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:
Sep. 30, 2014
Filed:
Nov. 28, 2012
Akihiro Iwamatsu, Zama, JP;
Tsuyoshi Fujimoto, Isehara, JP;
Mitsuru Nakajima, Atsugi, JP;
Tokiko Inoue, Setagaya-ku, JP;
Chihiro Tanaka, Naka-gun, JP;
Akihiro Iwamatsu, Zama, JP;
Tsuyoshi Fujimoto, Isehara, JP;
Mitsuru Nakajima, Atsugi, JP;
Tokiko Inoue, Setagaya-ku, JP;
Chihiro Tanaka, Naka-gun, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
An optical radiation device includes a long light source unit in which light emitting elements are arranged in array, a long substrate on which the light source unit is mounted, a long optical guide to guide the light beams from the light emitting elements to a predetermined plane, and an optical collector to collect the light beams reflected by the predetermined plane. The length of an effective read area from a reading center of the optical collector to one end of the predetermined plane is different from that of an effective read area from the reading center to the other end thereof. The optical guide formed by injection molding includes a gate at one end in a length direction and a surface at the other end to exert total reflection, and is disposed so that the gate is positioned on the a same side as a shorter effective read area.