second integrator () into which light exiting from the first integrator () enters. Accordingly, the aperture shape of the first integrator () can be optimally designed, so that the light utilization efficiency can be increased. Furthermore, even when the length of the first integrator () is reduced, a deficiency in the light uniformity due to the first integrator () is compensated for by the second integrator (), so that high uniformity can be secured at the surface to be illuminated.