Diffraction gratings having high efficiencies

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United States of America Patent

PATENT NO 5009484
SERIAL NO

07346726

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A diffraction grating structure in the form of a substrate having a grating portion at an input surface thereof and a solid portion at an output surface thereof. A plurality of diffracting elements are formed in the grating portion, the diffracting elements having grooves, the depths thereof depending on the wavelength of incoming radiation impinging on the diffraction elements. The diffracting elements are formed at a selected slant angle with reference to a direction orthogonal to the plane of the input surface of the grating portion of the structure. The incoming radiation is redirected through the grating structure in a selected direction so as to be effectively concentrated at a selected spatial region.

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Patent Owner(s)

Patent OwnerAddress
KING ELISABETH608 BARLEY NECK ROAD WOOLRICH ME 98105
IAN-FRESE RICHARD4556 48TH AVENUE NE SEATTLE WA 98105
WEBER SALLY224 VIRGINIA DRIVE VENTURA CA 93003
THORNTON DON10 NARRAGANSETT AVENUE #9 JAMESTOWN RI 02835
HENDRIK GERRITSEN51 E MANNING STREET PROVIDENCE RI 02096

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Gerritsen, Hendrik J Providence, RI 4 115

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