Patent application number | Description | Published |
20100074622 | LINE-OF-SIGHT OPTICAL DETECTION SYSTEM, AND COMMUNICATION SYSTEM - A line-of-sight optical detection system comprises: a plurality of dimmable light sources ( | 03-25-2010 |
20100208236 | METHOD FOR DETERMINING THE POSITION OF AN OBJECT IN A STRUCTURE - This invention relates to a method for determining the position of an object in a structure. The object receives modulated light waves from a plurality of light sources, which are arranged in the structure. The modulation is individually coded, and the position of the light sources in the structure is known. The modulation signals are synchronized, and thereby it is possible to determine the position of the object on basis of measuring the phase difference between the phase of each received modulated light wave and a comparison phase. The phase difference is used for distance calculations, which in turn give the position of the object. | 08-19-2010 |
20100219761 | SENSING CODED LIGHT USING RETRO REFLECTORS - 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. | 09-02-2010 |
20100301776 | METHOD AND A SYSTEM FOR CONTROLLING A LIGHTING SYSTEM - The present invention relates to a location commissioning method for a lighting system, which comprises several lighting arrangements. Thus, an illuminated position, of for example a room, is selected for the performing the commissioning, which is then associated with that position. This commissioning is called Luxissioning™. The position is assigned a position id, and the light at the position is measured. Light data associated with each one of the lighting arrangements is derived from the measured light, and the light data is associated with the position id. Light transfer data is determined on basis of the light data and current drive data for the lighting arrangements and stored in a light effect setting array for the position id. A light effect setting method is also present, where there is requested a selected light effect at a selected position. For each such request data comprising a position id and a target light effect setting associated with the position is received. The associated initial light effect setting array is derived, for example by retrieving a stored one. Required drive data for the relevant light arrangements, for obtaining the target light effect setting, is determined by means of the light transfer data held in the array, and adjustments are made accordingly, if necessary. Devices and systems for performing the above methods are also addressed by this invention. | 12-02-2010 |
20100315010 | CONSISTENT COLOUR CALIBRATION IN LED-BASED LIGHTING INFRASTRUCTURE - The present invention relates to colour generation in an indoor or outdoor lighting device, and more particularly to a control method which provides spatially consistent colour 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. Colour 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 colour points of the light source under consideration. Indeed, colour 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. | 12-16-2010 |
20110043116 | ILLUMINATION SYSTEM AND METHOD FOR PROCESSING LIGHT - Proposed is an illumination system ( | 02-24-2011 |
20110044701 | LIGHT MODULE, ILLUMINATION SYSTEM AND METHOD INCORPORATING DATA IN LIGHT EMITTED - Proposed is a light module ( | 02-24-2011 |
20110076024 | OPTICAL RECEIVER FOR AN ILLUMINATION SYSTEM - 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—illumination system comprising such a optical receiver. The optical filter preferably comprises a fluorescent layer. | 03-31-2011 |
20110266415 | SENSOR DEVICE WITH TILTING OR ORIENTATION-CORRECTING PHOTO SENSOR FOR ATMOSPHERE CREATION - 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. | 11-03-2011 |