WIDE FIELD OF VIEW, COMPACT COLLIMATING APPARATUS

摘要

A compact, lightweight, multi-wavelength display system which can be used as a collimating eyepiece. A first polarization selective optical element reflects light have one linear polarization state while transmitting light having the orthogonal linear polarization state. A first quarter-wave plate transforms the linearly polarized light to a circular polarization. A combining optical element with a partially reflective surface reflects a portion of the transformed light and transmits a portion of die transformed light. A second quarter-wave plate transforms the circularly polarized light back to a linear polarization. A second polarization selective optical element reflects light have one linear polarization state while transmitting light having the orthogonal linear polarization state.