zemax can help to design many kinds of optical systems. Here are the basic steps: ~7 `x9MUc
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1. make spec for your system r`;C9#jZ
2. make initial design Y~vTFOI
3. choose glass materials ^F" *;8$
4. analysize the abration and image... v,D_^?] @
5. modify and optimze them (this is the core of the design). Ap!UX=HBb
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To do these, you need to study basic knowledge of geometric optics.