Koninklijke Philips Corporation N.v.

Signify Holding B.v.

Philips Lighting Holding B.v.

Koninlijke Philips Electronics N.v.

Paulus Henricus Antonius Damink

Lorenzo Feri

Sel Brian Colak

Tim Corneel Wilhelmus Schenk

Johan Paul Marie Gerard Linnartz

Dragan Sekulovski

Maurice Herman Johan Draaijer

Johan-Paul Marie Gerard Linnartz

Hendricus Theodorus Gerardus Maria Penning De Vries

Martin Maurice Vernhout

Jorge Guajardo Merchan

Cornelis Reinder Ronda

Hongming Yang

Maurice Leonardus Anna Stassen

There is provided a positioning system that comprises a GPS device including a GPS receiver arranged to receive GPS satellite signals from a plurality of GPS satellites and an attenuation device arranged to attenuate GPS satellite signals such that when a GPS satellite is located in a first portion of sky the GPS satellite signals received by the GPS receiver from said GPS satellite are attenuated. A storage is provided to store satellite location information for the plurality of GPS satellites over time at a location of the GPS receiver, and a controller is provided to determine location information of the GPS device based on received GPS information from the GPS device, wherein the received GPS information comprises information on signal strengths of the GPS satellite signals received by the GPS receiver. If a signal strength for a first GPS satellite is lower than a threshold signal strength at a point in time then the controller is arranged to determine that the first GPS satellite is in the first portion of the sky and determine angle information of the GPS device relative to earth's normal and/or orientation information of the GPS device in a horizontal plane using the stored satellite location information.

Positioning system and method for positioning

The invention relates to an optical receiver for receiving visible light, wherein the visible light comprises an intensity modulated signal. The optical receiver comprises an optical intensity modulation filter configured for filtering the intensity modulated signal from the visible light and a photo detector configured for detecting said filtered modulated signal. The invention also relates to an&#x2014;illumination system comprising such a optical receiver. The optical filter preferably comprises a fluorescent layer.

Optical receiver for an illumination system

Proposed is a light module () comprising at least two primary light sources () capable of emitting a primary color light. This allows the light module to emit light having intensity (Y) and color coordinates (x,y) through additive color mixing of the constituent primary colors. The light module further comprises an modulator () capable of modulating the primary light sources enabling embedment of data in the light emitted. The modulator () is arranged to modulate the color coordinates of the light emitted for embedding the data. This is especially advantageous as the sensitivity of the human eye to changes in color is lower than to changes in intensity. The invention thus advantageously allows embedding the data into the light emitted from the light modules () of an illumination system () without reducing the performance of its primary function as an aid to human vision.

Light module, illumination system and method incorporating data in light emitted

It is presented a method for transmitting lighting device data. The method comprises the steps of obtaining, in a lighting device, a subset of lighting device data, the lighting device data containing information of the lighting device, transmitting, from the lighting device, using light, the subset of lighting device data, and repeating the above steps until all subsets jointly corresponding to the complete lighting device data have been transmitted. A corresponding lighting device and lighting system are also presented.

Method, system and device for transmitting lighting device data

A location commissioning method for a lighting system, having several lighting arrangements, includes selecting an illuminated position, assigning the position a position id, measuring light at the position, deriving light data associated with each lighting arrangement from the measured light, associating the light data with the position id, determining light transfer data from the light data and current drive data for the lighting arrangements, and storing in a light effect setting array for the position id. A light effect setting method includes requesting a selected light effect at a selected position, receiving a position id and a target light effect setting associated with the position, deriving the associated initial light effect setting array, for example by retrieving a stored one, determining the drive data for obtaining the target light effect setting, via the light transfer data in the array.

Method and a system for controlling a lighting system

Proposed is an illumination system () comprising a plurality of light sources () provided with encoders () arranged to enable light emitted from the light sources to comprise light source identification codes. In order to enable light effect commissioning, i.e. correlating the light sources () with their illumination footprints (), the system further comprises a camera () arranged to register images of illumination spots (), and a signal processor () arranged to derive the light source identification codes from registered images. Arranging the encoders () to modulate the light emitted at a frequency above a predefined high level to comprise fast codes () and at a frequency below a predefined low level to comprise slow codes (), beneficially allows for the use of simple low cost camera systems.

