zemax can help to design many kinds of optical systems. Here are the basic steps: qajZ~oB{
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1. make spec for your system Rk7F;2
2. make initial design U[02$gd0l
3. choose glass materials ~TsRUT
4. analysize the abration and image... {kw%7}!
5. modify and optimze them (this is the core of the design). :"MHmm=uU8
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To do these, you need to study basic knowledge of geometric optics.