Double Concave Cylindrical Lens
描述
Specifications
| Material | N-bk7, H-K9L, Fused Silica, N-SF10, Silicon, CaF2, Sapphire etc. | ||
| Length | 2~300mm | Centration | ＜3 arc min |
| Height | 2 ~300mm | Clear Aperture | >90% |
| Radius | > 1.5mm | Flatness (per 25mm at 632.8nm) | <1.5Lambda (General), <1/4Lambda (High Precision) |
| Center Thickness | > 0.5mm | Irregularity of Fringes | 0.2-0.5 Lambda |
| Focal Length | 3~3000mm | Surface Quality(S/D) | 60/40, 40/20 or better |
| Size Tolerance(mm) | +/-0.1mm, +/-0.05mm | Chamfer | <0.25mmx45 degree |
| Center Thickness Tolerance(mm) | +/-0.1mm, +/-0.05mm | Coating | Uncoated, AR, BBAR, Reflective |
| Focal Length Tolerance(mm) | ±1% | Design Wavelength | 632.8 nm |
