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 of 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 improvement 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.
推薦新聞