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Calculate the focal length, radius of curvature, and thickness of a lens based on the prescription and refractive index

Author: kegasaExecutions: 48
TOP/Shared Formulas (Science)/Physics (Sound & Light)

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For a lens with a diameter D, a refractive index N, and a power of SPH, where the radii of curvature R on both surfaces are equal, find the focal length f and
the radius of curvature R and central thickness t for a convex lens, or the radius of curvature R and peripheral thickness for a concave lens.
f = 1000/SPH;
R = f*(2*(N-1));
t = 2*R*(1-cos(atan(D/2/R)));
print(f);
print(R);
print(t);
Lens Power D SPH
Refractive Index N
Lens diameter D
mm
Lens focal length f mm
Radius of curvature R of the lens mm
Lens thickness t mm

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