zemax can help to design many kinds of optical systems. Here are the basic steps: bP4}a!t+n
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1. make spec for your system Xu|2@?l9
2. make initial design {~XnmBs
3. choose glass materials @eq.&{&
4. analysize the abration and image... EIPX q
5. modify and optimze them (this is the core of the design). ,}wFQ9*|W
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To do these, you need to study basic knowledge of geometric optics.