Light shielding sheet and lens

Abstract

The invention relates to a light shielding sheet and a lens, wherein the light shielding sheet comprises: a base layer; a base layer through hole disposed on the base layer; a first surface layer; a first through hole disposed on the first surface layer; a second surface layer; and a second through hole disposed on the second surface layer. The first surface layer and the second surface layer aredisposed on the two opposite sides of the base layer respectively. The base layer through hole, the first through hole and the second through holes are disposed coaxially. The first surface layer andthe second surface layer are film layers containing wax material. In the process of punching the first surface layer and the second surface layer, the first surface layer and the second surface layerare easy to be subjected to machining and matting treatment because of the wax material. The wax material has the advantage of reducing the friction during the processing so as to improve shearing efficiency, reduce machined burrs at a cross-section position, and smooth the cross section during the punching, thereby contributing to improvement in the image quality of the lens.

Description

Technical field [0001] The invention relates to the field of optical imaging, in particular to a shading sheet and lens. Background technique [0002] In recent years, portable electronic products have developed rapidly. For example, mobile phones and tablet computers have flooded the lives of modern people, and imaging devices mounted on portable electronic products have also flourished. With the development of science and technology, users have higher and higher requirements for the quality of portable electronic devices. Therefore, the use of this requires higher and higher imaging quality of imaging devices. [0003] The shading sheet is usually used to shield unnecessary light inside the imaging lens. The surface properties of the shading sheet have a direct influence on the stray light suppression effect. Therefore, the surface properties of the shading sheet jointly affect the imaging quality of the imaging lens. The surface of the existing shading element is prone to burrs...

AI Technical Summary

Problems solved by technology

The surface of the existing shading element is prone to burrs during stamping, and when the incident light passes through, the resulting burrs cause glare, which in turn affects the imaging quality of the imaging lens in the imaging device and is reduced

At the same time, the thickness consistency of the existing shading elements is easily affected during the matting process, thus affecting the quality and yield of the imaging lens

Images