An optical profilometer is a precision instrument used to measure the surface topography of materials. It employs light, often from a laser, to capture detailed images of a surface, allowing for the analysis of features such as roughness, texture, and height variations. This non-contact method is beneficial for delicate or small samples. These devices are widely used in various industries, including semiconductors, materials science, and biotechnology. By providing high-resolution measurements, optical profilometers help researchers and manufacturers ensure quality control and improve product performance by understanding surface characteristics better.