Optical measurement instrument that irradiates laser light onto target objects and performs non-contact, high-precision displacement, distance, and thickness measurements through reflected light position changes. Used for tool wear monitoring in machining equipment, dimensional inspection of parts, positioning in assembly processes, thickness measurement of metal and resin components, and workpiece position detection during cutting and grinding operations. Achieves micrometer-level high-resolution measurement through triangulation and confocal methods, and integrates into automation systems linked with CNC machines and FA equipment. Capable of measuring soft materials and high-temperature objects that are difficult with contact-type measuring instruments, enabling real-time quality control in manufacturing lines.