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. 03, 2009
Filed:
Feb. 19, 2003
Mitsuyoshi Watanabe, Gifu-ken, JP;
Shoji Yamada, Aichi-ken, JP;
Mitsuyoshi Watanabe, Gifu-ken, JP;
Shoji Yamada, Aichi-ken, JP;
Brother Kogyo Kabushiki Kaisha, Nagoya-Shi, Aichi-Ken, JP;
Abstract
A retinal image scanning device is provided with at least one light source that emits a light beam, an intensity modulating system that modulates the intensity of the light beam emitted by said at least one light source in accordance with a video signal, an optical system that directs the light beam to a pupil of an observer, a scanning system that scans the light beam in a first direction and in a second direction which is substantially perpendicular to the first direction so that a two-dimensional image frame defined by the first and second directions is formed on a retinal of the observer, and a wavefront curvature modulating system that modulates a wavefront curvature of the light beam when the light beam is scanned in at least one of the first direction and the second direction.