Illumination system and method for processing light

The present invention relates to a method and a device for controlling a physical property of light emitted from a light source. In particular, the invention can be applied to a lighting system for atmosphere creation. The measurements needed for feedback control are made at a portable user device comprising a planar photodetector. More or less all industrially available photodetectors are of the planar type, but planarity is in fact a necessary feature to achieve faithful relative measurements. Since the user device is portable, variations in the orientation of the photodetector can introduce large and unpredictable measurement errors, making effective control of the light source impossible. According to one embodiment of the invention, the orientation-dependent errors are eliminated by measuring the actual orientation of the photodetector and processing the detection signal appropriately. According to a second embodiment, the photodetector is movably mounted in the user device in order to retain its preferred orientation irrespective of the orientation of the user device. In a third embodiment, the emitted light is monitored by a plurality of photodetectors; knowing the actual orientation of the user device, the control device can give priority to the measurements coming from the best oriented photodetector at every instant.

Sensor device with tilting or orientation-correcting photo sensor for atmosphere creation

The present invention relates to color generation in an indoor or outdoor lighting device, and more particularly to a control method which provides spatially consistent color control of a lighting device designed for use in, e.g., spatially extended premises or environments containing obstacles, and thus including multiple light sensors to allow efficient control. Color consistency is achieved by an arrangement where light of one or more of the light sources impinges on more than one light sensor. If constructional detector features, such as filter characteristics, coincide, then these sensors should in principle, after the appropriate processing, report identical color points of the light source under consideration. Indeed, color is a path-independent property of light, and this is the basis for a mutual calibration scheme of the detectors according to the invention. The calibration scheme is part of a control algorithm and is intended for use in place of a conventional control algorithm, either intermittently or permanently.

Consistent colour calibration in LED-based lighting infrastructure

A lighting system includes a first and a second controllable light sources generating, respectively, a first and a second lights; a first detector configured to receive at least a portion of the first light and measure at least one attribute thereof in a first predetermined location proximate to the first controllable light source; a memory configured to store at least one of a specification of the second controllable light source and at least one operating parameter of the first controllable light source. The system also includes a processor configured to receive the at least one attribute of the first light, and to control the second controllable light source to generate the second light having an attribute that substantially matches the attribute of the first light in a predetermined second location.

Systems and methods for copying lighting conditions using light-wave identification

This invention relates to a luminaire comprising a light source emitting output light, and a detector unit, which is arranged to detect received light emanating from a remote reflection of said output light, wherein the detector unit comprises a first identifier, which is arranged to identify a remotely introduced reflector identifying light coding of the received light. The invention also relates to a method for determining a property of light at a remote position.

Sensing coded light using retro reflectors

A vehicle position measurement system () and method to determine the (relative) position of a vehicle () and an object () are proposed. The system comprises at least two light sources () capable of emitting light and positioned at a predetermined distance () to each other. Furthermore the system comprises at least one detector () capable of measuring the light emitted. The light emitted by the light sources comprises synchronized light source identification codes. The detector is arranged to determine the position of the vehicle () and object () on the basis of a phase-difference measurement between the light originating from the individual light sources () and a comparison phase. The vehicle () may comprise the at least two light sources () and the detector (), while the phase-difference is measured between light reflected from the object () and the comparison phase. Alternatively, the vehicle () may comprise the at least two light sources () while the object () comprises the detector () and the detector is arranged to obtain the comparison phase from the light received from one of the light sources (). The object may be a vehicle.

Vehicle positioning measurement system and method

In an optical communication method, an accurate common clock signal (GPS) is provided to a sender () and a receiver (). In the sender, the common clock signal is received, a first clock signal (CLK) is generated on the basis of said common clock signal, a carrier wave with a predetermined carrier frequency (f) is generated using said clock signal as timing reference, the carrier wave is modulated with a data signal, and the modulated carrier wave is transmitted using a light beam (). In the receiver, the common clock signal is received, a reference signal having the same frequency (f) as the carrier frequency is generated on the basis of said common clock signal, said optical beam () is received, a detection signal is derived from the optical beam, the receiver is tuned to the predetermined carrier frequency (f), and the data signal is derived from the detection signal.

Growing community of inventors

Eindhoven, Netherlands

Paulus Henricus Antonius Damink