Double blazed binary diffraction optical element beam splitter
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United States of America Patent
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Jul 16, 1996
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Dec 23, 1993
filing date -
Dec 23, 1993
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Abstract
A double blazed binary diffractive optical element beam splitter having alternating and opposing individual blazed diffraction gratings upon a multilevel surface relief phase grating structure for splitting an incident monochromatic light beam into a first and second diffracted light beams. The double blazed binary diffractive optical element and two single blazed binary diffractive optical elements can form either a beam splitting apparatus or a beam combining apparatus. Double blazed binary diffractive optical elements and sets of two single blazed binary diffractive optical elements can form beam splitting and combining apparatuses to produce a single beam or two closely spaced beams.
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