High-Powered LED Illumination System LEX2 - SciMedia

LEX2 is a new LED illumination system using a high-powered LED chip. It has been designed to offer brighter and more stable lighting than the previous LED ... SkiptoNavigation SkiptoMainContents NeuronalImaging CardiacImaging GeneralPurposeHighSpeedImaging OtherEquipment Support Top OtherEquipment High-PoweredLEDIlluminationSystem LEX2isanewLEDilluminationsystemusingahigh-poweredLEDchip.IthasbeendesignedtoofferbrighterandmorestablelightingthanthepreviousLEDsystem.Therearetwomodelsavailable:blue(peak:465nm)andgreen(peak:530nm). LEX2featuresahigh-poweredLEDchipandoriginalfeedbackmechanismformaintainingstablelightintensity.ItisourbestLEDsystemintermsofbrightnessandstability,resultinginverygoodsignaltonoiseratios. LEX2canbeusedformanybiologicalapplications.ItcanbeusedwithMiCAMhighspeedimagingsystemsasanexcitationlightsourcefordetectingfluorescentsignals,orasalightstimulatorforcellsthatexpresslight-activatedproteinsinelectrophysiologicalexperiments. HighPower LEX2consistsofahigh-poweredLEDchip,whichproducesalightintensityover150mW/cm2.Theintensitycanbesimplyadjustedwithcoarse/finedialsonthefrontpanelintherangebetween0and150%(100%to150%intensitycanbeusedforshort-pulseilluminationlastinglessthan1second). HighStabilityofLightIntensitythroughFeed-BackMechanism Theintensityismorestablethanhalogenlampsanddoesnotproduceanyflickerorlargearcfluctuations,incomparisontoXenonandMercurylightsources.LEDsareanidealilluminationsourceforhighspeedimaging.However,lightintensityofLEDstendstodecreasewhenturnedonforlongperiodsoftime,duetotheheatofLEDchips.Tokeeplightintensityconstant,LEX2adoptsanoriginalfeedbacktechnology.Thisfeedbackmechanismresultsinlessthan0.1%driftwithin30secondsat50%intensity. SynchronizedIlluminationwithExternalSignal ThelightcanbeturnedON/OFFbysignalsfromexternaldevicessuchasMiCAMhighspeedimagingsystemsorpulsegenerators.Bysendingapulsegreaterthan1.5VthroughaBNCconnectortothefrontpanelofMiCAMhighspeedimagingsystems,thelightcanbeactivated.LEX2doesnotuseanymechanicalshutter,sothereisnonoisecausedbyvibrationorsound. AdjustmentofthelightintensitybyExternalsignal Lightintensitycanbecontrolledbyanalogvoltagesignalfromexternaldevice.3.3Vvoltageinputcanset100%lightintensity. Monitorfunctionforlightintensitysetting LEDintensityadjustmentcontrolcanbemonitoredthroughaBNCconnector.At100%intensitysetting,outputtedvoltageis3.3V. ExcitationlightsourceforMiCAMhighspeedfluorescenceimagingsystemsusingindicatorsincludingvoltage-sensitivedyes,calciumindicators,andgeneticallyencodedopticalprobessuchasvoltage-sensitiveproteins. Lightsourceforstimulationtolight-activatedproteinsuchaschannelrhodopsin2(ChR2)andhalorhodopsion(NpHR). Otherimagingapplicationsrequiringstableandbrightlight. Item LEX2-LZ4-B(New) LEX2-G CenterWavelength 465nm 530nm LEDintensityat100%setting(*1) 400mW/cm2 150mW/cm2 LEDintensityat150%setting(*1) 600mW/cm2 180mW/cm2 LightFluctuation(*2)