Optical lens assembly for image photographing

Abstract

An optical lens assembly for image photographing, in order from an object side to an image side comprising: a first lens element with positive refractive power having a convex object-side surface; a second lens element with positive refractive power; a third lens element with positive refractive power having a convex image-side surface; a plastic fourth lens element with negative refractive power having a concave image-side surface, both object-side and image-side surfaces being aspheric, and having at least one inflection point. Additionally, the optical lens assembly for photographing image has an image sensor on the image plane for imaging a photographed object and satisfies specific conditions. Thereby, this invention has a high resolving power and can shorten the total length of the lens assembly for using in camera and mobile phone camera with well photographing abilities.

Dependencies are inferred from the claim text.