公开(公告)号：US20120235585A1

公开(公告)日：2012-09-20

申请号：US13509863

申请日：2010-04-13

申请人： Ihor Lys ,  Michael Datta ,  Gregory Campbell

发明人： Ihor Lys ,  Michael Datta ,  Gregory Campbell

IPC分类号： H05B37/02 ,  G06F19/00

CPC分类号： H05B39/044 ,  Y02B20/146

摘要： A device for detecting a dimmer phase angle set by operation of a dimmer for a solid state lighting load includes a processor having a digital input, a first diode connected between the digital input and a voltage source and a second diode connected between the digital input and ground. The device further includes a first capacitor connected between the digital input and a detection node, a second capacitor connected between the detection node and ground, and a resistance connected between the detection node and a rectified voltage node, which receives a rectified voltage from the dimmer. The processor is configured to sample digital pulses at the digital input based on the rectified voltage and to identify the dimmer phase angle based on lengths of the sampled digital pulses.

摘要翻译： 用于检测通过固态照明负载的调光器的操作设置的调光相位角的装置包括具有数字输入的处理器，连接在数字输入和电压源之间的第一二极管和连接在数字输入和 地面。 该装置还包括连接在数字输入和检测节点之间的第一电容器，连接在检测节点和地之间的第二电容器以及连接在检测节点和整流电压节点之间的电阻，该电阻接收来自调光器的整流电压 。 处理器被配置为基于整流电压在数字输入处采样数字脉冲，并且基于采样的数字脉冲的长度来识别调光相位角。

公开(公告)号：US08816593B2

公开(公告)日：2014-08-26

申请号：US13509863

申请日：2010-04-13

申请人： Ihor Lys ,  Michael Datta ,  Gregory Campbell

发明人： Ihor Lys ,  Michael Datta ,  Gregory Campbell

IPC分类号： H05B41/36 ,  H05B37/02 ,  H05B39/00

CPC分类号： H05B39/044 ,  Y02B20/146

摘要： A device for detecting a dimmer phase angle set by operation of a dimmer for a solid state lighting load includes a processor having a digital input, a first diode connected between the digital input and a voltage source and a second diode connected between the digital input and ground. The device further includes a first capacitor connected between the digital input and a detection node, a second capacitor connected between the detection node and ground, and a resistance connected between the detection node and a rectified voltage node, which receives a rectified voltage from the dimmer. The processor is configured to sample digital pulses at the digital input based on the rectified voltage and to identify the dimmer phase angle based on lengths of the sampled digital pulses.

摘要翻译： 用于检测通过固态照明负载的调光器的操作设置的调光相位角的装置包括具有数字输入的处理器，连接在数字输入和电压源之间的第一二极管和连接在数字输入和 地面。 该装置还包括连接在数字输入和检测节点之间的第一电容器，连接在检测节点和地之间的第二电容器以及连接在检测节点和整流电压节点之间的电阻，该电阻接收来自调光器的整流电压 。 处理器被配置为基于整流电压在数字输入处采样数字脉冲，并且基于采样的数字脉冲的长度来识别调光相位角。

公开(公告)号：US08736197B2

公开(公告)日：2014-05-27

申请号：US12681631

申请日：2008-10-08

申请人： Michael Datta ,  Ihor Lys

发明人： Michael Datta ,  Ihor Lys

IPC分类号： H05B37/02

CPC分类号： F21K9/60 ,  H01L2224/48091 ,  H01L2224/48227 ,  H05B33/0818 ,  H05B33/0857 ,  Y02B20/347 ,  H01L2924/00014

摘要： A lighting apparatus (100) includes one or more first LEDs (202) for generating a first spectrum of radiation (503), and one or more second LEDs (204) for generating a second different spectrum radiation (505). The first and second LEDs are electrically connected in series between a first node (516A) and a second node (516B), between which a series current (550) flows with the application of an operating voltage (516) across the nodes. A controllable current path (518) is connected in parallel with one or both of the first and second LEDs so as to at least partially divert the series current, such that a first current (552) through the first LED(s) and a second current (554) through the second LED(s) are different. Such current diversion techniques may be employed to compensate for shifts in color or color temperature of generated light during thermal transients, due to different temperature-dependent current-to-flux relationships for different types of LEDs.

