Method and apparatus for switching optical filters
US7719748B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 20, 2008 |
| Grant date | May 18, 2010 |
| Priority date | — |
| Expiry date | May 20, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/1524
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The disclosure relates to a method and apparatus for providing switching optical filter. The switching optical filter provides several functionalities at the same time. For example, the filter can be used to remove photons of undesirable wavelength, such as ultraviolet or infrared, while simultaneously switching from and between one mode to another in order to accommodate changing ambient light conditions. In one embodiment, the disclosure relates to a method for forming an optical filter, the method comprising: forming a first electrode layer on a substrate; forming an ion conductor layer to at least partially cover the first electrode layer; forming an optically transparent layer over the ion conductor layer, the optically transparent layer preventing transmission of photons having a first wavelength while transmitting photons of a second wavelength; and forming a second electrode layer to at least partially cover the optically transparent layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.