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OURPRODUCTSOpticalcrystalsCaF2(Calciumfluoride)Calciumfluoride(CaF2)isamaterialwithhighopticaltransmittancerangingfromthevacuumultravioletregiontothenear-infraredregion.Itischemicallystableandhasexcellentresistancetotheultravioletlaser.Ithasexcellentchromaticaberrationcompensationcapability,withbothlowdispersivityandextraordinarylowdispersivity.PRODUCT.1ExcimersLaserGradeCaF2withhighopticaltransmittanceanddurabilityManufacturingsystemofsemiconductorssupportaninformationorientedsociety.Thekeyplayer,thesemiconductorlithographyequipment,usesextremeshortwavelengthvacuumultravioletlasers(ArFlaser,KrFlaser)todrawfinecircuits.Sincetheselasershaveashortwavelengthandveryhighenergydensity,CaF2withmuchhigherlaserdurabilityisusedratherthanquartz.WeoffertheexcimerlasergradeCaF2productwithhighopticaltransmittanceanddurabilityasopticalmaterialforlasers,suitableforsemiconductorlithographyequipment.RefractiveindexLaserDurabilityTransmittanceisnearlyunchangedevenafterapplyinganArFexcimerlaser.Wavelength(nm)(inavacuum)Refractiveindexfornitrogen(22℃1013.25hPa)95t=32mm780.2371.430740706.714656.454632.990587.725546.227468.269435.957404.770365.119[r][C][d][e][F][g][h][i]1.4316621.4324501.4328771.4338381.4349261.4370061.4394601.4414791.444880Transmittance,%9085PrePost80120140160180200210Wavelength,nm334.224289.444253.728228.872214.506206.266194.2271.4484801.4561691.4659811.4763601.4845611.4903171.500597●Irradiationconditions：30mJ/cm213ns(FWHM)、2×105shotsApplicationsSemiconductorlithographyequipment,windowmaterialforlasersintheultravioletregion*CaF2productsfortheusualultraviolet(UV)regionarealsoavailable.Pleasefeelfreetoinquire.Sellmeier'sdispersionformulan2-1=A1λ2/(λ2-B1）+A2λ2/(λ2-B2）+A3λ2/(λ2-B3）184.9501.510557A16.254288046×10-1B12.813183822×10-3Accuracyofmeasurement780.237nm～365.119nm±1×10-6334.244nm～206.266nm±3×10-6194.227nm、184.950nm±5×10-6A24.132684951×10-1A33.40919389222℃、1013.25hPa、innitrogenB21.066206606×10-2B31.065596428×103

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PRODUCT.2Visible/InfraredGradeCaF2withhighopticaltransmittanceandlightweightCaF2hashighopticaltransmittanceinthevisiblelight/infraredregions.Combinationwithglassshowshighchromaticaberrationcompensationcapabilityduetoitslowerdispersionthanglassandextraordinarylowdispersion.Thelighterweightthanextraordinarylowdispersionopticalglass(EDglass)canreducetheburdenforaphotographerusingamotioncamera.ApplicationsLensesforTVcameras,Interchangeablelensesfordigitalcameras,lensesforastronomicaltelescopes/microscopes,andwindowmaterial/sampleholdersforinfraredanalyzersRefractiveindexWavelength(nm)(inair)Refractiveindexforair(22℃1013.25hPa)2325.421.4221241970.091.4240121529.581.4261271128.641013.64852.110706.519656.273643.847632.820587.562546.075[t][s][r][C][C'][d][e]1.4281121.4288001.4300291.4316721.4324591.4326891.4328861.4338471.434935Transmittance,%100908070605040302010CaF2BaF2MgF2486.133[F]1.4370150024681012141618479.992435.835[F'][g]1.4372731.439469Wavelength,μm404.656[h]1.441489365.015[i]Accuracyofmeasurement2325.42nm～1128.64nm±5×10-61013.98nm～365.015nm±2×10-6Humidity50%1.444888Sellmeier'sdispersionformulan2-1=A1λ2/(λ2-B1）+A2λ2/(λ2-B2）+A3λ2/(λ2-B3）A15.692465192×10-1B12.376435344×10-3A24.695025627×10-1B21.022975163×10-2Opticalpropertiesνd95.23θgF0.5386ΔθgF0.0546A31.325486639×10422℃、1013.25hPa、inairB34.106830854×106ContactUsNIHONKESSHOKOGAKUCO.,LTD.【HEADOFFICEANDPRODUCTIONFACILITIES】810-5,Nobecho,Tatebayashi,Gunma,374-0047JapanTel.+81-276-72-1917Fax.+81-276-75-1800https://nk-k.co.jp/en/Copyright©NIHONKESSHOKOGAKUCO.,LTD.AllRightsReserved.

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CORPORATEOUTLINENAMENIHONKESSHOKOGAKUCO.,LTD.ESTABLISHEDJuly1973STATEDCAPITAL90millionyen(Stockholder:MarunouchiCapitalInc.100%)HEADOFFICEANDPRODUCTIONFACILITIES810-5,Nobecho,Tatebayashi,Gunma,374-0047JapanTel.+81-276-72-1917Fax.+81-276-75-1800AGEOPRODUCTIONFACILITOnthepremisesofMITSUIKINZOKU,1013-1,Ageoshimo,Ageo,Saitama,362-0025JapanTel.+81-48-777-7678Fax.+81-48-777-7679OVERSEASOFFICENK&KUSA,Inc.1735N.FirstStreet,Suite290,SanJose,CA95112U.S.A.Tel.+1-408-320-2617REPRESENTATIVEDIRECTORTadahiroYoshidaOURFINANCIALINSTITUTIONSGunmaBank,SumitomoMitsuiBankingCorporationCopyright©NIHONKESSHOKOGAKUCO.,LTD.AllRightsReserved.