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. 08, 2008
Filed:
Oct. 08, 2003
Atsushi Hatakeyama, Ibaraki, JP;
Atsushi Hatakeyama, Ibaraki, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
An illuminator comprising two light source sections (), a rod integrator (), and a relay lens system () for introducing a light flux emitted from the rod integrator (), wherein the rod integrator () is a columnar optical element having an incident end face (F) and an exit end face (B). One pair of opposite side faces out of four side faces are formed so that the planes face each other in parallel while the other pair of opposite side faces form a taper face where the planes face each other while inclining at a specified angle such that the opposite side faces recede from the incident end face (F) toward the exit end face (B). Lights from the two light source sections () are converged to the vicinity of the incident end face (F) of the rod integrator ().