The above aperture is the stop in an imaging system. It is circularly symmetric and consists of a central circle surrounded by an annulus. The associated pupil function is given by P(u, v) = Az exp(je_) circ () + [A] exp(j#1) - Az exp(je_)] circ( afey R 2 R2 A1 exp (jo]). OSP=If R1 A2 exp(je2). Rg Af 0, Rip. af where the dimensions of R, and Ry are millimeters, p = vu2 + 12, A, and A, are arbitrary transmission coefficients between 0 and 1, and 6 and of are arbitrary phases between 0 and 2n. a. What is the coherent spread function pp(xx,yy)? b. If f =0.50 mm, 1=500 nm, and R1=21 mm, what is the highest spatial frequency (in mm-1) the pupil function can pass? What is the highest spatial frequency the OTF can pass