Patent ID: 8228607
Filing Date: 2012-07-24
Classification: G02B

Abstract:
1. A head-mounted type image display device comprising: a plurality of eyepiece optical units for each emitting image light toward a corresponding eyeball so as to display a virtual image of an image to be displayed; and a head-mounting unit configured to support the plurality of eyepiece optical units, such that an emitting optical axis of each eyepiece optical unit substantially passes through the eyeball rolling center of the corresponding eyeball, wherein: the plurality of eyepiece optical units include either eyepiece optical units for left eye corresponding to left eye or eyepiece optical units for right eye corresponding to right eye in a state where the head-mounting unit is attached to the head of an observer, the eyepiece optical units for left eye or the eyepiece optical units for right eye include an upper eyepiece optical unit and a lower eyepiece optical unit, which are supported to be apart from each other in a vertical direction, the upper eyepiece optical unit and the lower eyepiece optical unit are arranged such that in a state where the emitting optical axis of one of the upper eyepiece optical unit and the lower eyepiece optical unit passes through a pupil of the corresponding eyeball thereof as a result of the rolling of the eyes, the emitting optical axis of the other eyepiece optical unit passes outside of the pupil of the corresponding eyeball thereof, and such that an angle formed between the emitting optical axes of the upper eyepiece optical unit and the lower eyepiece optical unit of the plurality of the eyepiece optical units is approximately 23 degrees or larger, and a virtual image position displayed by the upper eyepiece optical unit and a virtual image position displayed by the lower eyepiece optical unit are different from each other.