公开(公告)号：US20180077783A1

公开(公告)日：2018-03-15

申请号：US15264815

申请日：2016-09-14

申请人： Ketra, Inc.

发明人： Nav Sooch ,  Horace C. Ho ,  Rebecca Frank ,  Jason E. Lewis ,  Ryan Matthew Bocock

IPC分类号： H05B37/02 ,  H05B33/08

CPC分类号： H05B37/0281 ,  H05B33/0863 ,  H05B37/0272 ,  Y02B20/42

摘要： An illumination device, system and method are provided herein for emulating sunlight along a daytime or nighttime locus. Sunlight is emulated depending on the path length of the sun relative to a structure containing the illumination device and system. One or more illumination devices can be grouped together and perform the sunlight emulation along the locus by producing different color temperatures throughout the day by all illumination devices within that group producing the same color temperature changes throughout the day. Moreover, a particular advantage of the preferred embodiments is the ability to manually change at any time the emulated natural sunlight output from the one or more groups of illumination devices and advantageously change the color output more so at certain times than at other times by simply actuating a trigger on a dimmer associated with a virtual or physical keypad.

公开(公告)号：US20170105260A1

公开(公告)日：2017-04-13

申请号：US15388607

申请日：2016-12-22

申请人： Ketra, Inc.

发明人： Horace Ho ,  Jason E. Lewis ,  David J. Knapp

IPC分类号： H05B33/08 ,  G01R31/44 ,  G01J3/50 ,  H05B37/02 ,  G01J1/42 ,  G01J3/46

CPC分类号： H05B33/0851 ,  G01J1/0252 ,  G01J1/32 ,  G01J1/42 ,  G01J3/0286 ,  G01J3/465 ,  G01J3/505 ,  G01J2001/4252 ,  G01J2001/444 ,  G01R31/44 ,  H05B33/0866 ,  H05B33/0869 ,  H05B37/02 ,  H05B37/0227

摘要： An illumination device and method is provided herein for calibrating individual LEDs in the illumination device, so as to obtain a desired luminous flux and a desired chromaticity of the device over changes in drive current, temperature, and over time as the LEDs age. The calibration method may include subjecting the illumination device to a first ambient temperature, successively applying at least three different drive currents to a first LED to produce illumination at three or more different levels of brightness, obtaining a plurality of optical measurements from the illumination produced by the first LED at each of the at least three different drive currents, obtaining a plurality of electrical measurements from the photodetector and storing results of the obtaining steps within the illumination device to calibrate the first LED at the first ambient temperature. The plurality of optical measurements may generally include luminous flux and chromaticity, the plurality of electrical measurements may generally include induced photocurrents and forward voltages, and the calibration method steps may be repeated for each LED included within the illumination device and upon subjecting the illumination device to a second ambient temperature.

公开(公告)号：US20160066383A1

公开(公告)日：2016-03-03

申请号：US14471057

申请日：2014-08-28

申请人： Ketra, Inc.

发明人： Alcides Jose Dias ,  Jason E. Lewis

IPC分类号： H05B33/08

CPC分类号： H05B33/0848 ,  H05B33/0851 ,  H05B33/0854 ,  H05B33/0869 ,  H05B33/0872 ,  H05B37/0272

摘要： An illumination device and method is provided herein for calibrating individual LEDs and photodetector(s) included within the illumination device, so as to obtain a desired luminous flux and a desired chromaticity of the device over time as the LEDs age. Specifically, a calibration method is provided herein for characterizing each emission LED and each photodetector separately. The wavelength and intensity of the illumination produced by each emission LED is accurately characterized over a plurality of different drive currents and ambient temperatures, and at least a subset of the wavelength and intensity measurement values are stored with a storage medium of the illumination device for each emission LED. The responsivity of the photodetector is accurately characterized over emitter wavelength and photodetector junction temperature, and results of said characterization are stored with the storage medium.

摘要翻译： 本发明提供了一种照明装置和方法，用于校准包括在照明装置内的各个LED和光电检测器，以便随着LED的寿命，随着时间的推移获得所需的光通量和期望的色度。 具体地，本文提供了用于分别表征每个发射LED和每个光电检测器的校准方法。 每个发射LED产生的照明的波长和强度在多个不同的驱动电流和环境温度下被精确表征，并且至少一个波长和强度测量值的子集与每个照明装置的存储介质一起存储 发光LED。 光电检测器的响应度在发射波长和光电检测器结温度上精确地表征，并且所述表征的结果与存储介质一起存储。

公开(公告)号：US20180075714A1

公开(公告)日：2018-03-15

申请号：US15265322

申请日：2016-09-14

申请人： Ketra, Inc.

