Hi, allow me using English to reply to your enquiry as it's not convenient for me to type Chinese. `UTPX'Vz 8u2k-_9 Regarding your question, I would suggest you defining some parameters first before air it out; G Ln=*Dh# N< 9 c/V 1. What wavelength(s) are you operating? 1o`1W4Q 2. How many components could you use? (any limitation?) z.I c?Wz7 3. Do you prefer using off-shelf lens to customised lens? Or do you have budget for customised lens? AP=h*1udk n.&7lg^X There are some examples in ZEMAX A$=n y6 p L"{Uqi 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. k1<^ Ept hBjU(}\3 hope this helps :)