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Light engines with dynamically controllable light distribution

專利號
US10785847B2
公開日期
2020-09-22
申請人
Lumileds LLC(US CA San Jose)
發(fā)明人
Frederic Stephane Diana; Yifeng Qiu; Michael Wasilko; Nazila Soleimani; Jeroen Den Breejen; Alan Andrew McReynolds; Gregory Guth
IPC分類
H05B47/105; F21S4/20; F21V29/70; F21V23/04
技術(shù)領(lǐng)域
light,fixture,guide,may,in,leds,be,led,pan,or
地域: CA CA San Jose

摘要

An apparatus is disclosed comprising: a light guide having an opening formed thereon; an illumination source at least partially disposed in the opening, the illumination source including a plurality of LEDs disposed on a flexible circuit that is wrapped around a base, which may be thermally conductive, the base having a central opening, and the flexible circuit including a plurality of legs, each leg including electrical wiring for independently operating a different one of the LEDs, each leg being wrapped around a bottom edge of the base, and into the central opening, to come above the illumination source and connect to a control board that is situated above the illumination source; and a heat-dissipating element disposed over the illumination source, the heat-dissipating element being thermally coupled to the base to dissipate heat generated by the LEDs that is supplied to the heat dissipating element via the base.

說明書

In some implementations, the controller 330 may receive user input selecting one of the plurality of presets 340 that are stored in the memory 328, through the wireless interface 332. Alternatively, the controller may receive input specifying a preset that the user wants to be used, through the interface 332. Thus, although in the present example the presets 340 are retrieved from a non-volatile memory located on the PCB 326, alternative implementations are possible in which a particular preset 340 is specified or selected by the user (e.g., on the user's smartphone) and received by the controller via the wireless interface 330. In the latter case, the preset 340 may be stored in volatile memory and deleted or discarded, eventually. The present disclosure is not limited to any specific method for storing, implementing, or selecting the presets. Additionally or alternatively, in some implementations, the PCB 326 may be coupled to an input device 324, such as a knob, keypad, or a touchscreen that can be used to select and/or specify a current preset for the light fixture.

權(quán)利要求

1
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