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      • 硅平凹透鏡
       
      硅平凹透鏡

       

      Silicon (Si) Plano concave Lenses are made from Silicon material. They present a concave surface and a plano surface. They have a negative focal length and are used for image reductinon or to spread light. These lenses diverge collimated incident light and form virtual images which are seen through the lens. They are often used to expand light or to increase focal lengths in existing systems.

      Specifications:
      Material:-----------------------------------------------------------Silicon
      Diameter Tolerance:----------------------------------------------+0.0/-0.15mm
      Focal Length Tolerance (mm):----------------------------------+/-2%
      Centration:---------------------------------------------------------<3 arc minutes
      Clear Aperture:---------------------------------------------------->85%
      Surface Figure:-----------------------------------------------------<λ/4@633nm
      Surface Quality:-----------------------------------------------------60/40
      Protected Bevel:---------------------------------------------------<0.25mmx45deg
      Coating:--------------------------------------------------------------uncoated
       

      Part No.
      F(mm)
      f(mm)
      R(mm)
      Tc(mm)
      Te(mm)
      Fb(mm)
      PCV7-201
      25.4
      -50.0
      21.31
      2.0
      6.2
      -51.4
      PCV7-202
      25.4
      -75.0
      31.96
      2.0
      4.6
      -76.4
      PCV7-203
      25.4
      -100.0
      42.63
      2.0
      3.9
      -101.4
      PCV7-204
      25.4
      -150.0
      63.94
      2.0
      3.3
      -151.4
      PCV7-205
      25.4
      -200.0
      85.25
      2.0
      2.95
      -201.4
      PCV7-206
      25.4
      -250.0
      106.56
      2.0
      2.75
      -251.4
      PCV7-207
      25.4
      -300.0
      127.88
      2.0
      2.6
      -301.4
      PCV7-208
      25.4
      -500.0
      213.13
      2.0
      2.4
      -501.4

       

      Silicon Plano concave Lens


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