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A method for manufacturing a light-shielding sheet used in mobile phone lenses

Release Date:

2021-06-30 11:10

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A method for manufacturing a light-shielding sheet used in mobile phone lenses

　　With the advancement of mobile photography technology, the demands on smartphone lenses are steadily increasing. Current smartphone lenses typically consist of multiple lens elements, and to block stray light, an aperture diaphragm is installed between the lens elements.

　　In conventional light‑blocking plates, the light‑transmitting apertures are simply holes, and their inner walls are left untreated. Because these plates are designed to block excess light, the areas surrounding the apertures tend to concentrate relatively strong illumination. When the plate is relatively thick, the inner walls of the apertures reflect even more light, which can then cast distracting shadows on the image plane, degrading the image quality.

　　Moreover, reducing the thickness of the light‑blocking plate also causes its inner walls to reflect light, rendering the plate incapable of undergoing the requisite matte‑finishing treatment. Alternatively, applying a matte coating to the inner surfaces of the light‑transmitting apertures can address the issue of internal wall reflection; however, this approach entails higher costs, greater operational complexity, and inconsistent performance.

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