G - Physics
02
B
G02B 27/18 (2006.01) G03B 21/56 (2006.01) G03B 37/04 (2006.01) G09B 9/00 (2006.01) G09B 9/32 (2006.01)
Patent
CA 2305484
A projection system comprising a frame and a dome formed from back projection screen material connected to the frame. The frame defines an enclosure located on a convex side of the dome, and a reduced pressure is applied to the enclosure such that the material from which the dome is formed is tensioned. An image is projected onto the convex side of the dome by an array of projectors mounted on the frame outside the enclosure. Each projector projects light onto a respective projection field on the dome such that adjacent projection fields overlap. The projected intensities in areas of the dome on which the projection fields overlap are controlled such that the intensity of the resultant image in those areas is not substantially different from the intensity of the resultant image in areas of the dome on which projection fields do not overlap.
Marks & Clerk
Thomson Training & Simulation Limited
LandOfFree
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