BS ISO 19741 2025.docx

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1、BSISO19741:2025OpticsandphotonicsOpticalmaterialsandcomponentsTestmethodforstriaeininfraredopticalmaterialsbsiNationalforewordThisBritishStandardistheUKimplementationofISO19741:2025.ItsupersedesBSISO19741:2018,whichiswithdrawn.TheUKparticipationinitspreparationwasentrustedtoTechnicalCommitteeCPW/172

2、,OpticsandPhotonics.Alistoforganizationsrepresentedonthiscommitteecanbeobtainedonrequesttoitscommitteemanager.ContractualandlegalconsiderationsThispublicationhasbeenpreparedingoodfaith,howevernorepresentation,warranty,assuranceorundertaking(expressorimplied)isorwillbemade,andnoresponsibilityorliabil

3、ityisorwillbeacceptedbyBSIinrelationtotheadequacy,accuracy,completenessorreasonablenessofthispublication.Allandanysuchresponsibilityandliabilityisexpresslydisclaimedtothefullextentpermittedbythelaw.Thispublicationisprovidedasis,andistobeusedattherecipientsownrisk.Therecipientisadvisedtoconsiderseeki

4、ngprofessionalguidancewithrespecttoitsuseofthispublication.Thispublicationisnotintendedtoconstituteacontract.Usersareresponsibleforitscorrectapplication.TheBritishStandardsInstitution2025PublishedbyBSIStandardsLimited2025ISBN9780539324112ICS37.020CompliancewithaBritishStandardcannotconferimmunityfro

5、mlegalobligations.ThisBritishStandardwaspublishedundertheauthorityoftheStandardsPolicyandStrategyCommitteeon31May2025.Amendments/corrigendaissuedsincepublicationDateTextaffectedISOInternationalStandardISO19741Secondedition2025-05OpticsandphotonicsOpticalmaterialsandcomponentsTestmethodforstriaeininf

6、raredopticalmaterialsOptiqueetphotoniqueMateriauxetComposantsoptiquesMethodesdessaipourdeterminerlesstriesdesmatehauxoptiquesinfrarougesReferencenumberISO19741:2025(en)COPYRIGHTPROTECTEDDOCUMENTISO2025Allrightsreserved.Unlessotherwisespecified,orrequiredinthecontextofitsimplementation,nopartofthispu

7、blicationmaybereproducedorutilizedotherwiseinanyformorbyanymeans,electronicormechanical,includingphotocopying,orpostingontheinternetoranintranet,withoutpriorwrittenpermission.PermissioncanberequestedfromeitherISOattheaddressbeloworISO,smemberbodyinthecountryoftherequester.ISOcopyrightofficeCP401Ch.d

8、eBlandonnet8CH-1214Vernier,GenevaPhone:+41227490111Email:copyrightiso.orgWebsite:www.iso.orgPublishedinSwitzerlandContentsPageForewordiv1 Scope12 Normativereferences13 Termsanddefinitions14 Principle15 Apparatus25.1 Apparatusarrangement25.2 Collimatinginfraredlightsourcesystem25.3 Projectionopticals

9、ystem25.4 Knifeedgedevice35.5 Imagesensor35.6 Computerimagecollecting,processinganddisplayingsystem35.7 Standardgreylevelsample36 Testconditions36.1 Environmentaltemperature36.2 Relativeairhumidity37 Sample37.1 Surfaceroughness37.2 Scratchesanddigsofsurface38 Procedure48.1 Projectionmeasurement48.2

10、Schlierenmeasurement49 Dataprocessing510 Testreport5AnnexA(informative)Testrecordforstriaeininfraredopticalmaterials6Bibliography7ForewordISO(theInternationalOrganizationforStandardization)isaworldwidefederationofnationalstandardsbodies(ISOmemberbodies).TheworkofpreparingInternationalStandardsisnorm

11、allycarriedoutthroughISOtechnicalcommittees.Eachmemberbodyinterestedinasubjectforwhichatechnicalcommitteehasbeenestablishedhastherighttoberepresentedonthatcommittee.Internationalorganizations,governmentalandnon-governmentabinliaisonwithISO,alsotakepartinthework.ISOcollaboratescloselywiththeInternati

12、onalElectrotechnicalCommission(IEC)onallmattersofelectrotechnicalstandardization.TheproceduresusedtodevelopthisdocumentandthoseintendedforitsfurthermaintenancearedescribedintheISO/IECDirectives,Part1.Inparticular,thedifferentapprovalcriterianeededforthedifferenttypesofISOdocumentshouldbenoted.Thisdo

13、cumentwasdraftedinaccordancewiththeeditorialrulesoftheISO/IECDirectives,Part2(seewww.iso.org/directives).ISOdrawsattentiontothepossibilitythattheimplementationofthisdocumentmayinvolvetheuseof（八）patent(三).ISOtakesnopositionconcerningtheevidence,validityorapplicabilityofanyclaimedpatentrightsinrespect

14、thereof.Asofthedateofpublicationofthisdocument,ISOhadnotreceivednoticeof（八）patent(三)whichmayberequiredtoimplementthisdocument.However,implementersarecautionedthatthismaynotrepresentthelatestinformation,whichmaybeobtainedfromthepatentdatabaseavailableatwww.iso.org/patents.ISOshallnotbeheldresponsible

15、foridentifyinganyorallsuchpatentrights.Anytradenameusedinthisdocumentisinformationgivenfortheconvenienceofusersanddoesnotconstituteanendorsement.Foranexplanationofthevoluntarynatureofstandards,themeaningofISOspecifictermsandexpressionsrelatedtoconformityassessment,aswellasinformationaboutISOsadherencetotheWorldTradeOrganization(WTo)principlesintheTechnicalBarrierstoTrade(TBT),seeWWW.isoQrgisoforeword.htmLThisdocumentwaspreparedbyTechnicalCommitteeISO/TC172,Opticsandphotonics,SubcommitteeSC3,Opticalmaterialsandcomponents.Thissecondeditioncancelsandreplacesthefirstedition(ISO19741:2018),whichha