zemax can help to design many kinds of optical systems. Here are the basic steps: AL;"S;8
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1. make spec for your system 7Ct m({I-
2. make initial design 'i,<j
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3. choose glass materials rf~Ss<
4. analysize the abration and image... {R#nGsrt;
5. modify and optimze them (this is the core of the design). ka'MF;!rc
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To do these, you need to study basic knowledge of geometric optics.