zemax can help to design many kinds of optical systems. Here are the basic steps: D7pQWlN\
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1. make spec for your system 53uptQ{
2. make initial design |u`YT;`!"-
3. choose glass materials iJ58RY
4. analysize the abration and image... u*l>)_HD
5. modify and optimze them (this is the core of the design).
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To do these, you need to study basic knowledge of geometric optics.