Diameter (mm):

25.40 +0.0/-0.025

Effective Focal Length EFL (mm):

-50.00

N-BK7

f/#:

2

Numerical Aperture NA:

0.25

Coating:

NIR II (750-1550nm)

Type:

Cylinder Lens, Plano-Concave

Wavelength Range (nm):

750 - 1550

Back Focal Length BFL (mm):

-51.98

Bevel:

Protective bevel as needed

Center Thickness CT (mm):

3.00

Center Thickness Tolerance (mm):

±0.1

Clear Aperture CA (mm):

22.86

Coating Specification:

R_abs ≤1.5% @ 750 - 800nm
R_abs ≤1.0% @ 800 - 1550nm
R_avg ≤0.7% @ 750 - 1550nm

Edge Thickness ET (mm):

6.23

Radius R₁ (mm):

25.84

Surface Quality:

40-20

Power (P-V) @ 632.8nm:

1.5λ

Irregularity (P-V) @ 632.8nm:

λ/4

Plano Axis Wedge (arcmin):

<5

Power Axis Wedge (arcmin):

<5

25.4mm x -50mm FL, NIR II Imaging Grade PCV Cylinder Lens

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