Diffractive optical element, method for designing an efficiency-achromatized diffractive structure, and method for producing an efficiency-achromatized diffractive element

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United States of America

PATENT NO 12253695
SERIAL NO

17603714

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Abstract

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The invention relates to a diffractive optical element with a spatial variation in the refractive index, wherein a sequence of adjacent sections, which form a diffractive structure, is formed by the spatial variation in the refractive index, within which sections the refractive index varies in each case. Over a spectral range extending over at least 300 nm, the diffractive structure has a diffraction efficiency of at least 0.95, averaged over the entire spectral range. The value of the diffraction efficiency of at least 0.95, averaged over the entire spectral range, is realized by a single single-layer diffractive structure with an optimized combination of at least two refractive indices and at least two Abbe numbers within each section of the sequence of adjacent sections. The refractive index variation can be achieved by means of doping, material mixing, or structuring into sub-wavelength ranges.

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Patent Owner(s)

Patent OwnerAddress
CARL ZEISS AGCARL-ZEISS-STRASSE 22 OBERKOCHEN 73447

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Decker, Manuel Jena, DE 7 0
Werdehausen, Daniel Jena, DE 3 0

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