Refusable personal monitoring device
US6642650B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 26, 1999 |
| Grant date | Nov 4, 2003 |
| Priority date | — |
| Expiry date | Oct 26, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10F30/301
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A device in form of a practical and reusable card for personal monitoring of incident penetrating radiation energy and for reading said energy comprising a stimulable phosphor absorbing and storing said energy and being stimulable with a wavelength &lgr;a; an electroluminescent phosphor emitting, upon application of an electrical field, stimulation light with wavelength &lgr;a, said wavelength &lgr;a being different from the said incident penetrating radiation, and wherein said device is equipped with means in order to apply an electrical field on said electroluminescent phosphor and wherein said stimulable phosphor and said electroluminescent phosphor are positioned relative to each other so that said light emitted by said electroluminescent phosphor reaches said stimulable phosphor for stimulating said phosphor in order to release stimulated light.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.