In recent years, portable electronic products have developed rapidly, such as mobile phones, tablet computers, etc., which have flooded the lives of modern people, and imaging devices mounted on portable electronic products have also flourished. With the development of technology, users have higher and higher requirements for the quality of imaging equipment on portable electronic products. Therefore, in addition to the continuous improvement of the quality of the optical design of the imaging equipment on the portable electronic products, improvements also need to be made in terms of improving the structure of the light-shielding sheet, increasing the accuracy of assembly, and improving the imaging quality of the imaging lens.

Usually, a shading sheet is set between the lenses of the imaging device on a portable electronic product to block excess light and prevent the generation of stray light. The commonly used light-shielding film is to recognize the direction through different groove shapes. This type of groove recognition easily transmits non-imaging light and forms stray light on the imaging surface, which affects the imaging quality of the image lens.

Technology realization factors:

According to one aspect of the present application, a light-shielding sheet for an imaging lens is provided. The light-shielding sheet includes a body having a first surface and a second surface opposite to the first surface, and a through hole penetrating the body. An identification layer having a color different from the color of the first surface is provided on the first surface; or an identification layer having a color different from the color of the second surface is provided on the second surface.

"According to the embodiment of the present application, the thickness H1 of the identification layer may be less than or equal to 0.003 mm.

"According to the embodiment of the present application, the marking layer may partially cover the first surface or the second surface.

According to the embodiment of the present application, the body has the shape of a circular ring, and the identification layer can extend a distance greater than or equal to 0.05 mm in a direction perpendicular to the radial direction of the body.

"According to the embodiment of the present application, the area S of the marking layer and the area S1 of the first surface or the area S2 of the second surface may satisfy: S≤2/3S1; or S≤2/3S2.

"According to the embodiment of the present application, the distance H between the first surface and the second surface may satisfy 0.01mm≤H≤0.2mm.

"According to the embodiment of the present application, the through hole is formed into a single-sided chamfered shape, and wherein the outer diameter D1 of the body and the minimum inner diameter D2 of the through hole can satisfy 0.25mm≤(D1-D2)/2≤3mm.

"According to the embodiment of the present application, the through hole is formed into a single-sided chamfered shape, and wherein the outer diameter D1 of the body and the minimum inner diameter D2 of the through hole can satisfy 0.1≤D2/D1≤0.9.

According to the embodiment of the present application, the identification layer is a color band of a recognizable pattern.

"According to the embodiment of the present application, the pattern may include a strip, triangle, circle, or star pattern, etc.

According to another aspect of the present application, an imaging lens is provided, and the imaging lens includes the above-mentioned light-shielding sheet.