CN103124459B - The light-dimming method of adjustable color and brightness and light modulating device and illuminator - Google Patents
The light-dimming method of adjustable color and brightness and light modulating device and illuminator Download PDFInfo
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- CN103124459B CN103124459B CN201310001483.2A CN201310001483A CN103124459B CN 103124459 B CN103124459 B CN 103124459B CN 201310001483 A CN201310001483 A CN 201310001483A CN 103124459 B CN103124459 B CN 103124459B
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Abstract
The present invention is light-dimming method and light modulating device and the illuminator of a kind of adjustable color and brightness, wherein light modulating device connects a lighting device, this light modulating device includes two Light modulating devices and a light modulation encoder, this two Light modulating device produces respectively dim signal according to user's adjustment, this light modulation encoder controls according to received dim signal brightness and the color that this lighting device presents, therefore, the present invention can reach as long as adjust this two Light modulating device the object of adjusting brightness and color for user.
Description
[technical field]
The present invention is a kind of illuminator, refers to especially the tune of adjustable color and brightnessLight method and light modulating device and illuminator.
[background technology]
Light modulator is the device that becomes known for adjusting lamp brightness, please refer to Fig. 7 instituteShow, light modulator can include a knob 40, and this knob 40 can be arranged on wallOn switch panel 41, this knob 40 is provided with a minimum point MIN and a peakMAX. This light modulator generally contains three-pole AC switch (TRIAC) or silicon control rectificationDevice (SCR), is used for adjusting the voltage waveform of exporting to a light fixture.
Please refer to shown in Fig. 8 A to Fig. 8 D, this light modulator is according to knob 40 placesPosition and adjust the voltage waveform of exporting to this light fixture, when the position of knob 40 isWhen high some MAX, the voltage waveform that light modulator is exported is that complete string ripple is (as figure8A), make this light fixture can present the brightest state; Along with knob 40 is toward minimum point MINDirection rotation, the voltage waveform of exporting when light modulator is during as Fig. 8 B, now light fixtureBrightness is 75% of original brightness; The voltage waveform of exporting when light modulator is as Fig. 8 CTime, now lamp brightness is original brightness 50%; The voltage of exporting when light modulatorWaveform is during as Fig. 8 D, and now lamp brightness is original brightness 25%. This knob 40System changes the angle of flow of voltage waveform, makes the brightness of this light fixture dimmed gradually.
Along with light fixture kind is more and more diversified, light fixture can present various colors and lookTemp effect, because known light modulator only can be adjusted brightness, for the color of light fixture withColour temperature cannot be adjusted; Therefore in order to adjust color and the colour temperature of light fixture, existing onePlant Multifunctional light-regulating controller, in order to adjust respectively brightness, color and the look of this light fixtureTemperature.
Please refer to shown in Fig. 9, this Multifunctional light-regulating controller includes a guidance panel50, in this guidance panel 50, include a plurality of setting keys 501～516, be respectivelyFive brightness settings keys 501～505, four colour temperature setting keys 506～509 and sevenColor setting key 510～516. Wherein, those brightness settings keys 501～505 respectivelyThe brightness of adjusting light fixture is 100%, 50%, 25%, 10% and 1%, those colour temperaturesThe colour temperature that setting key 506～509 is adjusted respectively light fixture is 5500K, 4000K, 3300KWith 2700K, the color that those color setting keys 510～516 are adjusted respectively light fixture isThe colors such as red, clear, yellow, green, blue, indigo, purple.
From the above, in this guidance panel 50, the quantity of setting key 501～516 is numerousMany, the step of its operation is numerous and diverse, and therefore Multifunctional light-regulating controller operates quiteNot directly perceived, user must study description or the guidance via technical professional carefullyJust can operate smoothly afterwards, therefore known light adjusting controller comes for userSay be not easy to use.
[summary of the invention]
Main purpose of the present invention is to provide the light modulation of a kind of adjustable color and brightnessMethod and light modulating device and illuminator, this illuminator has simple structure, allowsUser can adjust brightness and the color of illuminator easily, wherein adjustedColor comprises color and colour temperature, significantly improves and causes it because of complicated setting key structurePuzzlement in use.
Light-dimming method of the present invention includes following steps:
Receive the dim signal from Light modulating device;
Judge whether received dim signal is the first dim signal;
If this dim signal is not this first dim signal, judge this light modulation letterNumber be the second dim signal; And
Produce according to this received first dim signal or this second dim signalLight modulation code signal, and this light modulation code signal is become to a light modulation output with power supply modulationAfter power supply, by power line, this light modulation out-put supply is externally transferred to lighting device;Wherein, when this first dim signal uses as adjusting brightness, this second light modulation letterNumber as adjust color use, when this first dim signal as adjust color use,This second dim signal uses as adjusting brightness.
Light modulating device of the present invention is carried out aforesaid light-dimming method and is included:
One power input is for connecting an input power;
One rectification circuit, carries out rectification to this input power, and by output output oneOut-put supply;
At least two Light modulating devices, respectively according to the position between minimum point and peakPut and produce the first dim signal and the second dim signal;
One voltage perceptron, its input connects the output of this rectification circuit, and rootAccording to out-put supply size output one signal of this rectification circuit;
One light modulation encoder, is electrically connected this voltage perceptron and those Light modulating devices, andCarry out this light-dimming method, first and second tune being produced to receive those Light modulating devicesOptical signal and produce this light modulation code signal, and produce according to this voltage perceptronSignal and export this light modulation code signal;
One power switch switch, its input is electrically connected this rectification circuit and this light modulationEncoder, to become to include power supply by this out-put supply with this light modulation code signal modulationLight modulation out-put supply with light modulation code signal; And
One power supply and signal output part, for exporting this light modulation out-put supply.
Illuminator of the present invention has aforesaid light modulating device and further includesAt least one lighting device, this lighting device tool includes:
At least one luminescence unit;
One power supply and signal input part, defeated for the power supply and the signal that connect this light modulating deviceGo out end to receive this light modulation out-put supply;
One power supply unit is that to receive this light modulation via this power supply and signal input part defeatedGo out power supply, and produce accordingly a dc source, supply this lighting device required direct currentPower supply;
One electrical source exchange decoder is to receive this tune via this power supply and signal input partLight out-put supply, and capture the light modulation code signal in this light modulation out-put supply;
One control circuit is the light modulation coding capturing according to this electrical source exchange decoderSignal produces a control signal; And
One light source driving circuit, is electrically connected this power supply unit, this control circuit and is somebody's turn to doLuminescence unit, is to receive this dc source via this power supply unit, and according to this controlThe control signal that circuit processed is exported and to drive this luminescence unit to present specifically luminousVariation effect.
In sum, these two Light modulating devices are to operate for user, work as useWhen person adjusts Light modulating device, Light modulating device can produce dim signal, and this light modulating deviceCan be according to the dim signal of Light modulating device and the brightness of corresponding this lighting device of regulation and control withColor; Therefore for user, the element that user will operate only have this twoIndividual Light modulating device, with respect to prior art, the element that operate is significantly to subtractFew, be the burden effectively alleviating in use.
[brief description of the drawings]
Fig. 1: the use state reference map of illuminator of the present invention.
Fig. 2: the circuit block diagram of illuminator of the present invention.
Fig. 3: the circuit diagram of light modulating device in the present invention.
Fig. 4 A～4E: the voltage waveform view of light modulating device in the present invention.
Fig. 5: light-dimming method flow chart of the present invention.
Fig. 6: the circuit diagram of lighting device in the present invention.
Fig. 7: known switch panel schematic diagram.
Fig. 8 A～8D: the voltage oscillogram that known light modulator produces.
Fig. 9: the schematic diagram of known Multifunctional light-regulating encoder.
[main element symbol description]
10 light modulating device 100 power inputs
101 master switch 102 power supplys and signal output parts
103 switch panel 11 rectification circuits
12 power switch switch 13 voltage perceptrons
14 light modulation encoder 15 first Light modulating devices
16 second Light modulating device 20 lighting devices
200 power supplys and signal input part
21 power supply unit 210 bridge rectifiers
211 mu balanced circuit 22 light source driving circuits
24 electrical source exchange decoder 25 control circuits
26 luminescence unit 40 knobs
41 switch panel 50 guidance panels
501～505 brightness settings keys
506～509 colour temperature setting keys
510～516 color setting keys
[detailed description of the invention]
Please refer to shown in Fig. 1 and Fig. 2, the present invention's illuminator includes a light modulationDevice 10 and at least one lighting device 20.
This light modulating device 10 include a power input 100, a rectification circuit 11,At least two Light modulating devices 15,16, a voltage perceptron 13, a light modulation encoder14, a power switch switch 12 and a power supply and signal output part 102.
This power input 100 is that this input power can be for connecting an input powerThe AC power Vac that general civil power provides, its waveform can be with reference to shown in figure 4A. InIn this preferred embodiment, this power input 100 is plug-type, but the present invention is notOnly limit to this kind of power supply connecting interface, female type, line-outgoing type, power end minor such as,All applicable to the present invention.
This rectification circuit 11 carries out rectification to this input power, and is exported by outputOne out-put supply. In this preferred embodiment, this rectification circuit 11 is that a bridge-type is wholeStream device, its input system connects this power input 100, so that input power is carried outAfter rectification, export a full-wave direct current voltage Vp, this full-wave direct current voltage by outputThe waveform of Vp can be with reference to shown in figure 4B. Wherein, this rectification circuit 11 and this power supplyBetween input 100, can connect a master switch 101, in the time of this master switch 101 conducting,This light modulating device 10 just can use this AC power Vac.
Described Light modulating device 15,16 is for generation of dim signal, each Light modulating device 15,16 can be an adjustable passive device, for example variable resistor element, and numerical digit turn-knob is openedClose element (RotarySwitch) or touch control component etc.; In the present embodiment, include twoLight modulating device 15,16, is respectively one first Light modulating device 15 and one second light modulation unitPart 16, produces respectively one first dim signal and one second dim signal, to adjustThe brightness of this lighting device 20 and color. This first dim signal and the second light modulation letterNumber respectively in order to regulate and control brightness or the color of this lighting device 20, for instance, whenWhen the first dim signal is used for adjusting brightness, this second dim signal is used for adjusting faceLook; Or in the time that the first dim signal is used for adjusting color, this second dim signal is used forAdjust brightness, the color wherein adjusted includes color and colour temperature.
This Light modulating device 15,16 can be from knob, microscler plug-type, generally openThe various adjustable elements such as pass formula, touch switch formula, in this preferred embodiment, those tuneOptical element the 15, the 16th, taking the variable resistor element from knob as example, Light modulating device15,16 is according to user's adjustment operation and the resistance value size of change itself,And the resistance value of Light modulating device 15,16 is as dim signal. Please refer to shown in Fig. 1,This master switch 101 can be arranged on a switch panel 103 with Light modulating device 15,16On.
Each Light modulating device 15,16 is provided with a minimum point MIN and a peak MAX,The state system of this lighting device 20 adjusts arbitrarily according to the position of Light modulating device 15,16Whole, suppose that the position that minimum point MIN corresponds to Light modulating device 15,16 is 0%,To correspond to the position of Light modulating device 15,16 be 100% to peak MAX.
For instance, if the first Light modulating device 15 is for adjusting brightness, firstLight modulating device 15 represents that at 0% position Shi Ke lighting device 20 is for the darkest stateBe the brightest state at 100% interval scale lighting device 20, this lighting device 20 brightDegree can be along with the position of the first Light modulating device 15 between the darkest and the brightest stateAdjust arbitrarily. As can be seen here, user can directly adjust the first light modulation very intuitivelyThe position of element 15 and change the brightness of this lighting device 20.
In like manner, if the second Light modulating device 16 is for adjusting colour temperature, the second light modulationElement 16 represents colour temperature 2700K at 0% Shi Ke, and represents colour temperature at 100% Shi Ke6500K, the colour temperature of this lighting device 20 can be between 2700K and 6500K arbitrarilyAdjust, for example the second Light modulating device 16 is at 50% interval scale colour temperature 4000K, 90%Interval scale colour temperature 5000K; If the second Light modulating device 16 is for adjusting rgb color,The color of this lighting device 20 can be according to the second Light modulating device 16 and adjusting, and for example theTwo Light modulating devices 16 represent red at 0% Shi Ke, in 33% interval scale green,66% interval scale blueness, in 100% interval scale white.
This voltage perceptron 13, in the time that side circuit uses, can be used voltage comparatorOr the element such as photo-coupler detects the size of voltage, please refer to the voltage sense of Fig. 3Know that device 13 is to illustrate with voltage comparator element, this voltage perceptron 13 has twoInput and an output, one of them input connects this rectification circuit 11Output, and another input connects a reference voltage Vref. When this voltage perceptron13 receive this full-wave direct current voltage Vp, this voltage perception from this rectification circuit 11Device 13 the relative of this full-wave direct current voltage Vp and this reference voltage Vref of comparingSize, and according to the relative size of full-wave direct current voltage Vp and reference voltage Vref inOutput is exported a signal.
Please refer to shown in Fig. 4 B and 4C, suppose under civil power 110V system its electricityThe crest of pressure is 155V, now can by the reference voltage Vref of voltage perceptron 13Be set as 100V. In the one-period of this full-wave direct current voltage Vp, its magnitude of voltageBe to be incremented to peak value 155V from 0V, then be decremented to 0V from peak value 155V; When thisThe magnitude of voltage of full-wave direct current voltage Vp is greater than this reference voltage Vref, this voltage perceptionDevice 13 produces high potential (5V) in this output, when the voltage of full-wave direct current voltage VpValue is lower than this reference voltage Vref, and this voltage perceptron 13 produces low in this outputCurrent potential (0V); Therefore please refer to shown in Fig. 4 C, this voltage perceptron 13 defeatedGo out to hold the signal waveform of exporting to include high potential interval (as Z interval) and electronegative potentialInterval (as y interval), this high potential interval represents the electricity of this full-wave direct current voltage VpPressure value is greater than the Vref state of this reference voltage.
This light modulation encoder 14 is to produce according to those Light modulating devices 15,16Dim signal and produce a light modulation code signal Vs, and compare at this voltage perceptron 13In the time that high potential is interval, just externally export this light modulation code signal Vs compared with consequential signal, shouldLight modulation code signal Vs is brightness and the color for controlling this lighting device 20,Wherein the form of this light modulation code signal Vs can be the most general UART general non-withStep transceiving format, its waveform can be with reference to shown in figure 4D.
If this light modulation encoder 14 not at this compare result signal in high potential intervalTime just externally export this light modulation code signal Vs, may cause this light modulation coding letterNumber Vs failure. Its reason is, if not at this compare result signal in high potential districtBetween, can run into the state that full-wave direct current voltage Vp is 0V, now this light modulation codingThe light modulation code signal Vs that device 14 is produced in the time of modulation full-wave direct current voltage Vp,Output signal is all 0V, causes the loss of light modulation code signal Vs.
Please refer to the flow chart shown in Fig. 5, produce light modulation at this light modulation encoder 14In the process of code signal Vs, this light modulation encoder 14 can be from this first light modulation unitPart 15 or the second Light modulating device 16 receive dim signal, as step (31).
In the time that this light modulation encoder 14 receives dim signal, this light modulation encoder 14Judge whether received dim signal is the first dim signal, as step (32).
If so, this light modulation encoder 14 carries out modulation according to this first dim signalLight modulation code signal Vs is to adjust brightness, as step (33); If not, this light modulation is compiledCode device 14 assert that received dim signal is the second dim signal, as step(34)。
Assert dim signal when this light modulation encoder 14 is the second dim signal, this tuneOptical encoder 14 is according to this second dim signal and this light modulation code signal of modulation VsTo adjust color, as step (35).
This power switch switch 12 is to connect this light modulation encoder 14 and this rectified currentRoad 11, to receive respectively this full-wave direct current voltage Vp and this light modulation code signal Vs,And this full-wave direct current voltage Vp and this light modulation code signal Vs are integrated into a light modulationOut-put supply Vps, wherein the waveform of this light modulation out-put supply Vps can be with reference to figure 4EShown in.
This power switch switch 12 includes an electronic switch, and this electronic cutting is related to rootCarry out high-speed switch action according to this light modulation code signal Vs, straight to control this all-waveFlow voltage Vp conducting fast and close, this light modulation out-put supply Vps is includedThis light modulation code signal Vs. In aforementioned, this electronic switch can be selected from solid-state relay,P type field effect electric crystal (P-MOS), N-type field effect electric crystal (N-MOS), NPN electricityThe elements such as crystal, PNP electric crystal, IGBT, SCR, TRIAC one of them.Please refer to shown in Fig. 3, is to select N-type field effect electric crystal in the present invention's embodiment(N-MOS) as electronic switch.
This power supply and signal output part 102 be connect this power switch switch 12 andExport this light modulation out-put supply Vps. In this preferred embodiment, this power supply and signalOutput 102 is female type, connects Jie but the present invention also not only limits to this kind of power supplyFace, plug-type, line-outgoing type, power end minor such as, all applicable to the present invention.
Please refer to shown in Fig. 6, this lighting device 20 includes at least one luminescence unit26 and a tunable optical power circuit.
