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(11)

EP 2 218 034 A1

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(43) Date of publication: 18.08.2010 Bulletin 2010/33 (21) Application number: 07864101.6 (22) Date of filing: 08.11.2007

(51) International Patent Classification (IPC):  G06K 7/10(2006.01) H03G 3/32(2006.01) (86) International application number: PCT/US2007/084071 (87) International publication number: WO 2009/061319 (14.05.2009 Gazette 2009/20)

(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 (71) Applicants: Optoelectronics Co., Ltd. Warabi-shi, Saitama 335-0002 (JP) Opticon, Inc. Orangeburg, NY 10962 (US)	(72) Inventor: NAKAMURA, Norio Warabi Saitama Pref. 335-0002 (JP) (74) Representative: Waldren, Robin Michael  Marks & Clerk LLP 90 Long Acre London WC2E 9RA London WC2E 9RA (GB)