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%---------------------------------------------------------------
% Returns the ABCD matrix for propagation through a thin lens.
%
% SYNTAX: abcd=lens(f);
%
%
% f = lens focal length
%
% abcd = | 1 0 |
% |-1/f 1 |
%
%---------------------------------------------------------------
% SYNTAX: abcd=lens(f);
%---------------------------------------------------------------
function abcd=lens(f)
abcd=[
1 0
-1/f 1
];
|
