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:
Jan. 13, 2015
Filed:
Oct. 18, 2012
Applicant:
Bausch & Lomb Incorporated, Rochester, NY (US);
Inventors:
Ming Lai, Dublin, CA (US);
Ian G. Cox, Honeoye Falls, NY (US);
Paul D. Ludington, Brockport, NY (US);
Assignee:
Bausch & Lomb Incorporated, Rochester, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61B 3/00 (2006.01); A61B 3/08 (2006.01); A61B 3/032 (2006.01); A61B 3/09 (2006.01); A61B 3/103 (2006.01);
U.S. Cl.
CPC ...
A61B 3/08 (2013.01); A61B 3/032 (2013.01); A61B 3/09 (2013.01); A61B 3/103 (2013.01);
Abstract
A device for measuring depth of field of an eye optical system that includes a lens Badal having positive optical power, a positioning apparatus adapted to maintain the eye optical system on the image side of the lens at a first focal plane of the lens and a multi-vergency target that provides a plurality of objects that are simultaneously viewable, through the lens, by the eye optical system.