发明人： Nav Sooch ,  Horace C. Ho ,  Rebecca Frank ,  Jason E. Lewis ,  Ryan Matthew Bocock

IPC分类号： G08B5/36 ,  H05B37/02 ,  H05B33/08 ,  G08B13/00

CPC分类号： G08B5/36 ,  H05B33/0845 ,  H05B33/0857 ,  H05B33/0863 ,  H05B37/0227 ,  H05B37/0272 ,  H05B37/0281 ,  H05B37/029

摘要： An illumination system and method is provided for readily mapping a plurality of scenes along a dimcurve form a natural show for one or more groups of LED illumination devices. Mapping can be performed using a graphical user interface on a remote controller wirelessly linked to the illumination devices. A keypad is preferably configured for button control of changes to color temperature as a function of brightness along each of the various dimcurves for each of the various groups of illumination devices controlled by a corresponding keypad to allow momentary or persistent override and reprogram of the natural show. Modification to a scene further comprises modifications to scenes before and after the currently modified scene to provide a smoothing dimcurve modification. Global keypad can be used to control multiple zones arranged throughout a structure to switch between a natural show that emulates outdoor sunlight conditions to a panic show when an intruder is detected.

公开(公告)号：US09510416B2

公开(公告)日：2016-11-29

申请号：US14471081

申请日：2014-08-28

申请人： Ketra, Inc.

发明人： Alcides Jose Dias ,  Jason E. Lewis

IPC分类号： H05B33/08

CPC分类号： H05B33/0848 ,  H05B33/0803 ,  H05B33/0818 ,  H05B33/0869 ,  H05B33/0872

摘要： An illumination device and method is provided herein for controlling an LED illumination device, so that a desired luminous flux and a desired chromaticity of the device can be maintained over time as the LEDs age. According to one embodiment, the method determines an expected wavelength value and an expected intensity value for each emission LED included within the illumination device at the drive current currently applied to the emission LED and the present emitter forward voltage. In addition, the method determines a photodetector responsivity for each emission LED at the expected wavelength value and the present photodetector forward voltage. The photodetector responsivity calculated for each emission LED is used as a reference for adjusting the lumen output of the emission LED to account for LED aging affects.

摘要翻译： 本文提供了一种用于控制LED照明装置的照明装置和方法，使得随着LED老化，随着时间的推移可以保持装置的期望的光通量和期望的色度。 根据一个实施例，该方法确定在目前施加到发射LED的驱动电流和当前发射极正向电压下包括在照明装置内的每个发射LED的预期波长值和预期强度值。 此外，该方法确定了在预期波长值和当前光电检测器正向电压下的每个发射LED的光电检测器响应度。 为每个发光LED计算的光电检测器响应度用作调整发光LED的流明输出的参考，以考虑LED老化影响。

公开(公告)号：US20150382422A1

公开(公告)日：2015-12-31

申请号：US14314530

申请日：2014-06-25

申请人： Ketra, Inc.

发明人： Horace C. Ho ,  Jason E. Lewis ,  David J. Knapp

IPC分类号： H05B33/08

CPC分类号： H05B33/0851 ,  G01J1/32 ,  H05B33/0869 ,  H05B33/0872 ,  H05B37/02 ,  Y02B20/46

摘要： An illumination device and method is provided herein for controlling individual light emitting diodes (LEDs) in an LED illumination device, so that a desired luminous flux and a desired chromaticity of the device can be maintained over time as the LEDs age. According to one embodiment, the method comprises applying drive currents to a plurality of LED chains substantially continuously to produce illumination, measuring a photocurrent induced on the photodetector in response to the illumination produced by each LED chain, one LED chain at a time, and received by the photodetector, and measuring a forward voltage developed across the photodetector by applying a non-operative drive current to the photodetector. For each LED chain, the method may further comprise determining an expected photocurrent value corresponding to the forward voltage measured across the photodetector and the drive current currently applied to the LED chain by applying one or more interpolation techniques to a table of stored calibration values correlating forward voltage and photocurrent to drive current at a plurality of different temperatures, and adjusting the drive current currently applied to the LED chain if a difference exists between the expected photocurrent value and the measured photocurrent.

