Ophthalmic range finding

US9521949B2 · kind B2 · utility

Assignee

• AMO Development, LLC · US

Inventors

• Zsolt Bor · Oettingen, DE
• John Michael Tamkin · San Marino, US
• Peter Patrick De Guzman · Los Angeles, US
• Mikhail Levin · Santa Ana, US
• Anthony W. Dennison · Irvine, US
• Michael Campos · San Fernando, US
• Hong Fu · Pleasanton, US

Key dates

• Filing date: Mar 13, 2013
• Grant date: Dec 20, 2016
• Expiry date: Oct 22, 2035

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61F2009/00889
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

Systems and methods for analyzing the anatomy of a patient's eye with circular or rotated polarized laser beams, or with laser beams of different wavelengths are disclosed. One system includes a polarization beam-splitter and a quarter-wave plate, wherein the quarter-wave plate is configured to circularly rotate a laser beam received from a laser that is transmitted and passes through the polarization beam-splitter, and to transform a circularly rotated back-reflected beam to a linearly polarized laser beam that is perpendicular to the beam that was transmitted through the polarization beam-splitter. Substantially all of the back-reflected beam is directed to a photo-detector for analysis. A Faraday rotator subsystem may be substituted for a polarization beam-splitter. An optical system including a laser that generates a laser beam of a first wavelength for therapeutic treatment, and another laser that generates a laser beam of a second wavelength for measurement is also disclosed.