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Achromatic Lens
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40mm Dia.x350 EFL, Doublet lens
Changchun Long Ze Precision Optics Co., Ltd Time：2018-11-22
| Part Number | LAD35040 | ||
| Diameter (mm): | 40 | Diameter Tolerance (mm): | +0.01/-0.10 |
| Effective Focal Length EFL (mm): | 350 | Back Focal Length BFL (mm): | 347.49 |
| Substrate: | N-BK7/N-SF5 or or equivalent | Surface Quality: | 60-40 |
| Power (P-V) @ 632.8nm: | 1.5λ | Irregularity (P-V) @ 632.8nm: | 0.5 Waves |
| Focal Length Tolerance (%): | ±2% | Centering (arcmin): | < 3 minutes |
| Center Thickness CT (mm): | 7.3 | Center Thickness Tolerance (mm): | ±0.2 |
| Edge Thickness ET (mm): | 5.9 | Clear Aperture CA (mm): | >= 90% of Diameter |
| Type: | Achromats | Bevel: | Protective bevel as needed |
350
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