EP 3289837 A4 20181121 - APPARATUS AND METHOD FOR AMBIENT LIGHT MEASUREMENT BY A SOLID STATE LIGHT BULB
Title (en)
APPARATUS AND METHOD FOR AMBIENT LIGHT MEASUREMENT BY A SOLID STATE LIGHT BULB
Title (de)
VORRICHTUNG UND VERFAHREN ZUR UMGEBUNGSLICHTMESSUNG DURCH EINE FESTSTOFFGLÜHBIRNE
Title (fr)
APPAREIL ET PROCÉDÉ DE MESURE DE LUMIÈRE AMBIANTE PAR UNE AMPOULE À SEMI-CONDUCTEURS
Publication
Application
Priority
- US 201514701886 A 20150501
- US 201662312595 P 20160324
- US 2016029125 W 20160425
Abstract (en)
[origin: WO2016178843A1] A method for a light bulb or fixture to emit light and measure ambient light. The method includes driving solid state light sources, such as LEDs, in the bulb with a cyclical signal to repeatedly turn them off and on, where the light sources are turned off and on at a rate sufficient for the bulb to appear on. The method also includes measuring ambient light via a light sensor in or on the bulb during at least some times when the light sources are off, and outputting a signal related to the measured ambient light. In some cases the light sensor saturates when the solid state light sources are active and measures the ambient light level when the solid state light sources are not active. The ambient light level signal can be used to control when the light bulb is on and an intensity of light output by the bulb.
IPC 8 full level
H05B 37/02 (2006.01); F21V 23/00 (2015.01); F21V 23/04 (2006.01); H05B 44/00 (2022.01)
CPC (source: EP US)
H05B 45/12 (2020.01 - EP US); H05B 45/3574 (2020.01 - EP US); H05B 47/11 (2020.01 - EP US); H05B 47/19 (2020.01 - EP US); H05B 47/1965 (2024.01 - EP); Y02B 20/40 (2013.01 - EP)
Citation (search report)
- [Y] US 2015109791 A1 20150423 - JOHNSTON RAYMOND P [US], et al
- [Y] US 2010171429 A1 20100708 - GARCIA RICHARD JEFF [US], et al
- See also references of WO 2016178843A1
Designated contracting state (EPC)
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
DOCDB simple family (publication)
WO 2016178843 A1 20161110; EP 3289837 A1 20180307; EP 3289837 A4 20181121
DOCDB simple family (application)
US 2016029125 W 20160425; EP 16789754 A 20160425