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Home > Spherical Lens > BK7 Plano-concave Lens
Material:BK7 grade A optical glass
Design Wavelength:632.8nm
Focal Length Tolerance:±1%
Diameter Tolerance:+0.0,-0.1mm
Center Thickness:±0.1mm
Surface Figure:λ/4@632.8nm
Surface Quality:40-20 scratch and dig
Centration:3 arc minutes
Clear Aperture:>90%
Bevel:<0.25mm x 45°
Coating:Specified by customer
| BK7 Plano-concave Lens |  |
Material:BK7 grade A optical glass Design Wavelength:632.8nm Focal Length Tolerance:±1% Diameter Tolerance:+0.0,-0.1mm Center Thickness:±0.1mm Surface Figure:λ/4@632.8nm Surface Quality:40-20 scratch and dig Centration:3 arc minutes Clear Aperture:>90% Bevel:<0.25mm x 45° Coating:Specified by customer| BK7 Plano-concave Lens | ||||||
| Part No. | Dia(mm) | EFL(mm) | R(mm) | CT(mm) | ET(mm) | BFL(mm) |
| PCK06018 | 6.00 | -18.00 | -9.27 | 2.00 | 2.50 | -19.32 |
| PCK06024 | 6.00 | -24.00 | -12.36 | 2.00 | 2.40 | -25.32 |
| PCK09027 | 9.00 | -27.00 | -13.91 | 2.00 | 2.70 | -28.32 |
| PCK12025 | 12.70 | -25.00 | -12.88 | 3.00 | 4.70 | -26.98 |
| PCK12030 | 12.70 | -30.00 | -15.45 | 3.00 | 4.40 | -31.98 |
| PCK12050 | 12.70 | -50.00 | -25.75 | 3.50 | 4.30 | -52.31 |
| PCK25050 | 25.40 | -50.00 | -25.75 | 3.50 | 6.90 | -52.31 |
| PCK25075 | 25.40 | -75.00 | -38.63 | 3.50 | 5.60 | -77.31 |
| PCK02100 | 25.40 | -100.00 | -51.51 | 4.00 | 5.60 | -102.64 |
| PCK50075 | 50.80 | -75.00 | -38.63 | 3.50 | 13.00 | -77.31 |
| PCK50100 | 50.80 | -100.00 | -51.51 | 4.00 | 10.70 | -102.64 |
| PCk50150 | 50.80 | -150.00 | -77.26 | 4.00 | 8.30 | -152.64 |