Koninklijke Philips Corporation N.v.

Signify Holding B.v.

Philips Lighting Holding B.v.

Henricus Marie Peeters

Rob Franciscus Maria Van Elmpt

Martinus Petrus Joseph Peeters

Roel Van Woudenberg

René Theodorus Wegh

Cristina Tanase

Rifat Ata Mustafa Hikmet

Marcellinus Petrus Carolus Michael Krijn

Carsten Deppe

Rene Theodorus Wegh

Martinus Petrus Creusen

Peter Hubertus Franciscus Deurenberg

Paulus Albertus Van Hal

Céline Catherine Sarah Nicole

Theodoor Cornelis Treurniet

Petrus Johannes Bremer

Rémy Cyrille Broersma

Gabriel-Eugen Onac

Marc Andre Peters

Wouter Petrus Kaandorp

Dirk Veldman

Rob Otte

Patrick Henricus Johannes Van Stijn

Esther Maria Van Echtelt

Esther De Beer

Alexander Christiaan De Rijck

Rainier Franciscus Xaverius Alphonsus Marie Mols

Ronaldus Johannes Marie Velings

Vincent Gerardus Petrus Cornelis Van Den Broek

Patrick John Zijlstra

Remy Cyrille Broersma

Ronaldus Johannes Maria Velings

A fish lighting system has an input interface () which receives instructions corresponding to a desired fish behavioral and/or physiological response (). This is converted into a lighting control signal (RGB, t) for driving a lighting arrangement (), with the intensity and color of the output from the lighting arrangement selected to obtain the desired fish behavioral and/or physiological response.

Artificial lighting system for fish and a method of providing fish lighting

The present invention relates to a lighting device () to stimulate plant growth and bio-rhythm of a plant. The lighting device () comprising a solid state light source () arranged to emit direct red light having a wavelength of 600 to 680 nm, preferably 640 to 680 nm, and a wavelength converting member () arranged to receive at least part of said direct red light emitted from said solid state light source () 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.

Horticulture lighting device and a method to stimulate plant growth and bio-rhythm of a plant

A luminaire arrangement () comprising a luminaire holder () and a luminaire module (). The luminaire holder () is arranged to be attached to a ground plane () and comprises electrical circuitry connectors (), grommet seals () provided on said electrical circuitry connectors (), and a shield (). The luminaire module () comprises a covering () and is arranged to be received in the luminaire holder (). The shield () and the covering () are arranged to form a sealing arrangement between the luminaire holder () and the luminaire module (), when the luminaire module () is received in the luminaire holder ().

Watertight luminaire arrangement

The invention describes a lighting circuit () comprising a primary set () of light-emitting diodes () of a first color and a secondary set () of light-emitting diodes () of a further color; wherein a temperature-dependent reduction in light output of the primary set () of light-emitting diodes () is greater than a temperature-dependent reduction in light output of the secondary set () of light-emitting diodes (); and a flux ratio fixing arrangement realized to maintain an essentially constant ratio between the light output of the primary set () and the light output of the secondary set () during a temperature-dependent overall reduction in light output of the light-emitting diodes () of the lighting circuit (). The invention also describes a lighting arrangement (') for illuminating objects () with light of a predefined color point, which lighting arrangement (&#x2032;) comprises at least one such lighting circuit (), wherein the light-emitting diode sets () of a lighting circuit () 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 () is realized to maintain that color point at a temperature higher that the initial temperature.

LED lighting circuit

The invention provides an interface () for converting a desired physiological plant response into control instructions for at least one lighting system () which has an adjustable lighting property, said interface () 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 (), functionally coupled to said processor for transmitting said control instructions to said at least one lighting system () wherein said desired physiological plant response is defined as a set point in a multi-dimensional horticulture action space.

