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E-49-343 18mm Dia. x 50mm FL VIS-NIR Coated, Achromatic Lens

Fosco Connect Part No.: E-49343

  • $ 162.00 or



E-49343 18mm Dia. x 50mm FL VIS-NIR Coated, Achromatic Lens

Product VIS-NIR Coating Curve

Product ISO

Product Drawing

Diameter (mm): 18.00 +0.0/-0.025
Effective Focal Length EFL (mm): 50.00
Focal Length Tolerance (%): ±2
Back Focal Length BFL (mm): 45.24
Focal Length Specification Wavelength (nm): 587.6
Clear Aperture CA (mm): 17.00
Centering (arcmin): <1
Center Thickness CT 1 (mm): 5.00
Center Thickness CT 2 (mm): 2.30
Center Thickness Tolerance (mm): ±0.2
Radius R1 (mm): 27.12
Radius R2 (mm): -25.66
Radius R3 (mm): -538.70
Edge Thickness ET (mm): 5.69

Surface Quality: 40-20
f/#: 2.78
Numerical Aperture NA: 0.18
Coating: VIS-NIR (400-1000nm)
Coating Specification:
Rabs ≤0.25% @ 880nm
Ravg ≤1.25% @ 400 - 870nm
Ravg ≤1.25% @ 890 - 1000nm
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 - 1000
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