The glass that can change the direction of light propagation and the relative spectral distribution of ultraviolet, visible or infrared light is called optical glass. The components composed of optical glass are the key components in optical instruments. Optical glass is the foundation and important part of optoelectronic technology industry. In today's society, with the continuous integration of optics, electronic information science and new material science, the application of optical glass as the basic material of Optoelectronics in the three fields of optical transmission, optical storage and optoelectronic display is advancing by leaps and bounds. Optical glass is widely used in all aspects of information acquisition, transmission, storage, conversion and display of optoelectronic products, This effectively promotes the development of optical glass to a higher level.
With the development of photonics technology, especially with the development of photonics technology, photons become the main carrier of information after electrons. The acquisition, transmission, storage, display and processing technology of information largely depends on the development of advanced optical functional materials and devices. Using the interaction between glass and light to change the polarization state, frequency, coherence and monochromaticity of light, as well as new optical functional glass to produce and detect photons, has become the main development direction of optical glass.
Optical filter can change the transmission direction of light, and can change the relative spectrum of ultraviolet, visible or infrared light. Optical glass has stable optical properties and high optical uniformity. Optical glass has the advantages of high temperature resistance, low coefficient of expansion, high mechanical strength and good chemical properties. It is used to make prisms, lenses, windows and mirrors with special requirements for various wave bands.
Optical glass lens is an essential part of machine vision system, which directly affects the quality of imaging and the implementation and effect of algorithm. Because different glass types have different characteristics, it is very important to choose optical glass materials.
1. The optical glass of laser lens has high light transmittance, which can reach 92%. If one or more layers of magnesium fluoride antireflective film are coated on the surface of the lens, the light transmittance of the lens can reach 99.2%.
2. Optical glass chemical stability -- acid, alkali and other chemical substances corrosion resistance.
3. The refractive index of optical glass is constant and accurate --- the refractive index is 1.523, which is constant and accurate, and the refractive index is accurate after processing.
4. The optical glass absorbs ultraviolet rays to avoid the damage to eyes caused by ultraviolet rays.