公开(公告)号：US20140327366A1

公开(公告)日：2014-11-06

申请号：US14158872

申请日：2014-01-20

Applicant: Lextar Electronics Corporation

Inventor： En-Min WU

IPC: H05B33/08

CPC classification number: H05B33/0815

Abstract: An illumination device includes a light-emitting diode (LED) lamp and a LED dimming circuit. The LED dimming circuit includes a power converting module, a sensing unit and a dimming module. The power converting module is used to generate a driving voltage to drive the LED lamp. The sensing unit is used to generate a sensing voltage signal. The dimming module includes an input interface, a dimming signal generator and an isolating unit. The input interface is used to receive a dimming control signal. The dimming signal generator is used to output a first feedback signal based on the sensing voltage signal and the dimming control signal. The isolating unit is used to receive the first feedback signal and output a second feedback signal to the power converting module so as to control a driving current.

Abstract translation: 照明装置包括发光二极管（LED）灯和LED调光电路。 LED调光电路包括电源转换模块，感测单元和调光模块。 电源转换模块用于产生驱动LED灯的驱动电压。 感测单元用于产生感测电压信号。 调光模块包括输入接口，调光信号发生器和隔离单元。 输入接口用于接收调光控制信号。 调光信号发生器用于基于感测电压信号和调光控制信号输出第一反馈信号。 隔离单元用于接收第一反馈信号并将第二反馈信号输出到功率转换模块，以便控制驱动电流。

公开(公告)号：US20130278160A1

公开(公告)日：2013-10-24

申请号：US13682376

申请日：2012-11-20

Applicant: LEXTAR ELECTRONICS CORPORATION

Inventor： En-Min WU

IPC: H05B37/02

CPC classification number: H05B37/02 ,  H05B33/0845 ,  H05B37/0245 ,  H05B39/085 ,  H05B41/3927

Abstract: The present application relates to an illumination device having a light source module, a power supply module, a driving module, a control module and a start module. The driving module outputs a driving current to the light source module based on a power supply from the power supply module. The control module controls the magnitude of the driving current based on a first voltage signal generated by the power source module. After receiving the first voltage signal, the control module controls the driving module to steadily increase the driving current in a first stage output. After receiving the first voltage signal again, the control module controls the driving module to output a constant driving current equal to the driving current at the end of the first stage.

Abstract translation: 本申请涉及具有光源模块，电源模块，驱动模块，控制模块和启动模块的照明装置。 驱动模块基于来自电源模块的电源向光源模块输出驱动电流。 控制模块基于由电源模块产生的第一电压信号来控制驱动电流的大小。 在接收到第一电压信号之后，控制模块控制驱动模块稳定地增加第一级输出中的驱动电流。 在再次接收到第一电压信号之后，控制模块控制驱动模块在第一级结束时输出等于驱动电流的恒定驱动电流。

公开(公告)号：US20180058677A1

公开(公告)日：2018-03-01

申请号：US15683789

申请日：2017-08-23

Applicant: Lextar Electronics Corporation

Inventor： En-Min WU ,  Hsien-Chih HO

IPC: F21V23/00 ,  F21V23/04

CPC classification number: F21V23/008 ,  F21S8/00 ,  F21V23/04 ,  H02J9/065 ,  H05B33/0815 ,  Y02B20/383

Abstract: A lighting system includes a lighting source module, which includes an alternating-current input terminal and a direct-current input terminal. When an alternating-current power source is supplied, the alternating-current power source drives the lighting source module through the alternating-current input terminal for generating light. When the alternating-current power source is not supplied, a direct-current power source drives the lighting source module through the direct-current input terminal for generating light.

公开(公告)号：US20140117851A1

公开(公告)日：2014-05-01

申请号：US14038739

申请日：2013-09-26

Applicant: Lextar Electronics Corporation

Inventor： Chun-Kuang CHEN ,  En-Min WU ,  Hui-Ying CHEN

IPC: H05B37/00

CPC classification number: H05B33/0809

Abstract: An illumination system includes a lighting unit, a rectifier circuit, a drive circuit and a time control circuit. The rectifier circuit rectifies an AC power from an external power source to a DC power. The drive circuit is configured for receiving the DC power and generating a first driving current. The control circuit includes a resistive element and an energy storage element. The energy storage element is electrically coupled to the resistive element, and the energy storage element is configured for charging while the external power source is supplying the power to the illumination system and generating a second driving current to the lighting unit. When the external power source turns off, the energy storage element generates a discharging current to the lighting unit with the resistive element to extend the time duration which a bright state of the lighting unit goes to a dark state.

Abstract translation: 照明系统包括照明单元，整流电路，驱动电路和时间控制电路。 整流电路将来自外部电源的AC电力整流至DC电力。 驱动电路被配置为接收DC电力并产生第一驱动电流。 控制电路包括电阻元件和能量存储元件。 能量存储元件电耦合到电阻元件，并且能量存储元件构造成用于充电，同时外部电源向照明系统供电并产生到照明单元的第二驱动电流。 当外部电源关闭时，能量存储元件利用电阻元件产生到照明单元的放电电流，以延长照明单元的明亮状态进入暗态的持续时间。

公开(公告)号：US20130271012A1

公开(公告)日：2013-10-17

申请号：US13712555

申请日：2012-12-12

Applicant: LEXTAR ELECTRONICS CORPORATION

Inventor： En-Min WU

IPC: H05B37/02

CPC classification number: H05B37/02 ,  H05B33/0845 ,  H05B37/0281 ,  Y02B20/42

Abstract: An illumination system includes a light module, a power module, a driver module, a light sensor module, and a control module. The power module is coupled to an input power source. The power module converts the input power source and outputs a direct voltage. The driver module, coupled between the light module and the power module, converts the direct voltage into a driving voltage and then outputs a driving current to drive the light module. The light sensor module senses an environment brightness and outputs a brightness signal. The control module receives the brightness signal and outputs a light modulation signal to the driver module, wherein the driver module controls the activation time of the light module according to the light modulation signal.

Abstract translation: 照明系统包括光模块，电源模块，驱动器模块，光传感器模块和控制模块。 电源模块耦合到输入电源。 电源模块转换输入电源并输出直流电压。 耦合在光模块和电源模块之间的驱动器模块将直流电压转换为驱动电压，然后输出驱动电流以驱动光模块。 光传感器模块感测环境亮度并输出亮度信号。 控制模块接收亮度信号并将光调制信号输出到驱动器模块，其中驱动器模块根据光调制信号控制光模块的激活时间。