zemax can help to design many kinds of optical systems. Here are the basic steps: ]Kjt@F";
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1. make spec for your system O{c#&/ .K
2. make initial design <f:(nGj
3. choose glass materials Zp[>[1@+
4. analysize the abration and image... Q'^'G>MBJ
5. modify and optimze them (this is the core of the design). ul_E{v
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To do these, you need to study basic knowledge of geometric optics.