zemax can help to design many kinds of optical systems. Here are the basic steps: n"vl%!B
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1. make spec for your system Kdh(vNB>
2. make initial design p8K4^H
3. choose glass materials @'L/]
4. analysize the abration and image... *#1&IJPI
5. modify and optimze them (this is the core of the design). wH=
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To do these, you need to study basic knowledge of geometric optics.