Lensmaker's Equation

\frac{1}{f} = (n-1)\left(\frac{1}{R_1} - \frac{1}{R_2}\right)

Relates the focal length of a lens to its refractive index and surface curvatures.

Variables

Focal length

Refractive index of lens

unitless

R_1

Radius of first surface

R_2

Radius of second surface

0/5000