zemax can help to design many kinds of optical systems. Here are the basic steps: o5O#vW2Il&
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1. make spec for your system )5JFfp)#
2. make initial design 2'\H\|
3. choose glass materials oj<gD
4. analysize the abration and image... SrJGTuXg
5. modify and optimze them (this is the core of the design). HTS0s\R$
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To do these, you need to study basic knowledge of geometric optics.