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1. (WO1999008147) CONTACT LENS
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1999/008147    International Application No.:    PCT/GB1998/002379
Publication Date: 18.02.1999 International Filing Date: 07.08.1998
Chapter 2 Demand Filed:    01.03.1999    
G02C 7/04 (2006.01)
Applicants: VISTA OPTICS LIMITED [GB/GB]; Horsfield Way Bredbury Stockport Cheshire SK6 2RJ (GB) (AL, AM, AT, AU, AZ, BA, BB, BE, BF, BG, BJ, BR, BY, CA, CF, CG, CH, CI, CM, CN, CU, CY, CZ, DE, DK, EE, ES, FI, FR, GA, GB, GE, GH, GM, GN, GR, GW, HR, HU, ID, IE, IL, IS, IT, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MC, MD, MG, MK, ML, MN, MR, MW, MX, NE, NL, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, SN, SZ, TD, TG, TJ, TM, TR, TT, UA, UG, UZ, VN, YU, ZW only).
HOUGH, Denis, Anthony [GB/GB]; (GB) (For US Only)
Inventors: HOUGH, Denis, Anthony; (GB)
Agent: WALLACE, Sheila, Jane; Lloyd Wise Tregear & Co. Commonwealth House 1-19 New Oxford Street London WC1A 1LW (GB)
Priority Data:
9716793.6 07.08.1997 GB
Abstract: front page image
(EN)The invention provides a rigid contact lens which acts as a varifocal device when worn on a specified eye in which the varifocal functionality is obtained from the goemetry of the back surface of the lens. A process for the manufacture of such a rigid contact lens is also provided together with a process for shaping the back surface of such a rigid contact lens and a rigid contact lens blank having a back surface prepared by such a process.
(FR)L'invention concerne une lentille de contact rigide servant de dispositif à focale variable lorsqu'elle est portée sur un oeil spécifié, la fonction de focale variable étant obtenue de par la géométrie de la surface arrière de la lentille. L'invention concerne également un procédé de fabrication d'une telle lentille de contact rigide, ainsi qu'un procédé de mise en forme de sa surface arrière et une ébauche de lentille de contact rigide présentant une surface arrière préparée conformément audit procédé.
Designated States: AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, CA, CH, CN, CU, CZ, DE, DK, EE, ES, FI, GB, GE, GH, GM, HR, HU, ID, IL, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MD, MG, MK, MN, MW, MX, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, TJ, TM, TR, TT, UA, UG, US, UZ, VN, YU, ZW.
African Regional Intellectual Property Organization (GH, GM, KE, LS, MW, SD, SZ, UG, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GW, ML, MR, NE, SN, TD, TG).
Publication Language: English (EN)
Filing Language: English (EN)