Optical functional film and method for producing the same
US10859733B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 13, 2016 |
| Grant date | Dec 8, 2020 |
| Priority date | — |
| Expiry date | Feb 5, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H20/84
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An optical functional film containing a siliceous material, wherein a refractive index nA of one surface A of said optical functional film to light is larger than a refractive index nb of the other side surface B to light, and the refractive index to light gradually decreases from said surface A to said surface B and wherein when a refractive index of a medium X coming into contact with said surface A is nx and a refractive index of a medium Y coming into contact with said surface B is ny, the relation ny<nb<na<nx is satisfied and wherein the film is manufactured by the steps of a first layer forming step and a second layer forming step; and a heating step of heating to cure said first layer and said second layer, wherein the contacting parts of said first layer and said second layer are compatibilized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.