zemax can help to design many kinds of optical systems. Here are the basic steps: h|.{dv
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1. make spec for your system =%d.wH?dZ/
2. make initial design lmYyaui
3. choose glass materials ,VZ<r5NT
4. analysize the abration and image... 5P[urOvV
5. modify and optimze them (this is the core of the design). {yM@3v~
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To do these, you need to study basic knowledge of geometric optics.