Hi, allow me using English to reply to your enquiry as it's not convenient for me to type Chinese. 8s&2 gn 1 qFGB'mIrFz Regarding your question, I would suggest you defining some parameters first before air it out; GHqBnE{B aliQ6_ 1. What wavelength(s) are you operating? > fhSaeN 2. How many components could you use? (any limitation?) w-8)YJ Y 3. Do you prefer using off-shelf lens to customised lens? Or do you have budget for customised lens? KXDz'9_ pIrv$^ There are some examples in ZEMAX 7a27^b jFS 'I*1+ 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. $R3.yX=[\ !c v6 #: hope this helps :)