Hi, allow me using English to reply to your enquiry as it's not convenient for me to type Chinese. ]a%Kn]HI&2 x}[` - Regarding your question, I would suggest you defining some parameters first before air it out; g !8lW #e=^[E-yE 1. What wavelength(s) are you operating? M*HG4(n0 2. How many components could you use? (any limitation?) >dGYZfqD 3. Do you prefer using off-shelf lens to customised lens? Or do you have budget for customised lens? xd.C&Dx5 /Rz,2jfRx' There are some examples in ZEMAX [P,nW/H cA\W|A) Under Program Files\ZEMAX\Samples\Sequential\Objectives, you should be able to find some examples. I believe that with properly selection of variables you should be able to achieve an optical solution for the performance target you specified. 7L6M#B[)e5 # 0(\s@r. hope this helps :)