BK7 Plano-concave Spherical Lenses
Material:BK7
Design Wavelength :632.8nm
Focal Length Tolerance :±1%
Diameter Tolerance :+0.0/-0.1mm
Thickness Tolerance :±0.1mm
Surface Accuracy :λ/4@632.8nm
Surface Quality :40-20
Centration :<3'
Clear Aperture :>90%
Bevelling :<0.2×45°
Coating :AR A:350-650nm
B:650-1050nm C:1050-1580nm
B:650-1050nm C:1050-1580nm
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BK7 Plano-concave Spherical Lenses
| NO. | Dia | EFL | R | Tc | Te | BFL |
| 11C1035R | 6.00 | -18.00 | -9.27 | 2.00 | 2.50 | -19.32 |
| 11C1975R | 6.00 | -24.00 | -12.36 | 2.00 | 2.40 | -25.32 |
| 11C1906R | 9.00 | -27.00 | -13.91 | 2.00 | 2.70 | -28.32 |
| 11C1054R | 12.70 | -25.00 | -12.88 | 3.00 | 4.70 | -26.98 |
| 11C1060R | 12.70 | -30.00 | -15.45 | 3.00 | 4.40 | -31.98 |
| 11C1439R | 12.70 | -50.00 | -25.75 | 3.50 | 4.30 | -52.31 |
| 11C1259R | 25.00 | -50.00 | -25.75 | 3.50 | 6.70 | -52.31 |
| 11C1258R | 25.00 | -75.00 | -38.63 | 3.50 | 5.60 | -77.31 |
| 11C1254R | 25.00 | -100.00 | -51.51 | 4.00 | 5.50 | -102.64 |
| 11C1715R | 25.40 | -50.00 | -25.75 | 3.50 | 6.90 | -52.31 |
| 11C1582R | 25.40 | -75.00 | -38.63 | 3.50 | 5.60 | -77.31 |
| 11C1120R | 25.40 | -100.00 | -51.51 | 4.00 | 5.60 | -102.64 |
| 11C1315R | 50.80 | -75.00 | -38.63 | 3.50 | 13.00 | -77.31 |
| 11C1093R | 50.80 | -100.00 | -51.51 | 4.00 | 10.70 | -102.64 |
| 11C1611R | 50.80 | -150.00 | -77.26 | 4.00 | 8.30 | -152.64 |