摘要翻译： 照明装置（100）包括用于产生第一辐射光谱（503）的一个或多个第一LED（202）和用于产生第二不同光谱辐射（505）的一个或多个第二LED（204）。 第一和第二LED串联电连接在第一节点（516A）和第二节点（516B）之间，串联电流（550）流过跨越节点的工作电压（516）流动。 可控电流路径（518）与第一和第二LED中的一个或两个并联连接，以至少部分地转移串联电流，使得通过第一LED的第一电流（552）和第二LED 通过第二LED的电流（554）是不同的。 由于不同类型的LED的不同的温度依赖的电流 - 通量关系，可以采用这种电流分流技术来补偿在热瞬态期间所产生的光的颜色或色温的变化。

公开(公告)号：US20130106298A1

公开(公告)日：2013-05-02

申请号：US13634956

申请日：2011-03-01

申请人： Michael Datta ,  Gregory Campbell ,  Mark Rabiner

发明人： Michael Datta ,  Gregory Campbell ,  Mark Rabiner

IPC分类号： H05B37/02

CPC分类号： H05B33/0845 ,  H05B33/0815 ,  H05B33/0824 ,  H05B37/02

摘要： A device for controlling levels of light output by a solid state lighting load at low dimming levels includes a bleed circuit connected in parallel with the solid state lighting load. The bleed circuit includes a resistor and a transistor connected in series, the transistor being configured to turn on and off in accordance with a duty cycle of a digital control signal when a dimming level set by a dimmer is less than a predetermined first threshold, decreasing an effective resistance of the bleed circuit as the dimming level decreases.

摘要翻译： 用于在低调光水平下控制由固态照明负载输出的光的水平的装置包括与固态照明负载并联连接的放电电路。 放电电路包括串联连接的电阻器和晶体管，所述晶体管被配置为当由调光器设置的调光电平小于预定的第一阈值时根据数字控制信号的占空比导通和关断，减小 当调光水平降低时，放电电路的有效电阻。

公开(公告)号：US09456486B2

公开(公告)日：2016-09-27

申请号：US13634956

申请日：2011-03-01

申请人： Michael Datta ,  Gregory Campbell ,  Mark Rabiner

发明人： Michael Datta ,  Gregory Campbell ,  Mark Rabiner

IPC分类号： H05B37/02 ,  H05B33/08

CPC分类号： H05B33/0845 ,  H05B33/0815 ,  H05B33/0824 ,  H05B37/02

摘要： A device for controlling levels of light output by a solid state lighting load at low dimming levels includes a bleed circuit connected in parallel with the solid state lighting load. The bleed circuit includes a resistor and a transistor connected in series, the transistor being configured to turn on and off in accordance with a duty cycle of a digital control signal when a dimming level set by a dimmer is less than a predetermined first threshold, decreasing an effective resistance of the bleed circuit as the dimming level decreases.

摘要翻译： 用于在低调光水平下控制由固态照明负载输出的光的水平的装置包括与固态照明负载并联连接的放电电路。 放电电路包括串联连接的电阻器和晶体管，所述晶体管被配置为当由调光器设置的调光电平小于预定的第一阈值时根据数字控制信号的占空比导通和关断，减小 当调光水平降低时，放电电路的有效电阻。

公开(公告)号：US10015860B2

公开(公告)日：2018-07-03

申请号：US13639880

申请日：2011-03-29

申请人： Michael Datta ,  Gregory Campbell

发明人： Michael Datta ,  Gregory Campbell

IPC分类号： H05B37/02 ,  H05B33/08 ,  H05B39/08

CPC分类号： H05B37/02 ,  H05B33/0815 ,  H05B39/08

摘要： A system and method control an amount of power delivered by a power converter (220) to a solid state lighting load (240). It is determined whether a dimmer (204) is present between a voltage source (201) and the power converter (220) based on a rectified input voltage from the voltage source. When the dimmer is determined to be present, an operating point of the power converter is adjusted to increase the amount of power delivered by the power converter to the solid state lighting load by a compensation amount, so that the increased amount of power is equal to an amount of power delivered by the power converter when the dimmer is not present.

公开(公告)号：US09485833B2

公开(公告)日：2016-11-01

申请号：US13636165

申请日：2011-03-11

申请人： Michael Datta ,  Gregory Campbell

发明人： Michael Datta ,  Gregory Campbell

IPC分类号： H05B37/02 ,  H05B33/08

CPC分类号： H05B37/02 ,  H05B33/0809 ,  H05B33/0845

摘要： A system for controlling a level of light output by a solid state lighting load controlled by a dimmer includes a phase angle detector and a power converter. The phase angle detector is configured to detect a phase angle of the dimmer based on a rectified voltage from the dimmer and to determine a power control signal based on comparison of the detected phase angle with a predetermined first threshold. The power converter is configured to provide an output voltage to the solid state lighting load, the power converter operating in an open loop mode based on the rectified voltage from the dimmer when the detected phase angle is greater than the first threshold, and operating in a closed loop mode based on the rectified voltage from the dimmer and the determined power control signal from the detection circuit when the detected phase angle is less than the first threshold.

