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(11)

EP 2 834 890 A1

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(43) Date of publication: 11.02.2015 Bulletin 2015/07 (21) Application number: 13772122.1 (22) Date of filing: 05.04.2013

(51) International Patent Classification (IPC):  H01S 5/183(2006.01) (86) International application number: PCT/US2013/035485 (87) International publication number: WO 2013/152310 (10.10.2013 Gazette 2013/41)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME (30) Priority: 06.04.2012 US 201261621067 P 11.02.2013 US 201313764770 (71) Applicant: RealD Inc. Beverly Hills, CA 90210 (US)	(72) Inventors: VAN LEEUWEN, Robert Beverly Hills, CA 90210 (US) XU, Bing Beverly Hills, CA 90210 (US) WANG, Qing Beverly Hills, CA 90210 (US) GHOSH, Chuni Beverly Hills, CA 90210 (US) (74) Representative: Beck, Simon Antony et al Withers & Rogers LLP 4 More London Riverside London SE1 2AU London SE1 2AU (GB)