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측정장비

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IR Refractive Index Measurement System

모델명 : NRI series
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Based on the minimum deviation method (Fraunhofer method),monochromatic light of arbitrary wavelength (1 to 14µm）is irrdiated to a prism shaped sample, and the angle of transmitted light with respect  to incident light is measured to measure the refractive index of the sample. The newly deve

 

 Catalog（PDF）

 

 

Features

     

    • High precision measurement of the refractive index (0.0001) is possible in the wavelength range 1 to 14µm

     

    • Equipped with a temperature control function, the system can measure the difference i refractive index with temperature.

     

     

    Measurement Items

     

     

    Measurement Data

     

     

     

     

    Block Diagram

     

     

     

    Measurement Principle

     

     

     

    Specifications

     

     Measurenment method 

    		 Monimum deviation ( Draunhofer method )
     Measurement Items

     Refractive index, Apex angle

     ・Changes in refractive index by wavelength(dn/dλ）

     ・Changes in refractive index by sample temperature(dn/dT）

     Refractive index measurement range 1～4
     Measurement precision 0.0001（1×10-4） 
     Measurement wavelength range 1～14μm
     Irrdiation wavelength range 400nm～20µm*1
     Temperature control range -40～80℃*2
     Irrdiation size

     approx.Φ8mm

     Measurement functions Apex angle, Determination of minimum deviation position, Refractive index
     Measurement mode 1point measurement, WL dependence, Temperature denpendence
     Setting parameters Wavelength, Temperature, Expected refractive index
     Saving format Text format ( CSV format )

    *1　In order to perform measurement in 14 to 20µm, it is necessary to add a higher order light cut filter.
    *2　Due to the set temperature of the temperature controller, it may differ depending on the measurement sample. 


     

    Standara Configuration

     

    ●Caramic heater light source
    ●Halogen lamp light source
    ●Helium lamp（ｄ line 587.56nm）
    ●Light source converging system
    ●Monochromator and gratings
    ●Irrdiation optical system
    ●Laser for apex angle measurement
    ●Rotating stage and controller
    ●Sample holder
    ●Temperature control stage and controller
    ●Lock-in amplifer
    ●Sample compartment and frame
    ●Detector
    ●General controller
    ●Software
    ●Control PC

     

     

    Unilities

    　
    ●Main unit：Approx.W1800×Ｄ900×H1800mm
    　　　　　　＊Excluding PC and rack＊