Optical reflector for lasers

Claim 1

A laser beam reflector comprising: a base, a plurality of adjacent hollow cells, each cell having a hollow core defined by an enclosure mounted on said base, said enclosure being formed by a plurality of walls supporting a laser beam radiant energy reflecting surface spaced from said base, each of said surfaces having an edge closely spaced from an edge of an adjacent surface, said surfaces being formed into an array to provide a substantially continuous reflecting surface for radiant energy incident thereon; and cooling means disposed in said base for providing a fluid coolant to the core of each of said hollow cells for cooling said surface, said cooling means including coolant manifold means disposed in said base and further including coolant feed means disposed inside each core of said cell in communication with said manifold means for dispersing said fluid coolant against said walls and surface, said edges being spaced from each other a distance arranged to dissipate negligible radiant energy from said beam between said walls.