LIGHT GUIDE DEVICE AND VIRTUAL IMAGE DISPLAY APPARATUS

摘要

A light guide device may be incorporated into a virtual image display apparatus, and functionally includes a light-incident part for entrance of picture lights, a light guide part that guides the picture lights via the light-incident part, and a light-exiting part that outputs the picture lights from the light guide part to a position of an eye. In the light guide device, light guide that enables non-diffraction virtual image formation is performed with respect to lateral first directions and a pupil size is enlarged by first and second diffraction optical elements with respect to longitudinal second directions.

主权项

1. A light guide device comprising:
a light-incident part into which picture lights enter; a light guide part that guides the picture lights via the light-incident part; and a light-exiting part that outputs the picture lights from the light guide part to a position of an eye, wherein light guide that contributes to non-diffraction virtual image formation is performed with respect to first directions along a predetermined surface covering a front of the eye, and a pupil size is enlarged by a diffraction optical element with respect to second directions crossing the first directions along the predetermined surface.