Patent CA-3086214-A1 (CA)
Inventor: HOLLAND GUY
IPC: G01B9/02
Filed: 2019-02-25
Abstract: (12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property 111 111 10111E11E101 0111 11111 0111110 101110E1E111E1111111 1 0111EE 11111011110E II Organization International Bureau (10) International Publication Number (43) International Publication Date WO 2019/166934 Al 06 September 2019 (06.09.2019) WIPO I PCT (51) International Patent Classification: QAISI, Muhammad K; c/o Alcon Research, Ltd., 20511 GO1B 9/02 (2006.01) A 61B 5/00 (2006.01) Lake Forest Drive, Lake Forest, CA 92630 (US). A 61B 3/10 (2006.01) (81) Designated States (unless otherwise indicated, for every (21) International Application Number: kind of national protection available): AE, AG, AL, AM, PCT/IB2019/051504 AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, (22) International Filing Date: DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, 25 February 2019 (25.02.2019) HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, (25) Filing Language: English KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, (26) Publication Language: English OM, PA PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, (30) Priority Data: SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, 62/637,194 01 March 2018 (01.03.2018) US TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. (71) Applicant: NOVARTIS AG [CH/CHI; Lichtstrasse 35, (84) Designated States (unless otherwise indicated, for every 4056 Basel (CH). kind of regional protection available): ARIPO (BW, GH, GM, KE, LR, LS, MW, MZ, NA RW, SD, SL, ST, SZ, TZ, (72) Inventors: HOLLAND, Guy; c/o Alcon Research, Ltd., UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, 20511 Lake Forest Drive, Lake Forest, CA 92630 (US). AL- TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FL FR, GB, GR, HR, HU, 1E, IS, IT, LT, LU, LV, = (54) Title: COMMON PATH WAVEGUIDES FOR STABLE OPTICAL COHERENCE TOMOGRAPHY IMAGING 120 100 OCT FIBER ASSEMBLY 102 7 106 SOURCE 103 116 REFERENCE 104 7 BEAM SPLITTER/ 117 115 COUPLER 108 DETECTOR SAMPLE 118 119 PROCESSOR 1 OCT 22 IMAGE FIG. 1 71. cr\ (57) Abstract: An OCT imaging system may include an OCT light source operable to emit an OCT light beam, and a beam splitter operable to split the OCT light beam into a sample beam, transferred to a sample arm waveguide, and a reference beam, transferred to a reference arm waveguide. The sample arm waveguide and the reference arm waveguide may be coupled together within a cladding, wherein the cladding improves a calibration of a generated OCT image by fixing axial movement of the sample arm and reference arm 01 waveguides relative to one another. By routing long reference and sample arm waveguide fibers together in the OCT system using a sheath/cladding, OCT image offset due to asymmetrical fiber stretching can be minimized or eliminated. C11I [Continued on next page] CA 03086214 2020-07-08 VVO 2019/166934 A1 I 11 111 IIIIIIII II 11111111111 11111111111 1111111111 NI 1E111 1 1111111E1111111 111101111 11 MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG). Declarations under Rule 4.17: ¨ as to applicant's entitlement to apply for and be granted a patent (Rule 4.1700) ¨ as to the applicant's entitlement to claim the priority of the earlier application (Rule 4.17(M)) Published: ¨ with international search report (Art. 21(3)) CA 03086214 2020-07-08