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Material: Calcium Fluoride
Design Wavelength: 587.6nm
Surface Flatness: λ/2
Surface Quality: 60/40
Centration: ≤3 arcmin
Focal Length Tolerance: ±1%
CATEGORY
CaF2 Bi-Concave Lenses
Model: JKL54
| Dia | Focus | Back Focus | R1 | Center Thickness | Edge Thickness | uncoated model | AR @3~5μm model |
| 12.7 | -15 | -15.8 | -13.4 | 2.5 | 5.7 | JKL54-012-015 | JKL54-012-015-IR1 |
| 12.7 | -25 | -26 | -22.1 | 3 | 4.9 | JKL54-012-025 | JKL54-012-025-IR1 |
| 25.4 | -30 | -30.9 | -26.4 | 2.5 | 9 | JKL54-025-030 | JKL54-025-030-IR1 |
| 25.4 | -50 | -51 | -43.8 | 3 | 6.8 | JKL54-025-050 | JKL54-025-050-IR1 |
