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. 03, 2026
Filed:
Dec. 21, 2022
Ricoh Company, Ltd., Tokyo, JP;
Tomoyasu Hirasawa, Kanagawa, JP;
Toshinobu Matsuyama, Kanagawa, JP;
RICOH COMPANY, LTD., Tokyo, JP;
Abstract
An image projection apparatus includes a light source module including a light source to emit excitation light, a pair of phosphor wheels, a light mixing element, an optical system to guide the excitation light emitted from the light source to the pair of phosphor wheels, and combine a pair of fluorescent lights emitted from the pair of phosphor wheels and guide combined fluorescent light to the light mixing element, an optical casing hermetically sealing the optical system, a first cooling casing hermetically sealing one of the phosphor wheels and having a first airflow circulation path, and a second cooling casing hermetically sealing another one of the pair of phosphor wheels and having a second airflow circulation path, an optical modulation element to modulate the light emitted from the light mixing element, and a projection optical system to project the light modulated by the optical modulation element onto a display device.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile