Patent SG-11201810799U-A (SG)
Title: Method for inspecting an ophthalmic lens using optical coherence tomography
Inventor: TONN THOMAS
IPC: G01M11/02
Filed: 2017-07-18
Abstract: INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 25 January 2018 (25.01.2018) W I PO I PCT omit IIl °nolo III m onm Imo oimIE (10) International Publication Number WO 2018/015888 Al (51) International Patent Classification: G01M 11/02 (2006.01) (21) International Application Number: PCT/IB2017/054341 (22) International Filing Date: 18 July 2017 (18.07.2017) (25) Filing Language: English (26) Publication Language: English (30) Priority Data: 62/364,531 20 July 2016 (20.07.2016) US (71) Applicant: NOVARTIS AG [CH/CH]; Lichtstrasse 35, 4056 Basel (CH). (72) Inventor: TONN, Thomas; c/o CIBA Vision Gmbh, Post- fach 4, D-63868 Grosswallstadt (DE). (81) Designated States (unless otherwise indicated, for every kind of national protection available): AE, AG, AL, AM, 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, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, 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, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. (84) Designated States (unless otherwise indicated, for every kind of regional protection available): ARIPO (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, 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 4.17(ii)) as to the applicant's entitlement to claim the priority of the earlier application (Rule 4.17(iii)) Published: with international search report (Art. 21(3)) (54) Title: METHOD FOR INSPECTING AN OPHTHALMIC LENS USING OPTICAL COHERENCE TOMOGRAPHY W O 20 18/0 15 888 Al (57) : There is described a method for inspecting an oph- thalmic lens, in particular a contact lens, using Optical Coherence To- mography. The method according to the invention comprises illumi- nating a sample volume including the ophthalmic lens with a sample light beam which is provided from a light source having a power of at least 2 mW at a wavelength of 1040 nm to 1080 nm and which does not exceed 5 W. In carrying out the method according to the invention an ophthalmic lens is inspected which has been manufactured such that it comprises scattering centers embedded in and/or on an anteri- or surface and in and/or on a posterior surface thereof, respectively, and/or distributed throughout a bulk material being delimited by the anterior surface and the posterior surface of the ophthalmic lens. An interference pattern resulting from a superposition of back-scattered light from the sample volume including the ophthalmic lens and a reference light beam provided from the light source may then be an- alyzed and evaluated. Fig. 1