The Precision People
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AL12-BK7 Double-Convex Lenses
| Material: | BK7 grade A optical glass |  |
| Design Wavelength: | 587.6nm | |
| Diameter Tolerance: | +0.0/-0.1mm | |
| Center Thickness Tolerance: | +0.2mm | |
| Surface Figure: | λ/4 @632.8nm | |
| Focal Length Tolerance: | +2% | |
| Centering Tolerance: | 3 arc minutes | |
| Surface Quality: | 60-40 scratch-dig | |
| Bevel: | 1.2mmX45o | |
| Coatings: | without coating |
| (mm) | ||||||
| Catalog No. | Dia. | EFL | BFL | R1=-R2 | Tc | Te |
| AL12-002-002 | 2.0 | 2.0 | 1.359 | 1.734 | 1.63 | 1.0 |
| AL12-002-003 | 2.0 | 2.5 | 1.962 | 2.304 | 1.46 | 1.0 |
| AL12-003-003 | 3.0 | 3.0 | 2.291 | 2.732 | 1.90 | 1.0 |
| AL12-003-006 | 3.0 | 6.3 | 5.833 | 6.265 | 1.36 | 1.0 |
| AL12-003-010 | 3.0 | 10.0 | 9.588 | 10.115 | 1.22 | 1.0 |
| AL12-004-004 | 4.0 | 4.0 | 3.214 | 3.728 | 2.16 | 1.0 |
| AL12-006-006 | 6.3 | 6.3 | 5.065 | 5.861 | 3.34 | 1.50 |
| AL12-010-010 | 10.0 | 10.0 | 8.240 | 9.419 | 4.87 | 2.0 |
| AL12-012-012 | 12.5 | 12.5 | 10.514 | 11.885 | 5.55 | 2.0 |
| AL12-016-016 | 16.0 | 16.0 | 13.668 | 15.311 | 6.51 | 2.0 |
| AL12-025-025 | 25.0 | 25.0 | 21.846 | 24.19 | 8.96 | 2.0 |
| AL12-040-040 | 40.0 | 40.0 | 35.236 | 38.85 | 13.59 | 2.5 |
| AL12-050-050 | 50.0 | 50.0 | 44.097 | 48.59 | 16.85 | 3.0 |
| AL12-063-063 | 63.0 | 63.0 | 55.880 | 61.39 | 20.40 | 3.0 |
| AL12-100-100 | 100.0 | 100.0 | 89.981 | 98.5 | 31.52 | 4.0 |