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Dynamic dim-to-warm with color-tunable fixtures

專(zhuān)利號(hào)
US12156315B2
公開(kāi)日期
2024-11-26
申請(qǐng)人
Wangs Alliance Corporation（US NY Port Washington）
發(fā)明人
Jonathan Ian Hoffman; Dimauro Andrade Edwards; Michael Sabolcik; Suman Minnaganti
IPC分類(lèi)
H05B47/17; H05B45/10; H05B45/20; H05B47/155; H05B47/175
技術(shù)領(lǐng)域
leds,may,led,string,fixture,cct,driver,dim,include,dimming
地域： NY NY Port Washington

摘要

Apparatus, methods and systems for lighting may be provided. Apparatus may include a fixture. The fixture may include a first light-emitting diode (“LED”). The first LED may emit light of a first color. The fixture may include a second LED. The second LED may emit light of a second color. The apparatus may include a light driver circuit. The light driver circuit may operate the fixture in a tunable color mode. The light driver circuit may operate the fixture in a dim-to-warm mode. The light driver circuit may switch between the tunable color mode and the dim-to-warm mode. The light driver circuit may switch between the tunable color mode and the dim-to-warm mode in response to a signal corresponding to a user mode-selection.

說(shuō)明書(shū)

When the light source is set to scene S, the user may use dimmer switch to reduce the lighting power of the LEDs. The reduction may proceed in discrete steps. The reduction may be a continuous reduction. The controller may detect the reduction. The controller may determine a curve M2,1 that is constrained by scene S, PSLP2 and R1. For each reduced lighting power between scene S and PSLP2, The controller along with a power supply may control the fixture to provide light having a CCT corresponding to M2,1. Target X is the CCT partition set-point defined by R1. M2,1 may be flat between target X and OFF.

FIG. 8 shows illustrative lighting power-CCT scheme 800. CCT scheme 800 may include one or more features in common with lighting power-CCT-correlation scheme 700. The horizontal axis may represent a total lighting power LP for the high CCT LEDs and the low CCT LEDs included in the fixture. The vertical axis P may represent a partitioning of power between the high CCT LEDs and the low CCT LEDs. The partitioning may range, for example, from delivery of 100% of the lighting power to low CCT LEDs to delivery of 100% of the lighting power to high CCT LEDs. The partitioning may be linear over the range. The partitioning may be non-linear over the range.

CCT scheme 800 may include CCT partition curves Ni,j. i may indicate a preselected lighting power PSLPk such as PSLP3 or PSLP4. j may indicate a CCT partition R1 such as R4, R5 or R6. The CCT partition set-point selector may be used to select a PSLPk. The selector may be used to select an R1.

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