US Patent No. 10,694,601

MODULAR LIGHTING APPLICATION


Patent No. 10,694,601
Issue Date June 23, 2020
Title Modular Lighting Application
Inventorship Marc Saes, Son en Breugel (NL)
Tijs Versteegde, Eindhoven (NL)
Stephen Haight Lydecker, Snellville, GA (US)
Assignee EldoLAB Holding B.V., Son En Breugel (NL)

Claim of US Patent No. 10,694,601

1. A modular system comprising a first component comprising anLED driver and a second component comprising a light engine; the LED driver comprising:
a switched mode power converter configured to output a supply current; and
a first control unit configured to control a switch of the switched mode power converter, thereby controlling the supply current;
the light engine comprising:
an LED assembly configured to receive the supply current, the LED assembly comprising a plurality of LEDs or LED groups and one or more switches arranged in series or in parallel with one or more LEDs or LED groups of the plurality of LEDs of LED groups, and
a second control unit configured to control the one or more switches of the LED assembly, thereby controlling a supply of the supply current to the plurality of LEDs or LED groups of the LED assembly,
wherein the first control unit and the second control unit are configured to co-operate and control the supply current and the supply of the supply current to the LED assembly in accordance with a desired illumination characteristic,
wherein the first and second control units are configured to synchronize a switching operation of the switch of the switched mode power converter with a switching operation of the one or more switches of the light engine,
wherein the first control unit and the second control unit are configured to control the LED assembly to generate a desired illumination characteristic by controlling the switch and the one or more switches within a predetermined modulation time window,
wherein the first control unit is configured to:
receive, at an input terminal of the first control unit, an input signal representing the desired illumination characteristic;
determine, based on the desired illumination characteristic, a current amplitude modulation scheme, a duty cycle modulation scheme and a time-division scheme; and
provide an output signal representative of the time-division scheme to the second control unit,
wherein the first control unit is configured to apply the current amplitude modulation scheme and the duty cycle modulation scheme within the modulation time window, and
wherein the second control unit is configured to apply the time-division scheme within the modulation time window, in order to generate the desired illumination characteristic.