zemax can help to design many kinds of optical systems. Here are the basic steps: wF|0n t
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1. make spec for your system :V&N\>Wo
2. make initial design A[u)wX^`f^
3. choose glass materials 1% $d D2
4. analysize the abration and image...
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5. modify and optimze them (this is the core of the design). ksB
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To do these, you need to study basic knowledge of geometric optics.