Patent Number: 062529382
Section: claims

1. A grid, adaptable for use with electromagnetic energy emitting devices, comprising: at least one solid metal layer, formed by electroplating, comprising:  each of said plurality sections includes at least one of recesses and projections; and  certain of said projections of each of said sections are received into certain of said recesses of certain other of said sections to couple said sections together.  when said grid comprises eight of said layers each having a height H, said grid transmits electromagnetic energy received thereby at a transmission angle 0 according to the following equation: EQU -1/(2(1+.SIGMA.2.sup.n)H).ltoreq..theta..ltoreq.1/(2(1+.SIGMA.2.sup.n)H)  each of said layers includes a metal border having alignment openings therein; and  said alignment openings of each of said layers align when said layers are stacked on top of each other. 2. A grid as claimed in claim 1, further comprising a plurality of said layers which are stacked on top of each other such that walls of the layers are substantially aligned so that the openings in the layers are substantially aligned to form openings which pass entirely through the grid. 3. A grid as claimed in claim 1, wherein said at least one layer comprises a plurality of sections, each including a portion of the top and bottom surfaces and some of said walls, at least two of said sections being coupled together to form at least a portion of a said at least one layer. 4. A grid as claimed in claim 3, wherein the separate sections of the grid are coupled together on a support surface. 5. A grid as claimed in claim 3, wherein the separate sections are glued together. 6. A grid as claimed in claim 3, wherein: 7. A grid as claimed in claim 2, wherein: 8. A grid as claimed in claim 2, wherein: