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    氟化鈣窗片

     

    CaF2 Windows are made from Calcium Fluoride material, which has transparent range from 170-7800nm. The refractive index is 1.399 at 5000nm. It has little hygroscopic susceptibility and high thermal expansion coefficient. CaF2 Windows are relatively soft and somewhat hygroscopic so polishing, coating and handling are more critical than UV Fused Silica windows.

    Specifications:
    Material: --------------------------------------------------------- Calcium Fluoride single crystal
    Diameter Tolerance: ------------------------------------------ +0.0, -0.1mm
    Thickness Tolerance: ---------------------------------------- ±0.2mm
    Clear Aperture: ------------------------------------------------->80%
    Parallelism:------------------------------------------------------- 1 arc minute
    Flatness:----------------------------------------------------------- λ/2 @ 632.8 nm
    Surface quality: ------------------------------------------------- 80/50 for general and 40/20 scratch and dig  for high precision

    Protective Bevel:--------------------------------------------------<0.25x45deg

    Coating:-------------------------------------------------------------Uncoated


     

    Part No.
     Dia(mm)
    T(mm)
    WIN4-101
    10.0
    0.5
    WIN4-102
    12.7
    2.0
    WIN4-103
    12.7
    3
    WIN4-201
    25.4
    3.0
    WIN4-202
    25.4
    4
    WIN4-301
    38.0
    5.0
    WIN4-501
    50.0
    3.0
    WIN4-502
    50.0
    4

     

    Note: Other sizes and coating request are available upon request.


       PDF to download

     
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