WIDE-ANGLE IMAGING LENS ASSEMBLY WITH TWO LENSES

摘要

A wide-angle imaging lens assembly comprises a fixing diaphragm and an optical set including two lenses. An arranging order from an object side to an image side is: a first lens with a positive refractive power, a convex surface directed toward the object side, and a convex surface directed toward the image side; and a second lens with a positive refractive power, a concave surface directed toward the object side, and a convex surface directed toward the image side. Two surfaces of the two lenses are aspheric. The fixing diaphragm is disposed between an object and the second lens. By the concatenation between the lenses and the adapted curvature radius, thickness/interval, refractivity, and Abbe numbers, the assembly attains a big diaphragm with ultra-wide-angle, a shorter height, and a better optical aberration.

主权项

1. A wide-angle imaging lens assembly with two lenses comprising a fixing diaphragm and an optical set; said optical set including a first lens and a second lens, an arranging order thereof from an object side to an image side being:
said first lens having a lens with a positive refractive power, a convex surface directed toward said object side, and a convex surface directed toward said image side; two surfaces of said first lens being aspheric; said second lens having a lens with a positive refractive power, a concave surface directed toward said object side, and a convex surface directed toward said image side; two surfaces of said second lens being aspheric; and said diaphragm disposed between an object and said second lens.