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Processing method of shading ring and manufacturing method of shading ring

发布时间：

2023-02-15 14:35

　　A processing method of the light-shielding ring and the light-shielding ring, the method comprising the steps of: providing a light-shielding ring, the light-shielding ring comprising a body, an antistatic coating coated on the body and formed on the body The body is made of a plastic material, and the anti-static coating is a carbon powder layer; a matte structure is formed on the hole wall of the through hole by alkali solution corrosion.

　　The processing method of the light-shielding ring and the light-shielding ring, the light-shielding ring is processed in the ultrasonic generator with an alkaline solution to form a matte structure on the hole wall of the through hole of the light-shielding ring to avoid reflection caused by the hole wall of the through hole The occurrence of undesirable conditions such as glare, halo and ghosting, which in turn guarantees the shooting effect and improves the quality of the camera products.

　　High-pixel mobile phones and digital cameras generally need to place 3 to 5 light-shielding rings inside the camera to adjust the aperture and block other stray light. In the past, they were processed by metal stamping and blackened by oxidation to achieve full extinction. The purpose, but the cost and plastic shading ring are several times more expensive.

　　In recent years, as the cost has dropped significantly, it has been replaced by direct stamping of polyethylene terephthalate (PET) raw materials with anti-static and high light-shielding coatings on the surface. However, as the pixels become higher and higher, after the plastic stamping The section of the inner hole will leave a shiny cut surface, and it cannot be treated with traditional blackening and matting like metal, so that obvious glare, halo, and ghosting (FLARE) are caused.

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