zemax can help to design many kinds of optical systems. Here are the basic steps: 01N]|F:
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1. make spec for your system 6snDv4
2. make initial design Tbf@qid e
3. choose glass materials hMcSB8 ?
4. analysize the abration and image... O
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5. modify and optimze them (this is the core of the design). s,5SWdb\v
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To do these, you need to study basic knowledge of geometric optics.