The PAC070 Visible Achromatic Doublet Lens is a 400 to 700 nm antireflection coated, 1.5 inch (38.1 mm) diameter, BaF N10 and SF 10 precision achromatic doublet lens with an effective focal length of 100 mm. This achromat is computer designed to effectively minimize spherical aberration and coma when operating at infinite conjugate ratio, yielding smaller focused spot sizes. Unlike singlet lenses, this results in a constant focal length independent of aperture and far better off-axis performance. Achromats are superior to singlet lenses for monochromatic applications at any visible wavelength.
| Model | PAC073 |
|---|---|
| Lens Shape | Plano-Convex |
| Lens Type | Achromatic Doublet |
| Effective Focal Length | 100.0 mm |
| Diameter | 1.5 in. (38.1 mm) |
| Lens Material | BaFN10/SF10 |
| Antireflection Coating | 400-700 nm (MgF2) |
| Surface Quality | 40-20 scratch-dig |
| Clear Aperture | ≥central 90% of diameter |
| Diameter Tolerance | +0/-0.1 mm |
| Te | 9.3 mm |
| Edge Thickness (Te) Tolerance | Nominal Value |
| Center Thickness (Tc) | 12.4 mm |
| Tc1 | 9.2 mm |
| Tc2 | 3.2 mm |
| Center Thickness (Tc) Tolerance | ± 0.2 mm |
| Focal length tolerance | ±2 % |
| FFL | 99.6 mm |
| BFL | 92.9 mm |
| f/# | 2.6 |
| R | 67.895 mm |
| R2 | -43.412 mm |
| R3 | -485.150 mm |
| Wavelength Range | 400 to 700 nm |
| Surface Accuracy, Irregularity (lambda) | λ/4 |
| Cleaning | Non-abrasive method, acetone or isopropyl alcohol on lens tissue recommended |
