zemax can help to design many kinds of optical systems. Here are the basic steps: =uKGh`^[
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1. make spec for your system *UVjN_na5
2. make initial design `K[:<p}
3. choose glass materials m(JFlO
4. analysize the abration and image... :H[E
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5. modify and optimze them (this is the core of the design). EFeG[bxM
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To do these, you need to study basic knowledge of geometric optics.