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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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