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. 16, 2021
Filed:
Mar. 13, 2018
Applicants:
Makoto Inamoto, Ishikawa, JP;
Yoshinori Hayashi, Kanagawa, JP;
Hiroyuki Tanabe, Tokyo, JP;
Inventors:
Assignee:
Ricoh Company, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G09G 3/02 (2006.01); G02B 26/10 (2006.01); G02B 27/01 (2006.01);
U.S. Cl.
CPC ...
G09G 3/025 (2013.01); G02B 26/10 (2013.01); G02B 27/0101 (2013.01); G09G 2320/064 (2013.01);
Abstract
A HUD device comprising a display device for scanning with light emitted by a light source (e.g., an LD) an optical element array (e.g., a micro lens array) including multiple optical elements (e.g., micro lenses) to form an image and for projecting the light that has formed the image. The display device includes a control unitthat is capable of changing output power of the light In this case, it is possible to provide a display device that is capable of adjusting luminance of an image while controlling against luminance unevenness of the image from occurring.