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. 28, 2021
Filed:
Sep. 18, 2019
Applicants:
Kohei Ushio, Kanagawa, JP;
Takashi Kubota, Tokyo, JP;
Inventors:
Kohei Ushio, Kanagawa, JP;
Takashi Kubota, Tokyo, JP;
Assignee:
RICOH COMPANY, LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N 7/18 (2006.01); H04N 5/232 (2006.01); G02B 7/00 (2021.01); G03B 17/17 (2021.01); G03B 21/28 (2006.01); G03B 37/04 (2021.01); H04N 9/31 (2006.01);
U.S. Cl.
CPC ...
H04N 5/23238 (2013.01); G02B 7/006 (2013.01); G03B 17/17 (2013.01); G03B 21/28 (2013.01); G03B 37/04 (2013.01); H04N 9/3194 (2013.01);
Abstract
An optical system includes an optical element configured to emit light emitted from a light source; and an optical modulation element configured to receive the light emitted from the optical element and emit first light rays in a first direction and second light rays in a second direction different from the first direction. The optical element has an interface that transmits one and reflects the other of: the first light rays to be directed to a projection target; and the second light rays and the light emitted from the light source.