The pupil of an imaging system is given by trixdrecty The im

The pupil of an imaging system is given by tri(x/d)rect(y). The imaging system has a focal length f and the image is located at the back focal plane. The wavelength of illumination is .

a. Write an expression for the coherent transfer function of the system.

b. Assume that the input to the coherent system has a modulation of 1/2 in the x direction at a spatial frequency of d/2f. Sketch the modulation of the input and the output.

c. Write an expression for the incoherent point spread function of the system.

d. For the value of d =1, which direction (X or Y) do you expect to transmit the highest spatial frequency? Which direction do you expect will experience the most blur? Why?

Solution

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