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US 2014/0192420 A1Published application
Aspherical grin lens
AssigneeCase Western Reserve University
InventorsEric Baer, Anne P. Hiltner, Michael T. Ponting
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Abstract
A method of fabricating an aspherical gradient refractive index lens includes co-extruding a first polymer material having a first refractive index and a second polymer material having a second refractive index different than the first refractive index to form multilayered polymer composite films, assembling the multilayered polymer composite films into a multilayer composite GRIN sheet and shaping the multilayered composite GRIN sheet into an aspherical lens.
Claims21
A method of fabricating an aspherical gradient refractive index (GRIN) lens comprising:
- co-extruding a first polymer material having a first refractive index and a second polymer material having a second refractive index different than the first refractive index to form multilayered polymer composite films;
- assembling the multilayered polymer composite films into a multilayer composite GRIN sheet;
- and
- shaping the multilayered composite GRIN sheet into an aspherical lens.
1 more element
A gradient index lens comprising:
- a co-extruded, multilayered composite GRIN sheet having an aspherical shape;
- wherein the multilayered composite sheet includes a plurality stacked co-extruded multilayered polymer composite films;
- wherein each of the multilayered polymer composite 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) is comprised of component (a) and layer (B) is comprised of component (b);
- and
- wherein the components (a) and (b) have different refractive indexes.
3 more elements
Dependencies are inferred from the claim text.