zemax can help to design many kinds of optical systems. Here are the basic steps: w_ sA8B
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1. make spec for your system cx(W{O"Jb
2. make initial design Q4&|^RLLG
3. choose glass materials 7 ?O~3
4. analysize the abration and image... m<cvx3e
5. modify and optimze them (this is the core of the design). 1p[Z`m*9
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To do these, you need to study basic knowledge of geometric optics.