Device and method for controlled-spectrum lighting

(19)

(11)

EP 1 067 825 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	12.06.2002 Bulletin 2002/24

(43)	Date of publication A2:
	10.01.2001 Bulletin 2001/02

(21)	Application number: 00830455.2

(22)	Date of filing: 28.06.2000

(51)	International Patent Classification (IPC)⁷: H05B 37/02, H05B 41/36

(84)	Designated Contracting States:
	AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
	Designated Extension States:
	AL LT LV MK RO SI

(30)

Priority:

08.07.1999 IT FI990158

(71)	Applicant: TARGETTI SANKEY S.p.A.
	I-50145 Firenze (IT)

(72)	Inventors:
	Masotti, Leonardo 50019 Sesto Fiorentino, Firenze (IT) Calzolai, Marco 50010 Fiesole, Firenze (IT) Biagi, Elena 50017 S. Piero a Ponti, Firenze (IT) Donnini, Andrea 50127 Firenze (IT)

(74)	Representative: Mannucci, Michele et al
	Ufficio Tecnico Ing.A. Mannucci, Via della Scala 4 50123 Firenze 50123 Firenze (IT)

(54)	Device and method for controlled-spectrum lighting

(57) The lighting device comprises:

a plurality of light sources with varied light-emission spectra;
photodetection means which determine at least one characteristic of the ambient spectrum;
feedback means which compare said at least one characteristic of the ambient spectrum with a corresponding characteristic of a preconfigured spectrum and modify the emission of at least one of said sources so as to minimize the difference between the characteristic of the ambient spectrum detected and the characteristic of the preconfigured spectrum.