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公开(公告)号：US20210054986A1
公开(公告)日：2021-02-25
申请号：US17013214
申请日：2020-09-04
申请人： Lutron Ketra, LLC
发明人： Fangxu Dong , Horace C. Ho , David J. Knapp
摘要： Illumination devices with improved color mixing optics are disclosed herein for mixing the colors produced by a multi-colored LED emitter module to produce uniform color throughout the entire beam angle of the output light beam, along with smoother edges and improved center beam intensity. Embodiments disclosed herein include a unique arrangement of multi-color LEDs within an emitter module, a unique exit lens with different patterns of lenslets on opposing sides of the lens, and other associated optical features that thoroughly mix the different color components, and as such, provide uniform color across the output beam exiting the illumination device. Additional embodiments disclosed herein include a unique arrangement of photodetectors within the primary optics structure of the LED emitter module that ensure the optical feedback system properly measures the light produced by all similarly colored emission LEDs.
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公开(公告)号：USRE48298E1
公开(公告)日：2020-11-03
申请号：US15982681
申请日：2018-05-17
申请人： Lutron Ketra, LLC
发明人： Horace C. Ho , Rebecca Frank
摘要： A method and illumination device are provided for interference-resistant compensation in light emitting diode (LED) illumination devices. In one embodiment, the method includes bringing to a level insufficient to produce illumination the respective drive current of all except one of multiple emission LED elements for the duration of a first measurement interval and a later-occurring second measurement interval. The first and second measurement intervals are within respective first and second series of measurement intervals interspersed with periods of illumination, and the first and second series of measurement intervals are separated by respective first and second offsets from a timing reference. An embodiment of an illumination device includes multiple emission LED elements, one or more photodetectors, and a lamp control circuit, where the lamp control circuit is adapted to perform steps of the method.
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公开(公告)号：US10767835B2
公开(公告)日：2020-09-08
申请号：US16422927
申请日：2019-05-24
申请人： Lutron Ketra, LLC
发明人： Fangxu Dong , Horace C. Ho , David J. Knapp
IPC分类号： F21V5/00 , F21K9/233 , F21V23/04 , H05B45/22 , H05B45/46 , F21Y113/13 , F21Y105/10
摘要： Illumination devices with improved color mixing optics are disclosed herein for mixing the colors produced by a multi-colored LED emitter module to produce uniform color throughout the entire beam angle of the output light beam, along with smoother edges and improved center beam intensity. Embodiments disclosed herein include a unique arrangement of multi-color LEDs within an emitter module, a unique exit lens with different patterns of lenslets on opposing sides of the lens, and other associated optical features that thoroughly mix the different color components, and as such, provide uniform color across the output beam exiting the illumination device. Additional embodiments disclosed herein include a unique arrangement of photodetectors within the primary optics structure of the LED emitter module that ensure the optical feedback system properly measures the light produced by all similarly colored emission LEDs.
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4.发明申请公开(公告)号：US20190380192A1
公开(公告)日：2019-12-12
申请号：US16417107
申请日：2019-05-20
申请人： Lutron Ketra, LLC
发明人： Mark Quilling , Rebecca Frank , Kenneth Priester
摘要： An illumination system and method is disclosed for maintaining a consistent change in illumination value among a group of illumination devices whenever a change command is manually sent from a keypad to those illumination devices. The consistent change results from maintaining a common start illumination value among not only the group, but also the keypad which controls the group. From the start illumination value, the keypad can then compute an end illumination value depending upon the amount of time that the increase or decrease in illumination value button is depressed and held. Since the start change signal can arrive on different illumination devices within the group depending upon where each illumination device is geographically located, a masking time is reserved after the button is released so that enough time is allocated for each of the illumination devices within that group to arrive at a common end illumination value regardless of their disparate location to the keypad, the number of hops or interference therebetween.
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公开(公告)号：US20190124743A1
公开(公告)日：2019-04-25
申请号：US16222430
申请日：2018-12-17
申请人： Lutron Ketra, LLC
发明人： Nav Sooch , Horace C. Ho , Rebecca Frank , Jason E. Lewis , Ryan Matthew Bocock
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.
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公开(公告)号：US10237945B2
公开(公告)日：2019-03-19
申请号：US15264775
申请日：2016-09-14
申请人： Lutron Ketra, LLC
发明人： Nav Sooch , Horace C. Ho , Rebecca Frank , Jason E. Lewis , Ryan Matthew Bocock
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.
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公开(公告)号：US20220057050A1
公开(公告)日：2022-02-24
申请号：US17413904
申请日：2019-12-17
申请人： LUTRON KETRA LLC
发明人： Fangxu Dong
摘要： An emitter module for a light-emitting diode (LED) light source may comprise a substrate, and a plurality of emitters mounted to the substrate, where each emitter is configured to produce illumination at a different wavelength, and the number of emitters is greater than four (e.g., five emitters). The emitter module may also comprise a dome mounted to the substrate and encapsulating the plurality of emitters. Each of the plurality of emitters is arranged such that a center of the emitter is located on a circular center line that has a center that is the same as a center of the dome. Each of the plurality of emitters is located on a different primary radial axis of the emitter module. Each of the primary radial axes of the emitter module is equally spaced apart by an offset angle. The emitter module may also comprise an additional one of each of the emitters at each of the different wavelengths (e.g., ten total emitters).
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公开(公告)号：US20210082281A1
公开(公告)日：2021-03-18
申请号：US17102369
申请日：2020-11-23
申请人： Lutron Ketra, LLC
发明人： David J. Knapp , Horace C. Ho
IPC分类号： G08C23/04 , H04B10/116 , H04L12/28 , H04L12/64 , H05B47/19
摘要： A system and method are provided herein for communicating with and controlling various devices using visible light communication (VLC). According to one embodiment, a method is provided for extending a communication range of a VLC system comprising a plurality of controlled devices and a remote control device. Such a method may include, for example, transmitting a communication message from a remote control device to a first controlled device located within range of the remote control device, wherein the communication message is transmitted through free space using visible light, and extending the communication range of the VLC system to a second controlled device, which is located outside of the range of the remote control device, by using the first controlled device to retransmit the communication message through free space using visible light to the second controlled device.
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公开(公告)号：USRE48452E1
公开(公告)日：2021-02-23
申请号：US16033917
申请日：2018-07-12
申请人： Lutron Ketra, LLC
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.
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公开(公告)号：US10405397B2
公开(公告)日：2019-09-03
申请号：US15639633
申请日：2017-06-30
申请人： Lutron Ketra, LLC
发明人： Nav Sooch , Horace C. Ho , Rebecca Frank , Jason E. Lewis , Ryan Matthew Bocock
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.
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