Patterned polarization-sensitive optical elements and devices using the same
US8120861B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Sep 21, 2009 |
| Grant date | Feb 21, 2012 |
| Priority date | — |
| Expiry date | Oct 7, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B23/10
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
In general, in one aspect, the invention features an apparatus that includes a plurality of optical elements arranged to form an image of an object. The elements include a first element comprising one or more regions of a polarizing material, the regions being shaped as one or more visual features, a polarizer, and a mounting assembly including a first mount for the first element and a second mount for the polarizer. At least the first or second mount is rotatable with respect to an optical axis between a first orientation and a second orientation. In the first orientation, the visual features are visible in the image of the object and, in the second orientation, the visual features are not visible in the image of the object.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.