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公开(公告)号：EP2281308A2
公开(公告)日：2011-02-09
申请号：EP09738515.7
申请日：2009-04-23
发明人： MARTINY, Christoph , ACKERMANN, Bernd , SALSBURY, Marc , BECHTEL, Hans-Helmut , HEIDEMANN, Matthias
IPC分类号： H01L31/0232
CPC分类号： H01L31/02322 , H01L31/09 , H01L31/101 , H01L31/147 , H05B33/0869
摘要： The invention relates to a photo-detector comprising a light sensitive element (101) and a wavelength converter (103) arranged in front of the light sensitive element, the wavelength converter being configured to convert light of a first wavelength into light of a second wavelength and to direct the light of the second wavelength to the light sensitive element. The advantage is that a stable reading across the entire visible spectrum may be provided.
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公开(公告)号：EP1985156A1
公开(公告)日：2008-10-29
申请号：EP07705758.6
申请日：2007-02-01
CPC分类号： G01J3/10 , G01J3/501 , G01J3/51 , G01J3/513 , G01J2003/467 , H05B33/0869 , Y10S362/80
摘要： The invention relates to an illumination device (1) with a number of light emitters, for example LEDs (L1, L2, L3, L4) of individual emission spectra. Sensor units (D1, D2, D3, D4) can produce a vector of measurement signals (S1, S2, S3, S4) that represent the light output of a single active light emitter. Based on a linear relation obtained during a calibration procedure, a characteristic value of the light output of that light emitter (L1, L2, L3, L4) is then calculated from the measurement vector, wherein said characteristic value is based on the coefficients of a decomposition of the individual emission spectrum into basis functions.
摘要翻译： 本发明涉及具有多个发光体的照明装置（1），例如各个发射光谱的LED（L1，L2，L3，L4）。 传感器单元（D1，D2，D3，D4）可以产生表示单个有源光发射器的光输出的测量信号（S1，S2，S3，S4）向量。 基于在校准过程中获得的线性关系，然后从测量向量计算该发光体（L1，L2，L3，L4）的光输出的特征值，其中所述特征值基于 将各个排放谱分解为基函数。
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公开(公告)号：EP2092669A2
公开(公告)日：2009-08-26
申请号：EP07849266.7
申请日：2007-11-27
CPC分类号： H04B10/1149 , H04B10/1143 , H04B10/116 , H04B10/43 , H05B33/0845 , H05B37/0272
摘要： According to an exemplary embodiment of the present invention, a lighting system for communication with a remote control device is provided, which comprises a light emitting element adapted for emitting modulated light to the remote control and for detecting control signals from the remote control. This may provide for a communication between the remote control and the lighting system without the need of an extra sensor or an extra transmitter.
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公开(公告)号：EP1964448A1
公开(公告)日：2008-09-03
申请号：EP06832138.9
申请日：2006-12-07
发明人： MEIJER, Eduard, J. , MARTINY, Christoph , SCHULZ, Volkmar , WENDT, Matthias , AMBROSIUSSEN, Per
IPC分类号： H05B33/08
CPC分类号： H05B33/0869 , H05B33/0818
摘要： The present invention relates to a method for controlling an illumination device (100), the illumination device (100) comprising a flux sensing unit (101) and at least two differently colored light sources (102, 103, 104), the method comprising the steps of switching on and off each of the light sources according to a predefined pattern, acquiring measurement values by means of the flux sensing unit at predetermined intervals in accordance with the predefined pattern, calculating a color point for each of the light sources based on the measurement values, calculating a difference between the color points and corresponding reference color points, and adjusting an analog current drive level of the light sources, wherein the difference is minimized such that a desired color is obtained. The present invention provides for the possibilities to in a more accurate way correct for the color changes due to change in drive current, temperature, and aging effects. Furthermore, the control method according to the present invention does not require a factory calibration, or knowledge of batch specific binning information, for obtaining the current or temperature related characteristics of the light sources, which significantly reduces the cost normally related to factory calibration and batch specific binning information. Furthermore, the present invention relates to an illumination device (100) comprising means for performing such a method.
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5.发明公开LIGHT SENSOR AND LIGHTING DEVICE WITH ADAPTABLE COLOR 审中-公开LICHTSENSOR UND BELEUCHTUNGSVORRICHTUNG MIT EINSTELLBARER FARBE
公开(公告)号：EP2179258A2
公开(公告)日：2010-04-28
申请号：EP08807281.4
申请日：2008-08-11
CPC分类号： G01J1/02 , F21K9/60 , F21V23/0442 , F21Y2115/10 , G01J1/0204 , G01J1/04 , G01J1/0411 , G01J1/0437 , G01J1/0474 , G01J1/0488 , G01J1/32 , G01J3/513 , G01J2001/4252 , H01L2224/16225
摘要： Light sensors (1) are used in lighting applications, especially in combination with LEDs, to control and/or adapt the color point of light sources. Costs and/or performance of the light sensor (1) are essential in order to guarantee cost- effective light sources with reproducible color points. This aim is achieved by a light sensor (1) comprising a light diffuser (10), an optical non-transparent housing (11) having at least one window (12), at least one interference filter (13) and at least two photo sensors (14). The light diffuser (10) is arranged in such a way that light from outside the optical non-transparent housing (11) has to pass the light diffuser (10) so as to enter the interior of the optical non-transparent housing (11) via the window (12). The interference filter (13) and the at least two photo sensors (14) are arranged in the interior of the optical non-transparent housing (11), which interference filter (13) is arranged between the window (12) and the at least two photo sensors (14).
