Circular UV polarizer
US5989461A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 3, 1997 |
| Grant date | Nov 23, 1999 |
| Priority date | — |
| Expiry date | Jul 3, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B5/3016
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The invention relates to a circular UV polarizer based on a polymerized mesogen being obtainable by curing by actinic radiation or by heat of a polymerizable composition which comprises the following components: PA1 a) a liquid mesogenic component A composed of one or more achiral mesogenic compounds having at least one polymerizable end group optionally linked via a spacer group to the mesogenic core, PA1 b) a component B composed of one or more chiral compounds in such an amount that the maximum wavelength of reflection (.lambda..sub.max) of the composition is between 320 and 440 nm, inclusive, and PA1 c) a photoinitiator or thermal initiator component C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.