Wide field-of-view virtual image projector

摘要

This document describes techniques and apparatuses for implementing a wide field-of-view virtual image projector. A wide field-of-view virtual image projector may include a spatial light modulator configured to inject light rays into an input wedge. The input wedge acts to output the light rays with an increased fan-out angle into an output light guide positioned proximate the input wedge. The spatial light modulator is controlled to inject light rays into the input wedge effective to diffract the light rays out of the output light guide to generate a virtual image.

主权项

1. A virtual image projector comprising:
a spatial light modulator configured to output modulated light rays, the spatial light modulator comprising a liquid crystal display; an input wedge positioned proximate the spatial light modulator, the input wedge configured to receive the modulated light rays from the spatial light modulator and to output the light rays at an increased fan-out angle; and an output light guide configured to receive the light rays, at the increased fan-out angle, from the input wedge, and to diffract the light rays out of the output light guide to generate a virtual image; the spatial light modulator configured to:
scan an illumination of the liquid crystal display to generate multiple virtual images; andtime-multiplex the multiple virtual images to generate the virtual image, the virtual image composed of the multiple virtual images.