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What is the optical lens

by:HENGXIANG     2020-11-16
Optical lens is the use of optical glass lenses, optical glass, is the definition of the refractive index, dispersion and transmission ratio, spectral transmittance and optical absorption optical properties have specific requirements, and optical properties of homogeneous glass. Can change the direction of propagation of light, and can change the ultraviolet, visible or infrared light of the relative spectral distribution of the glass. Special optical glass is colorless optical glass; Generalized optical glass include color optical glass, optical glass, quartz glass laser, resist radiation, ultraviolet, infrared optical glass, optical glass, light glass fibre, magneto optical glass and light color glass. Optical glass can be used in the manufacture of optical instruments in the lens, prisms, mirrors and Windows, etc. Made of optical glass components is a key component in optical instruments. Originally used in the manufacture of glass lenses, just like a knot on the window glass or bottle, similar in shape 'crown', the name of the crown glass or crown glass. At that time the uneven glass, much bubble. In addition to crown glass there is another lead more flint glass. Around 1790 French skin, and Louis are nader, found that stir sauce can make uniform texture glass. 1884 Zeiss firm ernst abbe and otto schott create short glass factory in the city of jena, Germany ( Schott Glaswerke AG) , dozens of kinds of optical glass is developed over several years, with the invention of the high refractive index of barium crown glass quality is one of the important achievement of short glass factory. Optical glass is made of high purity silicon, boron, sodium, potassium, zinc, lead, magnesium, calcium, barium oxide in a particular formula mix, high temperature melting in the platinum crucible, stir well with ultrasonic, to bubble; Then after a long period of time slowly cooling, lest produce internal stress in the glass block. After cooling the glass block, must go through optical instrument measurement, test of purity, transparency, uniformity, refractive index and dispersion rate is standard. Qualified glass block after heating forging, MAO embryo into optical lens. Relevant tags: optical lens manufacturers
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