In an era where environmental sustainability is more critical than ever, industries relying on precision instruments like optical linear encoders face mounting pressure to embrace eco-friendly practices. Whether it's reducing carbon footprints, adopting recyclable materials, or ensuring responsible end-of-life disposal, manufacturers are challenged to combine high performance with environmental stewardship.Optical linear encoder are crucial components in CNC machines, robotics, and metrology equipment, delivering unmatched precision in measurement and positioning. However, the environmental impact of these encoders—especially regarding materials and recyclability—cannot be overlooked. This article explores six key strategies for enhancing the sustainability of optical linear encoders, focusing on sustainable material sourcing, material recyclability, safety, recycling systems, lifecycle assessments, and material innovations.