Patent ID: 9244277
Filing Date: 2016-01-26
CPC Classification: G02B

Claim Text:
1. A tiled head-mounted display device, comprising: an optical component including a plurality of prisms with free-form surfaces, each prism being a wedge prism comprising a first optical surface, a second optical surface and a third optical surface; and a display component including a plurality of micro-displays, wherein the number of the micro-displays and the number of the prisms with free-form surfaces is identical, wherein each prism with free-form surfaces and the corresponding micro-display constitutes a display channel, a coordinate system is defined as: global coordinate origin O is exit pupil center; Z-axis is in a direction along the viewing axis of user's eye; Y-axis is perpendicular to Z-axis and extends right above the eye; X-axis is perpendicular to both Y-axis and Z-axis, constituting a Cartesian coordinate; wherein the display channels are tiled so that an overall field of view of the tiled device can be substantially a summation of individual field of view of each display channel and the center of exit pupil of each display channel in the tiled device is located at a pupil center of the user's eye, wherein the display channels are tiled by optical tiling methods, the first optical surface ( where P wherein optical tiling methods comprise a first optical tiling method and a second optical tiling method, wherein in the first optical tiling method, the bottom surfaces ( wherein in the second optical tiling method, the side surfaces (