The image-forming lens system, the photographic unit, and the electronic components.

Abstract

The invention relates to an image-forming lens system comprising five lens elements which are, in order from object-side to image-side along the optical path: first lens element, second lens element, third lens element, fourth lens element and fifth lens element. Each of the five lens elements has an object-side surface facing the object and an image-side surface facing the image. The first lens element has a positive refractive power. The second lens element has a negative refractive power, and the image-side surface of the second lens element is concave in its anti-axial region. The invention also relates to an image-taking device and electronic equipment.

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