E-49-776 12.7mm Dia. x 44.5mm FL, VIS 0° Coated, Achromatic Lens
E-49776 12.7mm Dia. x 44.5mm FL, VIS 0° Coated, Achromatic Lens
Diameter (mm): 12.70 +0.0/-0.025
Effective Focal Length EFL (mm): 44.45
Focal Length Tolerance (%): ±2
Back Focal Length BFL (mm): 41.98
Focal Length Specification Wavelength (nm): 587.6
Clear Aperture CA (mm): 11.70
Centering (arcmin): <1
Center Thickness CT 1 (mm): 3.00
Center Thickness CT 2 (mm): 2.00
Center Thickness Tolerance (mm): ±0.2
Radius R1 (mm): 28.49
Radius R2 (mm): -20.03
Radius R3 (mm): -81.41
Edge Thickness ET (mm): 4.04
Surface Quality: 40-20
f/#: 3.5
Numerical Aperture NA: 0.14
Coating: VIS 0° (425-675nm)
Coating Specification: Ravg ≤0.4% @ 425 - 675nm
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): 425 - 675