HOLOGRAPHIC STEPWISE ZOOM LENS

摘要

ABSTRACT OF THE DISCLOSUREA holographic optical element that performs a zoom operationin a stepwise fashion while undergoing a simple rotation. Each of fourholographic plates is produced by a different optical arrangement. Eachplate contains a number of exposures arranged in a ring. The four platesare paired with the exposures in the ring of one plate in proper registerwith the exposures in the second plate. The resulting pair of hologramsform on-axis holographic lenses. The two pair of combined to producethe holographic zoom lens.