Diopter of a lens 2
Puntos:10
The figure illustrates qualitatively a
corrective lens of -3.50 diopters.
R
7.68 cm
The lens material is CR-39 monomer, with
an index of refraction of 1.499. Calculate
R, the radius of curvature of the outer
surface for the lens. Note: the diopter is a
measure of the refractive power of a lens,
and equals the reciprocal of the focal
length in meters. (Example: for +3
diopters, f=0.333 meters.)