Patent ID: 8570243

Claim:
A head mounted display comprising: (a) a frame shaped like glasses to be worn on the head of an observer; and (b) an image display apparatus attached to the frame, the image display apparatus including (A) an image forming device; (B) an optical system that converts light emitted from the image forming device into parallel light; (C) an optical device to which the light beams converted into the parallel light by the optical system enter, in which the light beams are guided, and emitted therefrom; and (D) a supporting member that pivotally supports at least the image forming device with respect to the optical device, wherein an assembly of at least the image forming device and the supporting member has the center of gravity at a position apart from the pivoting central axis of the supporting member, and at least the image forming device is pivoted with respect to the optical device by gravity, whereby the image forming device is horizontally held.