| Focal Length at 589 nm | ±2 % |
| Material | Optical crown and flint glasses or equivalent |
| Wavelength | 4002500 nm |
| Transmission | T>95% visible, T>92% at 1064 nm |
| Design Wavelengths | 486.1, 546.1, and 656.3 nm |
| Surface Accuracy | ≤3 fringes (1.5 λ) power, 1/2 fringe (λ/4) irregularity at 632.8 nm over the clear aperture |
| Clear Aperture | ≥central 90% of diameter |
| Surface Quality | 40-20 scratch-dig |
| Centration, Spherical Lenses | ≤3 arc min |
| Diameter Tolerance | +0/-0.1 mm |
| Center Thickness (Tc = Tc1 + Tc2) Tolerance | ±0.2 mm for lenses <50.8 mm diameter ±0.4 mm for lenses ≥50.8 mm diameter ±0.3 mm for PAC076 |
| Edge Thickness (Te) | Nominal Value |
| Antireflection Coating | Single-layer MgF2: Ravg <1.5%, Rmax <2.5% per surface, 400700 nm; Multi-layer AR.14: Ravg <0.5%, Rmax <1.5% per surface, 430700 nm |
| Optimum Field of View | ≤2° |
| Temperature | 125 °C, cement limitation |
| Durability | MIL-M-13508, MIL-C-675C, MIL-C-14806 |
| Orientation | Steepest convex surface should face the infinite conjugate |
| Cleaning | Non-abrasive method, acetone or isopropyl alcohol on lens tissue recommended (Unknown type Newport.Step.Product.XRefElement) Cemented optic, do not immerse in a solvent |
| Damage Threshold | 750 W/cm2 CW, 0.75 J/cm2 with 10 nsec pulses, typical, cement limitation |