zemax can help to design many kinds of optical systems. Here are the basic steps: (2'q~Z+>'
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1. make spec for your system wiM-TFT~
2. make initial design N3|aNQ=X0
3. choose glass materials BF(Kaf;<t.
4. analysize the abration and image... ZWy,NN1
5. modify and optimze them (this is the core of the design). 4@"n7/<
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To do these, you need to study basic knowledge of geometric optics.