System for protection from laser radiation
US3982206A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 27, 1974 |
| Grant date | Sep 21, 1976 |
| Priority date | — |
| Expiry date | Nov 27, 1994 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S3/005
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A protective window for use with high-energy infrared radiation sources, such as lasers, is described, together with a method for manufacturing the window. For visual applications, the window basically includes a sheet of light transmitting material such as glass or quartz, which has a partially-reflecting surface coating, such as gold, which primarily reflects infrared radiation while transmitting visible light. The reflectivity of the coating may be improved by an infrared laser scanning technique. Finally, one or both surfaces of the window are coated with a visible-light transmitting synthetic resin which, if rapidly heated to a suitable temperature, vaporizes without leaving any residue. This vaporization carries away any contamination, such as dirt or dust, on the resin coating, leaving a very clean reflection surface. In order to further protect the window, channels may be formed within the window through which a cooling fluid may be circulated to carry away any heat absorbed by the window when subjected to infrared irradiation. This window has a variety of uses, such as the protection of laboratory or factory workers using high-energy infrared radiation sources, defenses ag…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.