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:
Oct. 15, 2019
Filed:
Apr. 26, 2016
Qd Laser, Inc., Kawasaki-shi, JP;
The University of Tokyo, Tokyo, JP;
Yasuhiko Arakawa, Tokyo, JP;
Mitsuru Sugawara, Kawasaki, JP;
Makoto Suzuki, Kawasaki, JP;
Michio Arai, Kawasaki, JP;
QD LASER, INC., Kawasaki-shi, JP;
THE UNIVERSITY OF TOKYO, Tokyo, JP;
Abstract
An image projection device includes: one light source unit emitting an image light beam, which forms an image, of visible light and a checking light beam of visible light; an optical system projecting the image light beam emitted from emitted from the one light source unit onto a first surface region of an eye of a user to project the image light beam onto a retina of the user, and projecting the checking light beam emitted from the one light source unit onto a second surface region, which is distant from the first surface region, of the eye of the user; a light detector detecting a reflected light that is the checking light beam reflected by the eye of the user; and a controller controlling at least one of the one light source unit and the optical stem based on a detection result of the reflected light by the light detector.