Patent ID: 7245798

Claim:
Apparatus for redirecting a plurality of optical beams emanating from a respective plurality of optical transmitters arranged in a pattern along a first dimension and a second dimension, comprising: a plurality of first refractive regions; each first refractive region intercepting the optical beams emanating from an associated group of optical transmitters occupying a common position in the first dimension; each particular first refractive region having a fixed angular orientation with respect to each other first refractive region and imparting to the intercepted optical beams a fixed angular deflection in the first dimension, the fixed angular deflection in the first dimension being a function of the common position in the first dimension occupied by the optical transmitters from which emanate the optical beams intercepted by the particular first refractive region; a plurality of second refractive regions; each second refractive region intercepting the optical beams emanating from a second associated group of optical transmitters occupying a common position in the second dimension; each particular second refractive region having a fixed angular orientation with respect to each other second refractive region and imparting to the intercepted optical beams a fixed angular deflection in the second dimension, the fixed angular deflection in the second dimension being a function of the common position in the second dimension occupied by the optical transmitters from which emanate the optical beams intercepted by the particular second refractive region; the apparatus being implemented as an integral formation having a front face and a back face, wherein the first refractive regions appear on one of the front and back face and wherein the second refractive regions appear on the other of the front and back face.