FIELD: physics.
SUBSTANCE: optical element for a lamp is made in the form of a sheet with pyramidal depressions with a different number of faces, preferably four, each shape of the depressions having a flat bottom located at a depth from the surface of the sheet or plate on the side of said depressions which is equal to 60-90% of the height of the imaginary untruncated pyramid, the faces of which match the faces of said depression, and the lamp consists of a light source and said optical element.
EFFECT: improved performance.
6 cl, 13 dwg
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