Diameter (mm):

20.00 +0.00/-0.10

Effective Focal Length EFL (mm):

17.99 @ 780nm

Numerical Aperture NA:

0.56

Back Focal Length BFL (mm):

14.00

S-LAH64

Aspheric Design Wavelength (nm):

780

Asphere Figure Error, RMS @ 632.8nm:

1.2λ

Coating:

VIS+ (350-700nm)

Coating Specification:

R_avg < 0.5% @ 350 - 700nm @ 0° ±30° AOI
R_abs < 1.5% @ 350 - 700nm @ 0° ±30° AOI

Centering (arcmin):

<3

Surface Quality:

40-20

Clear Aperture CA (mm):

18

Edge Thickness ET (mm):

3.37

Center Thickness CT (mm):

7.10 ±0.10

f/#:

0.90

Bevel:

Protective bevel as needed

Shape of Back Surface:

Plano

Type:

Aspheric Lens

Wavelength Range (nm):

350 - 700

Conjugate Distance:

Infinite

Power (diopters):

55.59

20mm Dia., 0.56 NA, 350-700nm Coated, NIR Aspheric Lens

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