N.A. Calculator

Acceptance Angle Calculator     
©
2003 FTI All Rights reserved
Core Glass
N1
Clad
Glass
N2

Numerical Aperature
Critical
Angle
(Degrees)

You can use this calculator to identify the numerical aperature and the acceptance angle of any glass combination.

N1 is always larger than N2. Therefore, if your result is "NaN", you have reversed the values. Please input again.

If you already know the Numerical Aperature of the glass combination, and you'd like to identify the acceptance angle, click here.


FTI Products