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Wenzhou Wanrun Glasses Co., Ltd.: Differences between optical glasses and ordinary glasses

As for the difference between optical glasses and ordinary glasses up to now, I believe that many children are very interested in learning about them,

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As for the difference between optical glasses and ordinary glasses up to now, I believe that many children are very interested in learning about them, because this topic is also very hot recently. Since everyone wants to know what is optical glasses and what is the difference between ordinary glasses, Wenzhou Wanrun Glasses Co., Ltd. has some information about the difference between optical glasses and ordinary glasses. Now let's share it with you.

Concept of optical glasses: use lenses, prisms, corneal contact lenses, intraocular lenses, etc. to correct vision, eliminate vision fatigue, and protect or treat eyes. There are many kinds of glasses, including optical glasses and contact lenses for correcting refractive errors. In addition to contact lenses, intraocular lenses can also be implanted to correct aphakic eyes. In addition, there are a variety of protective glasses, beauty glasses and low vision aids. All lenses are thin and their calibration is the reciprocal of the lens focal length (m).

What is the difference between optical glasses and ordinary glasses? It has nothing to do with the chemical composition and curing temperature area. They are obtained by undercooling of the melt. With the increase of viscosity, they have the mechanical properties of solids, and the transition from liquid to glass is reversible. It is mixed with high-purity silicon, boron, sodium, potassium, zinc, lead, magnesium, calcium, barium and other oxides according to a specific formula, melted in a platinum crucible at high temperature, and stirred evenly with ultrasonic wave to remove bubbles.

Then cool it slowly for a long time to avoid the internal stress of the glass block. The cooled glass block must be measured with an optical instrument to check whether its purity, transparency, uniformity, refractive index and dispersion index meet the specifications. Qualified glass blocks are heated and forged to form optical lens embryos. Optical lens has high transparency, high homogeneity of physical and chemical properties and specific optical constants.

These characteristics cannot be replaced by ordinary lenses. With the rapid development of modern science and technology, spectacle lenses made of new optical material resin are far superior to ordinary lenses in optical performance, safety performance and eye protection against harmful light. The article comes from the network. If there is infringement or violation, please contact us to delete it.

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