Patent ID: 7929231
Filing Date: 2011-04-19
Classification: G02B

Abstract:
1. A lens module comprising: a barrel comprising a circular peripheral barrel wall, the peripheral barrel wall comprising an inner stepped surface with a plurality of steps and an outer stepped surface with a plurality of steps, an inner diameter and an outer diameter of the barrel both gradually increasing from an object side to an imaging side; a holder receiving the barrel therein, the holder comprising a peripheral holder wall, the peripheral holder wall comprising an inner stepped surface with a plurality of steps, an inner diameter of the holder gradually increasing from the object side to the imaging side, the steps of the outer stepped surface of the peripheral barrel wall engaged with the steps of the inner stepped surface of the peripheral holder wall; and a plurality of lenses received in the barrel on the respective steps of the inner stepped surface of the peripheral barrel wall, diameters of the lenses gradually increasing from the object side to the imaging side.