BK7 Negative Meniscus 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
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BK7 Negative Meniscus Spherical Lenses
| NO. | Dia | EFL | R1 | R2 | Tc | Te | BFL |
| 11F1822R | 25.40 | -100.00 | 33.65 | 100.00 | 3.00 | 4.70 | -103.03 |
| 11F1510R | 25.40 | -125.00 | 38.77 | 100.00 | 3.00 | 4.30 | -128.29 |
| 11F1547R | 25.40 | -150.00 | 43.14 | 100.00 | 3.00 | 4.10 | -153.55 |
| 11F1097R | 25.40 | -200.00 | 50.23 | 100.00 | 3.00 | 3.80 | -204.06 |
| 11F1774R | 25.40 | -250.00 | 55.71 | 100.00 | 3.00 | 3.70 | -254.58 |
| 11F1015R | 25.40 | -300.00 | 95.11 | 250.00 | 3.00 | 3.50 | -303.22 |
| 11F1544R | 25.40 | -400.00 | 112.49 | 250.00 | 3.00 | 3.40 | -403.63 |
| 11F1988R | 25.40 | -500.00 | 126.34 | 250.00 | 3.00 | 3.30 | -504.04 |
| 11F1141R | 25.40 | -1000.00 | 253.20 | 500.00 | 3.00 | 3.20 | -1004.03 |
| 11F1764R | 50.80 | -100.00 | 40.61 | 200.00 | 5.00 | 12.30 | -104.19 |
| 11F1736R | 50.80 | -125.00 | 48.29 | 200.00 | 5.00 | 10.60 | -129.40 |
| 11F1829R | 50.80 | -150.00 | 55.21 | 200.00 | 5.50 | 9.60 | -155.08 |
| 11F1338R | 50.80 | -200.00 | 67.42 | 200.00 | 5.00 | 8.40 | -205.04 |
| 11F1269R | 50.80 | -250.00 | 77.67 | 200.00 | 5.00 | 7.70 | -255.47 |
| 11F1129R | 50.80 | -300.00 | 101.41 | 300.00 | 5.00 | 7.20 | -305.03 |
| 11F1115R | 50.80 | -400.00 | 121.46 | 300.00 | 5.00 | 6.60 | -405.60 |
| 11F1089R | 50.80 | -500.00 | 137.79 | 300.00 | 5.00 | 6.30 | -506.17 |
| 11F1591R | 50.80 | -1000.00 | 252.85 | 500.00 | 5.00 | 5.60 | -1006.72 |