Synthetic UV-bleached polarizer and method for the manufacture thereof
US5925289A · kind A · utility
22Cited by
7References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 20, 1997 |
| Grant date | Jul 20, 1999 |
| Priority date | — |
| Expiry date | Jun 20, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B5/3033
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A visible range synthetic light polarizing element is provided, the optical and polarizing properties thereof having been selectively effected by regulated exposure of said polarizing element to ultraviolet irradiation. The ultraviolet irradiation can be either polarized or non-polarized, but in either case, is at intensities greater than that produced incidentally or by ambient ultraviolet irradiation sources. The resultant light-polarizing element is characterized by its heightened luminous transmittance, an improvement accomplished without departure from good polarization efficiency (i.e., greater than 99.9%).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.