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:
Jun. 20, 2017
Filed:
Mar. 08, 2013
The Arizona Board of Regents on Behalf of the University of Arizona, Tucson, AZ (US);
James T. Schwiegerling, Tucson, AZ (US);
Nasser N. Peyghambarian, Tucson, AZ (US);
Gholam A. Peyman, Sun City, AZ (US);
Nickolaos Savidis, Tucson, AZ (US);
The Arizona Board of Regents on Behalf of The University of Arizona, Tucson, AZ (US);
Abstract
A phoropter having a line of sight for a viewer to see through comprises a lens system in the line of sight, wherein a shape or focal length of at least one lens in the lens system is controllable by means of an electrical signal, electrical field or current. Wavefront sensors of the phoropter detect local tilts of light wavefronts emerging from the eye and generate output signals that are used for controlling the shape or focal length of the at least one lens. Holographic or diffractive elements are used to collect light scattered from an eye of the viewer and image the scattered light to the wavefront sensors. Preferably one or more of the holographic or diffractive elements are away from the line of sight of the viewer. To use the phoropter, light is passed to the lens system, and light scattered by the eye is collected by the holographic or diffractive elements and imaged onto the wavefront sensors.