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      Home > Instruments & Meters > Optical instruments > BK7 windows
      Changchun Ji Xiang Optoelectronic Co., Ltd
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      BK7 windows
      Model: as drawing
      Material:BK7 grade A optical glass
      Size:Dia 3.0~200.0mm x thinkness 0.3~60.0mm
      Dimension tolerance:0/-0.1mm
      Thickness Tolerance:?0.2mm
      Angle tolerance:5 arc sec - 3 arc min
      Optical paralellism:10arc seconds - 1 arc minutes
      Flatness(@633nm):?/10 - 1?
      Surface quality:80 - 10scratch and dig
      Clear aperture:90%
      Coating:avaliable upon request
      Bevel 0.25mm x 45

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