zemax can help to design many kinds of optical systems. Here are the basic steps: _hgGF9
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1. make spec for your system !D!"ftOm
2. make initial design XqGa]/;}
3. choose glass materials l,5isq
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4. analysize the abration and image... #\ECQF
5. modify and optimze them (this is the core of the design). )Y`ybADd3
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To do these, you need to study basic knowledge of geometric optics.