应用LightTools的投影机设计

3280EastFoothillBoulevardPasadena,California91107USA(626)795-9101Fax[phone]e-mail:[e-mail]:ProjectorDesignUsingLightTools,Slide‹#›Overview•Projectortechnology(abriefintroduction)•ModelingsourcesandreflectorsforlightenginesinLightTools•ModelingtheuniquecomponentsforlightenginesinLightTools–LCD&DMD–Fly’seyearray–IntegratingRods–X-Prism–Dichroicfilters•UsingthegraphicaloutputofLightTools•Understandingtheuniqueanalysisnecessaryfordigitalprojectors•WorkshopsProjectorDesignUsingLightTools,Slide‹#›ProjectionIlluminationTechnologyProjectorDesignUsingLightTools,Slide‹#›WhatisaProjector?•Usedmainlytodisplayinformationfromacomputerortelevisionsignaltoalargeareaorscreen•PopulartechnologiesincludeLCD(LiquidCrystalDisplay),DMD(DigitalMicromirrorDevice),orLCoS(LiquidCrystalonSilicon)•Somearepolarization-dependentdevices•Spatialuniformity,luminance,colormixing,coloruniformity,andcontrastareimportantissues•TypicallyusedwithashortarclampProjectorDesignUsingLightTools,Slide‹#›KöhlerIlluminationSystem•Entrancepupilfillandsizeofilluminationaretiedtogether•Objectisuniformlyilluminated•LampisimagedtoentrancepupilofprojectionlensAisaconjugateplanetotheprojectionlensentrancepupil,A'Bisaconjugateplanetothescreen,B'-imageplaneofprojectionlensABA'B'ObjectPlaneProjectionLensEntrancePupilIrisLampProjectorDesignUsingLightTools,Slide‹#›KöhlerIlluminationSystemwithIntermediateImage•Entrancepupilfillisvariable•Sizeofilluminationisvariable•Entrancepupilfillandsizeofilluminationareindependent•Objectisuniformlyilluminated•LampisimagedtoentrancepupilofprojectionlensAA'areconjugateplanestotheprojectionlensentrancepupil,ABB'areconjugateplanestothescreen,B-imageplaneofprojectionlensABA'B'ABIris:controlssizeofilluminationIris:controlspupilfillObjectplaneProjectionLensEntrancePupilLampProjectorDesignUsingLightTools,Slide‹#›AbbeIlluminationSystem•Entrancepupilfillandsizeofilluminationarefixed•Objectisnon-uniformlyilluminated•LampisimagedtoscreenAA'areconjugateplanestothescreen,A-imageplaneofprojectionlensBisaconjugateplanetotheprojectionlensentrancepupil,B'ABA'B'AIrisProjectionLensEntrancePupilObjectplaneLampProjectorDesignUsingLightTools,Slide‹#›IlluminatorSummaryAbbeKöhlerKöhlerw/ImageUniformIllumination@ObjectNoYesYesEntrancePupilSizeControlNoYesNoIlluminationSizeControlNoYesNoShortOpticalLengthYesNoYesProjectorDesignUsingLightTools,Slide‹#›Example:LCDLightEngineFly’sEyePolarizerDichroicMirrorsLCDs&PolarizerLCDs&PolarizerX-PrismProjectionLensReflector/SourceProjectorDesignUsingLightTools,Slide‹#›CriticalComponentsofLCDLightEngine•Fly’seyelensarray•Polarizationraytracingandelements–Polarizers–LCD•Dichroicopticalcoatings•X-PrismassemblyProjectorDesignUsingLightTools,Slide‹#›Example:DMDLightEngineReflector/SourceColorWheelIR/UVFilterIntegratingRodDMDProjectionLensCondenserOpticsProjectorDesignUsingLightTools,Slide‹#›CriticalComponentsofDMDLightEngine•DMDDevice•IntegratingRod•UVFilters•ColorWheelProjectorDesignUsingLightTools,Slide‹#›Example:LCoSLightEngineReflector/LampIR/UVFilterIntegratingRodCondenserFly’sEyeArrayFieldLensCoating:TransmitGreenP,RedS,&BlueSBlueLCoSRedLCoSBeamSplitter:ReflectsRedandBlue,TransmitsGreenHalfWavePlateCoating:TransmitsRedPandBlueSBeamSplitter:TransmitRedSandBlueP,ReflectRedPandBlueSGreenLCoSBeamSplitter:ReflectsGreenP,TransmitsGreenSHalfWavePlateProjectionLensBeamSplitter:ReflectS,TransmitPProjectorDesignUsingLightTools,Slide‹#›CriticalComponentsofLCoSLightEngine•Polarization-dependentdevices–Halfwaveplate–LCoSModulator–OpticalCoatings•IntegratingRod•Fly’sEyeLensArrayProjectorDesignUsingLightTools,Slide‹#›ModelingtheCriticalComponentsofLightEnginesinLightToolsProjectorDesignUsingLightTools,Slide‹#›Example:LCDLightEngineFly’sEyePolarizerDichroicMirrorsLCDs&PolarizerLCDs&PolarizerX-PrismProjectionLensReflector/SourceProjectorDesignUsingLightTools,Slide‹#›CriticalComponentsofLCDLightEngine•Fly’seyelensarray•Polarizationraytracingandelements–Polarizers–LCD•Dichroicopticalcoatings•X-PrismassemblyProjectorDesignUsingLightTools,Slide‹#›LCDLightEngineFly’sEyeLensArray•WhatisaFly’sEyeLensArray?–Sometimescalledanintegrator,itisaregularpatternofsmalllensesusedto“mix”upthelighttocreateauniformdistribution–Effectivelycreatesmultipleimagesofthesourceontopofoneanother•InLightToolstherearetwoprimarywaystomodelFly’sEyeArray–Createonelensofthefly’seyeandusethearrayfeaturetoreplicate–Adda3Dsphericaltexturetothesurfaceofaflatplate•AFly’seyecanbeasinglelensarrayortwotandemlensarraysProjectorDesignUsingLightTools,Slide‹#›SingleLensArrayProjectorDesignUsingLightTools,Slide‹#›LCDLightEngine-SingleLensArrayExamplePatternsHexagonalSquareRectangularTwoRadiiSpiralToroidalPolarGridVariableRadiiProjectorDesignUsingLightTools,Slide‹#›LCDLightEngine-SingleLensArrayCreatingaLensArray•Createalens•Usethearrayfeaturetocopythelensinarectangulargrid•UnionallofthelensestogetherifasinglepartStep1–CreateLensStep2–SelectArrayStep3–Specifyorigin,numberof