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. 06, 2015
Filed:
Feb. 04, 2013
Tadashi Nakamura, Tokyo, JP;
Toshiaki Tokita, Kanagawa, JP;
Yukio Itami, Kanagawa, JP;
Taku Amada, Kanagawa, JP;
Shingo Tachikawa, Tokyo, JP;
Tadashi Nakamura, Tokyo, JP;
Toshiaki Tokita, Kanagawa, JP;
Yukio Itami, Kanagawa, JP;
Taku Amada, Kanagawa, JP;
Shingo Tachikawa, Tokyo, JP;
Ricoh Company, Limited, Tokyo, JP;
Abstract
An optical scanning device includes: a light source device that emits five light beams corresponding to four basic colors and a single specific color; and five scanning optical systems corresponding the five light beams. One light beam in a first waveband among the light beams corresponding to the four basic colors enters one scanning optical system of the five scanning optical systems. The one scanning optical system includes a dichroic mirror that transmits a light beam in a second waveband different from the first waveband. An angle θb formed between a normal to the incidence plane of the dichroic mirror and orthogonal projection to an assumed plane orthogonal to the main scanning corresponding direction of the incident path of the light beam to the incidence plane of the dichroic mirror is set at an angle of 0° or more and an angle of 45° or less.