E-37-431 25mm Dia., 0.25 Numerical Aperture, Uncoated, Precision Aspheric Lens
E-37431 25mm Dia., 0.25 Numerical Aperture, Uncoated, Precision Aspheric Lens
Diameter (mm): 25.00 +0.00/-0.025
Effective Focal Length EFL (mm): 50.00 @ 587.6nm
Numerical Aperture NA: 0.25
Back Focal Length BFL (mm): 45.23
Aspheric Design Wavelength (nm): 587.6
Coating: Uncoated
Centering (arcmin): <3
Surface Quality: 40-20
Clear Aperture CA (mm): 24.00
Edge Thickness ET (mm): 4.14
Center Thickness CT (mm): 7.24 ±0.10
f/#: 2.00
Bevel: Protective bevel as needed
Shape of Back Surface: Plano
Wavelength Range (nm): 350 - 2200
Conjugate Distance: Infinite
Asphere Figure Error, RMS @ 632.8nm: 0.4λ