Optical device and method for manufacturing the same
US8928024B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 8, 2013 |
| Grant date | Jan 6, 2015 |
| Priority date | — |
| Expiry date | Oct 8, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H20/882
Abstract
The present invention provides an optical device, and the optical device comprises a luminous element and a gradient-index nanoparticle layer and scattering particles composed by particles stack with different refractive indexes and particle sizes. The luminous element has a light emitting surface. The refractive indexes of the nanoparticle layers decrease bottom up. The nanoparticles based gradient-index nanoparticle layer comprises a plurality of dielectric layers with different refractive index, and the dielectric scattering particle layers are stacked upward from the light emitting surface to let the gradient-index nanoparticle layer and scattering particles cover the light emitting surface. The method for manufacturing the abovementioned optical device is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.