Optical element designed to operate in transmission in the infrared spectrum, provided with a high-density-polyethylene coating
US6441956B1 · kind B1 · utility
4Cited by
3References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 7, 2000 |
| Grant date | Aug 27, 2002 |
| Priority date | — |
| Expiry date | Aug 15, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B13/14
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
High-density polyethylene (HDPE) is used as a coating for optical elements operating in transmission in the infrared spectrum, which are made up of a material other than polyethylene, such as hygroscopic salt, semiconductor materials, fluorides, chalcogenides, silver halides, and others, so as to exploit the optical properties of HDPE, at the same time keeping the thickness reduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.