Infrared cut-off filter with ultralow angle offset effect

The invention provides an infrared cut-off filter with an ultralow angle offset effect, and belongs to the technical field of filters. The near-infrared narrow-band optical filter solves the problem that an existing near-infrared narrow-band optical filter is long in deviation degree. The infrared cut-off filter with the ultralow angle offset effect comprises an infrared narrow-band filter which is provided with an NBP film and an LP film; the structure of the NBP film is L (HM) n L, and the structure of the LP film is L (HL) n; h represents a high-refractive-index film layer with a basic thickness, M represents a medium-refractive-index film layer with a basic thickness, and L represents a low-refractive-index film layer with a basic thickness; one H or one M or one L represents that the film layer has 1/4 optical thickness at the reference wavelength, n represents the number of repetitions after the H film layer and the M film layer are overlapped, and m represents the number of repetitions after the H film