E-45-105 40mm Dia. x 80mm FL, MgF2 Coated, Achromatic Doublet Lens
E-45105 40mm Dia. x 80mm FL, MgF2 Coated, Achromatic Doublet Lens
Diameter (mm): 40.00 +0.0/-0.025
Effective Focal Length EFL (mm): 80.00
Focal Length Tolerance (%): ±2
Back Focal Length BFL (mm): 70.75
Focal Length Specification Wavelength (nm): 587.6
Clear Aperture CA (mm): 39.00
Centering (arcmin): <1
Center Thickness CT 1 (mm): 12.07
Center Thickness CT 2 (mm): 4.00
Center Thickness Tolerance (mm): ±0.2
Radius R1 (mm): 53.76
Radius R2 (mm): -36.73
Radius R3 (mm): -435.85
Edge Thickness ET (mm): 11.75
Surface Quality: 40-20
f/#: 2.00
Numerical Aperture NA: 0.25
Coating: MgF2 (400-700nm)
Coating Specification: Ravg ≤1.75% @ 400 - 700nm
Power (P-V) @ 632.8nm: 1.5λ
Irregularity (P-V) @ 632.8nm: λ/4
Bevel: Protective bevel as needed
Type: Achromatic Lens
Wavelength Range (nm): 400 - 700