摘要翻译： 本发明提供了一种用于控制LED照明装置中的各个发光二极管（LED）的照明装置和方法，从而随着LED的老化，随着时间的推移可以保持所需的光通量和期望的色度。 根据一个实施例，所述方法包括基本上连续地向多个LED链施加驱动电流以产生照明，测量响应于每个LED链产生的照射在光电检测器上感应的光电流，一次一个LED链，并且接收 并且通过向光电检测器施加非操作的驱动电流来测量横跨光电检测器产生的正向电压。 对于每个LED链，该方法还可以包括通过将一个或多个插值技术应用于存储的校准值表来确定对应于横跨光电检测器的正向电压的预期光电流值和当前施加到LED链的驱动电流 电压和光电流以驱动多个不同温度的电流，并且如果预期的光电流值和测量的光电流之间存在差异，则调节当前施加到LED链的驱动电流。

公开(公告)号：US20150377699A1

公开(公告)日：2015-12-31

申请号：US14314451

申请日：2014-06-25

申请人： Ketra, Inc.

发明人： Horace C. Ho ,  Jason E. Lewis ,  David J. Knapp

IPC分类号： G01J1/44

CPC分类号： H05B33/0851 ,  G01J1/0252 ,  G01J1/32 ,  G01J1/42 ,  G01J3/0286 ,  G01J3/465 ,  G01J3/505 ,  G01J2001/4252 ,  G01J2001/444 ,  G01R31/44 ,  H05B33/0866 ,  H05B33/0869 ,  H05B37/02 ,  H05B37/0227

摘要： An illumination device and method is provided herein for calibrating individual LEDs in the illumination device, so as to obtain a desired luminous flux and a desired chromaticity of the device over changes in drive current, temperature, and over time as the LEDs age. The calibration method may include subjecting the illumination device to a first ambient temperature, successively applying at least three different drive currents to a first LED to produce illumination at three or more different levels of brightness, obtaining a plurality of optical measurements from the illumination produced by the first LED at each of the at least three different drive currents, obtaining a plurality of electrical measurements from the photodetector and storing results of the obtaining steps within the illumination device to calibrate the first LED at the first ambient temperature. The plurality of optical measurements may generally include luminous flux and chromaticity, the plurality of electrical measurements may generally include induced photocurrents and forward voltages, and the calibration method steps may be repeated for each LED included within the illumination device and upon subjecting the illumination device to a second ambient temperature.

摘要翻译： 本文提供一种用于校准照明装置中的各个LED的照明装置和方法，以便随着LED寿命而获得期望的光通量和装置的驱动电流，温度和随时间的变化的期望色度。 校准方法可以包括使照明装置经受第一环境温度，连续地向第一LED施加至少三个不同的驱动电流以产生三个或更多个不同亮度级别的照明，从由以下的照明产生的照明获得多个光学测量值 在所述至少三个不同驱动电流中的每一个处的所述第一LED，从所述光电检测器获得多个电测量值，并且存储所述照明装置内的所述获得步骤的结果，以在所述第一环境温度下校准所述第一LED。 多个光学测量通常可以包括光通量和色度，多个电测量通常可以包括感应光电流和正向电压，并且可以针对包括在照明装置内的每个LED重复校准方法步骤，并且对照明装置 第二个环境温度。

公开(公告)号：US09736903B2

公开(公告)日：2017-08-15

申请号：US14314556

申请日：2014-06-25

申请人： Ketra, Inc.

发明人： Jason E. Lewis ,  Horace C. Ho ,  David J. Knapp

IPC分类号： G05F1/00 ,  H05B37/02 ,  H05B39/04 ,  H05B41/36 ,  H05B33/08 ,  G01J1/58 ,  G01J1/42 ,  G01J1/44 ,  G01J3/50 ,  G01J1/02

CPC分类号： H05B33/0869 ,  G01J1/0252 ,  G01J1/42 ,  G01J1/4228 ,  G01J1/4257 ,  G01J1/44 ,  G01J1/58 ,  G01J3/505 ,  G01J2001/4252 ,  G01J2001/4406

摘要： An illumination device described herein includes at least a phosphor converted LED, which is configured for emitting illumination for the illumination device, a first photodetector and a second photodetector. A spectrum of the illumination emitted from the phosphor converted LED comprises a first portion having a first peak emission wavelength and a second portion having a second peak emission wavelength, which differs from the first peak emission wavelength. The first photodetector has a detection range, which is configured for detecting only the first portion of the spectrum emitted by the phosphor converted LED. The second photodetector has a detection range, which is configured for detecting only the second portion of the spectrum emitted by the phosphor converted LED. Methods are provided herein for calibrating and controlling each portion of the phosphor converted LED spectrum, as if the phosphor converted LED were two separate LEDs.

