Ledvance Gmbh

Janet Milliez

Anil Jeswani

Valeriy Zolotykh

Renaud Richard

Ahmed Eissa

Arunava Dutta

Jason J Li

Ravidasa Hegde

A luminaire that includes a housing having a downlight geometry and containing a light engine including light emitting diodes (LEDs), in which the light engine is positioned to emit light through a light emission end of the housing. The housing contains driver electronics for controlling power received by the luminaire for powering the light engine. An access opening on a back surface of the housing exposes the driver electronics. A junction box supporting at least a portion of a wireless control module. The junction box having an electrical pathway opening is engaged to the back surface of the housing. The wireless control module is contained in the knockout of the junction box. Electrical communication between the wireless control module and the driver circuit is across a physical electrically conductive pathway that extends through the electrical pathway opening of the junction box.

Internet of things adaptable downlight

A light emitting element control circuit and power supply for a solid state lamp includes an electrical control circuit controller which enables the operation of a solid state lamp in three distinct modes, which allows the user significant flexibility in operation of the lamp. It enables the user to operate the lamp with a fixed emission spectrum but with intensity control (Mode I); or with discrete settings of blue only or red only or a fixed ratio of the two (Mode II); or an on-demand ratio of blue to red emission whereby the user can operate the lamp with any arbitrary ratio of blue to red for example to meet different spectral requirements of, for example, different phases of plant growth (Mode III).

Method of control of power supply for solid-state lamp

A solid-state horticultural lamp is disclosed. The lamp emits a spectrum of light including a first local emission peak between 400-500 nm and a first spectral power distribution (SPD) intensity and a second local emission peak between 500-600 nm and a second SPD intensity, wherein the second SPD intensity normalized to the first SPD intensity is between 0.15-0.35. The spectrum further includes a third local emission peak between 600-700 nm and a third SPD intensity, wherein the third SPD intensity normalized to the first spectral power distribution intensity is between 2.4-2.8. In some cases, a photosynthetic photon flux (PPF) of the light between 600-700 nm is between 3.5-4.5 times a PPF of the light between 400-500 nm, and a PPF of the light between 600-700 nm is between 3.8-4.2 times a PPF of the light between 400-500 nm.

Solid-state horticultural lamp

Growing community of inventors

Cambridge, MA, United States of America

Janet Milliez