zemax can help to design many kinds of optical systems. Here are the basic steps: =7mR#3yt
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1. make spec for your system
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2. make initial design $0Y&r]'
3. choose glass materials Mf&W<n^j
4. analysize the abration and image... p\8cl/~
5. modify and optimze them (this is the core of the design). va8V{q@t'
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To do these, you need to study basic knowledge of geometric optics.