%無(wú)中間像，焦距輸入為負(fù)數(shù) ]i8t  
function sjr=nfdre(~) Y$W)JWMY`  
Z5[g[Q  
%系統(tǒng)焦距及各鏡間距輸入，間距取負(fù)正負(fù) 'v5q/l  
LB^xdMXi  
f=input('f:'); E|_}?>{R  
d1=input('d1:'); {X-a6OQj  
d2=input('d2:'); l_zTpyOZ  
d3=input('d3:'); 0+KSD{  
)<.y{_QUN  
A=f^2/(d3*d2)-f/d1; ~\ v"xV  
B=f/d1-f/d2+f/d1+f/d3-d3*f/(d3*d2); (SByN7[gb  
C=d3/d2-f/d1; G'{&*]Z\:  
G}@a]EGm  
a1=(-B+sqrt(B^2-4*A*C))/(2*A);%α1 -f"{%<Q  
a2=d3/(a1*f);%α2 }+K=>.  
b2=a1*(1-a2)*f/d2;%β2 Twk<<  
b1=(1-a1)*f/(d1*b2);%β1 S]Aaf-X_  
[ZS.6{vr  
rGay~\  
%曲率半徑 }l_8~/9  
~Jlq.S'  
R1=2*f/(b1*b2) 6+:;Mb_S  
R2=2*a1*f/(b2*(1+b1)) ]N:Wt2   
R3=2*a1*a2*f/(1+b2) @IOl0db  
&5QvUn
  
A1=b2^3*(a1-1)*(1+b1)^3; KIY9?B=+  
B1=-(a2*(a1-1)+b1*(1-a2))*(1+b2)^3; Q|G|5X  
C1=(a1-1)*b2^3*(1+b1)*(1-b1)^2-(a2*(a1-1)+b1*(1-a2))*(1+b2)*(1-b2)^2-2*b1*b2; j? Vs"d|  
P[jh^!<j  
A2=b2*(a1-1)^2*(1+b1)^3/(4*a1*b1^2); TNF  
B2=-(a2*(a1-1)+b1*(1-a2))^2*(1+b2)^3/(4*a1*a2*b1^2*b2^2); `tl