zemax can help to design many kinds of optical systems. Here are the basic steps: e$4 5 OL
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1. make spec for your system r,A750P^
2. make initial design q!$?G]-%
3. choose glass materials wtndXhVC4>
4. analysize the abration and image... pe Y( 4#
5. modify and optimze them (this is the core of the design). "$;=8O5O
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To do these, you need to study basic knowledge of geometric optics.