Apparatus for removing X-rays and other harmful radiation from visible radiation
US4360836A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 3, 1980 |
| Grant date | Nov 23, 1982 |
| Priority date | — |
| Expiry date | Mar 3, 2000 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG21K1/10
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention provides an apparatus which removes harmful radiation from the visible image producing radiation emitted by a cathode ray tube. The apparatus comprises an image conveying member for conveying by reflectance the visible image originating from a cathode ray tube and an image receiving member for receiving the image conveyed by the image conveying member. The image conveying member is comprised of a reflective layer and an absorptive layer. The reflective layer of the image conveying member is substantially reflective of visible electromagnetic radiation and substantially transmissive of electromagnetic radiation of wavelengths shorter than visible radiation. The absorptive layer of the image conveying member is comprised of a material capable of absorbing the electromagnetic radiation transmitted by the reflective layer of the image conveying member. The image receiving member is comprised of a material which is substantially transmissive of electromagnetic radiation of wavelengths shorter than visible radiation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.