The principle of prism is realized by the interaction of refraction and reflection of light. When light strikes the prism surface, it will be decomposed into different chromatograms. These colors will travel along different paths and will be refracted and reflected when passing through the prism.
Prisms are widely used. In optics, it is used to study the properties and propagation of light. In daily life, prisms are also widely used in sunglasses, cameras and monitors. For example, in sunglasses, the prism can deflect the angle of sunlight, reduce the stimulation of strong light, and make it easier for people to observe things around them.
Prisms have different types and uses, among which the most common is the triangular prism. A prism is an optical device with a triangular cross section. When light passes through a prism, it will be divided into different spectra, which is called dispersion. In daily life, prisms are widely used in glasses, cameras, telescopes, spectrometers and other fields.
Application of prism:
Optical instruments: Prisms are widely used in optical instruments, such as telescopes, microscopes and spectrometers. In these instruments, prisms are used to change the direction of light, decompose the spectrum and improve the imaging quality. For example, in a telescope, a prism is used to change the real image in the objective lens into a virtual image in the eyepiece to improve the clarity of observation; In spectrometer, prism is used to disperse light into different color spectra for analysis and measurement.
2. Optical communication: In the field of optical communication, prisms are used to realize the transmission and modulation of optical signals. For example, using the spectral characteristics of prism, optical signals with different wavelengths can be distributed to different optical paths, realizing wavelength division multiplexing technology and improving transmission efficiency and capacity. In addition, the prism can also be used to manufacture photoelectric devices such as beam redirector and beam controller to realize the modulation and control of optical signals.
3. Spectral analysis: Prisms are also widely used in the field of spectral analysis. Using the dispersion characteristics of prism, light with different wavelengths can be separated and analyzed. For example, in chemical analysis, prism can be used to analyze the absorption spectrum and emission spectrum of substances and determine the chemical composition and structure of substances. In addition, in astronomical observation, prisms are also used to analyze the spectra of celestial bodies for astrophysical research.