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Specifications

Calcium Fluoride Bi-concave Spherical Lenses
Size and coating of the lenses can be customized according to users’ needs
 
Material:Calcium Fluoride
Design Wavelength:587.6nm
Focal Length Tolerance:±1%
Diameter Tolerance:+0.0/-0.1mm
Thickness Tolerance:±0.1mm
Surface Accuracy:λ/4@632.8nm
Surface Quality:80-50
Centration:<3'
Clear Aperture:>80%
Bevelling :<0.2×45°
Coating:IR AR Coating 3-5μm
 
Model
Dia(mm)
EFL(mm)
R1=R2(mm)
BFL(mm)
Tc(mm)
Te(mm)
04D1215
12.70
-15.00
-13.38
-15.85
2.50
5.70
04D1225
12.70
-25.00
-22.14
-26.03
3.00
4.90
04D2530
25.40
-30.00
-26.40
-30.86
2.50
9.00
04D2550
25.40
-50.00
-43.83
-51.03
3.00
6.80