HowtoIntegrateFocus-TunableLensesintoOpticalSystemsOptotuneFocus-TunableLensesareavailableinbothmanualandelectricaloptions.OptotuneManuallyFocus-TunableLensesarelenseswheretheusercanmanipulatethefocallengthandchangetheshapefromconvextoconcavebyrotatingtheouterring.OptotuneElectricallyFocus-TunableLensesareconvexlenseswithvariablefocallengths.Thesetunablelensescanreplacethefunctionalityofacompletelenskitinlaboratorysettings,offeringtheon-demandadaptabilityneededtoavoidthecomplexmechanicalmanipulationassociatedwithamulti-lenssystem.IdealforresearchersandOEMsalike,focus-tunablelensesoffercontinuousfocusabilityoveraspecificfocalrange,allowingtheusertocustom-tunethelensesforoptimumperformance.Specificapplicationsoffocus-tunablelensesincludelighting,laserprocessing,ophthalmology,machinevision,andmicroscopy.WhenpurchasinganOptotuneElectricallyorOptotuneManuallyFocus-TunableLens,itisimportanttoconsiderhowtointegratetheproductintoadesiredopticalsystem.Tomakethisprocessassimpleaspossible,considerconfigurationsformountingandintegrationintoZEMAX?opticaldesignsoftware.MOUNTINGCONFIGURATIONSThereareseveraloptionsformountingOptotuneElectricallyFocus-TunableLenses.Formodularmounting,use#57-977TECHSPEC?30mmT-MountAchromat/ThickLensMount.ThisopticalmountprovidesmaleandfemaleT-mountthreadstoeasilymountthetunablelenstoadditionalT-mountcomponents.Inaddition,30mmDiameterTECHSPECCageSystemPlatescanbeusedtocreateaentiresystemaroundthetunablelens.Itisimportanttokeepinmindthatifthetunablelensisembeddedintubing,itisnecessarytodrillaholetoconnectthewireleadstoaDCpowersupply.ADCpowersupplyisnotincludedwithOptotuneElectricallyFocus-TunableLenses.Itisrecommendedtopurchaseapowersupplywith0.1mAresolution,amaximumvoltageof5V,andcurrentof0.5A.Fornon-modularmounting,thereareseveralopticalmountstouse.#03-67640mmEnglishBar-TypeLens/FilterHolderor#55-53060mmMetricBar-TypeLens/FilterHolderoffersfixedmountingconfiguration.#64-563or#64-56430mmOpticComponentMountoffersasecureandfixedmountingconfiguration.Allmountscanbeattachedtoopticalbreadboardsorlaboratorytablesviapostsandpostholders.OptotuneManuallyFocus-TunableLensescannotbeintegratedintomodularmountingsystemsbecauseitisimportanttoallowthehousingtomove.Asaresult,use#03-676or#55-530Bar-TypeLens/FilterHolder.ZEMAX?INTEGRATIONOpeningFocus-TunableLensFilesEachfocus-tunablelensstocknumberincludesa.zipfolderwithsevenfilesthatcanbeeasilydownloadedfromtheproductpresentation(locatedundertheDocuments/Downloadstab).EachfilecontainsimportantinformationforintegratingthetunablelensintoZEMAX?.Table1:#83-919ManuallyFocus-TunableLensSampleFiles(ZIP320KB)FileNameDescriptionInstructionsforUseZemax.txtGeneralinstructionsforintegratingthetunablelensintoZEMAXML-20-35LensGeometry.pdfReferenceguidetothegeometricparametersofthelensOptotune_ML-20-35.zmxOpticallayoutthatsimulatesthelensinZEMAXOptotune_ML-20-35.sesCorrespondingsessionfileforML-20-35.zmxOptoshape4p3.dllLibraryfilethatdefinesthesurfaceshapesofthelensinZEMAX(32bitonly)OptoshapeV1p4_x64.dllLibraryfilethatdefinesthesurfaceshapesofthelensinZEMAX(64bitonly)OPTOTUNE_LENSMAT.AGFGlassmaterialcatalogforlensmaterial.OL1024isthelowdispersionmaterialusedinthelenses(n=1.3001,vd=100.18)PriortoopeningthetunablelensfileinZEMAX,itisimportanttocopytheDLLfiletotheDLL\SurfacesfolderoftheZEMAXinstalldirectory.ThisisfoundinZEMAX\DLL\Surfaces.A32bitanda64bitfileareincludedforbothtypesofsystems.TheDLLallowsthelensmaterialtobefoundandusedinZEMAX.InZEMAX,loadthesurfaceviathelensdataeditor.GotoSurfaceProperties:SurfaceType:UserDefinedSurfaceDLL:OptoshapeV4p3(Figure1).Figure1:LoadingtheFocus-TunableLensSurfaceviatheLensDataEditorinZEMAXThen,loadthelensfile.GotoFile:InsertLens.Choosethe.zmxfiletypefromthefolder.For#83-919,thisistitledOptotune_ML-20-35.zmx(Figure2).Figure2:OpeningtheFocus-TunableLensFileinZEMAXOncethefileisloadedinZEMAX,thefullprescriptioninformationwillbeaccessibleforopticalengineerstoincorporatethelensintotheiropticalsystems(Figure3).Figure3:ZEMAXPrescriptionfor#83-919Manually–FocusTunableLensUnderstandingFocus-TunableLensPrescriptionOncetheZEMAXlensprescriptionfileisopen,thereareseveralkeyspecificationstokeepinmind.Parameters1and2inthelensdataeditorcontrolthetunablelens(Figure3).Parameter1(denotedbyw0inFigures4-5)definesthecentraldeflectionofthelensvertexmeasuredfromthezero-deflectionstateinlensunits.Parameter2(denotedbyaThegeometricradius(ainFigures4-5)ofthetunablesurfacehastobehandleddifferentlythanthenormalsemi-diameteroftheZEMAXstandardsurface.Incontrasttothestandardsurface,wherethesemi-diameterisalooseconceptthatdefinestheopticallyusedradiusofthelens,theradius(a)ofthefocus-tunablesurfaceistherealgeometricradius:norayscanpassthefocus-tunablelensbeyondtheradius(a).Forthefocus-tunablelens,itisalwaysthelensvertexthatundergoesthedeflection,whilethedeflectionattheradius(a)[edge]remainszeroatalltimes[fixationpoint].UnliketheZEMAXdefinitionforstandardsurfaces,thesurfacethicknessvaluesforfocus-tunablelenssurfacesalwaysrefertotheconstantfixationpointattheedgeandnottothesurfacevertex.Figure4:LensGeometryofOptotuneManually-FocusTunableLensesFigure5:LensGeometryofOptotuneElectrically-FocusTunableLenses

Table2:TerminologyforOptotuneFocus-TunableLensGeometry

ManuallyFocus-TunableElectricallyFocus-TunableaRadiusofLensRadiusofLensb–RadiusofCoverGlassw0CentralDeflectionofLensCentralDeflectionofLenshVariableZoneofLensMaterialConstantZoneofLensMaterialkConstantDistanceofLensAttachment–dThicknessofCoverGlassThicknessofCoverGlasst–DistanceofCoverGlasstminMinimumThicknessofLens–Focus-tunablelensesoffercontinuousfocusabilityoveraspecificf