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Chapter 4:
Aberrations
Abstract
After the rays have been traced exactly through the optical system, we need to determine how much they depart from the perfection of the paraxial region. As we have seen from Fermat's principle and the law of Malus, we can consider these aberrations either in terms of the geometrical ray intercept errors at the image plane, or as optical path length differences.
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CHAPTER 4
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