公开(公告)号：USRE48955E1

公开(公告)日：2022-03-01

申请号：US15970436

申请日：2018-05-03

申请人： Lutron Technology Company LLC

发明人： Horace C. Ho ,  Rebecca Frank

IPC分类号： H05B37/02 ,  H05B33/08 ,  H05B45/22 ,  H05B45/37

摘要： A method and light emitting diode (LED) illumination device comprising multiple emitter modules are provided. In one embodiment, the method includes bringing to a level insufficient to produce illumination the respective drive currents of all except one of multiple emission LED elements within respective first and second emitter modules for the duration of a measurement interval within respective first and second series of measurement intervals. The measurement intervals are 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 emitter modules, where each emitter module includes multiple emission LED elements and one or more photodetectors. The illumination device further includes a lamp control circuit adapted to perform steps of the method.

公开(公告)号：US11246196B2

公开(公告)日：2022-02-08

申请号：US16296198

申请日：2019-03-07

申请人： XIAMEN ECO LIGHTING CO. LTD.

发明人： Yan Biao Chen ,  Hong Kui Jiang ,  Qi Yuan Wang ,  Hui Wu Chen

IPC分类号： H05B45/20 ,  F21K9/232 ,  H05B47/19 ,  H05B45/00 ,  H01L33/50 ,  H05B33/06 ,  H05B45/37 ,  F21V23/04 ,  F21K9/238

摘要： A light apparatus for generating a mixed light output. The light apparatus includes multiple LED modules. Each LED module includes multiple LED regions. The multiple LED regions have separate electrodes. The multiple LED regions share the same package housing but at least two LED regions are covered with different fluorescent layers for emitting lights with different optical characteristics.

公开(公告)号：US11212894B2

公开(公告)日：2021-12-28

申请号：US16882214

申请日：2020-05-22

申请人： The Watt Stopper, Inc.

发明人： Jeffrey T. Davis ,  Jonathan P. Cartrette

IPC分类号： G06F1/32 ,  H05B45/37 ,  H02J1/00 ,  H02M7/04 ,  H02J1/08 ,  H02J5/00 ,  H05B47/18 ,  H05B47/19

摘要： A scalable DC power distribution and control system suitable for commercial buildings includes one or more power and control hubs. Each DC power and control power hub provides power and control for any suitable distributed DC loads such as light-fixtures. AC power from the electric utility is applied to the power and control hub and is converted to DC power for distribution to DC loads within the space using low-voltage cables.

公开(公告)号：US11205966B2

公开(公告)日：2021-12-21

申请号：US16594244

申请日：2019-10-07

申请人： Silergy Semiconductor Technology (Hangzhou) LTD

发明人： Qiukai Huang ,  Jian Deng

IPC分类号： H02M3/335 ,  H05B45/37 ,  H02M1/14

摘要： An AC-DC power converter can include: a front-stage power circuit; a rear-stage power circuit configured to share one power switch as a main power switch with the front-stage power circuit, where the rear-stage power circuit is coupled to a load, and a first magnetic component of the front-stage power circuit and a second magnetic component of the rear-stage power circuit are not in one conductive loop from a positive terminal of a DC input voltage to a negative terminal of the DC input voltage; and an energy storage capacitor coupled to the front-stage power circuit and the rear-stage power circuit, where energy is transferred to the energy storage capacitor and the load when the first magnetic component is discharged.

公开(公告)号：US20210378068A1

公开(公告)日：2021-12-02

申请号：US17332140

申请日：2021-05-27

申请人： POINT TEK CO., LTD.

发明人： Shi Hong Park ,  Jun Sik Kim

IPC分类号： H05B45/37 ,  H02M7/04 ,  H02M7/10

摘要： Disclosed herein is a AC direct LED driving apparatus. The light emitting diode (LED) driving apparatus includes: a rectifier configured to receive and rectify an alternating current (AC) voltage; an LED configured to emit light based on a rectified voltage received from the rectifier; a capacitor connected to a first terminal of the LED, and configured to drive the LED while alternating between charging and discharging sections according to a preset cycle; a first current driver connected to a second terminal of the LED and configured to control a path of current flowing in the LED and the capacitor based on different input voltage levels; a second current driver configured to control charging and discharging of the capacitor; and a first diode connected onto a current path of the capacitor and the second current driver, and configured to form a discharging path for driving the LED based on a charged voltage of the capacitor.

公开(公告)号：US11191137B1

公开(公告)日：2021-11-30

申请号：US17219267

申请日：2021-03-31

申请人： Monolithic Power Systems, Inc.

