Positive Meniscus Lenses
| Specification |
Standard |
| Material |
As indicated
below |
| Diameter Tolerance |
+0.00mm / - 0.039mm |
| Design
Wavelength |
4 µm |
| Effective
Focal Length |
± 1% @ design
wavelength |
| Thickness Tolerance |
± 0.05mm |
| Clear Aperture |
85% central diameter |
| Surface
Irregularity |
λ @
0.63µm -- as indicated below |
Surface
Quality |
60-40 |
| Standard Bevel |
0.005"
– 0.060" face width depending on diameter |
| Coating |
As indicated
below |
Notes:
In reference to the columns below labeled "DWL", this means Design
Wavelength & refers to the Effective Focal Length(mm) for each lenses.
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