- single lens
- refractive index n=1.53
- if object placed 70cm, find the radii of curvature for the two surfaces of the lens which would minimise spehrical aberration
what i got from my notes
refraction at a spherical surface
this is after using the third order theory
The Attempt at a Solution
i tried to make another equation for the other side of the refractive surface and then added them together,
and also, tried to use r= infinity because i read that plano-convex can reduce SA.
but still i could get it on what kind of value that could show me when SA is minimised. and also, i couldn't get rid value for h, which the value is not given.
is minimising SA is to get the complete thins lens equation from the third order theory??