Low reflectance optical web
AssigneeRacing Optics, Inc.
InventorsBart E. Wilson, Stephen S. Wilson
Life of this patent
Estimating the term…
Abstract
An optical web comprising includes a substrate with an anterior coating applied to the anterior side of the substrate and a posterior coating applied to the posterior side of the substrate. The refractive index of the anterior coating and the posterior coating is less than that of the substrate. A second coating layer may be applied to the anterior coating layer and/or the posterior coating layer, where the second coating layer has a refractive index less than that of the coating layer it is applied to. Additional coating layers may be applied to produce a stack of layers that decrease monotonically in refractive indexes moving outward from the substrate. The optical webs may be laminated together to form tear-off laminated lens stacks.
Claims22
An optical web comprising:
- a substrate having a substrate refractive index, the substrate having an anterior side and an opposing posterior side;
- an anterior coating including a first anterior layer applied to the anterior side of the substrate, the first anterior layer having a first anterior layer refractive index,
- a posterior coating including a first posterior layer applied to the posterior side of the substrate, the first posterior layer having a first posterior layer refractive index,
- wherein the substrate refractive index is greater than the first anterior refractive index and the first posterior refractive index,
- wherein the first anterior layer refractive index is between about 1.40 and about 1.50.
An optical web comprising:
- a substrate having a substrate refractive index;
- a first coating layer applied to the substrate, the first coating layer having a first coating refractive index,
- a second coating layer applied to the first coating layer so that the first coating layer is positioned between the substrate and the second coating layer, the second coating layer having a second coating refractive index,
- wherein the first coating refractive index is greater than the second coating refractive index, and
- wherein the substrate refractive index is greater than the first coating refractive index,
- wherein the substrate refractive index is at least about 1.53, wherein the first coating refractive index is between about 1.44 and about 1.48, and wherein the second coating refractive index is no greater than about 1.43.
A method of manufacturing a laminated optical structure comprising:
- forming a first optical structure and a second optical structure by applying an anterior coating to an anterior side of a substrate and applying a posterior coating to a posterior side of a substrate;
- and
- laminating the first and second optical structures together via an adhesive layer, the adhesive layer being configured to allow one optical structure to be peelably removed from the other,
- wherein the substrate has a substrate refractive index,
- wherein the anterior coating includes a first anterior layer applied to the anterior side of the substrate, the first anterior layer having a first anterior layer refractive index,
- wherein the posterior coating includes a first posterior layer applied to the posterior side of the substrate, the first posterior layer having a first posterior layer refractive index,
- wherein the substrate refractive index, the first anterior layer refractive index, and the first posterior layer refractive index are greater than 1.00,
- wherein the substrate refractive index is greater than the first anterior refractive index and the first posterior refractive index, and
- wherein the adhesive layer has an adhesive refractive index matched to within about 0.2 of the substrate refractive index.
Dependencies are inferred from the claim text.