1. <code id="7asms"></code>

      <big id="7asms"><em id="7asms"><track id="7asms"></track></em></big>
    2. <code id="7asms"><nobr id="7asms"><sub id="7asms"></sub></nobr></code>
    3. <code id="7asms"></code>
      <strike id="7asms"></strike>
      <tr id="7asms"></tr>
    4. 福州高特光电科技有限公司

      The Positive Meniscus Lenses are a convex-concave lens, but is thicker at the center than at the edges. They are felt polished and are used universally in the ophthalmic industry where convention dictates that lens power be specified in Diopters.

       

       

       

       

      Specifications of Mensiscus Lens:

      Material: BK7
      Design Wavelength: 546.1nm, n=1.518721
      Diameter Tolerance: +0.0/-0.1mm
      Paraxial Focal Length: ±2%
      Centration: 3 arc minutes
      Surface Figure : l/4 @ 633 nm
      Surface Quality: 60/40
      Clear Aperture: >80%
      Bevel: <0.25mm X 45°
      Coating: Uncoated

      Item# F(mm) f(mm) R1 R2 Tc Te Fb
      MNP1-201 25.4 100.0 33.42 89.95 4.0 2.39 96.01
      MNP1-202 25.4 150.0 42.36 89.95 4.0 2.95 145.20
      MNP1-203 25.4 200.0 48.75 89.95 3.5 2.72 194.51
      MNP1-204 25.4 250.0 83.95 235.5 3.5 2.88 245.97
      MNP1-205 25.4 300.0 94.19 235.5 3.5 2.98 296.27
      MNP1-206 25.4 400.0 110.92 235.5 3.5 3.11 396.06
      MNP1-207 25.4 500.0 124.17 235.5 3.5 3.19 496.16
      MNP1-208 25.4 1000.0 278.34 600.00 3.5 3.30 993.7

      call us
      Email Us
      Copyright 2011, fzgaote.com, All Rights Reserved.create by 福州网站建设
      首页-优德w88体育app