(19)

(11)

EP 2 047 308 A2

(12)

(88) Date of publication A3: 18.12.2008 (43) Date of publication: 15.04.2009 Bulletin 2009/16 (21) Application number: 07813780.9 (22) Date of filing: 03.08.2007

(51) International Patent Classification (IPC):  G02B 6/00(2006.01) G02B 6/26(2006.01) G06F 3/042(2006.01) G02B 6/10(2006.01) G06F 3/041(2006.01) (86) International application number: PCT/US2007/075221 (87) International publication number: WO 2008/017077 (07.02.2008 Gazette 2008/06)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR Designated Extension States: AL BA HR MK RS (30) Priority: 03.08.2006 US 821325 P (71) Applicant: Perceptive Pixel, Inc. New York, NY 10011 (US)	(72) Inventor: HAN, Jefferson Y. Perceptive Pixel, Inc. New York, NY 10011 (US) (74) Representative: Tucker, Nigel P.  Boult Wade Tennant, Verulam Gardens, 70 Gray's Inn Road London WC1X 8BT London WC1X 8BT (GB)