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Spherical Bi-Convex Lenses
CaF2 BaF2 MgF2 LiF FS
BK-7 Si Ge ZnS ZnSe
   
  Material   Zinc Selenide 
  Surface figure   Lambda/2 at 633 nm per inch
  Scratch-Dig   80 - 50
  Diameter   tolerance   ± 0.1 mm
  Paraxial
  Focal Length   Tolerance 		  ± 2%
  Centration   less than 5 arc minutes
  Clear aperture   > 80%
  Bevels   (0.2+0.3)mm x 45°
   
D, mm FLx, mm R, mm tc, mm te, mm Part Number
12.7 12.7 34.61 3.2 2.0 BCX17-01
12.7 19.0 52.52 2.8 2.0 BCX17-02
12.7 25.0 69.24 2.6 2.0 BCX17-03
19.05 19.0 52.23 3.8 2.0 BCX17-04
19.05 25.0 69.02 3.3 2.0 BCX17-05
19.05 50.0 139.23 2.7 2.0 BCX17-06
19.05 75.0 209.29 2.4 2.0 BCX17-07
25.4 25.0 68.70 4.4 2.0 BCX17-08
25.4 50.0 139.07 3.2 2.0 BCX17-09
25.4 75.0 209.19 2.8 2.0 BCX17-10
25.4 100.0 279.26 2.6 2.0 BCX17-11
38.1 50.0 138.34 5.6 3.0 BCX17-12
38.1 75.0 208.61 4.7 3.0 BCX17-13
38.1 100.0 278.74 4.3 3.0 BCX17-14
38.1 150.0 418.88 3.9 3.0 BCX17-15
50.8 50.0 137.72 7.7 3.0 BCX17-16
50.8 100.0 278.44 5.3 3.0 BCX17-17
50.8 150.0 418.68 4.5 3.0 BCX17-18
50.8 200.0 558.79 4.2 3.0 BCX17-19
50.8 250.0 698.85 3.9 3.0 BCX17-20

* Numerical parameters correspond to Lambda=10.6 µm (n=2.4)
 
     
 

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