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. 22, 2026
Filed:
Feb. 09, 2023
Takashi Sasaki, Kanagawa, JP;
Yohei Takano, Kanagawa, JP;
Kazuhiro Fujita, Tokyo, JP;
Kasumi Nakamura, Kanagawa, JP;
Takashi Sasaki, Kanagawa, JP;
Yohei Takano, Kanagawa, JP;
Kazuhiro Fujita, Tokyo, JP;
Kasumi Nakamura, Kanagawa, JP;
RICOH COMPANY, LTD., Tokyo, JP;
Abstract
An illumination device includes: a first light source to emit a first light beam having a first intensity distribution in a first direction; a second light source to emit a second light beam having a second intensity distribution in a second direction different from the first direction; a light combiner to combine the first light beam and the second light beam; and a light homogenizer to homogenize the first intensity distribution and the second intensity distribution to generate a third light beam. The light combiner is a polygonal prism including: a reflection surface to generate a reflection light beam; and multiple transmission surfaces to generate a transmission light beam. The light homogenizer homogenizes the reflection light beam and the transmission light beam and emits the third light beam. The first light beam and the second light beam propagate in different optical paths in the light combiner.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile