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Household led lighting knowledge comprehensive analysis

HouseholdledlightingknowledgecomprehensiveanalysisWithledlightingbegantoentertheuniversalera,moreandmoreconsumerswanttousehomeledlightingknowledgehasenoughunderstanding.Today,withXiaobianlookatthehomeledlightingknowledgeofacomprehensiveanalysis,foreveryonetorefertoOh.LEDlightingknowledge-basicknowledgeLEDsemiconductorlight-emittingdevicesincludesemiconductorlight-emittingdiode(referredtoasLED),digitaltube,symboltube,metertubeanddotmatrixdisplay(referredtoasmatrixtube)andsoon.Infact,eachofthelight-emittingunitsinthedigitaltube,thesymboltube,themetertubeandthematrixtubeisalight-emittingdiode.Ledlightingknowledge-ledlightsourcewiththecharacteristics1,lesspowerconsumption:lighteffectof75Lm/WLEDbrightnessoftheincandescentlamptoreducethepowerconsumptionby80%;2,longlife:productlifeupto50000h,24hourscontinuouslightavailablefor7years;3,nanosecondresponsespeed,sothatthebrightnessandcolorofthedynamiccontroleasier,canachievethedynamicchangesincoloranddigitalcontrol;4,thedesignoflargespace:andthebuildingcanbeorganicallyintegrated,toseethelightdidnotseetheeffectoflight.5,environmentalprotection:noharmfulmetalmercury,noinfraredandultravioletradiation.6,color:differentwavelengthsproducedifferentcolorlight,brightsaturation,nofilter,red,greenandbluecanbeusedtocontroltheformationofthreedifferentcolors,andtoachievefullcolor,gradientandothercoloreffects.Ledlightingknowledge-ledFeatures:LEDlightingisagreenlightsource:lowoperatingvoltage,lowpowerconsumption;stableperformance,longlife(usually100,000hours),theresponsetimeisshort,nopollutiontotheenvironment.Althoughthepriceismoreexpensivethantheexistinglightingequipment,butstillconsideredtoinevitablyreplacetheexistinglightingdevices.Ledlightingknowledge-chooseanimportantreferencelightled1,thespectralcomponentsshouldbenoultravioletlightandinfraredlight.Longtimetoomuchtoacceptultravioletlight,notonlyeasytocausekeratitis,butalsoonthelens,retina,choroidandotherinjuries.Infraredcaneasilybeabsorbedbywater,toomuchinfraredthroughthehumaneyelensaggregationisalargenumberofabsorption,overtimethelenswillbedegeneration,leadingtocataracts.2,lightcolortemperatureshouldbeclosetonaturallight.Peoplelonglifeinthenaturallight,thehumaneyeonthenaturallightadaptability,visualeffects.3,noelectromagneticradiation,topreventradiationpollutiontoprotectthebrain.Itcanprovideacomfortablelightingspace,butalsoverygoodtomeetthephysicalhealthneedsofpeople,isahealthyandhealthylightsource.Long-termusecanprotecteyesight,preventmyopia.4,zerostrobe,willnotmaketheeyesproducefatigue.Ordinaryfluorescentlamppowersupplyfrequencyof50Hz,indicatingthatwhenthelightandlighteverytimebrightanddark100times,belongingtothelowfrequencyofstrobelight,willmakethehumaneyeregulatoryorgansinatightstateofregulation,resultinginvisualfatigue.Ifthefrequencyoflightwhentheincreasetohundreds,tensofthousandsofhertzabove-tobecomehighfrequency,thehumaneyethatwillnothavethefeelingofstrobe;buttherealnon-strobeisDCpowersupplyorsemiconductorsolid-statelight-emittingdevices(suchasLEDlight-emittingdiode)Thelightemittediscallednoflicker.
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2016-12

The most basic LED energy saving lamp basic knowledge universal household lighting

发布时间 : 2016-12--27 点击量 : 3
Nowhomedecoration,LEDisnowpeopleusemostofthehomelights,itisakindofelectricalenergycanbeconvertedintolightenergyelectronicdeviceswiththecharacteristicsofthediode.Atpresent,differentlight-emittingdiodescanemitlightfromdifferentwavelengthsofinfraredtoblue,thecurrentissueofpurpleandultravioletlighthasalsobeenthebirthoflight-emittingdiodes.InadditiontotheblueLEDcoatedwithphosphor,thebluelightintowhitelightwhiteLED.LEDcolorandtechnology:TheLEDismadeofdifferentmaterials,canproducephotonswithdifferentenergies,whichcancontroltheLEDemittedbythewavelengthoflight,thatis,thespectrumorcolor.ThefirstLEDusedinthehistoryofthematerialisarsenic(As)gallium(Ga),thepositivePNjunctionpressuredrop(VF,canbeunderstoodaslitorworkingvoltage)is1.424V,thelightemittedfortheinfraredspectrumTheAnothercommonlyusedLEDmaterialforthephosphorus(P)gallium(Ga),thepositivePNjunctionvoltagedropof2.261V,thelightisgreen.Basedonthesetwomaterials,theearlyLEDindustryusesGaAs1-xPxmaterialstructure,theoreticallycanproducefrominfraredlighttoanywavelengthwithinthegreenlightoftheLED,thesubscriptXrepresentsthephosphoruselementtoreplacethepercentageofarsenicelements.GenerallythroughthePNjunctionvoltagedropcandeterminethewavelengthofLEDcolor.WhichtypicallyGaAs0.6P0.4redLED,GaAs0.35P0.65orangeLED,GaAs0.14P0.86yellowLEDandsoon.Asaresultofthemanufactureofgallium,arsenic,phosphorusthreeelements,socommonlyknownasthesethreeelementsLEDtube.TheGaN(galliumnitride),GaPgreenLEDandGaAsinfraredlightLED,knownasthetwo-elementLED.Thelatesttechnologyisafour-elementLEDmadeofAlGaInN,amixtureofaluminum(Al),calcium(Ca),indium(In)andnitrogen(N),whichcoversallvisibleandpartialUVThespectralrangeoflight.LEDluminousintensity:Luminousintensityunit(candlelightCandlepower)1CD(candlelight)referstothecompleteradiationoftheobject,intheplatinumfreezingpointtemperature,everysixtiethofthelightoftheunit,theluminousintensityunit(lumensLumen)Squarecmareaof​​theluminousintensity.(Inthepastreferstoadiameterof2.2cm,75.5gramsofwhaleoilcandles,burning7.78gramsperhour,theflameheightof4.5cm,alongthehorizontaldirectionoftheluminousintensity)1L(lumens)means1CDcandlelightatadistanceof1cm,Theareaof​​1squarecentimeterontheplaneoftheluminousflux.1Lux(lux)refersto1Loftheluminousfluxevenlydistributedintheareaof​​1squaremetersofillumination.GeneralactiveluminousbodywithluminousintensityunitcandlelightCD,suchasincandescentlamp,etc.;reflectiveorpenetratingtypeofobjectusingluminousfluxunitLumensL,suchasLCDprojector,etc.;andilluminationunitLuxLuxLux,generallyusedforphotographyandotherfields.Thethreeunitsofmeasurearenumericallyequivalent,butneedtobeunderstoodfromdifferentperspectives.Forexample,ifanLCDprojectorhasabrightness(luminousflux)of1600lumens,itsprojectedtoafullreflectionscreensizeof60inches(1squaremeter),theilluminationof1600lux,assumingitsoutputfromthelightsource1Cm,theopticalportareaof​​1squarecentimeter,thentheopticalportoftheluminousintensityof1600CD.TherealLCDprojectorduetothelossoflighttransmission,reflectionorlighttransmissionfilmlossandunevenlightdistribution,brightnesswillbegreatlyreduced,generally50%efficiencyisverygood.Inactualuse,theintensitycalculationisoftenusedinrelativelyeasymappingofdataunitsorchangetouse.FortheLEDdisplayThisactiveluminousbodyisgenerallyusedCD/squaremetersastheluminousintensityunit,andwiththeobservationanglefortheauxiliaryparameters,whichisequivalenttothesurfaceofthescreenunitilluminationunitlux;thisvalueandthescreeneffectivedisplayareaMultiplytoobtaintheluminousintensityoftheentirescreenatthebestviewingangle,assumingthattheluminousintensityofeachpixelinthepanelisconstantwithinthecorrespondingspace,thisvaluecanbeconsideredastheluminousfluxoftheentirescreen.Thegeneraloutdoortobemorethan4000CD/squaremetersofbrightnessinthesuncanhaveabetterdisplay.OrdinaryindoorLED,themaximumbrightnessof700~2000CD/squaremeters.TheluminousintensityofasingleLEDisinCDunits:Atthesametimewithaviewingangleparameters,luminousintensityandLEDcolordoesnotmatter.TheluminousintensityofasingletuberangesfromseveralmCDtofivethousandmCD.LEDmanufacturersgiventheluminousintensityofLEDlightinthe20mAlight,thebestviewingangleandthecentrallocationoftheluminousintensityofthelargestpoint.TheshapeofthetoplenswhentheLEDisencapsulatedandthepositionoftheLEDchipfromthetoplensdeterminestheLEDviewingangleandlightintensitydistribution.Generallyspeaking,thelargertheLEDviewingangleis,thesmallerthemaximumluminousintensityis,buttheaccumulatedluminousfluxonthewholethree-dimensionalhemispheredoesnotchange.Whenanumberofmoretightlydistributed,theluminoussphericalobjectsaresuperimposedoneachother,resultingintheuniformdistributionoftheluminousintensitydistributionoftheentireluminousplane.Incalculatingtheluminousintensityofthedisplay,accordingtotheLEDviewingangleandLEDdischargedensity,themanufacturerwillprovidethemaximumluminousintensityvaluemultipliedby30%to90%range,astheaveragesingle-tubeluminousintensity.LEDluminouslifeisverylong:Manufacturersaregenerallymarkedas100,000hoursormore,theactualshouldalsopayattentiontotheLEDbrightnessattenu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