Adjustable optical lens and camera module and aligning method thereof

A camera module, comprising:

• an optical sensor, and
• an adjustable optical lens, which is optically coupled with said optical sensor, comprises a plurality of lens elements and an optical structure element which comprises a lens barrel, wherein said lens elements are spacedly and overlappingly arranged within said optical structure element, wherein at least one of said lens elements is permanently affixed to said optical structure element that an assemble position thereof is fixed, wherein at least one of said lens elements is configured as an adjustable lens element that an assemble position thereof is arranged to be adjustable along multiple directions selected from the group consisting of a horizontal direction, a vertical direction, an incline direction, and a peripheral direction to adjust relative positions between said adjustable lens element and other lens elements as well as a relative position between said adjustable lens element and said optical sensor before permanently affixed to said optical structure element, wherein one or more channels are provided in said optical structure element penetrating a thickness of said optical structure element and positioned with respect to said adjustable lens element to communicate an interior space of said optical structure element with an outside environment thereof for adjusting and permanently fixing said adjustable lens element in position within said optical structure element based on an image obtained by said optical sensor, so as to complete an alignment of said adjustable optical lens with said optical sensor for calibration, wherein an adhesive element is filled into at least one of said channels to a portion of said adjustable lens element after said alignment of said adjustable lens element is adjusted.