Patent ID: 8724235
Filing Date: 2014-05-13
Classification: G02B

Abstract:
1. A photographing lens system comprising, in order from an object side to an image side: a first lens element with positive refractive power comprising a convex object-side surface and a convex image-side surface, and the object-side surface and the image-side surface being aspheric; a second lens element with negative refractive power comprising a concave object-side surface and a convex image-side surface, the second lens element being made of plastic and the object-side surface and the image-side surface being aspheric; and a third lens element with negative refractive power comprising an object-side surface and a concave image-side surface, the third lens element being made of plastic, the object-side surface and the image-side surface being aspheric, wherein the image-side surface is concave near an optical axis and convex away from the optical axis; the photographing lens system satisfying the following condition: wherein R wherein the total number of the lens elements with refractive powers is three.