Spectrometer, also known as spectrometer, widely recognized as direct reading spectrometer. It is a device that measures the intensity of a spectral line at different wavelength positions with a photodetector such as a photomultiplier tube. It consists of an incident slit, a dispersion system, an imaging system and one or more exit slits. A dispersive element is used to separate the electromagnetic radiation from a source into the desired wavelength or wavelength region, and the intensity is measured at a selected wavelength (or by scanning a certain wavelength band). Divided into monochromator and multicolor instrument two kinds.
Expanded Information:
Optical instrument that separates complex color light into a spectrum. There are various types of spectrometers, including infrared spectrometers and ultraviolet spectrometers, in addition to those used in the visible wavelength band.
By the different dispersion elements can be divided into prism spectrometer, grating spectrometer and interference spectrometer. According to the detection method, there are directly observed with the eyes of the spectroscope, with the photographic film recorded by the regent spectrometer, as well as photoelectric or thermoelectric components to detect the spectrum of the spectrophotometer and so on. Monochromator is a spectroscopic instrument that outputs only a single chromatographic line through the slit, often used in conjunction with other analytical instruments.