zemax can help to design many kinds of optical systems. Here are the basic steps: ^tSwA anP\
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1. make spec for your system (e~9T MY
2. make initial design "M+I$*]
3. choose glass materials g18zo~LZ
4. analysize the abration and image... 6Ad UlPM
5. modify and optimze them (this is the core of the design). )Ghw!m
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To do these, you need to study basic knowledge of geometric optics.