Head-mounted projection display system featuring beam splitter

Details Head-mounted projection display system featuring beam splitter Head-mounted projection display system featuring beam splitter

H - Electricity

04

N

H04N 5/74 (2006.01) G02B 27/01 (2006.01) G09B 9/30 (2006.01) G09B 9/32 (2006.01) G02B 27/00 (2006.01)

Patent

CA 2085735

2085735 9218971 PCTABS00017 A head-mounted projection display system (20) featuring a beam splitter (30) displays a simulated environment to an observer (26) using a light-weight, low cost, head-mounted projector and a retro-reflective screen (32). The display system optically colocates the projector with the observer's eyes (27) for effective use of either curved or flat retro-reflective screens. High screen gain achieved by the head-mounted projection display system (20) makes inexpensive projector sources such as a cathode ray tube (37) feasible. An alternative head-mounted display system also incorporating beam splitters producing unlimited horizontal field of view but with limited binocular overlap while using multiple head-mounted image sources for each eye is described. A method of providing the head-mounted display system also is disclosed.

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