Cylindrical lenses are optical components with curvature along a single axis, enabling one-dimensional focusing of light into lines or elongated patterns. They are manufactured from materials such as BK7, fused silica, and infrared glass using precision grinding and polishing techniques. Key parameters include radius accuracy, axis alignment, and surface quality, which determine beam uniformity and optical efficiency. These lenses are widely used in laser line systems, machine vision, barcode scanning, and optical measurement equipment.