摘要翻译： 光传感器（1）用于照明应用中，特别是与LED组合，以控制和/或调整光源的色点。 光传感器（1）的成本和/或性能是必不可少的，以保证具有可重复色点的具有成本效益的光源。 该目的通过包括光扩散器（10）的光传感器（1），具有至少一个窗口（12）的光学非透明外壳（11），至少一个干涉滤光片（13）和至少两张照片 传感器（14）。 光漫射器（10）以这样的方式布置，使得来自光学非透明壳体（11）外部的光必须通过光漫射器（10）以便进入光学非透明壳体（11）的内部， 通过窗口（12）。 干涉滤光器（13）和至少两个光传感器（14）布置在光学不透明壳体（11）的内部，该干涉滤光器（13）布置在窗口（12）和至少 两个光电传感器（14）。
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6.发明公开
公开(公告)号：EP2281421A2
公开(公告)日：2011-02-09
申请号：EP09742517.7
申请日：2009-05-04
发明人： ACKERMANN, Bernd , HENTE, Dirk , MARTINY, Christoph , NIEUWLANDS, Erik , SAUERLAENDER, Georg , WENDT, Matthias
IPC分类号： H05B33/08
CPC分类号： H05B33/086 , B61L5/1881 , G09G3/3413 , G09G3/3426 , G09G2320/0242 , G09G2320/064 , G09G2320/0666 , G09G2360/147 , Y02B20/341
摘要： The present invention relates to a device and method for controlling the color point of an LED light source (50). Color point control is a most interesting product feature both for white and colored LED light sources. In known methods for the color control of RGB LED light sources use is made of flux and color sensors. However, there are difficulties with respect to sensing quickly changing ambient light, deeply dimmed colors, coordinating the measurements with the switching of the LEDs, and controlling the color in LED light units comprising a number of independent LED lamps, e.g. segmented wall washers and LCD backlights. It is proposed according to the present invention to control the color of the LED light source (50), using a model-based feed forward approach. Factors relating the parameters controlling the LED currents to the brightness for the different colors (and segments) are stored and used for open loop control. A slow-running procedure continuously measures and updates these factors. Whilst the measurements are e.g. synchronized with the PWM, the procedure itself can run considerably slower and updates the factors asynchronously.
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公开(公告)号：EP2011371A2
公开(公告)日：2009-01-07
申请号：EP07735291.2
申请日：2007-03-28
IPC分类号： H05B33/08
CPC分类号： H05B33/0848 , H05B33/0818
摘要： Operating a lighting device by acquiring a target brightness level of at least one solid-state lighting unit, and determining a reference driving current amplitude for obtaining the target brightness level. If the reference driving current amplitude is below an optimum driving current amplitude, the solid-state lighting unit is operated at the optimum driving current amplitude, which is pulse-width modulated to obtain the target brightness level.
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公开(公告)号：EP1808050A1
公开(公告)日：2007-07-18
申请号：EP05791937.5
申请日：2005-10-17
IPC分类号： H05B33/08
CPC分类号： H05B33/0827 , H05B33/0854
摘要： The present invention relates to a lighting device, as well as to a lighting system comprising such a lighting device and an adjustable power source, and also relates to a method of driving such a lighting system. The lighting device comprises at least one LED (1a, 1b), a control device that comprises a measuring means (7, 9) to measure a quantity that is indicative of an electrical resistance of said LED at a predetermined current or voltage, a power supply control means (11) connected to said measuring means (7, 9) and constructed to control an adjustable electrical power supply (3a, 3b) for driving the LED (1a, 1b), said signal being based on said value of said quantity. The electrical resistance of a LED is functionally dependent of the LED’s junction temperature, which in turn determines its optical output characteristics. Thus, by measuring the junction temperature indirectly, through measuring of electrical LED characteristics, and mapping them to a temperature, LED output control is possible.
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公开(公告)号：EP2092669B1
公开(公告)日：2013-06-26
申请号：EP07849266.7
申请日：2007-11-27
IPC分类号： H04B10/114 , H04B10/116 , H04B10/43
CPC分类号： H04B10/1149 , H04B10/1143 , H04B10/116 , H04B10/43 , H05B33/0845 , H05B37/0272
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公开(公告)号：EP2002457B1
公开(公告)日：2011-01-26
申请号：EP07735121.1
申请日：2007-03-15
发明人： PIETIG, Rainer , MARTINY, Christoph
摘要： An x-ray tube disclosed here in includes an emitter arranged to emit electrons on to a focal spot on a rotatable anode. The x-ray tube also includes a hollow tube arranged to receive electromagnetic radiation from the focal spot at one end of the hollow tube and transmit it to another end. The x-ray tube also includes two or more sensors arranged to detect the electromagnetic radiation through the hollow tube.
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