Infrared temperature measuring lens

Infrared temperature measuring lens, an instrument for measuring optical path difference or other parameters. An instrument made according to the principle of light interference. The two light beams from one light source are completely split and combined, each passing through a different optical path, and then combined again to show interference fringes. In spectroscopy, the Michelson interferometer can be used to accurately and accurately determine the wavelength of the spectrum and its fine structure. Principle of interferometer An optical instrument that uses an infrared temperature measuring lens to measure the optical path difference to determine the relevant physical quantity. Any change in the optical path difference between the two coherent beams will very sensitively cause the interference fringes to move, and the optical path change of a beam of coherent light is caused by the geometric distance it passes through or the change in the refractive index of the medium, so through interference The movement of the fringe can be used to measure the small change in geometric length or refractive index, so that other physical quantities related to this can be measured. The measurement accuracy is determined by the accuracy of the measurement of the optical path difference. Each time the interference fringe moves by a fringe pitch, the optical path difference changes by one wavelength (~10-7 meters), so the interferometer measures the optical path difference in units of the wavelength of the light wave. The high measurement accuracy is unmatched by any other measurement method.