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23 Nov 2019
A lens that is "optically perfect" is still limited bydiffraction effects. Suppose a lens has a diameter of 130 mm and afocal length of 630 mm.
a. Find the angular width (that is, the angle from the bottom tothe top) of the central maximum in the diffraction pattern formedby this lens when illuminated with 550 nm light.
b. What is the linear width (diameter) of the central maximum atthe focal distance of the lens?
A lens that is "optically perfect" is still limited bydiffraction effects. Suppose a lens has a diameter of 130 mm and afocal length of 630 mm.
a. Find the angular width (that is, the angle from the bottom tothe top) of the central maximum in the diffraction pattern formedby this lens when illuminated with 550 nm light.
b. What is the linear width (diameter) of the central maximum atthe focal distance of the lens?
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Tod ThielLv2
30 May 2019