title: Electrically switchable diffractive optical element for image processing.
abstract: An electrically switchable diffractive optical element has been built based on a computer-generated phase hologram and a liquid-crystal layer. The design of the diffractive optical element and the fabrication and performance of the device are discussed. The application of the device in a machine vision system for optical surface inspection is shown.
authors.forename: M
authors.initials: M
authors.lastname: Stalder
authors.forename: P
authors.initials: P
authors.lastname: Ehbets