发明名称 Portable panoramic theatre
摘要 A free-standing collapsible panoramic theatre is described. When assembled, the theatre includes a multiplicity of vertical screens arranged in a polygonal arrangement that defines an internal viewing region. The viewing screens are supported by a multiplicity of towers which are located external to the polygonal arrangement with one tower located at each vertical corner of the polygonal arrangement. Each tower has a base, a support structure extending vertically from the base, a manually-operable alignment mechanism which permits the vertical orientation of the support structure to be adjusted, a pair of upper and lower screen support brackets mounted for telescopic movement on the support structure and releasably retaining the pair of adjacent viewing screens at the vertical corner associated with the tower, and a projector support housing for supporting a projector. Projection passages are defined at each corner of the polygonal arrangement to permit projection of light from the tower associated with the corner through the internal viewing region onto an oppositely disposed viewing screen. The theatre is manufactured essentially as a kit of components which can be assembled and disassembled repeatedly for use at different locations.
申请公布号 US4641918(A) 申请公布日期 1987.02.10
申请号 US19850814980 申请日期 1985.12.31
申请人 EML ENVIRONMENTAL SIMULATIONS INC. 发明人 MOFFATT, MICHAEL;LEPAGE, JAMES;ENGLAR, GERALD
分类号 G03B21/00;(IPC1-7):G03B21/56 主分类号 G03B21/00
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