This specialized dictionary contains around 15,000 terms in each language direction. It covers the fundamentals of optics and photography, as well as camera and lens construction, and the design of optical devices, including areas such as microscopy, electron microscopy, interferometry, photometry, precision measurement technology, geodesy, photogrammetry, astronomical telescopes, and optical lenses. The entries have been delineated wherever necessary with additions or area designations to ensure that precise classification is always possible.