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. 10, 2014
Filed:
Apr. 26, 2012
Masatoshi Ishida, Kanagawa, JP;
Masatoshi Ishida, Kanagawa, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A light guide for guiding light from multiple point sources arranged in a first direction (Y) on a light source board includes a supporting unit including multiple supporting pieces provided to the light source board, arranged at regular intervals in the first direction (Y), and a light guiding body continuous with the multiple supporting pieces and disposed downstream from the multiple point sources in a light emission direction (L). The light guiding body includes an incident surface, a light emission surface, multiple support ranges in which the supporting pieces are provided, and multiple light transmission ranges adjacent to the support ranges, respectively, in the first direction (Y), to cause the light to exit the guiding body partly, and the multiple support ranges and the multiple light transmission ranges have substantially the same length in a second direction (X) perpendicular to the first direction (Y).