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    • 8. 发明申请
    • ILLUMINATION DEVICE AND METHOD FOR CONTROLLING AN ILLUMINATION DEVICE
    • 照明装置和控制照明装置的方法
    • WO2007069149A1
    • 2007-06-21
    • PCT/IB2006/054656
    • 2006-12-07
    • KONINKLIJKE PHILIPS ELECTRONICS N.V.PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBHMEIJER, Eduard, J.MARTINY, ChristophSCHULZ, VolkmarWENDT, MatthiasAMBROSIUSSEN, Per
    • MEIJER, Eduard, J.MARTINY, ChristophSCHULZ, VolkmarWENDT, MatthiasAMBROSIUSSEN, Per
    • H05B33/08
    • H05B33/0869H05B33/0818
    • 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.
    • 本发明涉及一种用于控制照明装置(100)的方法,所述照明装置(100)包括通量感测单元(101)和至少两个不同颜色的光源(102,103,104),所述方法包括 根据预定模式接通和关闭每个光源的步骤,根据预定模式以预定间隔获取通过磁通检测单元的测量值,基于该预定模式计算每个光源的色点 测量值,计算色点和相应的参考色点之间的差值,以及调整光源的模拟电流驱动电平,其中差值被最小化,使得获得期望的颜色。 本发明提供了以更准确的方式校正由于驱动电流,温度和老化效应的变化引起的颜色变化的可能性。 此外,根据本发明的控制方法不需要工厂校准或批量特定合并信息的知识,以获得光源的当前或温度相关特性,这显着降低了与工厂校准和批次通常相关的成本 特定的合并信息。 此外,本发明涉及一种包括用于执行这种方法的装置的照明装置(100)。
    • 9. 发明申请
    • METHOD FOR DRIVING A LED BASED LIGHTING DEVICE
    • 用于驱动基于LED的照明设备的方法
    • WO2006043232A1
    • 2006-04-27
    • PCT/IB2005/053401
    • 2005-10-17
    • KONINKLIJKE PHILIPS ELECTRONICS N.V.PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBHWENDT, MatthiasMARTINY, Christoph
    • WENDT, MatthiasMARTINY, Christoph
    • H05B33/08
    • H05B33/0827H05B33/0854
    • 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.
    • 照明装置技术领域本发明涉及照明装置以及包括这种照明装置和可调电源的照明系统,并且还涉及一种驱动这种照明系统的方法。 照明装置包括至少一个LED(1a,1b),控制装置,其包括测量装置(7,9),以测量指示所述LED在预定电流或电压下的电阻的量,功率 电源控制装置(11),连接到所述测量装置(7,9),并被构造成控制用于驱动LED(1a,1b)的可调电源(3a,3b),所述信号基于所述数量的所述值 。 LED的电阻在功能上取决于LED的结温,这又决定了其光输出特性。 因此,通过间接测量结温,通过测量电气LED特性,并将其映射到温度,LED输出控制是可能的。