简介:作为富士胶片(FUJFILM)的经典数码相机——FinePixS602,是FinePix×6900的后继机型,以富士的第3代超级CCD组件为核心。无论是从图像品质上还是从操控性能上看.S602比其前辈都有很大的提高。FinePix×S602采用的第3代超级CCD组件由更新的CCD和更新的LSI组成,这使相机具有高达ISO1600的感光度,记录像素高达603万(2832×2128)。极高的感光度,使得拍摄者能够在不利的光线条件下进行拍摄或者抓拍快速移动的物体。FinePixS602采用的是富士FujinonSuperEBC6倍光学变焦镜
简介:Er^3+-dopedSrBi4Ti4O15-Bi4Ti3O12(SBT-BIT-xEr^3+,x=0.00,0.05,0.10,0.15and0.20)inter-growthceramicsweresynthesizedbythesolid-statereactionmethod.Structural,electricalandup-conversionpropertiesofSBT-BIT-xEr^3+wereinvestigated.Allsamplesshowedasinglephaseoftheorthorhombicstructure.RamanspectroscopyindicatedthattheEr^3+substitutionforBi^3+atAsitesofthepseudo-perovskitelayerincreasesthelatticedistortionofSBT-BIT-xEr^3+ceramics.ThesubstitutionofBi^3+byEr^3+leadstoadecreaseofdielectriclosstanδandanincreaseofconductivityactivationenergy.Piezoelectricconstantd33wasslightlyimproved,butdielectricconstantwasdecreasedwiththeEr^3+doping.TheSBT-BIT-xEr^3+ceramicwithx=0.15exhibitstheoptimizedelectricalbehavior(d33~17pC/N,tanδ~0.83%).Moreover,twobrightgreen(532and548nm)andonered(670nm)emissionbandswereobservedunderthe980nmexcitation.Optimizedemissionintensitywasalsoobtainedwhenx=0.15fortheSBT-BIT-xEr^3+ceramic.Therefore,thiskindofceramicsoughttobepromisingcandidatesformultifunctionaloptoelectronicapplications.