zemax can help to design many kinds of optical systems. Here are the basic steps: `l`)Cs;a
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1. make spec for your system =?gDM[t^
2. make initial design dhmZ3 ~cW>
3. choose glass materials `_5{:
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4. analysize the abration and image... ^Jdji:
5. modify and optimze them (this is the core of the design). N3QDPQ
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To do these, you need to study basic knowledge of geometric optics.