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:
Jul. 15, 2014
Filed:
Nov. 16, 2012
Tokiko Inoue, Tokyo, JP;
Mitsuru Nakajima, Kanagawa, JP;
Tsuyoshi Fujimoto, Kanagawa, JP;
Akihiro Iwamatsu, Kanagawa, JP;
Chihiro Tanaka, Kanagawa, JP;
Tokiko Inoue, Tokyo, JP;
Mitsuru Nakajima, Kanagawa, JP;
Tsuyoshi Fujimoto, Kanagawa, JP;
Akihiro Iwamatsu, Kanagawa, JP;
Chihiro Tanaka, Kanagawa, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A light irradiator including multiple point light sources arranged in a straight line, a light-transmissive light guiding member provided in front of the point light sources in an emission direction of beams of light emitted from the point light sources, the light guiding member guiding the beams of light in a predetermined direction toward a surface to be irradiated; and two or more protrusions protruding toward the point light sources, provided on a light entering surface of the light guiding member and arranged in the same direction as the point light sources. The light guiding member and the point light sources are positioned such that a distance between the protrusions provided to the light guiding member and irradiation surfaces of the point light sources is equal at two positions.