zemax can help to design many kinds of optical systems. Here are the basic steps: _qg)^M 6
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1. make spec for your system C:qb-10|A
2. make initial design i{8T 8
3. choose glass materials E DuLgg@
4. analysize the abration and image... #%CbZw@hJ9
5. modify and optimze them (this is the core of the design). ^dB~#A1
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To do these, you need to study basic knowledge of geometric optics.