Signify Holding B.v.

Philips Lighting Holding B.v.

James M Gaines

Bertrand Johan Edward Hontele

Chuan Yuan

Donald Bouton Ellingham, Jr

H Andrew Mayo

Kai Han

Yuefeng Zhang

A horticultural lighting device for sustaining indoor plant growth, wherein said horticultural lighting device comprises lighting unit arranged for providing illumination in accordance with one of a plurality of modi, wherein, for each modus, said lighting unit is arranged for differentiating in different growth stages of a plant by illuminating in different electromagnetic spectrums, a power unit arranged for receiving an Alternating Current, AC, mains supply voltage and for providing power to said lighting unit, and a control unit arranged for detecting interruptions in said received AC mains supply voltage and for cycling through said plurality of modi for said lighting unit triggered by detected interruptions.

Horticultural lighting device for sustaining indoor plant growth as well as corresponding horticultural lighting system and method

A device suppresses flicker and improves compatibility of a lamp including at least one solid state light source, the lamp being operably connected to a control circuit, such as a dimmer circuit. The device includes a connector enabling connection of the solid state light source to a lamp socket configured to receive an incandescent light source, and an adapter circuit connected in parallel with the at least one solid state light source when the solid state light source is connected to the socket via the connector. The adapter circuit provides a resistive path for current to pass through the lamp, during all or part of the AC mains cycle.

Device for improving compatibility of solid state light sources with phase-cut dimmers

Growing community of inventors

Lexington, MA, United States of America

James M Gaines