SG11201902325YA - Contact lens inspection method and system - Google Patents

Abstract

INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property 111111101111 0 1110101011111 011101 0 01111H11111111111111111111111111111111111111 Organization International Bureau (10) International Publication Number (43) International Publication Date .....0 WO 2018/078602 Al 03 May 2018 (03.05.2018) W I P0 I P C T (51) International Patent Classification: GO1M 11/02 (2006.01) GO1M 11/08 (2006.01) (21) International Application Number: PCT/IB2017/056739 (22) International Filing Date: 30 October 2017 (30.10.2017) (25) Filing Language: English (26) Publication Language: English (30) Priority Data: 62/414,900 31 October 2016 (31.10.2016) US (71) Applicant: NOVARTIS AG [CH/CH]; Lichtstrasse 35, 4056 Basel (CH). (72) Inventors: UNTERKOFLER, Sarah; c/o CIBA Vision GmbH, Postfach 4, 63868 Grosswallstadt (DE). FECHN- ER, Susanne; c/o CIBA Vision GmbH, Postfach 4, 63868 (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). Grosswallstadt (DE). HEIFT, Marcus; c/o CIBA Vision _ GmbH, Postfach 4, 63868 Grosswallstadt (DE). SCHWAB, Matthias; c/o CIBA Vision GmbH, Postfach 4, 63868 _ = Grosswallstadt (DE). = Title: CONTACT LENS INSPECTION METHOD AND SYSTEM imaging a soft contact lens having a said soft contact lens (1 ), the method image of at least a part of the contact lens lens (1) extending from the lens edge edge geometry corresponding to the convex a parameter defining the cross-sectional edge edge geometry of the contact lens contact lens to determine whether said ), comprising surrounding the contact cross-sectional non-inverted = (54) = S = = = d = soft contact lens (1 and a lens edge (5) at least one sectional edge geometry of the cross-sectional image, selecting defining the geometry of a = = = = — Fig. la = _ = 1 . 0 1 (57) : A method for determining the inversion state of a --\", convex surface (2, 3) and a concave surface (3, 2), a lens center f'1 comprising using an optical coherence tomography system to obtain (1) comprising the lens edge (5), determining a cross-sectional pt (5) towards the lens center of the contact lens in the sectional image, C and concave surface boundaries of the contact lens (1) in the sectional ---- geometry of the contact lens (1 ) imaged and comparing the parameter 0 1-1 0 (1) with a predetermined parameter defining a cross-sectional edge cz contact lens (1) is inverted. ei C [Continued on next page] WO 2018/078602 Al MIDEDIMOMMIDIIMEIERIME11001101011MEMOIS Declarations under Rule 4.17: — as to applicant's entitlement to apply for and be granted a patent (Rule 4.17(H)) — as to the applicant's entitlement to claim the earlier application (Rule 4.17(iii)) priority of the Published: — with international search report (Art. 21(3))