公开(公告)号：US09674917B1

公开(公告)日：2017-06-06

申请号：US15265422

申请日：2016-09-14

申请人： Ketra, Inc.

发明人： Nav Sooch ,  Horace C. Ho ,  Rebecca Frank ,  Jason E. Lewis ,  Ryan Matthew Bocock

IPC分类号： H05B33/00 ,  H05B33/08 ,  H05B37/02 ,  G06F3/0484

CPC分类号： H05B33/0863 ,  H05B37/0227 ,  H05B37/0272 ,  H05B37/0281

摘要： An illumination system and method is provided for readily mapping a plurality of scenes along a dimcurve form a natural show for one or more groups of LED illumination devices. Mapping can be performed using a graphical user interface on a remote controller wirelessly linked to the illumination devices. A keypad is preferably configured for button control of changes to color temperature as a function of brightness along each of the various dimcurves for each of the various groups of illumination devices controlled by a corresponding keypad to allow momentary or persistent override and reprogram of the natural show. Modification to a scene further comprises modifications to scenes before and after the currently modified scene to provide a smoothing dimcurve modification. Global keypad can be used to control multiple zones arranged throughout a structure to switch between a natural show that emulates outdoor sunlight conditions to a panic show when an intruder is detected.

公开(公告)号：US09557214B2

公开(公告)日：2017-01-31

申请号：US14314451

申请日：2014-06-25

申请人： Ketra, Inc.

发明人： Horace C. Ho ,  Jason E. Lewis ,  David J. Knapp

IPC分类号： G01J1/32 ,  G01J3/46 ,  G01J3/50 ,  H05B37/02 ,  G01J1/02 ,  G01J3/02 ,  G01J1/42 ,  G01J1/44

CPC分类号： H05B33/0851 ,  G01J1/0252 ,  G01J1/32 ,  G01J1/42 ,  G01J3/0286 ,  G01J3/465 ,  G01J3/505 ,  G01J2001/4252 ,  G01J2001/444 ,  G01R31/44 ,  H05B33/0866 ,  H05B33/0869 ,  H05B37/02 ,  H05B37/0227

摘要： An illumination device and method is provided herein for calibrating individual LEDs in the illumination device, so as to obtain a desired luminous flux and a desired chromaticity of the device over changes in drive current, temperature, and over time as the LEDs age. The calibration method may include subjecting the illumination device to a first ambient temperature, successively applying at least three different drive currents to a first LED to produce illumination at three or more different levels of brightness, obtaining a plurality of optical measurements from the illumination produced by the first LED at each of the at least three different drive currents, obtaining a plurality of electrical measurements from the photodetector and storing results of the obtaining steps within the illumination device to calibrate the first LED at the first ambient temperature. The plurality of optical measurements may generally include luminous flux and chromaticity, the plurality of electrical measurements may generally include induced photocurrents and forward voltages, and the calibration method steps may be repeated for each LED included within the illumination device and upon subjecting the illumination device to a second ambient temperature.

摘要翻译： 本文提供一种用于校准照明装置中的各个LED的照明装置和方法，以便随着LED寿命而获得期望的光通量和装置的驱动电流，温度和随时间的变化的期望色度。 校准方法可以包括使照明装置经受第一环境温度，连续地向第一LED施加至少三个不同的驱动电流以产生三个或更多个不同亮度级别的照明，从由以下的照明产生的照明获得多个光学测量值 在所述至少三个不同驱动电流中的每一个处的所述第一LED，从所述光电检测器获得多个电测量值，并且存储所述照明装置内的所述获得步骤的结果，以在所述第一环境温度下校准所述第一LED。 多个光学测量通常可以包括光通量和色度，多个电测量通常可以包括感应光电流和正向电压，并且可以针对包括在照明装置内的每个LED重复校准方法步骤，并且对照明装置 第二个环境温度。