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. 26, 2023
Filed:
Feb. 25, 2020
Applicants:
Yuuki Satoh, Kanagawa, JP;
Kazuhiro Fujita, Tokyo, JP;
Inventors:
Yuuki Satoh, Kanagawa, JP;
Kazuhiro Fujita, Tokyo, JP;
Assignee:
RICOH COMPANY, LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G09G 5/00 (2006.01); G02B 27/01 (2006.01); G02B 27/00 (2006.01); G03B 21/28 (2006.01);
U.S. Cl.
CPC ...
G02B 27/0101 (2013.01); G02B 27/0012 (2013.01); G03B 21/28 (2013.01);
Abstract
A projector includes an image forming unit configured to emit image light that forms an image and an imaging optical system configured to form an image by reflecting the image light. S magnification power at a point of the imaging optical system where the image light is incident and optical-path length between the image forming unit and the imaging optical system is short is made higher than a magnification power at a point of the imaging optical system where the image light is incident and the optical-path length between the image forming unit and the imaging optical system is long.