zemax can help to design many kinds of optical systems. Here are the basic steps: `G?qY8
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1. make spec for your system ,[`$JNc
2. make initial design <'&F;5F3V
3. choose glass materials `*yAiv>
4. analysize the abration and image... #mLuU
5. modify and optimze them (this is the core of the design). ((|IS[
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To do these, you need to study basic knowledge of geometric optics.