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:
Jun. 22, 2021
Filed:
Mar. 14, 2018
Hiroyuki Tanabe, Tokyo, JP;
Yumiko Kishi, Kanagawa, JP;
Makoto Inamoto, Ishikawa, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A display device includes a light source unit, a light deflector configured to deflect light from the light source unit, an optical element array configured to be two-dimensionally scanned in a main-scanning direction and in a sub-scanning direction with light via the light deflector, the optical element array having a plurality of optical elements, and a light projecting unit configured to project light received via the optical element array. In the display device, each of a beam spot diameter in the sub-scanning direction on the optical element array and an arrangement pitch of the optical elements in the sub-scanning direction on the optical element array is equal to or greater than a scanning line pitch on the optical element array.