ISO 11315-2-1997 Photography - Projection in indoor rooms - Part 2 Screen luminance test for still and video projection《摄影 室内放影 第2部分 幻灯和视频放映银幕照度测试》.pdf
《ISO 11315-2-1997 Photography - Projection in indoor rooms - Part 2 Screen luminance test for still and video projection《摄影 室内放影 第2部分 幻灯和视频放映银幕照度测试》.pdf》由会员分享,可在线阅读,更多相关《ISO 11315-2-1997 Photography - Projection in indoor rooms - Part 2 Screen luminance test for still and video projection《摄影 室内放影 第2部分 幻灯和视频放映银幕照度测试》.pdf(12页珍藏版)》请在麦多课文档分享上搜索。
1、A Referencenumber ISO113152:1997 (E) INTERNATIONAL STANDARD ISO 113152 Firstedition 19971115 PhotographyProjectioninindoor rooms Part2: Screenluminancetestforstillandvideo projection PhotographieProjectionensalles Partie2:Essaideluminancedelcranpourpro jectionfixeetvidoISO113152:1997(E) ISO1997 Allr
2、ightsreserved.Unlessotherwisespecified,nopartofthispublicationmaybereproduced orutilizedinanyformorbyanymeans,electronicormechanical,includingphotocopyingand microfilm,withoutpermissioninwritingfromthepublisher. InternationalOrganizationforStandardization Casepostale56 CH1211Genve20 Switzerland Inte
3、rnet centraliso.ch X.400 c=ch;a=400net;p=iso;o=isocs;s=central PrintedinSwitzerland ii Foreword ISO(theInternationalOrganizationforStandardization)isaworldwide federationofnationalstandardsbodies(ISOmemberbodies).Theworkof preparingInternationalStandardsisnormallycarriedoutthroughISO technicalcommit
4、tees.Eachmemberbodyinterestedinasubjectforwhich atechnicalcommitteehasbeenestablishedhastherighttoberepresented onthatcommittee.Internationalorganizations,governmentalandnon governmental,inliaisonwithISO,alsotakepartinthework.ISO collaboratescloselywiththeInternationalElectrotechnicalCommission (IEC
5、)onallmattersofelectrotechnicalstandardization. DraftInternationalStandardsadoptedbythetechnicalcommitteesare circulatedtothememberbodiesforvoting.PublicationasanInternational Standardrequiresapprovalbyatleast75%ofthememberbodiescasting avote. InternationalStandardISO113152waspreparedbyTechnicalComm
6、ittee ISO/TC42, Photography. ISO 11315consistsofthefollowingparts,underthegeneraltitle PhotographyProjectioninindoorrooms : Part1:Screenilluminationtestforstillprojectors Part2:Screenluminancetestforstillandvideoprojection Part3:Projectionreflectingscreens Part 4:ReflectingprojectionscreensClassific
7、ationand measurementofreflectedscreenluminancelevelsandsound attenuation AnnexesAandBofthispartofISO11315areforinformationonly.INTERNATIONALSTANDARD ISO ISO113152:1997(E) 1 PhotographyProjectioninindoorrooms Part2: Screenluminancetestforstillandvideoprojection 1Scope ThispartofISO11315specifiestheme
8、asurementofscreenluminancelevel,asseenbya (seated)viewerforalltypesofpurelyopticalstillprojectionindarkenedprojectionrooms.Since theopticalcharacteristicsofthesurfaceofthisscreenhaveadirectbearingonluminance,the screenshallbeconsideredanintegralpartoftheprojectionsystemforthispartofISO11315. Astanda
9、rdizedlightmeasuringsystemallowscomparisonofscreenluminancevaluesfor differentprojectionsystemsusedalternatelyinpracticaluse. 2Normativereferences Thefollowingstandardscontainprovisionswhich,throughreferenceinthistext,constitute provisionsofthispartof11315.Atthetimeofpublication,theeditionsindicated
