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公开(公告)号：US09717127B1
公开(公告)日：2017-07-25
申请号：US15339961
申请日：2016-11-01
Applicant: Lextar Electronics Corporation
Inventor： Chien-Nan Yeh , Chun-Jong Chang , Po-Shen Chen , Jhao-Cyuan Huang , Tzu-Hao Liu
IPC: H05B33/08 , F21V23/04 , F21Y115/10
CPC classification number: H05B33/0845 , F21V23/04 , F21Y2115/10 , H05B33/0815
Abstract: A dimming system includes a signal generating circuit, a first dimming circuit and a second dimming circuit. The signal generating circuit generates the driving signal according to the input signal, and switches the driving signal between multiple states according to the switch signal. The first dimming circuit generates the dimming signal to adjust the luminance of the LED device according to the driving signal. When the driving signal is switched from the first states to the second states, the dimming signal is changed by the first dimming circuit so that the luminance of the LED device is adjusted from the first luminance to the second luminance. The second dimming circuit adjusts the input signal according to the control signal so that the dimming signal is adjusted and the luminance of the LED device is between the first luminance and minimum luminance, or between the second luminance and minimum luminance.
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公开(公告)号：US09867248B2
公开(公告)日：2018-01-09
申请号：US15361076
申请日：2016-11-25
Applicant: Lextar Electronics Corporation
Inventor： Chien-Nan Yeh , Chun-Jong Chang , Po-Shen Chen , Kai-Hsiang Shih , Jhao-Cyuan Huang , Ku-Cheng Lin
CPC classification number: H05B33/0845 , H05B33/083 , H05B33/0857 , H05B33/086
Abstract: A dimming module and a solid state lighting device are shown. The dimming module includes a rectifying circuit, a phase control circuit, a processing circuit and a first driving circuit. The rectifying circuit is configured to convert an input AC voltage to a rectified voltage signal. The phase control circuit is configured to receive the rectified voltage signal and a dimming command, and output a control voltage signal correspondingly in which the phase control circuit controls a phase delay angle of the control voltage signal according to the dimming command. The processing circuit is configured to receive the control voltage signal and adjust a first driving voltage signal according to the phase delay angle. The first driving circuit is configured to receive the first driving voltage signal to drive a first lighting module.
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公开(公告)号：US09474115B2
公开(公告)日：2016-10-18
申请号：US15062178
申请日：2016-03-06
Applicant: Lextar Electronics Corporation
Inventor： Chun-Jong Chang , Po-Shen Chen , Jhao-Cyuan Huang , Chien-Nan Yeh
CPC classification number: H05B33/0815 , H03K5/08 , H05B33/0812
Abstract: A dimming circuit is disclosed herein. The dimming circuit includes a control voltage receiving module and a driving module. The control voltage receiving module is configured to output a reference voltage according to a control voltage. The driving module is electrically connected to the control voltage receiving module, in which the driving module includes a driving transistor, a first transistor and a feedback circuit. The driving transistor is configured to provide a driving current to drive a lighting module. The first transistor is configured to control the driving transistor with feedback according to the reference voltage. The feedback circuit is electrically connected between the driving transistor and the first transistor and configured to determine the operating state of the first transistor according to the driving current.
