ATBECHDEDKESFRGBGRITLILUNLSEMCPTIESILTLVFIROMKCYALTRBGCZEEHUPLSKBAHRISYU........JDIM360 (Ver 1.5 21 Nov 2005) - 1620000/01785667EUROPEAN PATENT APPLICATIONA320070530EP06123798.820061110enenenVI2005029720051111IT2007053020072220070516200720F21V 7/00 20060101AFI20070115BHEP F21V 7/16 20060101ALI20070115BHEP F21V 14/04 20060101ALI20070115BHEP deOptische Einheit mit einstellbaren LichtstrahlenOptical group with an adjustable light beamfrBloc optique avec un faisceau lumineux ajustable2Beghelli S.p.A.0247300100668Via Mozzeghine, 13/1540050 Monteveglio, BolognaITBeghelli, Gian Pietro Via Borgo 440050 Monteveglio (BO)ITZanardo, Giovanni09226681Barzanò & Zarnado Milano S.p.A. Via Borgonuovo 10I-20121 MilanoITATBEBGCHCYCZDEDKEEESFIFRGBGRHUIEISITLILTLULVMCNLPLPTROSESISKTRALBAHRMKYU20070530200722

An optical group with an adjustable light beam, comprising at least one lamp-holder device, at least two linear fluorescent lamps (10, 11) and a specular reflector (12); in the centre of the body (5) of the reflector (12) there are at least two curvilinear surfaces (6, 16-19), which, by varying their angular position, allow a variation in the form of the light emission of a lighting appliance, in relation to the various application requirements. Solutions such as those projected allow high efficiency levels of the lighting appliance to be maintained and obtained in particularly restricted volumes.