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Home > Spherical Lens > CaF2 Bi-concave lens
Material:CaF2
Design Wavelength:587.6nm
Focal Length Tolerance:±1%
Diameter Tolerance:+0.0,-0.1mm
Center Thickness:±0.1mm
Surface Figure:λ/2@632.8nm
Surface Quality:80-50 scratch and dig
Centration:3 arc minutes
Clear Aperture:>90%
Bevel:<0.25mm x 45°
Coating:Specified by customer
| CaF2 Bi-concave lens |  |
Material:CaF2 Design Wavelength:587.6nm Focal Length Tolerance:±1% Diameter Tolerance:+0.0,-0.1mm Center Thickness:±0.1mm Surface Figure:λ/2@632.8nm Surface Quality:80-50 scratch and dig Centration:3 arc minutes Clear Aperture:>90% Bevel:<0.25mm x 45° Coating:Specified by customer| CaF2 Bi-concave lens | ||||||
| Part No. | Dia(mm) | EFL(mm) | R(mm) | CT(mm) | ET(mm) | BFL(mm) |
| DCC12015 | 12.70 | -15.00 | -13.38 | 2.50 | 5.70 | -15.84 |
| DCC12025 | 12.70 | -25.00 | -22.14 | 3.00 | 4.90 | -26.03 |
| DCC25030 | 25.40 | -30.00 | -26.40 | 2.50 | 9.00 | -30.86 |
| DCC25050 | 25.40 | -50.00 | -43.83 | 3.00 | 6.80 | -51.04 |