Patent ID: 9104009
Filing Date: 2015-08-11
Classification: G02B,G03B,H04N

Abstract:
1. An optical imaging system comprising, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, an aperture stop, a fourth lens element, a fifth lens element, and a sixth lens element arranged along an optical axis; wherein: the first lens element has a concave image-side surface in the vicinity of the optical axis; the second lens element has a negative refractive power; the third lens element has a convex object-side surface in a vicinity of the optical axis; the fourth lens element has a convex object-side surface in the vicinity of the optical axis; the fifth lens element has a convex image-side surface in the vicinity of the optical axis; the sixth lens element is made of plastic and has a convex image-side surface in a vicinity of an outer circumference; and the optical imaging system only has six lens elements having a refractive power.