Patent ID: 8149508

Claim:
A projection structure for an immersive dome having an interior defined therein, comprising: at least one portion of an open-cell foam layer comprising an inner surface for displaying at least one visual image projected thereon, and an outer surface opposite said inner surface; and a plurality of cells that extend through said open-cell foam layer, wherein said plurality of said cells are open to other of said cells to form interconnected paths therebetween, wherein a first portion of said cells extends into said open-cell foam layer from said inner surface, wherein a second portion of said cells extends into said open-cell foam layer from said outer surface, and wherein a portion of said interconnected paths extends between said inner surface and said outer surface between interconnected cells; wherein said open-cell foam layer is at least partially acoustically transparent for permitting desired sound transmission through said interconnected paths that extend between said inner surface and said outer surface between said interconnected cells, while reducing unwanted sound reflection.