Patent ID: 6762885
Filing Date: 2004-07-13
Classification: G02B,H04N

Abstract:
A head-mounted image display device having an image producing unit which includes an image display means and a projecting optical system for projecting an image produced by said image display means on an observer's eyes, said head-mounted image display device comprising:a casing body in which said image producing unit is incorporated; a pair of frame supporting members fixed to said casing body; a pair of frame members for wearing said head-mounted image display device on a head supported by said pair of frame supporting members so that said frame members can pivot freely; and frame spreading magnitude changing devices attached to said frame members so that said head-mounted image display device can move relative to said frame members to adjust an angle of pivot by which said frame members pivot; wherein said frame spreading magnitude changing devices move relative to said frame members so that said head-mounted image display device will have distal projections thereof inserted into and withdrawn from gaps between contacting portions of said frame supporting members and said contacting portions of said frame members, whereby a pivot angle by which said frame members can pivot is adjusted at least in two steps.