zemax can help to design many kinds of optical systems. Here are the basic steps: }N*>QR5K
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1. make spec for your system c:l]=O
2. make initial design !4rPv\
3. choose glass materials e2C<PGUUB
4. analysize the abration and image... do-c1;M
5. modify and optimze them (this is the core of the design). ?v-1zCls
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To do these, you need to study basic knowledge of geometric optics.