Achromatic Lenses

  • 40mm Dia.x350 EFL, Doublet lens

40mm Dia.x350 EFL, Doublet lens

PRODUCT DESCRIPTION

Part NumberLAD35040
Diameter (mm):40Diameter Tolerance (mm):+0.01/-0.10
Effective Focal Length EFL (mm):350Back Focal Length BFL (mm):347.49
Substrate:N-BK7/N-SF5 or or equivalentSurface Quality:60-40
Power (P-V) @ 632.8nm:1.5λIrregularity (P-V) @ 632.8nm:0.5 Waves
Focal Length Tolerance (%):±2%Centering (arcmin):< 3 minutes
Center Thickness CT (mm):7.3Center Thickness Tolerance (mm):±0.2
Edge Thickness ET (mm):5.9Clear Aperture CA (mm):>= 90% of Diameter
Type:Achromats Bevel: Protective bevel as needed