摘要:
A luminaire arrangement (30) comprising a luminaire holder (10) and a luminaire module (20). The luminaire holder (10) is arranged to be attached to a ground plane (32) and comprises electrical circuitry connectors (12), grommet seals (14) provided on said electrical circuitry connectors (12), and a shield (18). The luminaire module (20) comprises a covering (24) and is arranged to be received in the luminaire holder (10). The shield (18) and the covering (24) are arranged to form a sealing arrangement between the luminaire holder (10) and the luminaire module (20), when the luminaire module (20) is received in the luminaire holder (10).
摘要:
The invention describes a lighting circuit (1) comprising a primary set (11, 13) of light-emitting diodes (110, 130) of a first color and a secondary set (12) of light-emitting diodes (120) of a further color; wherein a temperature-dependent reduction in light output of the primary set (11, 13) of light-emitting diodes (110, 130) is greater than a temperature-dependent reduction in light output of the secondary set (12) of light-emitting diodes (120); and a flux ratio fixing arrangement realized to maintain an essentially constant ratio between the light output of the primary set (11, 13) and the light output of the secondary set (12) during a temperature-dependent overall reduction in light output of the light-emitting diodes (110, 120, 130) of the lighting circuit (1). The invention also describes a lighting arrangement (4, 4′) for illuminating objects (40, 41) with light of a predefined color point, which lighting arrangement (4, 4′) comprises at least one such lighting circuit (1), wherein the light-emitting diode sets (11, 12, 13) of a lighting circuit (1) are chosen to emit, in combination, light of the predefined color point at an initial temperature, and wherein the flux ratio fixing arrangement of the lighting circuit (1) is realized to maintain that color point at a temperature higher that the initial temperature.
摘要:
The invention provides an interface (20) for converting a desired physiological plant response into control instructions for at least one lighting system (4,5) which has an adjustable lighting property, said interface (20) comprising: • a receiver for receiving a desired physiological plant response; • a processor functionally coupled to said receiver for converting said desired physiological plant response into said control instructions, and • a transmitter (7), functionally coupled to said processor for transmitting said control instructions to said at least one lighting system (4,5) wherein said desired physiological plant response is defined as a set point in a multi-dimensional horticulture action space.
摘要:
Method and apparatus for a LED lighting unit (200), including an inverter circuit (210) electrically coupled to a LED module (220) having a pair of antiparallel LED groupings. The inverter circuit (210) provides for color and/or dimming control of the LED module (220). A method of adjusting color and/or dimming of a LED module includes the step of cycling between a plurality of states during each of a plurality of time periods.
摘要:
The present invention relates to a lighting device (100) to stimulate plant growth and bio-rhythm of a plant. The lighting device (100) comprising a solid state light source (102) arranged to emit direct red light having a wavelength of 600 to 680 nm, preferably 640 to 680 nm, and a wavelength converting member (106) arranged to receive at least part of said direct red light emitted from said solid state light source (102) and to convert said received direct red light to far-red light having a maximum emission wavelength of 700 to 760 nm, preferably 720 to 760 nm.