Hi, allow me using English to reply to your enquiry as it's not convenient for me to type Chinese. LXK+WB/s q-!m|<Z Regarding your question, I would suggest you defining some parameters first before air it out; E4{^[=} Ql\ GL" 1. What wavelength(s) are you operating? nKHyq\ 2. How many components could you use? (any limitation?) 54'z"S:W 3. Do you prefer using off-shelf lens to customised lens? Or do you have budget for customised lens? h,#AY[ Q JgxOxZS`@ There are some examples in ZEMAX 2^:5aABQ & j>`H: 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. 0#yo\McZ 9wI1/> hope this helps :)