Optical lens systems for imaging, photographic devices and electronic equipment

Abstract

The invention relates to an optical lens system for shaping light comprising eight lens elements, in order from the object side to the image side along the optical path: the first lens element, the second lens element, the third lens element, the fourth lens element, the fifth lens element, the sixth lens element, the seventh lens element, and the eighth lens element. Each of the eight lens elements has an object-facing surface and an image-facing surface. The eighth lens element has negative refractive power. The object-facing surface of the eighth lens element is convex in its axonometric region. The image-facing surface of the eighth lens element is concave in its axonometric region and has at least one critical point in its off-axis region. The total number of lens elements in the optical imaging system is eight. Furthermore, the invention relates to an imaging apparatus comprising this optical imaging system, and an electronic device comprising at least two of these imaging apparatuses.