zemax can help to design many kinds of optical systems. Here are the basic steps: j55_wx@cA
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1. make spec for your system }[eUAGhDU
2. make initial design b]u=Iza
3. choose glass materials ~3s?.[}d
4. analysize the abration and image... sK%b16#
5. modify and optimze them (this is the core of the design). Vs"b
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To do these, you need to study basic knowledge of geometric optics.