zemax can help to design many kinds of optical systems. Here are the basic steps: HI7]%<L
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1. make spec for your system 0LZ=`tI
2. make initial design `s#sE.=o
3. choose glass materials G)4ZK#wz
4. analysize the abration and image... j#4+-
5. modify and optimze them (this is the core of the design). (xjqB{U
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To do these, you need to study basic knowledge of geometric optics.