A VARIABLE POWER-SYSTEM WITH HOLOGRAPHIC OPTICAL-ELEMENTS

Abstract

Based on the diffraction properties of a hololens, the principle of a variable power system is described. The important factors of the system such as cross-talk, aberrations and diffraction efficiency, are discussed. Then an optimum condition for the configuration of a symmetrical off-axis type is derived. It is achieved by combining a Leith-Upatnieks hololens and a Brandt hololens. In order to demonstrate its feasibility, a variable power system is fabricated, and its resolution is evaluated to be better than 30-mu-m.