Optical Metrology is a branch of measurement science that uses light to assess the physical properties of objects. It involves techniques such as interferometry, laser scanning, and photogrammetry to measure dimensions, shapes, and surface characteristics with high precision. These methods are widely used in industries like manufacturing, aerospace, and electronics. The primary advantage of optical metrology is its non-contact nature, allowing measurements without damaging the object being analyzed. This makes it ideal for delicate components and complex geometries. Additionally, optical metrology can achieve high resolution and accuracy, making it essential for quality control and research applications.