Rear projection facetted dome

Details Rear projection facetted dome Rear projection facetted dome

G - Physics

03

B

G03B 21/62 (2006.01) G03B 21/56 (2006.01) G09B 9/30 (2006.01) G09B 9/32 (2006.01)

Patent

CA 2063878

A multi-facetted dome imaging system (10) utilizes rear projection imaging techniques to present a moving or still image to each screen facet (12). The trapezoidal facets (12) are arranged with a series of lower facets (16), upper facets (18), and a top facet (20) generally forming a dome (11). Each facet (12) has a projector (30) disposed at its rear to project the image. Visibility of facet joints is minimized by joining the facets (12) by a pair of transparent stiffeners (42, 44) which hold the mating portions of the screen facets (12). The stiffeners (42, 44) are suspended by springs (48), which are held by a support structure (50).

Système de projection d'images à facettes multiples formant un dôme (10) et utilisant des techniques de projection arrière sur écran translucide, pour présenter des images en mouvement ou fixes sur chaque facette de l'écran (12). Les facettes trapézoïdales (12) sont reliées à une série de facettes inférieures (16), à des facettes supérieures (18), et à une facette supérieure (20) formant essentiellement un dôme (11). Chaque facette (12) est munie, à l'arrière, d'un projecteur (30) servant à présenter des images. La visibilité des joints entre les facettes est réduite en assemblant celles-ci (12) au moyen d'une paire de renforts transparents (42, 44), qui retiennent les éléments de raccord des facettes de l'écran (12). Les renforts (42, 44) sont suspendus au moyen de ressorts (48) retenus par une structure de support (50).

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