Solar UV radiation intensity meter - contains photoelement sensors and analogue or digital indicator, and is miniaturised and simple

The arrangement is miniaturised and used for skin protection purposes. It is a simple device which enables the intensity to be measured in any position. The intensity measurement is performed by photoelements such as photodiodes, phototransistors, or photoresistors. The measurement value is displayed on an electronic indication instrument such as a rotating coil or moving iron instrument, or on a digital display contg. LEDs or liquid crystal. The UV intensity can be converted electronically to determine the necessary protection factor taking account of type of skin, radiation intensity, and time of exposure. The measurement device can be combined with or integrated into an article which is used daily such as a cigarette lighter, wristwatch, pocket calculator etc.