| 摘要 |
PURPOSE: A method and apparatus is provided for supporting video screens and more particularly for an audiovisual screen or a plurality of such screens placed in abutment to form a video display wall. CONSTITUTION: An apparatus comprises a screen retention system ideally suited for a large screen display system consisting of a plurality of rear projection screens arranged in a pattern of rows and columns. Eight screens are configured two high by four wide with each screen being 84 inches across its diagonal. The screens themselves typically is cleanable, graphite gray density acrylic for a high contrast ratio. The screens is fresnel-lenticular construction, diffusion or other types for high resolution, color corrected images. The screens are held in place against a structural framework by means of tension applied through springs and cords. The individual screens(10) are shown supported against a structural framework(15). The framework is metal, wood, plastic or any other material having the strength to provide sufficient rigidity and to support the weight of however many screens are to make up the video display wall. The framework is made of extruded aluminum frame members(20). The extrusions is manufactured inexpensively as a continuous extrusion, preferably from aluminum, and cut to the required lengths for constructing the frame matrix.
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