Horticulture lighting interface for interfacing at least one lighting system

The present invention relates to a control interface module () adapted to receive a lighting module () and to be fitted to a holder () by means of at least one fixating element provided through the control interface module () and into the holder (), wherein the holder () comprises electrical connecting elements () for providing electrical power to the lighting module () and mechanical connecting elements (&#x2033;) for fixating the lighting module (), wherein the control interface module () comprising an inner surface() having at least one recess () matching a recess () arranged in the holder (), wherein the at least one recess () is configured to receive a corresponding protruding portion () of the lighting module (), a control signal input interface () adapted to receive at least one wire adapted to convey a control signal from a control unit, and a control signal output interface () adapted to receive a control signal connector () of the lighting module () and to provide the control signal to the lighting module ().

Control interface module for a lighting module

A solid state lighting module () for attachment to a socket () through rotation of the solid state lighting module around an axis of rotation (). The solid state lighting module () comprises at least one solid state light-source (); a heat spreading member () having two surfaces arranged opposite each other and in thermal connection with each other, the first surface () being in thermal connection with the solid state light-source (); and fastening means () arranged to co-operate with fastening means () comprised in the socket () to bring the second surface () of the heat spreading member () in thermal connection with a heat sink () comprised in the socket (). The second surface () of the heat spreading member () has a surface topography with at least one peak () and at least one valley () arranged concentrically in relation to the axis of rotation ().

Solid state lighting module with improved heat spreader

Method and apparatus for a LED lighting unit (), including an inverter circuit () electrically coupled to a LED module () having a pair of antiparallel LED groupings. The inverter circuit () provides for color and/or dimming control of the LED module (). 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.

LED lighting unit with color and dimming control

The invention relates to a power supply circuit () and methods for supplying electrical power to at least one load output. The circuit comprises a main power supply unit () with a voltage input (), a main switching element () and a reactive element (). The switching element () is controllable to deliver an output voltage or current (I out). Output units () with load outputs are connected to a main power supply unit (). In order to drive loads connected to the load outputs, e.g. LEDs, OLEDs or laser diodes, with exact pulses, each output unit () has a load switching element () to connect or disconnect the main power supply unit () to or from the load output. There are further provided switched capacitor units (), each with a capacitor (C) and a capacitor switching element (). The capacitor units may be operated such that the capacitors remain essentially charged at different voltage levels. According to a second aspect of the invention, each output unit () has a switched capacitor unit () with a capacitor (C) and a capacitor switching element () connected to the load output. The load switching element () and the capacitor switching elements () are controlled synchronously.

Power supply circuit having switched capacitor units

Disclosed is a driver that includes a main power supply that has outputs coupled across a string of light emitting diodes to supply a main current. A secondary power supply is coupled to a junction between successive light emitting diodes in the string to supply or withdraw a delta current from the junction. The delta current is at least five times smaller than the main current. A controller controls the secondary power supply to generate the delta current to obtain a desired spectral composition of the mixed light emitted by the string.

Driving light emitting diodes

The present invention relates to a method for determining drive values for driving a lighting device at a desired brightness and color. The method comprising the steps of determining a first luminous flux weight ratio based on the desired color and a first drive current for driving each of the differently colored LEDs, determining a first luminous flux for each of the differently colored LEDs based on the desired brightness and the first luminous flux weight ratio, comparing, for each of the differently colored LEDs, the first luminous flux with a nominal luminous flux for a plurality of different drive currents, selecting, for each of the differently colored LEDs, a preferred drive current that at least can produce the first luminous flux, determining a second luminous flux weight ratio based on the desired color and the selected drive currents for each of the differently colored LEDs, determining a second luminous flux for each of the differently colored LEDs based on the desired brightness and the second luminous flux weight ratio, and determining a duty cycle for each of the differently colored LEDs at the selected drive currents, wherein the selected currents at the determined duty cycles produces the second luminous flux for each of the differently colored LEDs. The present invention provides for the possibility to limit the number of necessary computational steps for determining preferred drive currents. Furthermore, an increase in number of current level and/or differently colored LEDs would only slightly increase the computational cost.

Method and driver for determining drive values for driving a lighting device

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Baarlo, Netherlands

Henricus Marie Peeters