Abstract translation: 本文公开了一种调光电路。 调光电路包括控制电压接收模块和驱动模块。 控制电压接收模块被配置为根据控制电压输出参考电压。 驱动模块电连接到控制电压接收模块，其中驱动模块包括驱动晶体管，第一晶体管和反馈电路。 驱动晶体管被配置为提供驱动电流以驱动照明模块。 第一晶体管被配置为根据参考电压来控制具有反馈的驱动晶体管。 反馈电路电连接在驱动晶体管和第一晶体管之间，并被配置为根据驱动电流确定第一晶体管的工作状态。
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公开(公告)号：US10172205B2
公开(公告)日：2019-01-01
申请号：US15591088
申请日：2017-05-09
Applicant: Lextar Electronics Corporation
Inventor： Jhao-Cyuan Huang , Chien-Nan Yeh , Chun-Jong Chang , Ching-Piao Chen , Po-Shen Chen
Abstract: A dimming module includes a triggering circuit, a control signal generating circuit, a voltage converting circuit, and a linear driving circuit. The triggering circuit is configured to control a trigger delay angle of an AC input voltage according to a dimming command, in order to output a first voltage signal correspondingly. The control signal generating circuit is configured to output a control voltage according to the first voltage signal. The voltage converting circuit is configured to output a DC operating voltage having an operating level according to the first voltage signal, and output the DC operating voltage to a lighting module, in which the lighting module includes a light-emitting diode. The linear driving circuit is configured to drive the lighting module according to the control voltage.
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公开(公告)号：US09867241B2
公开(公告)日：2018-01-09
申请号：US15361481
申请日：2016-11-27
Applicant: Lextar Electronics Corporation
Inventor： Chien-Nan Yeh , Chun-Jong Chang , Po-Shen Chen , Kai-Hsiang Shih , Jhao-Cyuan Huang , Ku-Cheng Lin
CPC classification number: H05B33/0818 , H05B33/0827 , H05B33/083 , H05B33/0857
Abstract: A dimming module and a solid state lighting device are shown. The dimming module includes a rectifying circuit, a first driving circuit, and a processing circuit. The rectifying circuit is configured to convert an AC voltage to a rectified voltage. The first driving circuit is configured to receive the rectified voltage to provide a first current so as to drive a first lighting module. The first driving circuit includes a first switch. The first switch turns ON or OFF selectively according to a first control voltage signal so as to control the first current. The processing circuit is configured to receive a dimming command, and adjust the first control voltage signal according to the dimming command. The first control voltage signal is configured to control a phase delay angle and a duty cycle of the first current.
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Patent Agency Ranking
公开(公告)号：US09538595B2
公开(公告)日：2017-01-03
申请号：US14953410
申请日：2015-11-29
Applicant: Lextar Electronics Corporation
Inventor： Chun-Jong Chang , Jhao-Cyuan Huang , Po-Shen Chen , Chien-Nan Yeh
CPC classification number: H05B33/0824 , H05B33/0809 , H05B33/0845
Abstract: An illumination device includes a rectifier circuit, M light-emitting modules, and a control module. The rectifier circuit has a positive output terminal and a negative output terminal, and generates a driving voltage between the positive output terminal and the negative output terminal according to an input power. The M light-emitting modules are coupled between the positive output terminal and the negative output terminal. Each of the M light-emitting modules has a conduction voltage, and includes a light-emitting unit that includes at least one light-emitting diode. The control module is coupled between the rectifier circuit and the M light-emitting modules, and controls the M light-emitting modules to dynamically form S light-emitting diode strings coupled in parallel with each other. A number of the light-emitting units in each of the S light-emitting diode strings is N, in which S×N=M, where M, S, N are positive integers.
Abstract translation: 照明装置包括整流电路，M个发光模块和控制模块。 整流电路具有正输出端子和负输出端子，根据输入功率在正输出端子和负输出端子之间产生驱动电压。 M个发光模块耦合在正输出端和负输出端之间。 M个发光模块中的每一个具有导通电压，并且包括包括至少一个发光二极管的发光单元。 控制模块耦合在整流电路和M个发光模块之间，并且控制M个发光模块以动态地形成彼此并联耦合的S个发光二极管串。 S个发光二极管串中的多个发光单元是N，其中S×N = M，其中M，S，N是正整数。
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公开(公告)号：US20160119994A1
公开(公告)日：2016-04-28
申请号：US14740766
申请日：2015-06-16
Applicant: Lextar Electronics Corporation
Inventor： Po-Shen Chen , Chun-Jong Chang , Chien-Nan Yeh
CPC classification number: H05B33/0851 , H02J1/00 , H02M5/297 , H05B33/0818 , Y02B20/346
Abstract: A solid state light source device and a dimming circuit are provided. The dimming circuit includes a rectifier circuit, a switch unit, and a control unit. The rectifier circuit is configured to convert an AC voltage signal to a rectified voltage signal. The switch unit is electrically connected between the rectifier circuit and a lighting module and configured to undergo switching according to a pulse width modulation signal to connect or disconnect the rectifier circuit and the lighting module. The control unit is electrically connected to the switch unit and configured to generate the pulse width modulation signal to control the switch unit.
