VIRTUAL IMAGE DISPLAY DEVICE AND HEAD-MOUNTED DISPLAY

摘要

A virtual image display device includes: an image generator generating a picture light beam modulated based on a video signal; and an optical element including a plane of incidence to which the picture light beam emitted from the image generator is input, and an exit surface emitting the picture light beam after a cross-sectional area of the picture light beam input to the plane of incidence has been enlarged. The optical element includes a first light guide and a second light guide connecting the plane of incidence and the exit surface and guiding the picture light beam. A first light branching layer is disposed between the first and second light guides, and partially reflects and partially transmits the picture light beam. The picture light beam emitted from the image generator obliquely enters the first light branching layer.

主权项

1. A virtual image display device comprising:
an image generator configured to generate and emit a picture light beam modulated based on a video signal; and an optical element including:
a plane of incidence to which the picture light beam emitted from the image generation section is input, andan exit surface configured to emit the picture light beam after a cross-sectional area of the picture light beam input to the plane of incidence has been enlarged, wherein the optical element includes:
a first light guide and a second light guide configured to optically connect the plane of incidence and the exit surface to each other and to guide the picture light beam, anda first light branching layer disposed between the first light guide and the second light guide, the first light branching layer being configured to partially reflect and partially transmit the picture light beam, and the picture light beam emitted from the image generation section is configured to obliquely enter the first light branching layer.