Basic Display Measurements and Color Engineering

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1、Chapter2BasicDisplayMeasurementsandColorEngineeringSpeaker:馮世維助理教授高雄大學應用物理系E-mail:swfeng@nuk.edu.twOutline1.BasicDisplayMeasurements2.GeometricPropertiesofLight3.HumanEye4.Vision&Color5.QuantifyColor6.Radiometry7.Photometry8.Contrast9.ResolutionBasicDisplayMeasurementsDisplaytechnologyisaveryi

2、nterdisciplinaryscience,combiningbasicprinciplesfromallthesciencesandengineering,andinaddition,humanphysiology.Threebasicconceptsshouldberememberedwhenworkingwithlightmeasurementanddisplays-spectral,spatialandtemporal.SpectralCharacteristics:Thespectral,orcolorconsiderationiscloselyrelatedtoth

3、efrequencybandpasscharacteristicsofdevicesandsystemsinelectronics.Initiallyonemustdecideifthespectralcharacteristicsaretobeconsideredforthehumaneye(photometry)orpower(radiometry).BasicDisplayMeasurementsSpatialCharacteristics:Thespatialcharacteristicsaregeometricconsiderationsaffectingemission

4、,reflection,absorption,transmission,andsensinglight.TemporalCharacteristics:Temporalconsiderationsaretimerelated.Analogoustoelectronicdevices,opticaldeviceshaverisetimesandfalltimesandfrequencybandwidthsassociatedwiththem.ElectromagneticSpectrum:Theelectromagneticspectrumdepictstherangeofelect

5、romagneticradiation.Theregionidentifiedasphotometrycorrespondingtothevisiblespectrum-thisistherangewherethehumaneyeissensitive.Outline1.BasicDisplayMeasurements2.GeometricPropertiesofLight3.HumanEye4.Vision&Color5.QuantifyColor6.Radiometry7.Photometry8.Contrast9.ResolutionInteractionsofLightwi

6、thMaterialsAbeamoflightpassingthroughablockofapartlytransparentmaterial–Transmission–Reflection–Absorption–ScatteringRefraction•Refraction:Whenlightstrikesonaninterfacebetweentwomaterialwithdifferentrefractiveindices,lightchangeitsspeed.–Refractiveindexspeedoflightinavacuumcn==speedoflightinth

7、ematerialv•Snell’slaw:nsinθ=nsinθ1122•Reflectionoccurswheneverthereisachangeinn.DispersionDispersion:Thedependenceoftheindexofrefractiononwavelength.Beer-Lamber’sLaw•Bouguer-Lamber’slaw:Thetransmittanceofahomogeneousmaterial,aftercorrec