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As a precision measuring tool, optical wire gauge plays a vital role in modern industry and science and technology. It combines moire fringe of grating and photoelectric conversion technology to provide a linear measurement benchmark with high accuracy, high stability and high reliability. This paper will introduce the principle, type, application, maintenance and calibration methods of optical wire gauge in detail.

Computer-Generated Holography (CGH) is a technique that generates a user-defined wave front through computer-generated holograms and optical reconstruction. This technique has been widely studied and applied in the field of information optics since it was proposed by German scientist Roman in the late 1960s. Computational holography can not only record the intensity of information, but also record its phase, which makes it have a wide range of applications in 3D display, optical information storage and processing, entertainment and encryption.

An American Standard resolution board, also known as a USAF 1951 resolution board or an Optical resolution inspection board, is a tool specifically designed to evaluate the resolution and imaging quality of optical systems. It is designed according to the US military standard MIL-STD-150A and has a wide range of applications, from high-precision optical systems for aerospace and astronomical observation to the manufacture of ordinary optical products in daily life.

Computer-Generated Holography (CGH) is a technique that generates a user-defined wave front through computer-generated holograms and optical reconstruction. This technique has been widely studied and applied in the field of information optics since it was proposed by German scientist Roman in the late 1960s. Computational holography can not only record the intensity of information, but also record its phase, which makes it have a wide range of applications in 3D display, optical information storage and processing, entertainment and encryption.

With the rapid rise of emerging technologies such as cloud computing and 5G, as well as the acceleration of global digitization, optical technology is becoming an indispensable part of this digital age. The prospects of this industry are very broad, as the widespread application of technology includes important fields such as electronic devices, automotive industry, and healthcare. In the coming years, with the continuous development of each industry, the optical industry will also receive more attention and importance.

Optical calibration board is an important measuring tool, which is widely used in many industrial and scientific fields. It provides precision in image measurement and analysis, determines the performance of various optical devices, and provides useful data for other technical fields. The following are some prospects and possible development directions for the application of optical calibration boards.