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:
Feb. 27, 2001
Filed:
Mar. 27, 2000
Richard Snook, Tucson, AZ (US);
Other;
Abstract
A video Keratometer/Pachymeter comprising an array of illuminated points disposed in concentric circles around the optical axis of a television camera for definition of corneal surface contour by a method similar to the well know Placido, except that the isolated point ring format provides unambiguous back ray trace information to eliminate errors inherent in the prior art, in combination with a projected pattern of discrete points to elicit Tyndall images for definition of both anterior and posterior corneal surface by triangulation using multiple television cameras viewing the reflected and Tyndall images, substraction of a view of the eye with neither pattern superimposed as well as each pattern in sequence for isolation of the data containing points from the general clutter of background pictorial information.