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:
Apr. 20, 2021
Filed:
Aug. 01, 2018
Ricoh Company, Ltd., Tokyo, JP;
Miho Higuchi, Kanagawa, JP;
Takuro Yasuda, Kanagawa, JP;
RICOH COMPANY, LTD., Tokyo, JP;
Abstract
An image display apparatus includes a light source emitting light; an optical scanner scanning a predetermined scanning zone with light from the light source to render a display image; a light intensity detector detecting a light intensity of light from the light source; a memory storing relationships between control currents provided to the light source and light intensities; and one or more processors controlling, on the basis of the control current and light intensity relationships stored in the memory, a control current to display the display image with light from the light source. When the optical scanner scans an area outside the display image, the one or more processors detect by the light intensity detector a light intensity of light for the scanning, and update on the basis of the light intensity the relationships stored in the memory.