DIFFRACTIVE OPTICAL ELEMENT AND METHOD FOR THE DESIGN OF A DIFFRACTIVE OPTICAL ELEMENT

摘要

A diffractive optical element (DOE) is designed to implement both a collimation function with respect to an input divergent beam and a beam shaping function with respect to an output divergent beam. The phase designs of the collimation function and the beam shaping function are independently produced in the phase domain. These phase designs are then combined using a phase angle addition of the individual functions and wrapped between 0 and 2π radians. The diffractive surface of the DOE is then defined from the wrapped phase angle addition of the individual functions.

主权项

1. An optical system, comprising:
a collimating and beam shaping diffractive optical element configured to modify an input divergent beam and produce an output divergent beam; wherein the collimating and beam shaping diffractive optical element comprises a diffractive surface having a design which both collimates the input divergent beam and shapes the collimated input divergent beam into the output divergent beam to form an output field with a desired output intensity distribution.