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1. WO2011010272 - DIMMING OF LIGHTING SYSTEM

Publication Number WO/2011/010272
Publication Date 27.01.2011
International Application No. PCT/IB2010/053273
International Filing Date 19.07.2010
IPC
H05B 37/02 2006.01
HELECTRICITY
05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
37Circuit arrangements for electric light sources in general
02Controlling
H05B 33/08 2006.01
HELECTRICITY
05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
33Electroluminescent light sources
08Circuit arrangements for operating electroluminescent light sources
CPC
H05B 45/10
HELECTRICITY
05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
45Circuit arrangements for operating light emitting diodes [LED]
10Controlling the intensity of the light
H05B 47/11
HELECTRICITY
05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
47Circuit arrangements for operating light sources in general, i.e. where the type of the light source is not relevant
10Controlling the light source
105in response to determined parameters
11by determining the brightness or colour temperature of ambient light
Y02B 20/40
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
20Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
40Control techniques providing energy savings, e.g. smart controller or presence detection
Applicants
  • KONINKLIJKE PHILIPS ELECTRONICS N.V. [NL]/[NL] (AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BE, BF, BG, BH, BJ, BR, BW, BY, BZ, CA, CF, CG, CH, CI, CL, CM, CN, CO, CR, CU, CY, CZ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, FR, GA, GB, GD, GE, GH, GM, GN, GQ, GR, GT, GW, HN, HR, HU, ID, IE, IL, IN, IS, IT, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LV, LY, MA, MC, MD, ME, MG, MK, ML, MN, MR, MT, MW, MX, MY, MZ, NA, NE, NG, NI, NL, NO, NZ, OM, PE, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SI, SK, SL, SM, SN, ST, SV, SY, SZ, TD, TG, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, UZ, VC, VN, ZA, ZM, ZW)
  • PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH [DE]/[DE] (DE)
  • BOEKE, Ulrich [DE]/[DE] (UsOnly)
Inventors
  • BOEKE, Ulrich
Agents
  • BEKKERS, Joost, J., J.
Priority Data
09165940.921.07.2009EP
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) DIMMING OF LIGHTING SYSTEM
(FR) GRADATION D'UN SYSTÈME D'ÉCLAIRAGE
Abstract
(EN)
A lighting system comprises a plurality of lighting units (1, 4) each configured to light a target area. A central dimming element having an adjustable conductance is provided. Each lighting unit comprises at least one light source (101, 201), a controllable light source driver (2, 5) coupled to the light source (101, 201), and a light sensor (3, 6) configured to measure a light flux in the target area of the lighting unit (1, 4). The light source driver supplies power to the light source in accordance with an input control voltage generated by a current source. The light sensor is coupled to the current source, and has a variable conductance corresponding to the light flux. The lighting units (1, 4) can be dimmed in combination by coupling each light sensor (3, 6) in parallel to the dimming element (7) through a respective diode (9, 10, 13).
(FR)
L'invention concerne un système d'éclairage qui comprend une pluralité d'unités d'éclairage (1, 4) configurées chacune pour éclairer une zone cible. L'invention a pour objet un élément central de gradation présentant une conductance ajustable. Chaque unité d'éclairage comprend au moins une source lumineuse (101, 201), un circuit d'attaque de source lumineuse pouvant être commandé (2, 5), couplé à la source lumineuse (101, 201), et un capteur de lumière (3, 6) configuré pour mesurer un flux lumineux dans la zone cible de l'unité d'éclairage (1, 4). Le circuit d'attaque de source lumineuse fournit de l'énergie à la source lumineuse en fonction d'une tension de commande d'entrée générée par une source de courant. Le capteur de lumière est couplé à la source de courant et présente une conductance variable correspondant au flux lumineux. Les unités d'éclairage (1, 4) peuvent faire l'objet d'une gradation en association au moyen du couplage de chaque capteur de lumière (3, 6) en parallèle à l'élément de gradation (7) au travers d'une diode respective (9, 10, 13).
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