- Product Name: Double concave lens
- Material:H-K9
- Dimensional tolerance:±0.1
- Focal length tolerance:±1%
- Central Thickness tolerance:±0.1
- Surface Flatness:λ/4
- Surface Quality:II~III
Product overview
| D(mm) | F(mm) | BFL(mm) | CT(mm) | ET(mm) | Identification of product |
| 3.00 | -1.94 | -2.35 | 1.20 | 2.21 | SL-BCV-D3F3 |
| -3.90 | -4.29 | 1.20 | 1.85 | SL-BCV-D3F3 | |
| -5.15 | -5.59 | 1.40 | 1.87 | SL-BCV-D3F5 | |
| -10.00 | -10.51 | 1.50 | 1.73 | SL-BCV-D3F10 | |
| 6.00 | -15.00 | -15.52 | 1.50 | 1.92 | SL-BCV-D5F15 |
| -18.40 | -19.07 | 2.00 | 2.34 | SL-BCV-D5F18 | |
| -22.00 | -22.92 | 3.00 | 3.28 | SL-BCV-D5F22 | |
| -25.00 | -26.20 | 3.00 | 3.25 | SL-BCV-D5F25 | |
| 10.00 | -30.00 | -30.82 | 3.00 | 3.84 | SL-BCV-D10F30 |
| -32.50 | -33.53 | 3.00 | 3.77 | SL-BCV-D10F32 | |
| -35.00 | -35.97 | 3.00 | 3.71 | SL-BCV-D10F35 | |
| -40.00 | -40.78 | 3.00 | 3.62 | SL-BCV-D10F40 | |
| 15.00 | -44.20 | -45.35 | 3.50 | 4.77 | SL-BCV-D15F44 |
| -47.00 | -48.28 | 3.90 | 5.09 | SL-BCV-D15F47 | |
| -50.00 | -50.84 | 3.00 | 4.12 | SL-BCV-D15F50 | |
| -55.00 | -56.16 | 3.50 | 4.51 | SL-BCV-D15F55 | |
| 20.00 | -58.00 | -59.26 | 4.00 | 5.72 | SL-BCV-D20F58 |
| -60.00 | -61.20 | 4.00 | 5.67 | SL-BCV-D20F60 | |
| -65.00 | -67.75 | 8.50 | 10.04 | SL-BCV-D20F65 | |
| -70.00 | -70.96 | 3.00 | 4.41 | SL-BCV-D20F70 | |
| 30.00 | -72.50 | -74.43 | 6.00 | 9.12 | SL-BCV-D30F72 |
| -75.00 | -78.43 | 10.50 | 13.54 | SL-BCV-D30F75 | |
| -80.00 | -83.62 | 11.00 | 13.84 | SL-BCV-D30F80 | |
| -85.00 | -86.89 | 6.00 | 8.64 | SL-BCV-D30F85 | |
| 50.00 | -95.00 | -96.92 | 6.00 | 12.71 | SL-BCV-D50F95 |
| -133.50 | -135.64 | 6.50 | 11.16 | SL-BCV-D50F133 | |
| -300.00 | -304.66 | 12.00 | 14.03 | SL-BCV-D50F300 | |
| -335.00 | -337.96 | 9.00 | 10.82 | SL-BCV-D50F335 |
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