| 摘要 |
A grid (30), for use with electromagnetic energy emitting devices, includes at least metal layer, which is formed, for example, by electroplating. The meta l layer includes top and bottom surfaces, and a plurality of solid integrated walls (32). Each of the solid integrated walls extends from the top to botto m surface and having a plurality of side surfaces. The side surfaces of the solid integrated walls (32), are arranged to define a plurality of openings extending entirely through the layer. At least some of the walls also can include projections extending into the respective openings formed by the walls. The projections can be of various shapes and sizes, and are arranged so that a total amount of wall material intersected by a line propagating in a direction along an edge of the grid is substantially the same as another tot al amount of wall material intersected by another line propagating in another direction substantially parallel to the edge of the grid at any distance fro m the edge.
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