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4.4. DEFOCUS ABERRATION - Telescope Optics
Taking W=1/6, for λ/6 wave P-V of spherical aberration, and λ=0.00055mm, allowable defocus range in an f/10 system (so F=10) is 0.169mm (note that "defocus range" in this context …
Understanding the Defocus Curve: It’s All About the Optics
Defocus curves are created by presenting a series of positive- and negative-powered lenses in front of a patient’s eye and measuring the degree of “defocus” that is induced. The zero …
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