Shading sheet and manufacturing method of image lens→ with the shading sheet

發布時(shí)間(jiān):

2023-02-15 14:35

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 produc↔ts have also flourished. With the development o​f technology, users have higher and higher req™uirements for the quality of imaging equipment on portable electronic pro ducts. Therefore, in addition to the continuous improveme​nt of the quality of the optical design of the imaging equipment on the po✘rtable electronic pro₽ducts, improvements a↔lso need to be made in terms of improving the structure of the lightβ-shielding sheet, increasing the accuracy o♠f 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 porta→ble electronic product to block excess light >and prevent the generati•on of stray light. The commonly used light-shielding film is to recoλgnize the direction through different groove shapes. This type of groove r'ecognition easily transmits non-imaging light and forms€ stray light on the imaging surf∞ace, which affects the imaging quality of ​the image lens.

Technology realization factors:

According to one aspect of the present aσpplication, a light-shielding sheet for an imaging lens is provided." The light-shielding sheet includes a body having a fi£rst surface and a second surface opposite to the fir↔st surface, and a through hole penetrati↕ng the body. An identification l≤ayer having a color different from the col→or 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 provide¶d on the second surface.

"According to the embod®iment of the present appl®ication, the thickness H1 of the identif×ication layer may be less than or equal t←o 0.003 mm.

"According to the e↕mbodiment 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 b•ody has the shape of a circu<lar ring, and the ident≈ification layer can extend a distance greatφer than or equal to 0.05 mm∏ in a direction perpendicular to the radial↕ direction of the body.

"According to the embodiment of the presen♠t application, the area S of the marki✔ng layer and the area S1 of the first surface or the area S2 of th∞e second surface may satisfy: S≤2/3S1; or ‍S≤2/3S2.

"According to the embodiment of the present application, the d♣istance H between the first surfac☆e and the second surface may sa'tisfy 0.01mm≤H≤0.2mm.

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

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

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

"According to the embodimen★t of the present application, the p♥attern may include a strip, triangle, circle♦, or star pattern, etc.

According to another aspect ofπ the present application, an‌ imaging lens is provided, and the imag↕ing lens includes the above-mentioned light-shi"elding sheet.

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