Pocket electronic illuminometer belongs to the field of illuminance measurement technology, suitable for measuring illuminance in agricultural production, daily life, and outdoor travel. It uses a photosensitive resistor as a photoelectric converter device, which contains a DC power supply and is sequentially connected in series with a voltage conversion circuit, switch, photosensitive resistor, testing circuit, A/D converter, decoder, display driver, and display at the output end of the DC power supply. This utility model avoids the use of a photometric head, and the DC power supply only uses a 3V battery. The decoder, display driver, and display are integrated on a single integrated circuit card, making it simple in structure, small in size, easy to move, and also has the advantages of sensitive response. A ultraviolet radiation illuminometer belongs to optical testing instruments. Its characteristic is that it consists of two unidirectional cutoff optical filters and two identical photoelectric receivers to form a dual optical path detector. The circuit part adopts dual amplification, which can accurately measure the radiation value of the required test band. The stray light cutoff is strong