Question: 2. Consider an imaging system using a lens with focal length of 8 cm having an image plane 10 cm behind the lens. Assume

2. Consider an imaging system using a lens with focal length of

2. Consider an imaging system using a lens with focal length of 8 cm having an image plane 10 cm behind the lens. Assume the lens diameter is 1 cm. a) How far in front of the lens on the optical axis of the system must we place a point to get an image without blur? b) Suppose the image plane has an active area of 3cm 3cm which is partitioned into 500 500 square potential wells (pixels). Suppose the point in part a) images without blur to the center of a potential well. How far can we move this point in focus towards the lens before the image of the point extends to more than one potential well?

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