This luminescence unit 26 is subject to the control of this tunable optical power circuit and sends different ripplesThe light of length, as Red Green Blue light and mixed light thereof, also can be blue light and addsThe white light of the different-colour such as cold white light or warm white that yellow phosphor powder is sent. WhereinThis luminescence unit 26 can be general light-emittingdiode (LED), organic light emitting diodeOr PLED (PLED) (OLED).
This tunable optical power circuit includes a power supply and signal input part 200, an electricitySource supply 21, an electrical source exchange decoder 24, a control circuit 25 and a lightSource driving circuit 22.
This power supply and signal input part 200 can see through power line and be electrically connected to aforesaid electricitySource and signal output part 102, this power supply and signal input part 200 can be plug-type,Female type, line-outgoing type, power end minor, E27, E12, E14, E17, E26,E39, E40, MR11, MR16, GU10, B22, T5, T8, G24 etc. connectConnect interface one of them.
The input of this power supply unit 21 is electrically connected this power supply and signal input part200, and output is electrically connected this electrical source exchange decoder 24, this control circuit 25With this light source driving circuit 22. This power supply unit 21 is by this power supply and signalInput 200 and receive this light modulation out-put supply Vps from this light modulating device 10. ShouldPower supply unit 21 can be made up of bridge rectifier 210 and mu balanced circuit 211,To export steady direct-current working volts by this mu balanced circuit 211, and by this direct currentOperating voltage is supplied to this electrical source exchange decoder 24, this control circuit 25 and this lightSource driving circuit 22.
This electrical source exchange decoder 24 can be a photo-coupler or a signal isolatorDeng element composition, in the present invention's embodiment, be that to select photo-coupler be example explanation, shouldPhoto-coupler system receives this light modulation out-put supply via power supply and signal input part 200Vps, and capture the light modulation code signal Vs in this light modulation out-put supply Vps, andExport this light modulation code signal Vs by an output.
The input of this control circuit 25 connects the output of this electrical source exchange decoder 24End is to receive this light modulation code signal Vs, and this control circuit 25 is to compile according to this light modulationCoded signal Vs and produce a control signal.
This light source driving circuit 22 electrical connections this power supply unit 21 and this control circuit25, and be connected to this luminescence unit 26. This light source driving circuit 22 is from this power supplySupply 21 receives this dc source, and the control of exporting according to this control circuit 25Signal processed and drive this luminescence unit 26 to present specific variations in light effect.
In sum, the light modulation out-put supply producing according to this light modulating device 10Vps, because including light modulation code signal Vs in this light modulation out-put supply Vps, adjusts againLight code signal Vs produces according to the first dim signal and the second dim signal,Therefore can reach this luminescence unit 26 of adjustment by adjusting each Light modulating device 15,16Brightness and color effects.
Please refer to shown in Fig. 1 all configurable switch of each group lighting device 20Panel 103, this switch panel 103 is provided with this master switch 101, the first light modulation unitPart 15 and the second Light modulating device 16, this switch panel 103 can correspondingly be controlled a tuneElectro-optical device 10. User only must see through those Light modulating devices 15,16 just can reach controlMake flickering and color effects of this lighting device 20, use quite directly perceived and squareJust.
The present invention is accustomed to traditional shirtsleeve operation, reaches high-tech light modulation effectReally, allow people's life not be confined to bright and not work, but can utilize light modulation battalionMaking various delights of life and atmosphere, is really have industry applications, novelty and enterThe patent requirements such as step property, patent is filed an application in whence in accordance with the law mere formality.
Appended graphic reference and the explanation use of only providing of the present invention, is not used for to the present inventionLimitr in addition. Therefore such as use description of the present invention and the equivalence for it of diagramatic content instituteStructural change, is all in like manner contained in the present invention's scope, closes and gives Chen Ming.
Claims (9)
1. a light modulating device, includes:
One power input is for connecting an input power;
One rectification circuit, carries out rectification to this input power, and defeated by outputGo out an out-put supply;
At least two Light modulating devices, respectively according between minimum point and peakPosition and produce the first dim signal and the second dim signal;
One voltage perceptron, its input connects the output of this rectification circuit,And according to out-put supply size output one signal of this rectification circuit;
One light modulation encoder, is electrically connected this voltage perceptron and those light modulation unitsPart, and carry out this light-dimming method, with receive that those Light modulating devices are producedOne and second dim signal and produce this light modulation code signal, and according to this voltageThe signal that perceptron produces and export this light modulation code signal;
One power switch switch, its input is electrically connected this rectification circuit and is somebody's turn to doLight modulation encoder, to become bag by this out-put supply with this light modulation code signal modulationThe light modulation out-put supply that contains power supply and light modulation code signal; And
One power supply and signal output part, for exporting this light modulation out-put supply.
