OPTICAL LENS, CAMERA MODULE AND ASSEMBLING METHOD

The present application provides an optical lens, comprising: a first lens component, a second lens component and a first glue material. A first lens sheet group of the first lens component and a second lens sheet group of the second lens component together constitutes an imageable optical system, wherein a second lens barrel of the second lens component has an outer top surface and an inner top surface, and the second lens sheet group bears against the inner top surface. The outer top surface comprises a glue spreading surface suitable for arranging the first glue material and an extension surface formed by extending from the glue spreading surface to a central axis of the second lens barrel, there is a first thickness from the glue spreading surface to the inner top surface, there is a second thickness from the extension surface to the inner top surface, and the first thickness is greater than the second thickness. The present application further provides a corresponding camera module and an assembling method. The present application can improve the mechanical strength and reliability of the black object of the second lens component, can improve the yield of the optical lens or the camera module, and contributes to the miniaturization of the camera module.