Imaging lens assembly, imaging equipment and electronic devices

Abstract

The invention relates to an image-forming optical lens assembly comprising seven lens elements. The seven lens elements, in order from the object side to the image side along the optical path, are the first lens element, the second lens element, the second lens element, the fourth lens element, the fifth lens element, the sixth lens element, and the seventh lens element. Each of the seven lens elements has an object-facing surface and an image-facing surface. The first lens element has negative refractive power. The object-facing surface of the first lens element is concave in its axial region, and the image-facing surface of the first lens element is convex in its axial region. The object-facing surface of the second lens element is convex in its axial region. Under specific conditions, the optical image-forming lens assembly can be reduced in size while providing superior image quality. The invention also relates to the image-forming device and the electronic device.