2. the light modulating device as described in right 1, is characterized in that this power supply inputBetween end and this rectification circuit, be connected a master switch.
3. the light modulating device as described in right 2, is characterized in that this Light modulating deviceSystem is selected from the adjustable of knob, microscler plug-type, switching regulator or touch switch formulaOne in element.
4. the light modulating device as described in right 1, is characterized in that this power switchSwitch system is selected from solid-state relay, P type field effect electric crystal, N-type field effect electricityCrystal, NPN electric crystal, PNP electric crystal, IGBT, SCR or TRIACIn one.
5. the light modulating device as described in right 1, is characterized in that this power supply inputThe specification system of end and power supply and signal output part is selected from female type, line-outgoing type, electricitySource minor one of them.
6. one kind has the photograph of light modulating device as described in any one in right 1 to 5Bright system, is characterized in that further comprising at least one lighting device, wherein shouldLighting device tool includes:
At least one luminescence unit;
One power supply and signal input part, for the power supply and the letter that connect this light modulating deviceNumber output is to receive this light modulation out-put supply;
One power supply unit is to receive this tune via this power supply and signal input partLight out-put supply, and produce accordingly a dc source, supply this lighting device instituteThe dc source of need;
One electrical source exchange decoder is to receive via this power supply and signal input partThis light modulation out-put supply, and capture the light modulation coding letter in this light modulation out-put supplyNumber;
One control circuit is the light modulation capturing according to this electrical source exchange decoderCode signal produces a control signal; And
One light source driving circuit, is electrically connected this power supply unit, this control circuitWith this luminescence unit, be to receive this dc source via this power supply unit, andThe control signal of exporting according to this control circuit drives this luminescence unit to beNow specific variations in light effect.
7. the illuminator as described in right 6, is characterized in that this luminescence unitSystem is selected from light-emittingdiode (LED), organic light emitting diode (OLED), high scoreSub-light-emittingdiode (PLED) one of them.
8. the illuminator as described in right 6 or 7, is characterized in that this power supplyAnd signal input part system be selected from female type, line-outgoing type, power end minor, E27,E12、E14、E17、E26、E39、E40、MR11、MR16、GU10、B22, T5, T8, G24 one of them.
9. the illuminator as described in right 6 or 7, is characterized in that this is luminousUnit is for the coloured light that sends different wave length.
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| CN103458585B (en) * | 2013-09-11 | 2015-07-01 | 北京汽车股份有限公司 | LED soft light bar control module and vehicle |
| CN104981052B (en) * | 2014-07-16 | 2018-02-27 | 厦门兴恒隆股份有限公司 | A kind of touch sensible constant-current dimming controller for LED light source |
| WO2016074512A1 (en) * | 2014-11-12 | 2016-05-19 | 常州市武进区半导体照明应用技术研究院 | Illumination control method, device, and system |
| TWI584677B (en) * | 2016-01-11 | 2017-05-21 | 隆達電子股份有限公司 | Led device, dimming system and dimming method thereof |
| CN108495419B (en) * | 2018-04-28 | 2024-05-14 | 深圳市晟碟半导体有限公司 | LED dimming circuit, dimming device and dimming method for reducing harmonic distortion |
| CN108834262A (en) * | 2018-07-23 | 2018-11-16 | 广州天通智能技术有限公司 | LED colour temperature-color adaptation device and method is realized based on single firewire |
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| US9101022B2 (en) * | 2008-01-25 | 2015-08-04 | Eveready Battery Company, Inc. | Lighting device having boost circuitry |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201434265Y (en) * | 2009-05-14 | 2010-03-31 | 智瀚电子股份有限公司 | Eye-protecting desk lamp |
| CN102378440A (en) * | 2010-08-23 | 2012-03-14 | 普诚科技股份有限公司 | Light dimming method using switch-type switch and related lighting system |
| CN102783254A (en) * | 2010-09-27 | 2012-11-14 | 三菱化学株式会社 | LED illumination appliance and LED illumination system |
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