公开(公告)号：US20240341019A1

公开(公告)日：2024-10-10

申请号：US18746733

申请日：2024-06-18

Applicant: Lutron Technology Company LLC

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

IPC: H05B47/10 ,  G01J1/02 ,  G01J1/32 ,  G01J1/42 ,  G01J1/44 ,  G01J3/02 ,  G01J3/46 ,  G01J3/50 ,  G01R31/44 ,  H05B45/12 ,  H05B45/18 ,  H05B45/22 ,  H05B45/24 ,  H05B47/105 ,  H05B47/21 ,  H05B47/24

CPC classification number: H05B47/10 ,  G01J1/0252 ,  G01J1/32 ,  G01J1/42 ,  G01J3/0286 ,  G01J3/465 ,  G01J3/505 ,  G01R31/44 ,  H05B45/12 ,  H05B45/22 ,  H05B45/24 ,  H05B47/22 ,  H05B47/24 ,  G01J2001/4252 ,  G01J2001/444 ,  H05B45/18 ,  H05B47/105

Abstract: An illumination device and method are provided herein for calibrating individual LEDs in the illumination device 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：US12050126B2

公开(公告)日：2024-07-30

申请号：US18220774

申请日：2023-07-11

Applicant: Lutron Technology Company LLC

Inventor： Kuo-Lih Chang ,  Mickey Malone ,  Horace C. Ho

IPC: G01J1/02 ,  G01J1/32 ,  G01J3/02 ,  G01J3/46 ,  G01J3/50 ,  H05B45/20 ,  H05B45/46 ,  H05B47/19 ,  G01J1/42 ,  G01J1/44 ,  H05B47/195

CPC classification number: G01J1/0252 ,  G01J1/32 ,  G01J3/0286 ,  G01J3/465 ,  G01J3/502 ,  G01J3/505 ,  H05B45/20 ,  H05B45/46 ,  H05B47/19 ,  G01J2001/4252 ,  G01J2001/444 ,  H05B47/195

Abstract: An illumination device comprises one or more emitter modules having improved thermal and electrical characteristics. According to one embodiment, each emitter module comprises a plurality of light emitting diodes (LEDs) configured for producing illumination for the illumination device, one or more photodetectors configured for detecting the illumination produced by the plurality of LEDs, a substrate upon which the plurality of LEDs and the one or more photodetectors are mounted, wherein the substrate is configured to provide a relatively high thermal impedance in the lateral direction, and a relatively low thermal impedance in the vertical direction, and a primary optics structure coupled to the substrate for encapsulating the plurality of LEDs and the one or more photodetectors within the primary optics structure.

公开(公告)号：USRE49421E1

公开(公告)日：2023-02-14

申请号：US16282231

申请日：2019-02-21

Applicant: Lutron Technology Company LLC

Inventor： David J. Knapp ,  Horace C. Ho ,  Joseph A. Savage

IPC: H04B10/116 ,  H05B45/28 ,  H05B45/22 ,  H05B45/375

Abstract: An illumination device comprising a plurality of light emitting diodes (LEDs) and a method for controlling the illumination device while avoiding flicker in the LED output is provided herein. According to one embodiment, the method may include driving the plurality of LEDs substantially continuously with drive currents configured to produce illumination, periodically turning the plurality of LEDs off for short durations of time during a first period to take measurements or communicate optical data, and increasing the drive currents supplied to the plurality of LEDs by a small amount when the LEDs are on during the first period to compensate for lack of illumination when the LEDs are periodically turned off during the first period.

公开(公告)号：US20220260232A1

公开(公告)日：2022-08-18

申请号：US17739857

申请日：2022-05-09

Applicant: Lutron Technology Company LLC

Inventor： Fangxu Dong ,  Horace C. Ho ,  David J. Knapp

IPC: F21V5/00 ,  F21K9/233 ,  F21V23/04 ,  H05B45/22 ,  H05B45/46

Abstract: 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.

公开(公告)号：US20220114884A1

公开(公告)日：2022-04-14

申请号：US17558678

申请日：2021-12-22

Applicant: Lutron Technology Company, LLC

Inventor： David J. Knapp ,  Horace C. Ho

IPC: G08C23/04 ,  H04B10/116 ,  H04L12/28 ,  H05B47/195 ,  H04L12/64

Abstract: 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.

公开(公告)号：US20220104321A1

公开(公告)日：2022-03-31

申请号：US17548137

申请日：2021-12-10

Applicant: Lutron Technology Company LLC

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

IPC: H05B45/20 ,  H05B47/16

Abstract: An illumination device, system, and method are provided herein for emulating sunlight along a daytime or nighttime locus. Color temperature is determined using a first color temperature curve that includes data representative of a first color temperature as a function of a time of day. In response to a request to a change in brightness of one or more LED chains, a target color temperature output as a function of the current time of day is determined using a second color temperature curve based on the requested change in brightness. The second color temperature curve includes the target color temperature corresponding to the determined current time of day. The target color temperature output includes a lesser change in color temperature at solar noon than the change in color temperature at sunrise and sunset.

公开(公告)号：US11243112B2

公开(公告)日：2022-02-08

申请号：US16834368

申请日：2020-03-30

Applicant: Lutron Technology Company LLC

Inventor： Kuo-Lih Chang ,  Mickey Malone ,  Horace C. Ho

IPC: G01J1/02 ,  G01J3/46 ,  G01J3/50 ,  G01J3/02 ,  G01J1/32 ,  H05B45/20 ,  H05B45/46 ,  H05B47/19 ,  G01J1/44 ,  G01J1/42 ,  H05B47/195

Abstract: An illumination device comprises one or more emitter modules having improved thermal and electrical characteristics. According to one embodiment, each emitter module comprises a plurality of light emitting diodes (LEDs) configured for producing illumination for the illumination device, one or more photodetectors configured for detecting the illumination produced by the plurality of LEDs, a substrate upon which the plurality of LEDs and the one or more photodetectors are mounted, wherein the substrate is configured to provide a relatively high thermal impedance in the lateral direction, and a relatively low thermal impedance in the vertical direction, and a primary optics structure coupled to the substrate for encapsulating the plurality of LEDs and the one or more photodetectors within the primary optics structure.

公开(公告)号：US11210934B2

公开(公告)日：2021-12-28

申请号：US17102369

申请日：2020-11-23

Applicant: Lutron Technology Company LLC

Inventor： David J. Knapp ,  Horace C. Ho

IPC: G08C23/04 ,  H04B10/116 ,  H04L12/28 ,  H04L12/64 ,  H05B47/195

Abstract: 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.