Durable, inorganic, absorptive, ultra-violet, grid polarizer
US8947772B2 · kind B2 · utility
2Cited by
110References
19Claims
0Family size
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Key dates
| Filing date | Mar 5, 2014 |
| Grant date | Feb 3, 2015 |
| Priority date | — |
| Expiry date | Mar 5, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B5/3091
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An inorganic, dielectric grid polarizer device includes a stack of film layers disposed over a substrate. Each film layer is formed of a material that is both inorganic and dielectric. Adjacent film layers each have different refractive indices. At least one of the film layers is discontinuous to form a form-birefringent layer with an array of parallel ribs having a period less than 400 nm. Another layer, different than the form-birefringent layer, is formed of an optically absorptive material for the ultra-violet spectrum.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.