Lens capable of realizing wide angle, image acquisition device and electronic equipment

Abstract

The invention provides a lens capable of realizing a wide angle, an image acquisition device and electronic equipment. The lens comprises a first lens part providing a concave lens function and a second lens part providing a convex lens function; the first lens part is constructed by a Fresnel concave lens, and a first arc-shaped groove group formed on the surface of the Fresnel concave lens comprises a plurality of arc-shaped grooves; the second lens part is constructed by a Fresnel convex lens, and a second arc-shaped groove group formed on the surface of the Fresnel convex lens comprises a plurality of arc-shaped convex grooves; the first lens part and the second lens part are attached to each other, and the first arc-shaped groove set and the second arc-shaped groove set face the outer side. In a wide-angle imaging state, light rays enter from one side of the first lens part and exit from one side of the second lens part, so that a wide-angle light path is realized; according to the lens and the image acquisition device provided by the embodiment of the invention, the design of an ultrathin structure is provided, so that the required space is reduced, a wide-angle effect is realized, and switching of different shooting angles is realized.

Description

technical field [0001] The invention belongs to the field of optical technology, in particular to a wide-angle lens and electronic equipment. Background technique [0002] The cameras currently used in notebook computers all use a single-angle lens, which cannot meet the demand for wide-angle due to the limitation of the space of the notebook computer. And in many scenarios, the support of wide-angle lenses is required. In order to achieve a wide-angle effect in a limited space, the existing wide-angle lens usually adopts a thick convex lens or a combination of multiple lenses, resulting in a large space occupation, and this structure cannot be switched between a single angle and a wide angle in time . [0003] Currently, two cameras are usually used to switch between wide-angle and non-wide-angle lenses. However, using two cameras to achieve a wide angle will increase the overall cost and pose a big challenge to the device space. In particular, the current trend of mini...

AI Technical Summary

Problems solved by technology

However, using two cameras to achieve wide-angle, the overall cost increases, and it is also a big challenge for the device space

In particular, the current trend of electronic equipment as a whole is developing towards miniaturization. The above-mentioned methods will affect the design of the appearance of electronic equipment and reduce user experience; in addition, the use of dual-camera requires software support to realize angle switching.

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