US 12,204,109 B2
Wide angle and high resolution tiled head-mounted display device
Dewen Cheng, Beijing (CN); Yongtian Wang, Beijing (CN); and Hong Hua, Tucson, AZ (US)
Assigned to The Arizona Board of Regents on Behalf of the University of Arizona, Tucson, AZ (US)
Filed by Arizona Board of Regents on behalf of the University of Arizona, Tucson, AZ (US); and BEIJING INSTITUTE OF TECHNOLOGY, Beijing (CN)
Filed on Mar. 20, 2023, as Appl. No. 18/123,503.
Application 18/123,503 is a continuation of application No. 17/065,788, filed on Oct. 8, 2020, granted, now 11,609,430.
Application 17/065,788 is a continuation of application No. 16/366,204, filed on Mar. 27, 2019, granted, now 10,809,533, issued on Oct. 20, 2020.
Application 16/366,204 is a continuation of application No. 14/953,563, filed on Nov. 30, 2015, granted, now 10,281,723, issued on May 7, 2019.
Application 14/953,563 is a continuation of application No. 13/695,069, granted, now 9,244,277, issued on Jan. 26, 2016, previously published as PCT/CN2010/072376, filed on Apr. 30, 2010.
Prior Publication US 2023/0333387 A1, Oct. 19, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. G09G 5/00 (2006.01); G02B 5/04 (2006.01); G02B 27/01 (2006.01)
CPC G02B 27/0172 (2013.01) [G02B 5/04 (2013.01); G02B 2027/011 (2013.01); G02B 2027/0123 (2013.01); G02B 2027/0147 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A tiled head-mounted display device, comprising:
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 plurality of micro-displays, each micro-display associated with a respective one of the plurality of prisms with free-form surfaces, a selected two of the plurality of micro-displays oriented facing each other with the plurality of prisms disposed therebetween;
wherein each prism with free-form surfaces and the associated micro-display constitutes a display channel, and a global coordinate system is defined as: a global coordinate origin O is at an exit pupil center; Z-axis is in a direction along the viewing axis of a 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 system; and
an auxiliary lens with free-form surfaces disposed in optical communication with the plurality of prisms with free-form surfaces to allow user to see through the tiled head-mounted display device to observe an outside real-world scene, whereby an augmented environment is provided,
wherein the display channels are tiled so that an overall field of view of the tiled device is a summation of individual fields of view of each display channel and the center of an exit pupil of each display channel in the tiled device is located at the exit pupil center at the global coordinate origin O.