Diameter (mm):

9.00 +0.0/-0.025

Effective Focal Length EFL (mm):

-18.00

N-BK7

f/#:

2.00

Numerical Aperture NA:

0.25

Coating:

MgF₂ (400-700nm)

Type:

Double-Concave Lens

Wavelength Range (nm):

400 - 700

Back Focal Length BFL (mm):

-18.49

Bevel:

Protective bevel as needed

Center Thickness CT (mm):

1.50

Center Thickness Tolerance (mm):

±0.05

Centering (arcmin):

<1

Clear Aperture CA (mm):

8.1

Coating Specification:

R_avg ≤1.75% @ 400 - 700nm

Edge Thickness ET (mm):

2.45

Focal Length Specification Wavelength (nm):

587.6

Focal Length Tolerance (%):

±1

Radius R₁=-R₂ (mm):

-18.86

Surface Quality:

40-20

10 J/cm² @ 532nm, 10ns

Power (P-V) @ 632.8nm:

1.5λ

Irregularity (P-V) @ 632.8nm:

λ/4

9mm Dia. x -18mm FL, MgF₂ Coated, Double-Concave Lens

Regulatory Compliance

產品系列說明

9mm Dia. x -18mm FL, MgF2 Coated, Double-Concave Lens

Can't find what you need?

Regulatory Compliance

產品系列說明

9mm Dia. x -18mm FL, MgF₂ Coated, Double-Concave Lens