10、werevalid.All standardsaresubjecttorevision,andpartiestoagreementsbasedonthispartofISO11315 areencouragedtoinvestigatethepossibilityofapplyingthemostrecenteditionsofthe standardsindicatedbelow.MembersofIECandISOmaintainregistersofcurrentlyvalid InternationalStandards. ISO2910:1990, CinematographyScr
11、eenluminancefortheprojectionofmotion pictureprintsinindoortheatresandreviewrooms. ISO113151:1997, PhotographyProjectioninindoorroomsPart1:Screen illuminationtestforstillprojectors. CIENo.15.2:1986, Colorimetry(2ndedition). CIENo.69:1987, MethodsofCharacterizingIlluminanceMetersandLuminance MetersPer
12、formance,CharacteristicsandSpecifications.ISO113152:1997(E) ISO 2 3Definitions ForthepurposesofthispartofISO11315,thefollowingdefinitionsapply. 3.1luminance: Thequotientofthefluxleaving,arrivingatorpassingthroughanelementof surfaceandpropagatedindirectionsdefinedbyanelementaryconecontainingthegiven
13、directionbytheproductofsolidangleoftheconeandtheareaoftheorthogonalprojectionof theelementofsurfaceonaplaneperpendiculartothegivendirection. CIEPubl.No.17 3.2screen: Alightreflectingorlighttransmittingsurfacewithdefinedopticalpropertiesforthe purposeofprojection.InthispartofISO11315,screenmeansthesc
14、reenpictureareaofthe completeinstalledprojectionscreenonlyappropriatetotheprintformat(slide)andprojection systeminuse. 3.3theatricalprojection: Anindoorpublicprojectionsystem(e.g.inmultipurposehalls, auditoriumsofuniversities,cinemas,etc.) 3.4viewingarea: Alimitedareaforthepreferablyseatedviewers.It
15、allowsgoodviewing conditionsindependentoftherelativedimensionsoftheprojectionscreenarea.(SeeannexA, A.5.) 3.5stillprojection: Allprojectionmethodswithoneormoreprojectorsforslides,overhead projectiontransparencies,episcopicpicturesforprojectionandtransparentLCDs. 3.6uniformityratio, g 2 : Theratiooft
16、helowestmeasuredilluminance/luminancetothehighest measuredilluminance/luminance,e.g. L min /L max (x100in%). CIEPubl.No.17 4Testmethodfordeterminingthescreenluminance Thedistributionofluminanceoverthescreensurfacefromacompleteprojectioninstallation (i.e.includingprojectorandscreeninaprojectionroom)i
17、sinfluencedbyimpinginglight generatedbytheprojector(not byroomlighting),andthepropertiesofthescreen. Theluminancetowardstheviewingareaisdirectlydependentontheangleofthereflected(or transmitted)lightbythescreensurfaceaswellasontheviewingposition.Itisexpressedasa curvebytheluminancefactorindicatrix(se
18、enotebelow).Toachievethis,theluminance distributionshallbedeterminedatthreetestpoints(seefigure1)forthreeselectedviewing positions. NOTETheluminancefactorindicatrixwillbecoveredinISO113154whichisbeingprepared.ISO ISO113152:1997(E) 3 Key w Widthoftheprojectedimage h Heightoftheprojectedimage NOTEThef
19、inallocationofrelevanttestpointsisdeterminedbythescreenratioactuallyusedduringprojection. Figure1Locationofthetestpoints(123)onthescreen Luminanceshallbemeasuredfromthreepositionsofthemeasuringdeviceintheviewingarea (seefigure2,BAC)tothreetestpoints(123)onthescreen. 5Measurementofscreenluminance 5.1
20、Preconditioning Thepreparationprocedureshallbethesameasforthemeasurementofscreenillumination accordingtoISO113151:1997,subclause4.1. 5.2Measuringdevice Thescreenluminanceshallbemeasuredwithaluminancemeterhavingarecommendedfield anglenotgreaterthan1,5andthespectralsensitivityofaStandardColorimetricOb
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