US 12,329,494 B2
Integrated optical system for spectral domain optical coherence tomography
Euan Allen, Bristol (GB); and Alasdair Price, Bristol (GB)
Assigned to Siloton Limited, West Bridgford (GB)
Appl. No. 18/252,859
Filed by SILOTON LIMITED, West Bridgford (GB)
PCT Filed Nov. 15, 2021, PCT No. PCT/GB2021/052954
§ 371(c)(1), (2) Date May 12, 2023,
PCT Pub. No. WO2022/101643, PCT Pub. Date May 19, 2022.
Claims priority of application No. 2017937 (GB), filed on Nov. 13, 2020.
Prior Publication US 2023/0414103 A1, Dec. 28, 2023
Int. Cl. A61B 5/05 (2021.01); A61B 5/00 (2006.01); A61B 3/10 (2006.01)
CPC A61B 5/0066 (2013.01) [A61B 3/102 (2013.01)] 17 Claims
OG exemplary drawing
 
16. A method suitable for performing an optical coherence tomography (OCT) scan, the method comprising:
providing a first signal provided by a light source;
providing a reference signal;
reflecting the first signal from a subject and coupling the reflected first signal to the reference signal to provide an interference signal;
adjusting a delay of one of the reference signal and the first signal by a variable delay to match an optical path length of the reference signal to an optical path length of the reflected first signal, wherein the step of adjusting comprises selecting between paths of different lengths, wherein the variable delay comprises a series of binary switches and a series of different selectable path elements, wherein the series of path elements comprise lengths of L up to 2N L, where N is a positive integer; and
analyzing the interference signal.