Review some basic principles of the shading ring
The shading ring is based on the principle of physical phenomenon (small hole imaging), and the processing requirements are relatively strict.
Therefore, the requirements for materials also have a higher level of demand. The Japanese SOMA shading material is basically used in the market. It is a double matt black PET.
The shading ring plays a role of shading, such as the shading ring of the mobile phone lens and the lens shading ring of the camera lens. It is a piece of Mylar sheet that is stamped with SOMA shading material and embedded in the lens. Because of the shading function, everyone calls it Shading ring, shading gasket. Its principle is based on the principle of physical phenomenon (small hole imaging), and the processing requirements are relatively strict.
Digital camera or mobile phone lens, surveillance lens, car lens, etc. SOMA shading ring, shading film, SOMA shading Mylar film, tolerance is plus or minus 0.01. The company specializes in manufacturing high-precision metal stamping molds and precision stamping products for metal and non-metal sheets. The outer dimension tolerance can be guaranteed to be within ±0.005MM, and the concentricity is guaranteed to be within ±0.01MM, which has the function of ultra-thin processing.