US 12,458,227 B2
Ophthalmic visualization using confocal MEMS scanning
Steven T. Charles, Memphis, TN (US)
Assigned to Alcon, Inc., Fribourg (CH)
Filed by Alcon Inc., Fribourg (CH)
Filed on Sep. 7, 2023, as Appl. No. 18/462,767.
Claims priority of provisional application 63/506,704, filed on Jun. 7, 2023.
Claims priority of provisional application 63/488,071, filed on Mar. 2, 2023.
Claims priority of provisional application 63/420,113, filed on Oct. 28, 2022.
Prior Publication US 2024/0138675 A1, May 2, 2024
Int. Cl. A61B 3/15 (2006.01)
CPC A61B 3/15 (2013.01) 20 Claims
OG exemplary drawing
 
1. A visualization system for dynamically visualizing an eye, comprising:
a laser module operable for outputting a primary laser beam along a beam axis;
a beam splitter positioned in the beam axis and configured to direct (i) a first beam portion of the primary laser beam along the beam axis, and (ii) a second beam portion of the primary laser beam along a detection axis, wherein the detection axis is orthogonal to the beam axis;
a microelectromechanical system (MEMS) scanner arranged on the beam axis and configured, in response to the first beam portion of the primary laser beam, to output a scanning laser toward the eye along a visualization path;
an avalanche photodiode (APD) detector configured to receive the second beam portion of the primary laser beam; and
a 4F correlator optical system having a spatial filter arranged along the visualization path.