Bi-Concave Lenses
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Bi-Concave Lenses |
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General specification |
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Material |
H-K9L (Schott BK7)/Fused Silica/Ge/Si/ZnSe |
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Design Wavelength |
632.8nm |
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Focal Length Tolerance |
±1% |
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Diameter Tolerance |
+0.0/-0.1mm |
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Thickness Tolerance |
±0.1mm |
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Surface Accuracy |
L/4@632.8nm |
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Surface Quality |
40-20 |
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Centration |
<3 arc min |
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Clear Aperture |
>90% |
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Bevelling |
<0.2 *45 |
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Coating |
A: AR Coating 350nm-650nm |
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B: AR Coating 650nm-1050nm |
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C: AR Coating 1050nm-1580nm |
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No. |
EFL（mm) |
Dia |
R1(mm) |
R2(mm) |
BFL(mm) |
Tc(mm) |
Te(mm) |
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11D1569R |
-25.00 |
12.70 |
-26.17 |
-26.17 |
-25.81 |
2.50 |
4.10 |
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11D1903R |
-30.00 |
12.70 |
-31.41 |
-31.41 |
-30.97 |
3.00 |
4.30 |
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11D1357R |
-50.00 |
12.70 |
-52.10 |
-52.10 |
-51.15 |
3.50 |
4.30 |
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11D1464R |
-50.00 |
25.40 |
-52.01 |
-52.01 |
-50.98 |
3.00 |
6.10 |
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11D1170R |
-75.00 |
25.40 |
-77.86 |
-77.86 |
-76.15 |
3.50 |
5.60 |
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11D1613R |
-100.00 |
25.40 |
-103.69 |
-103.69 |
-101.31 |
4.00 |
5.60 |
