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. 21, 2017
Filed:
Apr. 17, 2013
Applicants:
Shinshu University, Nagano, JP;
Kowa Company, Ltd., Aichi, JP;
Kazuo Ichikawa, Aichi, JP;
Inventors:
Assignees:
Primary Examiner:
Int. Cl.
CPC ...
A61B 3/02 (2006.01); A61B 3/06 (2006.01); A61B 3/032 (2006.01); A61B 3/00 (2006.01);
U.S. Cl.
CPC ...
A61B 3/066 (2013.01); A61B 3/0041 (2013.01); A61B 3/032 (2013.01);
Abstract
[Problem] To be able to accurately measure color vision and color-viewing field for different colors. [Solution] The color-viewing function measuring means () pertaining to the present invention displays a plurality of chromatically colored targets (A, . . . ) (for example, Landolt rings) in an achromatic background (B), the brightness of the targets (A, . . . ) being set so as to be substantially equal to the brightness of the background (B). When vision or the viewing field is measured with this color-viewing function measuring means (), vision and viewing field can be accurately measured for different colors.