A dosimeter 10, which may be easily implemented as a monolithic device, using all-silicon semiconductor fabrication techniques. The dosimeter 10 has a UV filter 11a, whose transmission characteristics match those of the erythema action curve. The filtered radiation is detected by a photodiode, and appropriate signal processing is performed to provide some sort of output indicating UV dosage. Other embodiments use a UV sensitive photodiode without a filter.
Martin P. Wuest