Optical surfaces refer to surfaces that are specifically designed to interact with light in a controlled manner. This can include surfaces that reflect, transmit, or scatter light for various applications such as lenses, mirrors, filters, and prisms. Research in this area focuses on the design, fabrication, and characterization of optical surfaces to improve their performance and achieve desired optical properties. This research is important for various industries such as optics, photonics, telecommunications, and imaging. Techniques such as precision polishing, coating, and metrology are often used in the study of optical surfaces.