Request InfoElk Industries, R-K ManufacturingElk Industries LLC has released a patented optical element for lasers, a four-sided pyramid that can be used as a 0° reflector to reflect laser or other optical beams or rays back toward the source when the beam is directed through the base toward the apex of the pyramid. A beam also can be directed through one of the triangular faces of the pyramid toward the base and reflected outward through the opposite face of the pyramid. When used as a prism, the pyramid breaks up a spectrum of light into its component colors. 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