US 12,232,810 B2
Scan pattern and signal processing for optical coherence tomography
Ryo Kubota, Seattle, WA (US); Stephan Wyder, Bern (CH); Philip M. Buscemi, Mount Pleasant, SC (US); Matthias Pfister, Liebefeld-Bern (CH); and Alexander Holzer, Bern (CH)
Assigned to ACUCELA INC., Seattle, WA (US)
Filed by ACUCELA INC., Seattle, WA (US)
Filed on May 15, 2023, as Appl. No. 18/317,549.
Application 18/317,549 is a continuation of application No. 17/662,582, filed on May 9, 2022, granted, now 11,684,254.
Application 17/662,582 is a continuation of application No. 17/248,870, filed on Feb. 11, 2021, granted, now 11,369,266, issued on Jun. 28, 2022.
Application 17/248,870 is a continuation of application No. 16/947,728, filed on Aug. 13, 2020, granted, now 10,959,613, issued on Mar. 30, 2021.
Claims priority of provisional application 62/706,193, filed on Aug. 4, 2020.
Prior Publication US 2023/0363640 A1, Nov. 16, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. A61B 3/10 (2006.01); A61B 3/12 (2006.01); G01B 9/02004 (2022.01); G01B 9/02091 (2022.01)
CPC A61B 3/102 (2013.01) [A61B 3/1225 (2013.01); G01B 9/02004 (2013.01); G01B 9/02091 (2013.01)] 10 Claims
OG exemplary drawing
 
1. An optical coherence tomography (OCT) system to measure a tissue layer of an eye, comprising:
an OCT interferometer comprising a light source to generate a measurement beam, a scanner for moving the measurement beam on the tissue layer in a scan pattern, a plurality of optical elements, and a detector; and
a processor operatively coupled to the scanner and configured to execute instructions to cause the scanner to move the measurement beam on the tissue layer in the scan pattern, wherein the scan pattern comprises a plurality of lobes;
wherein the scanner comprises a mirror configured to pivot about a first pivot axis and a second pivot axis transverse to the first pivot axis to move the measurement beam along the scan pattern;
wherein the scanner comprises a first resonance frequency for rotation of the mirror about the first pivot axis and a second resonance frequency for rotation of the mirror about the second pivot axis, the first resonance frequency different from the second resonance frequency by at least about 25%.