Encoder disks are the core components of high-precision rotary sensors, used to convert rotary motion into digital signals. These disks are typically made of circular metal or transparent substrates, patterned with precisely arranged lines or holes. These markings allow light to pass through or reflect back, enabling optical sensors to detect the rotation angle, direction, and speed.
Chemical etching is an ideal process for manufacturing encoder disks with line widths above 50μm, which is common in mid-to-high resolution applications. Compared to laser or dry etching, wet etching provides several benefits
This makes chemical etching a cost-effective and scalable solution for producing reliable encoder disks in industrial and mechatronic applications.
