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By certification 
Features: VCM is the abbreviation for Voice Coil Motor. When used on cellphone camera, VCM functions as an automatic focusing mechanism. Spacer is the key component of VCM. In order to obtain good performance, accuracy of VCM spacer is required. Currently, VCM spacers are mainly manufactured through high precision etching process. Our VCM spacer is manufactured by chemical etching process. It has high precision, stress-free, burr-free, and no heat effect. Deformation is unlikely to occur. Additionally, the edges do not collapse easily. The benefits of etching cannot be achieved by other processing methods.
Main Applications: Cell Phones, Video Cameras, Camera Lenses on Tablets and Laptops.
Material Grade: Copper alloy
Thickness: 0.03mm~0.2mm
Dimensional Tolerance:
Key Parts Dimensional Tolerance Requirements is ±10% of material thickness
Ultra-Thin Materials (<0.05mm) Etching Dimensional Tolerance: ±0.008mm
Production Machineries: Our company has reliable suppliers providing high-quality raw materials for VCM spacers. We engage in high technology and innovative strategies backed by professional teams of engineers. Furthermore, we also have advanced production machineries such as precise etching machines, imported high precision automatic reel-to-reel exposure machines, development machines, pre-treatment cleaning machines, etc. to ensure product precision.
Quality Inspection Instruments:
Nikon VMR-6555 Automatic Image Measuring Instrument, Mitutoyo Tool Microscope
http://www.qdlightview.com/
