US 11,890,053 B2
Miniaturized mobile, low cost optical coherence tomography system for home based ophthalmic applications
Lukas Scheibler, Telluride, CO (US); Matthias Pfister, Liebefeld-Bern (CH); Urban Schnell, Munchenbuchsee (CH); Stefan Troller, Sissach (CH); and Ryo Kubota, Seattle, WA (US)
Assigned to ACUCELA INC., Seattle, WA (US)
Filed by ACUCELA INC., Seattle, WA (US)
Filed on Mar. 3, 2023, as Appl. No. 18/177,993.
Application 18/177,993 is a continuation of application No. 17/248,850, filed on Feb. 10, 2021, granted, now 11,627,874.
Application 17/248,850 is a continuation of application No. 16/805,267, filed on Feb. 28, 2020, granted, now 10,952,607, issued on Mar. 23, 2021.
Application 16/805,267 is a continuation of application No. 15/996,329, filed on Jun. 1, 2018, granted, now 10,610,096, issued on Apr. 7, 2020.
Application 15/996,329 is a continuation of application No. PCT/US2017/067603, filed on Dec. 20, 2017.
Claims priority of provisional application 62/547,314, filed on Aug. 18, 2017.
Claims priority of provisional application 62/546,935, filed on Aug. 17, 2017.
Claims priority of provisional application 62/539,382, filed on Jul. 31, 2017.
Claims priority of provisional application 62/437,486, filed on Dec. 21, 2016.
Prior Publication US 2023/0210360 A1, Jul. 6, 2023
Int. Cl. A61B 3/10 (2006.01); A61B 3/00 (2006.01); A61B 3/12 (2006.01); A61B 5/00 (2006.01); G01B 9/02 (2022.01)
CPC A61B 3/102 (2013.01) [A61B 3/0008 (2013.01); A61B 3/0025 (2013.01); A61B 3/10 (2013.01); A61B 3/1005 (2013.01); A61B 3/1225 (2013.01); A61B 5/0013 (2013.01); G01B 9/02 (2013.01); A61B 2505/07 (2013.01); A61B 2560/0425 (2013.01); A61B 2560/0431 (2013.01); A61B 2560/0456 (2013.01); A61B 2576/00 (2013.01)] 22 Claims
OG exemplary drawing
 
1. An optical coherence tomography (OCT) system to measure a distance between tissue layers of an eye, the OCT system comprising:
a detector;
a light source comprising a vertical cavity surface emitting laser (VCSEL) configured to generate a light beam comprising a plurality of wavelengths;
a plurality of optical elements coupled to the light source to direct the light beam into the eye and generate an interference signal at the detector; and
circuitry coupled to the detector and the light source to determine the distance between tissue layers in response to the interference signal, wherein the circuitry is configured to vary an emission wavelength of the VCSEL over a range of wavelengths with a drive current from the circuitry and wherein the circuitry is configured to drive the VCSEL over a maximum rated current threshold for a portion of a waveform and below the maximum rated current threshold for another portion of the waveform to extend the range of wavelengths of the VCSEL;
wherein the OCT system is configured to measure a distance between tissue layers, the distance between tissue layers corresponding to a first layer at a first location and a second layer at a second location;
wherein the range of wavelengths from the VCSEL corresponds to an axial resolution.