Patent ID: 7296901
Filing Date: 2007-11-20
Classification: G03B,H04N

Abstract:
1. A projection display comprising a single or plural display devices, a single or plural projection optical systems each of which has an aperture and is adapted to magnify and project an image appearing on each display device, and a display panel including image-formation means located near images projected through the projection optical systems for formation at a viewing pupil position of an aperture image of each projection optical system and diffuser means that has scatter action and is adapted to magnify the aperture image of each projection optical system into a viewing pupil, wherein: a misalignment warning pupil is adjacent to or overlaps partly with said viewing pupil via said display panel, and a misalignment warning projector for issuing a misalignment warning is located on said display panel and adjacent to at least one of said projection optical systems.