Metal-coated multilayer mirror
US5699188A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 26, 1995 |
| Grant date | Dec 16, 1997 |
| Priority date | — |
| Expiry date | Jun 26, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB32B2551/08
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A metal-coated multilayer mirror having high reflectivity and high specularity. The mirror comprises a multilayered polymer film and a reflective metal layer. The multilayered polymer film preferably comprises layers of a crystalline, semi-crystalline, or liquid crystalline material, such as a naphthalene dicarboxylic acid polyester, having an average thickness of not more than 0.5 microns and layers of a second polymer having an average thickness of not more than 0.5 microns. Preferably, the layers of semi-crystalline naphthalene dicarboxylic acid polyester have a positive stress optical coefficient. The reflective metal layer comprises a metal selected from the group consisting of silver, gold, aluminum, nickel, copper, and titanium, with silver and aluminum being particularly preferred. The metal-coated multilayer mirrors are useful in applications requiring broad bandwidth reflection, high specularity, low manufacturing costs, and high reflectivity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.