摘要翻译： 用于通过由调光器控制的固态照明负载来控制光输出电平的系统包括相位角检测器和功率转换器。 相位角检测器被配置为基于来自调光器的整流电压来检测调光器的相位角，并且基于检测到的相位角与预定的第一阈值的比较来确定功率控制信号。 功率转换器被配置为向固态照明负载提供输出电压，当检测到的相位角大于第一阈值时，功率转换器基于来自调光器的整流电压以开环模式工作，并且在 当检测到的相位角小于第一阈值时，基于来自调光器的整流电压的闭环模式和来自检测电路的确定的功率控制信号。

公开(公告)号：US20130193866A1

公开(公告)日：2013-08-01

申请号：US13639880

申请日：2011-03-29

申请人： Michael Datta ,  Gregory Campbell

发明人： Michael Datta ,  Gregory Campbell

IPC分类号： H05B37/02

CPC分类号： H05B37/02 ,  H05B33/0815 ,  H05B39/08

摘要： A system and method control an amount of power delivered by a power converter (220) to a solid state lighting load (240). It is determined whether a dimmer (204) is present between a voltage source (201) and the power converter (220) based on a rectified input voltage from the voltage source. When the dimmer is determined to be present, an operating point of the power converter is adjusted to increase the amount of power delivered by the power converter to the solid state lighting load by a compensation amount, so that the increased amount of power is equal to an amount of power delivered by the power converter when the dimmer is not present.

摘要翻译： 系统和方法控制由功率转换器（220）传送到固态照明负载（240）的功率量。 基于来自电压源的整流输入电压，确定电压源（201）和功率转换器（220）之间是否存在调光器（204）。 当确定存在调光器时，调整功率转换器的工作点以增加功率转换器向固态照明负载传递的功率量的补偿量，使得增加的功率量等于 当不存在调光器时由功率转换器传递的功率量。

公开(公告)号：US20130141001A1

公开(公告)日：2013-06-06

申请号：US13636165

申请日：2011-03-11

申请人： Michael Datta ,  Gregory Campbell

发明人： Michael Datta ,  Gregory Campbell

IPC分类号： H05B37/02

CPC分类号： H05B37/02 ,  H05B33/0809 ,  H05B33/0845

摘要： A system for controlling a level of light output by a solid state lighting load controlled by a dimmer includes a phase angle detector and a power converter. The phase angle detector is configured to detect a phase angle of the dimmer based on a rectified voltage from the dimmer and to determine a power control signal based on comparison of the detected phase angle with a predetermined first threshold. The power converter is configured to provide an output voltage to the solid state lighting load, the power converter operating in an open loop mode based on the rectified voltage from the dimmer when the detected phase angle is greater than the first threshold, and operating in a closed loop mode based on the rectified voltage from the dimmer and the determined power control signal from the detection circuit when the detected phase angle is less than the first threshold.

摘要翻译： 用于通过由调光器控制的固态照明负载来控制光输出电平的系统包括相位角检测器和功率转换器。 相位角检测器被配置为基于来自调光器的整流电压来检测调光器的相位角，并且基于检测到的相位角与预定的第一阈值的比较来确定功率控制信号。 功率转换器被配置为向固态照明负载提供输出电压，当检测到的相位角大于第一阈值时，功率转换器基于来自调光器的整流电压以开环模式工作，并且在 当检测到的相位角小于第一阈值时，基于来自调光器的整流电压的闭环模式和来自检测电路的确定的功率控制信号。

公开(公告)号：US20120181944A1

公开(公告)日：2012-07-19

申请号：US13496947

申请日：2010-09-01

申请人： Joseph Hendrik Ann Maria Jacobs ,  Michael Datta

发明人： Joseph Hendrik Ann Maria Jacobs ,  Michael Datta

IPC分类号： H05B37/02

CPC分类号： H05B33/0815 ,  H05B33/0845 ,  Y02B20/346 ,  Y02B20/383

摘要： Disclosed are devices and related methods for optimally extending the range of light output of solid-state light sources, particularly at minimum light levels, through a power converter that includes a phase detector, a processing unit and a switch. The phase detector is configured to receive a voltage signal and to detect rising edges of waveforms of the voltage signal. The processing unit is configured to initiate a predetermined shutdown period in response to each detected rising edge. The switch is configured to provide a control signal that deactivates the power converter during the shutdown period, preventing the power converter from providing power to the solid state light unit during the shutdown period.

摘要翻译： 公开了通过包括相位检测器，处理单元和开关的功率转换器来最佳地扩展固态光源的光输出范围的装置和相关方法，特别是在最小光水平。 相位检测器被配置为接收电压信号并检测电压信号的波形的上升沿。 处理单元被配置为响应于每个检测到的上升沿而启动预定的关闭时段。 该开关被配置为提供一个控制信号，在停机期间停止功率转换器，防止功率转换器在关闭期间向固态光单元供电。