发明人： Junjian Zhao ,  Chia-Lung Ni ,  Zheng Luo ,  Yu-Huei Lee ,  Huan Liu

IPC分类号： H05B45/46 ,  H05B45/14 ,  H05B45/37 ,  H03K19/20 ,  H03K5/24

摘要： An LED driving system with a master-slave architecture. The LED driving system has at least two LED driving circuits which both have a first status detecting circuit, a second status detecting circuit and a first feedback control circuit. The first status detecting circuit receives a plurality of headroom detecting voltages provided by a plurality of LED strings and generates at least one self-status signal. The second status detecting circuit receives a downstream feedback signal and generates at least one downstream status signal. The first feedback control circuit generates a first feedback control signal based on the at least one self-status signal and the at least one downstream status signal. The second status detecting circuit of one LED driving circuit is coupled to the first feedback control circuit of the other LED driving circuit.

公开(公告)号：US11190103B2

公开(公告)日：2021-11-30

申请号：US16599585

申请日：2019-10-11

申请人： Maxim Integrated Products, Inc.

发明人： Suresh Hariharan

IPC分类号： H02M3/158 ,  H02M3/07 ,  H05B45/37

摘要： Described herein are embodiments for systems and methods LED driver. In one or more embodiments, the LED driver may operate in a boost mode to charge a capacitor using a power source or in a boost mode to use the charged capacitor to provide current to a load, such as an LED string. In one or more embodiments, the LED driver uses a single inductor for boost mode operation or buck mode operation. Such embodiments simplify the LED driver and therefore provide an economic advantage. In one or more embodiments, the power source is disconnected in the buck mode, such that the capacitor may be discharged to a low voltage. Therefore, the capacitor may need smaller capacitance to deliver the same discharge energy which otherwise requires a capacitor with larger capacitance.

公开(公告)号：US20210356089A1

公开(公告)日：2021-11-18

申请号：US17391611

申请日：2021-08-02

申请人： Lynk Labs, Inc.

发明人： Michael Miskin

IPC分类号： F21S8/02 ,  F21S8/04 ,  F21V23/00 ,  F21S9/02 ,  F21V25/10 ,  F21V23/06 ,  F21S2/00 ,  H05B47/19 ,  H05B45/39 ,  H05B45/42 ,  H05B45/50 ,  H05B45/40 ,  H05B45/37

摘要： A lighting system includes an LED downlight mountable to a ceiling, a driver, and an insulation displacement connector (IDC). Light from the downlight can be faced downward to project light or upward to reflect light off of the ceiling. The driver has an input with a first voltage and an output with a second voltage, the second voltage being lower than the first and being provided through a wire system extending from the LED driver. The IDC connects the downlight to the wire system. The lighting system can be changed from a first to a second configuration by at least one of adding an additional downlight using a corresponding IDC or removing an existing downlight using a corresponding IDC. The second configuration does not significantly affect a desired output range of light from any downlight or any LED circuit of any downlight that remains or preexists from the first configuration.

公开(公告)号：US11178741B1

公开(公告)日：2021-11-16

申请号：US15386587

申请日：2016-12-21

申请人： Hughey & Phillips, LLC

发明人： Jeffrey A Jacobs ,  Steven M. Schneider ,  Brian J. Hockensmith

IPC分类号： H05B45/37 ,  H05B45/50 ,  F21V3/02 ,  F21Y115/10 ,  F21Y113/00 ,  F21V7/00 ,  G08G5/04

摘要： A lighting system includes a first light emitter configured to emit light outside a visible-light spectrum. A second light emitter is configured to emit light in a visible-light spectrum. The first and second light emitters are co-located, such as in a stacked arrangement with one light emitted atop the other. The amount of visible illumination of the second light emitter may correspond to a correlated radiant intensity of infrared light emitted by the first light emitter.

公开(公告)号：US20210348749A1

公开(公告)日：2021-11-11

申请号：US17133598

申请日：2020-12-23

申请人： XIAMEN LEEDARSON LIGHTING CO.,LTD

发明人： Jian Chen ,  Qiqiang Lin

IPC分类号： F21V23/04 ,  F21V29/70 ,  F21V23/00 ,  F21V29/89 ,  H05B47/19 ,  H05B45/37 ,  H05B45/54 ,  H05B45/345

摘要： A luminating module includes a base, a radio frequency antenna and a luminance module. The base includes a circuit layer, an isolation layer, and a heat-dissipating layer. And the isolation layer is disposed between the circuit layer and the heat-dissipating layer. The radio frequency antenna is disposed at the circuit layer. Also, the radio frequency antenna receives a radio analog control signal. The radio frequency module is disposed at the circuit layer. In addition, the radio frequency module transforms the radio analog control signal into a digital control signal. The luminance module is integrated on the base and electrically coupled to the circuit layer. Besides, the luminance module illuminates based on the digital control signal. Specifically, the base, the radio frequency antenna, the radio frequency module and the luminance module integrate with each other via the circuit layer.