Optical lens assembly, photographic equipment and electronic devices

Abstract

The invention relates to an optical lens assembly. An optical lens assembly comprises, from the object side to the image side, at least five optical lens elements. At least one of the optical lens elements includes an anti-reflective coating, and the optical lens element including the anti-reflective coating is made of a plastic material. The anti-reflective coating is arranged on the object-side or image-side surface of the optical lens element including the anti-reflective coating. The anti-reflective coating comprises at least one layer, and the outer layer of the anti-reflective coating is made of metal oxide. The anti-reflective coating comprises numerous pores, and the size of the pores adjacent to the outer part of the anti-reflective coating is relatively larger than the size of the pores adjacent to the inner part of the anti-reflective coating. The invention also relates to photographic equipment comprising optical lens assemblies and electronic equipment comprising photographic equipment.