N-BK7

Focal Length Tolerance (%):

±2

Surface Quality:

60-40

Surface Accuracy:

λ/4

Diameter (mm):

20.00 +0.00/-0.30

Effective Focal Length EFL (mm):

80.00

Radius of Curvature (mm):

160.00

Aperture (f/#):

f/4

Coating:

Protected Aluminum (400-2000nm)

Coating Specification:

R_avg >85% @ 400 - 700nm
R_avg >90% @ 400 - 2000nm

Coating Type:

Metal

Back Surface:

Ground

Center Thickness CT (mm):

3.00

Center Thickness Tolerance (mm):

±0.30

Edge Thickness ET (mm):

3.31

Edges:

Ground

Radius R (mm):

160.0

Type:

Spherical Mirror

Wavelength Range (nm):

400 - 2000

20mm Dia x 80mm Focal Length, Spherical Mirror