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Spherical Bi-Convex Lenses
MATERIAL - MgF2 (Magnesium Fluoride)
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Crystaltechno LTD makes spherical bi-convex lenses from different types of optical crystals and glasses.
Spherical bi-convex lenses are widely used as short-focusing transfer optics and output optics.
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PARAMETER |
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VALUE |
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Surface figure |
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Lambda/2 at 633 nm per inch |
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Scratch-Dig |
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60 - 40 |
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Diameter tolerance |
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± 0.1 mm |
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Paraxial Focal Length Tolerance |
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± 2% |
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Centration |
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less than 5 arc minutes |
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Clear aperture |
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90 % |
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Bevels |
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(0.2-0.3) mm x 45° |
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D, mm |
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FL, mm |
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R1=R2, mm |
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tc, mm |
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te, mm |
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Part Number |
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12,7 |
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12,7 |
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7.14 |
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9.8 |
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2,0 |
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BCX3-01 |
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12,7 |
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19,0 |
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12.21 |
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5.6 |
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2,0 |
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BCX3-02 |
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12,7 |
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25,0 |
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16.40 |
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4.6 |
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2,0 |
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BCX3-03 |
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12,7 |
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50,0 |
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33.59 |
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3.2 |
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2,0 |
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BCX3-04 |
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25,4 |
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25,0 |
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14.44 |
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17.1 |
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2,0 |
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BCX3-05 |
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25,4 |
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50,0 |
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33.08 |
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7.1 |
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2,0 |
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BCX3-06 |
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25,4 |
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75,0 |
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50.33 |
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5.3 |
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2,0 |
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BCX3-07 |
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25,4 |
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100,0 |
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67.44 |
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4.4 |
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2,0 |
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BCX3-08 |
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25,4 |
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150,0 |
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101.54 |
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3.6 |
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2,0 |
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BCX3-09 |
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25,4 |
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200,0 |
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135.60 |
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3.2 |
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2,0 |
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BCX3-10 |
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25,4 |
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250,0 |
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169.63 |
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3.0 |
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2,0 |
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BCX3-11 |
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25,4 |
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500,0 |
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339.69 |
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2.5 |
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2,0 |
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BCX3-12 |
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38,1 |
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50,0 |
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31.89 |
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15.6 |
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3,0 |
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BCX3-13 |
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38,1 |
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75,0 |
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49.62 |
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10.6 |
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3,0 |
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BCX3-14 |
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38,1 |
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100,0 |
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66.90 |
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8.5 |
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3,0 |
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BCX3-15 |
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38,1 |
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200.0 |
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135.28 |
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5.7 |
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3,0 |
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BCX3-16 |
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38,1 |
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375.0 |
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254.44 |
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4.4 |
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3,0 |
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BCX3-17 |
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38,1 |
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750.0 |
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509.53 |
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3.7 |
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3,0 |
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BCX3-18 |
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* Numerical parameters correspond to Lambda=5 µm (n=1.34)
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