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:
Jun. 25, 2013
Filed:
Feb. 12, 2010
Syunsuke Kimura, Hyogo, JP;
Daizaburo Matsuki, Osaka, JP;
Tomoko Iiyama, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
An illuminating lens includes a light entrance surface, a light exit surface, and a reversing surface. The light exit surface has a first light exit surface and a second light exit surface. The first light exit surface is recessed toward a point on the optical axis, and the second light exit surface extends outwardly from the periphery of the first light exit surface. The first light exit surface includes a transmissive region in the center thereof and a total reflection region on the peripheral side thereof. The reversing surface has a shape such that the light that has been emitted from the light source, totally reflected repeatedly at the light exit surface, and then reached the reversing surface is guided to the first light exit surface by total reflection.