Low-reflection plastic lens barrel, manufacturing method thereof, imaging lens group and camera device

The invention provides a low-reflection plastic lens barrel, a manufacturing method thereof, an imaging lens group and a camera device. The low-reflection plastic lens barrel is light-proof and comprises a barrel body section, a lens body section and a lens body section, the image end part is arranged at one end of the cylinder body section; the object end part is arranged at the other end of thecylinder body section; the surface of one side, far away from the barrel section, of the object end part comprises a plane section and a slope section; wherein the inclined plane section is close to the central axis of the cylinder section relative to the plane section, the inclined plane section inclines from the plane section to the direction close to the central axis and extends towards the image end part, the plane section and the inclined plane section are plated with antireflection films, each antireflection film comprises a substrate bonding layer and a microstructure layer, and the microstructure layers are fa