Abstract translation: 提供固态光源装置和调光电路。 调光电路包括整流电路，开关单元和控制单元。 整流电路被配置为将AC电压信号转换成整流电压信号。 开关单元电连接在整流电路和点亮模块之间，并被配置为根据脉宽调制信号进行切换以连接或断开整流电路和照明模块。 控制单元电连接到开关单元并且被配置为产生脉宽调制信号以控制开关单元。
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公开(公告)号：US09967938B2
公开(公告)日：2018-05-08
申请号：US14740766
申请日：2015-06-16
Applicant: Lextar Electronics Corporation
Inventor： Po-Shen Chen , Chun-Jong Chang , Chien-Nan Yeh
CPC classification number: H05B33/0851 , H02J1/00 , H02M5/297 , H05B33/0818 , Y02B20/346
Abstract: A solid state light source device and a dimming circuit are provided. The dimming circuit includes a rectifier circuit, a switch unit, and a control unit. The rectifier circuit is configured to convert an AC voltage signal to a rectified voltage signal. The switch unit is electrically connected between the rectifier circuit and a lighting module and configured to undergo switching according to a pulse width modulation signal to connect or disconnect the rectifier circuit and the lighting module. The control unit is electrically connected to the switch unit and configured to generate the pulse width modulation signal to control the switch unit.
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公开(公告)号：US20170215245A1
公开(公告)日：2017-07-27
申请号：US15362203
申请日：2016-11-28
Applicant: Lextar Electronics Corporation
Inventor： Chien-Nan Yeh , Chun-Jong Chang , Po-Shen Chen , Jhao-Cyuan Huang
IPC: H05B33/08
CPC classification number: H05B33/0857
Abstract: A light-emitting device includes a dimmer, a rectifier, a first light-emitting module, a first controller, a second light-emitting module and a second controller. The dimmer is coupled to an alternating current for modulating the alternating current into an alternating signal. The rectifier couples the dimmer to the alternating current for rectifying the alternating signal into a direct current signal. The first light-emitting module is for emitting a first light with a first color temperature. The first controller is coupled to the first light-emitting module for controlling the first light-emitting module to emit the first light. The second light-emitting module is for emitting a second light with a second color temperature different from the first color temperature. The second controller coupled to the second light-emitting module for controlling the second light-emitting module to emit the second light.
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公开(公告)号：US20170202066A1
公开(公告)日：2017-07-13
申请号：US15339961
申请日：2016-11-01
Applicant: Lextar Electronics Corporation
Inventor： Chien-Nan Yeh , Chun-Jong Chang , Po-Shen Chen , Jhao-Cyuan Huang , Tzu-Hao Liu
CPC classification number: H05B33/0845 , F21V23/04 , F21Y2115/10 , H05B33/0815
Abstract: A dimming system includes a signal generating circuit, a first dimming circuit and a second dimming circuit. The signal generating circuit generates the driving signal according to the input signal, and switches the driving signal between multiple states according to the switch signal. The first dimming circuit generates the dimming signal to adjust the luminance of the LED device according to the driving signal. When the driving signal is switched from the first states to the second states, the dimming signal is changed by the first dimming circuit so that the luminance of the LED device is adjusted from the first luminance to the second luminance. The second dimming circuit adjusts the input signal according to the control signal so that the dimming signal is adjusted and the luminance of the LED device is between the first luminance and minimum luminance, or between the second luminance and minimum luminance.
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