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:
Mar. 01, 2016
Filed:
Feb. 10, 2015
Tetsuya Fujioka, Kanagawa, JP;
Masamichi Yamada, Kanagawa, JP;
Yasutada Tsukioka, Kanagawa, JP;
Naoyuki Ishikawa, Kanagawa, JP;
Hideo Kanai, Tokyo, JP;
Tetsuya Fujioka, Kanagawa, JP;
Masamichi Yamada, Kanagawa, JP;
Yasutada Tsukioka, Kanagawa, JP;
Naoyuki Ishikawa, Kanagawa, JP;
Hideo Kanai, Tokyo, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
Provided is an image projection apparatus, such as a projector, including a light source; an image generating element such as a DMD that receives light from the light source and forms an image; an image generating unit that irradiates the image generating element with the light from the light source; a first optical system including multiple transmission refractive optical elements; a second optical system arranged on an optical path of outgoing light of the first optical system and including a reflection optical element; and a projection optical system that enlarges and projects an image conjugate to the image generated by the image generating element as a projected image. The light source, the image generating unit, and the first optical system are arranged side by side in series in a direction parallel with the projected image plane.