Feature Principle

KOBRA-31PRW KOBRA-31PRW/TLT Measurement method Rotating polarizer method, Parallel Nicol rotation method Wave length 480,550,650,750nm Form Cut sample,Large sample Measuring Object Elliptical polarizer plate ( Polarizer + Retardation plate) Retardation plate Sample dimensions(mm) More than 30 angles Measurement area(mm2) 33(5.8 x 5.8) Software KOBRA-PRW,KOBRA-PRW/TW The main application example Ellipticity, ellipse orientation angle, incident angle

Software Measurement menu Measurement item (feature) Note 31PR (standard) Polarized light board axis measurement Angle of absorption axis or penetration axis of polarized light board standard Measurement of transmittivity of polarizing plate Single purpose transmittivity of polarized light board, Transmittivity of absorption axis, Permeability axis, Parallel position transmittivity, Direct position transmittivity, Angle of absorption axis or penetration axis Angle of oval polarized light board measurement Polarized light board : angle of absorption axis or penetration axis Retardation boards :Orientation angle, wave length decentralization characteristic of Re Retardation board measurement Orientation angle, wave length decentralization characteristic of Re 31PR/LR (low Re measurement) Retardation board measurement Low Retardation board, Retardation board(1~50nm), Orientation angle option 31PR/TW (twist measurement) twist measurement Dispersion of Retardation Incident and outlet light angle director azimuth, twist angle Azimuth angle of analyzer and polarizer by which the maximum amount of transmitted light is given and the chromatic dispersion of Olientation light angle The cell gap (delta n is input) option Transmittivity measurement Transmittivity distribution graph when azimuth angle of polarizer and analyzer is arbitrarily set