Patent ID: 10082644

Abstract:
An optical lens assembly includes a first lens of an image-side surface with a concave portion near its optical-axis and a concave portion near its periphery, a second lens of negative refractive power and of an object-side surface with a concave portion near its periphery, a third lens of an object-side surface with a concave portion near its periphery, a fourth lens of an image-side surface with a convex portion near its optical-axis and a convex portion near its periphery, a fifth lens of positive refractive power and an image-side surface with a concave portion near its optical-axis, and a sixth lens of an image-side surface with a concave portion near its optical-axis. A total thickness of all six lens elements ALT, an air gap G56 between the fifth lens element and the sixth lens element and a sixth lens element thickness T6 satisfy ALT/(G56+T6)≤2.6.