Optical imaging lens

An optical imaging lens, comprising an outer cover, a lens barrel, and a plurality of lens elements disposed in the lens barrel from an object side to an image side along an optical axis, wherein

• the lens barrel comprises a front end portion close to the object side and a back end portion close to the image side;
• the front end portion comprises a lens barrel object-side opening, the back end portion comprises a lens barrel image-side opening, and an inner diameter of the lens barrel object-side opening is less than an inner diameter of the lens barrel image-side opening;
• the front end portion of the lens barrel has a lens barrel annular plane perpendicular to the optical axis and located on a reference plane;
• the outer cover being cone-shaped and disposed on an outer surface of the front end portion of the lens barrel;
• the outer cover comprises an outer cover object-side opening and an outer cover image-side opening, and a maximum outer diameter of the outer cover object-side opening is less than a maximum outer diameter of the outer cover image-side opening;
• the outer cover has an outer cover annular plane close to the object side and perpendicular to the optical axis, and an inner ring conical surface and an outer cover conical surface adjacent to the outer cover annular plane;
• a length of the outer cover on the optical axis is greater than 40% of a length of the lens barrel on the optical axis;
• and
• the optical imaging lens satisfies a following condition, 0.450≤Tcv/Wbr≤1.400, wherein Tcv is a thickness of the outer cover on the reference plane, and Wbr is a width of the lens barrel annular plane on the reference plane.