E-47-664 12.5mm Dia. x 35mm FL, VIS 0° Coated, Achromatic Lens
E-47664 12.5mm Dia. x 35mm FL, VIS 0° Coated, Achromatic Lens
Diameter (mm): 12.50 +0.0/-0.025
Effective Focal Length EFL (mm): 35.00
Focal Length Tolerance (%): ±2
Back Focal Length BFL (mm): 32.50
Focal Length Specification Wavelength (nm): 587.6
Clear Aperture CA (mm): 11.50
Centering (arcmin): <1
Center Thickness CT 1 (mm): 3.68
Center Thickness CT 2 (mm): 1.50
Center Thickness Tolerance (mm): ±0.2
Radius R1 (mm): 22.94
Radius R2 (mm): -15.54
Radius R3 (mm): -58.84
Edge Thickness ET (mm): 3.98
Surface Quality: 40-20
f/#: 2.8
Numerical Aperture NA: 0.18
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