Patent ID: 9568996
Date: 2017-02-14
CPC Classifications: G02B,G06F,G06T,G09G

Claim:
1. An image display device that is used by being mounted on the head of an observer, the image display device comprising: an image forming unit that forms a virtual image as an image that is visually recognizable to the observer and that has a display area, the display area having a reference position on which the virtual image is displayed; a detection unit that detects angular velocities around three different axes of the head of the observer in different directions intersecting each other so as to detect movement of the head of the observer; and a control unit that controls the image forming unit on the basis of the movement detected by the detection unit, wherein the reference position is located at or directly adjacent to a center of the display area, a sum of the angular velocities around the three different axes corresponds to a predetermined value, wherein when the movement detected by the detection unit is larger than the predetermined value, the control unit changes a display position of the virtual image in a direction toward a peripheral of the display area from the reference position, and when the predetermined value is set as ω