Homework #3. 1. Find Fourier transforms of the following functions. Sketch the intensity distribution in the plane of the transparency and the focal plane of a lens. (Use λ= 1μm and lens f = 100cm.) a) t(x,y) = δ(x-y) b) t(x,y) = δ(x+a) + δ(x-a), a = 1mm c) t(x,y) = δ(x+a) + jδ(x-a), a = 1mm where δis a δ-function. 2. Optical FT system is designed to display a FT of 2-D functions with spatial frequencies between 20 and 200 lines/mm. What should be the focal length of the lens to obtain separation of 9cm between highest and lowest spatial frequencies in
This is the end of the preview. Sign up
access the rest of the document.
This note was uploaded on 04/02/2011 for the course ECE 264 taught by Professor Song during the Spring '11 term at UCSB.