Ultraviolet radiation monitoring device
US4851686A · kind A · utility
Inventor
Key dates
| Filing date | Mar 4, 1988 |
| Grant date | Jul 25, 1989 |
| Priority date | — |
| Expiry date | Mar 4, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J1/429
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A dosimeter monitors the ultraviolet radiation exposure of a body and provides an alarm when the cumulative radiation exposure attains a threshold level which is variable depending on the accumulated exposures of the body. A detector generates a sensing signal proportional to the intensity of ultraviolet radiation impinging the body. A first function of the sensing signal is integrated with respect to time to generate an active signal representative of the accumulated dose of radiation received by the body having regard to the intrinsic tolerance of the body. A second function of the sensing signal is integrated with respect to time to generate a reference signal representative of the optimal dose of accumulated radiation which is desired. An alarm is generated when the active signal magnitude attain the reference signal magnitude.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.