Consolidated multilayered gradient refractive index optical materials
AssigneePolymerplus LLC
InventorMichael T. Ponting
Life of this patent
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Abstract
A consolidated multilayered GRIN optical material includes a multilayered composite GRIN sheet that includes a plurality of consolidated coextruded multilayered polymer films. Each of the multilayered polymer films includes a plurality of at least two alternating layers (A) and (B). Layer (A) includes a first blend of polymer components and layer (B) includes a second blend of polymer components. The multilayered composite GRIN sheet has an external optical transmission of at least 80% at a wavelength of 633 nm measured using UV-VIS spectroscopy and is free of intralayer polymer domains at least 1 micron size scale in any dimension.
Claims25
A consolidated multilayered GRIN optical material comprising a multilayered composite GRIN sheet that includes a plurality of consolidated coextruded multilayered polymer films;
- wherein each of the multilayered polymer films includes a plurality of at least two alternating layers (A) and (B) represented by formula (AB)x, where x=2n, and n is in the range of from 4 to 18;
- wherein layer (A) includes a first blend of polymer components and layer (B) includes a second blend of polymer components, wherein the multilayered composite GRIN sheet has an external optical transmission of at least 80% at a wavelength of 633 nm measured using UV-VIS spectroscopy and is free of intralayer polymer domains at least 1 micron size scale in any dimension.
A method of fabricating a gradient refractive index (GRIN) lens comprising:
- extruding a first polymer blend and a second polymer blend to form a plurality multilayered polymer composite film, each of the multilayered polymer films includes a plurality of at least two alternating layers (A) and (B) represented by formula (AB)x, where x=2n, and n is in the range of from 4 to 18;
- wherein layer (A) includes a first blend of polymer components and layer (B) includes a second blend of polymer components;
- consolidating the plurality of the multilayered polymer films into a multilayer composite GRIN sheet, the multilayered composite GRIN sheet has an external optical transmission of at least 80% at a wavelength of 633 nm measured using UV-VIS spectroscopy and is free of intralayer polymer domains at least 1 micron size scale in any dimension;
- and
- shaping the multilayered composite GRIN sheet into a GRIN lens.
Dependencies are inferred from the claim text.