MOVING BODY VIDEO PROJECTION SYSTEM, VIDEO PROJECTION DEVICE, VIDEO DISPLAY LIGHT DIFFRACTION OPTICAL ELEMENT, HELMET, AND VIDEO PROJECTION METHOD

摘要

The purpose of the present invention is to provide a moving body video projection system having a head-mounted part reduced in size and/or weight. The present technology provides a moving body video projection system (100) constituted by: a video projection device (101) attached to a moving body; and a video display light diffraction optical element (103) that is disposed in front of a person's eyes which move with the moving body, and that diffracts video display light projected from the video projection device (101) to cause such light to reach the person's eyes. The present technology further provides components of the video projection system and a video projection method for said video projection system.