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US 12,631,801 B2Granted
Reflective and refractive diffuser
AssigneeViavi Solutions Inc.
InventorTasso R. M. Sales
Life of this patent
Estimating the term…
Abstract
A diffuser including a substrate having a first surface and a second surface opposite the first surface; a reflective layer, and a refractive layer, in which the refractive layer has an index of refraction n>1 is disclosed. A system and a method of using the system are also disclosed.
Claims19
A diffuser comprising:
- a substrate having a first surface and a second surface opposite the first surface;
- a reflective layer;
- and
- a refractive layer including a first surface and a second surface opposite the first surface, the second surface of the refractive layer interfacing with the reflective layer and the first surface of the refractive layer including a diffuser pattern, wherein the refractive layer has an index of refraction n>1,
- wherein the refractive layer diffuser pattern is a grating,
- wherein a first portion of the refractive layer extends along all the reflective layer, and
- wherein a second portion of the refractive layer extends along a portion of the substrate.
4 more elements
A diffuser comprising:
- a substrate having a first surface and a second surface opposite the first surface;
- a reflective layer;
- and
- a refractive layer including a first surface and a second surface opposite the first surface, the second surface of the refractive layer interfacing with the reflective layer and the first surface of the refractive layer including a diffuser pattern, wherein the refractive layer has an index of refraction n>1,
- wherein either i) the reflective layer is present in two or more portions along a length of the substrate, and wherein each portion of reflective layer is separated by a void of reflective material, or ii) a first portion of the reflective layer includes a plurality of light scattering features, and a second portion of the reflective layer is devoid of light scattering features.
2 more elements
A method of using a system, comprising:
- receiving illumination, from an illumination source, into a diffuser comprising a substrate having a first surface and a second surface opposite the first surface;
- a reflective layer;
- and
- a refractive layer including a first surface and a second surface opposite the first surface, the second surface of the refractive layer interfacing with the reflective layer and the first surface of the refractive layer including a diffuser pattern, wherein the refractive layer has an index of refraction n>1,
- wherein the refractive layer diffuser pattern is a grating,
- wherein a first portion of the refractive layer extends along all the reflective layer, and
- wherein a second portion of the refractive layer extends along a portion of the substrate.
4 more elements
Dependencies are inferred from the claim text.