zemax can help to design many kinds of optical systems. Here are the basic steps: YY((#"o;l
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1. make spec for your system BR`ygrfe
2. make initial design xM >W2
3. choose glass materials 4R^mI
4. analysize the abration and image... }|OaL*|u
5. modify and optimze them (this is the core of the design). /*FH:T<V
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To do these, you need to study basic knowledge of geometric optics.