The pocket electronic illuminance meter belongs to a kind of illuminance measurement technology field, which is suitable for measuring illuminance in agricultural production, daily life and outdoor travelling. It adopts a photoresistor as a photoelectric conversion device, and it contains a DC power supply, a voltage conversion circuit, a switch, a photoresistor, a test circuit, an A/D converter, a decoder, a display driver, and a display in series in turn at the output of said DC power supply. The utility model avoids the use of photometric head, the DC power supply can be used only with a 3V battery, the decoder, the display driver and the display are integrated on an integrated circuit card, making it simple in structure, small in size, easy to move, and also has the advantages of sensitive response. A kind of ultraviolet radiation illuminance meter, belongs to optical test instrument. It is characterised by two unidirectional cut-off optical filters and two identical photoelectric receivers constitute a double optical circuit detector, the circuit part of the double amplification, so as to be able to accurately measure the radiation value of the required test band, stray light cut-off is very strong!