Hamiltonian Optics Basics: Explained for Beginners

[UchihaClan13]

Alright I was browsing through feynman's lectures VOL.1
When I came across Hamiltonian Optics
I am not quite able to understand it in its entirety
Could someone explain the basics of hamiltonian optics to me
Help would be much appreciated !

 

[Andy Resnick]

Application of Hamilton's principle to (geometric) optics shows the close analogy between paths of light rays and paths of moving particles; they both minimize the action. That's really about it.

 

[UchihaClan13]

You mean there really isn't anything else
No gross approximations and suchlike??