製品の詳細
| Part Number | LAD17040 | ||
| Diameter (mm): | 40 | Diameter Tolerance (mm): | +0.01/-0.10 |
| Effective Focal Length EFL (mm): | 167.7 | Back Focal Length BFL (mm): | 164.28 |
| Substrate: | N-BK7/N-SF2 or or equivalent | Surface Quality: | 60-40 |
| Power (P-V) @ 632.8nm: | 1.5λ | Irregularity (P-V) @ 632.8nm: | 0.25 Waves |
| Focal Length Tolerance (%): | ±2% | Centering (arcmin): | < 3 minutes |
| Center Thickness CT (mm): | 10.3 | Center Thickness Tolerance (mm): | ±0.2 |
| Edge Thickness ET (mm): | 7.5 | Clear Aperture CA (mm): | >= 90% of Diameter |
| Type: | Achromats | Bevel: | Protective bevel as needed |
