Question

Calculate the positions of the principal planes and focal points of a thick convex-concave glass lens if the curvature radius of the convex surface is equal to R₁ = 10.0 cm and of the concave surface to R₂ = 5.0 cm and the lens thickness is d = 3.0 cm.

Answer 1

The optical power of first convex surface is,

and the optical power of second concave surface is,

So, the optical power of the system,

Now , the distance of the primary principal plane from the vertex of convex surface is given as, 

and the distance of secondary principal plane from the vertex of second concave surface,