The invention relates to a photosensitive dry film, a sensor containing the photosensitive dry film and a UV device for preparing the sensor, and the photosensitive dry film comprises the following components in parts by weight: 0.1-10 parts of a cured resin
monomer, 0.1-10 parts of developing resin, 0.001-0.1 part of a
photoinitiator and 90-95 parts of a
diluent, wherein the
structural formula of the cured resin
monomer is # imgabs0 #. Compared with a conventionally used dry film based on a
polyurethane acrylate monomer, the photosensitive dry film provided by the invention has the advantages that C = C double bonds are added at the two ends of the monomer structure, and the content of the C = C double bonds at the ends of the monomer is increased, so that the number of monomer reaction functionality is increased; meanwhile, the cured resin monomer structure of the photosensitive dry film increases-CO-of an
electron withdrawing group beside a C = C
double bond, so that a pi-pi conjugate effect is formed, the reaction activity can be improved, conversion of the C = C
double bond is accelerated, and the photosensitive dry film which is high in curing efficiency and capable of reducing generation of yellow substances can be obtained in cooperation with components such as developing resin and a
photoinitiator. According to the sensor provided by the invention, the
UV filter is used for filtering light, and the optical use requirement can be met.