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Spherical Bi-Convex Lenses
BK-7 Si Ge ZnS ZnSe
CaF2 BaF2 MgF2 LiF FS
 
  Material   Barium  Fluoride 
  Surface figure   Lambda/2 at 633 nm per inch
  Scratch-Dig   60 - 40
  Diameter   tolerance   ± 0.1 mm
  Paraxial
  Focal Length   Tolerance 		  ± 2%
  Centration   less than 5 arc minutes
  Clear aperture   90%
  Bevels   (0.2+0.3)mm x 45°
   
D, mm FL, mm R1=R2, mm tc, mm te, mm Part Number
12.7 12.7 10.60 6.2 2.0 BCX2-01
12.7 19.0 16.79 4.5 2.0 BCX2-02
12.7 25.0 22.38 3.8 2.0 BCX2-03
12.7 50.0 45.54 2.9 2.0 BCX2-04
25.4 25.0 21.22 10.4 2.0 BCX2-05
25.4 50.0 45.09 5.7 2.0 BCX2-06
25.4 75.0 68.30 4.4 2.0 BCX2-07
25.4 100.0 91.40 3.8 2.0 BCX2-08
25.4 150.0 137.50 3.2 2.0 BCX2-09
25.4 200.0 183.54 2.9 2.0 BCX2-10
25.4 250.0 229.57 2.7 2.0 BCX2-11
25.4 500.0 459.63 2.4 2.0 BCX2-12
38.1 50.0 44.08 11.7 3.0 BCX2-13
38.1 75.0 67.64 8.5 3.0 BCX2-14
38.1 100.0 90.88 7.0 3.0 BCX2-15
38.1 125.0 114.01 6.2 3.0 BCX2-16
38.1 200.0 183.21 5.0 3.0 BCX2-17
38.1 375.0 344.36 4.1 3.0 BCX2-18
38.1 750.0 689.44 3.5 3.0 BCX2-19
50.8 50.0 42.64 19.8 3.0 BCX2-20
50.8 100.0 90.35 10.3 3.0 BCX2-21
50.8 150.0 136.77 7.8 3.0 BCX2-22
50.8 200.0 182.96 6.5 3.0 BCX2-23
50.8 250.0 229.08 5.8 3.0 BCX2-24
50.8 300.0 275.15 5.3 3.0 BCX2-25
50.8 400.0 367.25 4.8 3.0 BCX2-26
50.8 500.0 459.31 4.4 3.0 BCX2-27
50.8 750.0 689.38 3.9 3.0 BCX2-28
50.8 1000.0 920.00 3.7 3.0 BCX2-29
76.2 150.0 135.77 13.9 3.0 BCX2-30
76.2 200.0 182.24 11.1 3.0 BCX2-31
76.2 250.0 228.51 9.4 3.0 BCX2-32
76.2 300.0 274.68 8.3 3.0 BCX2-33
76.2 400.0 366.90 7.0 3.0 BCX2-34
76.2 500.0 459.03 6.2 3.0 BCX2-35
76.2 600.0 551.11 5.6 3.0 BCX2-36
76.2 800.0 735.22 5.0 3.0 BCX2-37
76.2 1000.0 920.00 4.6 3.0 BCX2-38
76.2 1500.0 1380.00 4.1 3.0 BCX2-39
D, mm FL, mm R1=R2, mm tc, mm te, mm Part Number

* Numerical parameters correspond to Lambda=5 µm (n=1.46)
 
     
 

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