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. 06, 2023
Filed:
Aug. 31, 2020
Applicant:
National University Corporation Gunma University, Gunma, JP;
Inventor:
Hiromasa Oku, Gunma, JP;
Assignee:
National University Corporation Gunma University, Gunma, JP;
Primary Examiner:
Int. Cl.
CPC ...
G02B 30/50 (2020.01); H04N 13/388 (2018.01); H04N 13/365 (2018.01); H04N 13/398 (2018.01); G02F 1/29 (2006.01); G02F 1/33 (2006.01); G03B 21/00 (2006.01); G03B 21/20 (2006.01);
U.S. Cl.
CPC ...
G02B 30/50 (2020.01); G02F 1/294 (2021.01); G02F 1/33 (2013.01); G03B 21/008 (2013.01); G03B 21/2033 (2013.01); H04N 13/365 (2018.05); H04N 13/388 (2018.05); H04N 13/398 (2018.05);
Abstract
A volumetric display capable of high-speed image presentation includes a resonance-type liquid lens having a focal length that is periodically adjusted using resonance of a liquid. An image projector projects an image toward a viewpoint position of a user via the resonance-type liquid lens. Further, the image projector projects an image toward the viewpoint position within a shorter time period than one-tenth of a variation cycle of the focal length. The image projector includes an LED and a DMD, for example.