Applied Optics

The traditional concept of applied optics refers to the theory and design of optical systems through optical instruments (telescopes, microscopes, cameras, projectors), and its contents are mainly geometric optics and wave optics. With the rapid development of optical disciplines, such as the emergence of laser and its wide application, the development of optical fiber communication and optoelectronic imaging technology, and the combination of optics and computer technology, optical instruments have undergone a huge transformation from traditional to modern.
The connotation of applied optics, which is the basis of optical engineering, is also expanding, and it is gradually covering the basic content of some modern optics. It is composed of many sub-disciplines closely related to physics; because it has a wide range of applications, there are also a series of sub-disciplines with strong application backgrounds that also belong to the scope of optics. For example, photometry and radiometry related to the measurement of physical quantities of electromagnetic radiation; colorimetry to study the color vision caused by electromagnetic radiation and the measurement of psychophysical quantities with the normal average human eye as a receiver; and many Technical optics: optical system design and optical instrument theory, optical manufacturing and optical testing, interferometry, thin film optics, fiber optics and integrated optics, etc.; there are also branches that intersect with other disciplines, such as astronomical optics, ocean optics, remote sensing optics, Atmospheric optics, physiological optics and weapon optics, etc.