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镜片的选择与门道
作者:admin 来源:本站 发布时间:2017-12-22 13:11:43 浏览次数:213
  专家介绍:近视眼镜片的种类从使用材料上可分为:无机材料和有机材料;从近视眼镜片的发展上可分为:天然水晶镜片;光学玻璃镜片;光学树脂镜片。眼科专家指出:在矫正近视的同时,又能最好的保护眼睛的镜片就是最好的近视眼镜片。
    Expert introduction: the types of spectacles for myopia can be divided into inorganic materials and organic materials from the materials. From the development of nearsightedness lenses, they can be divided into: natural crystal lenses, optical glass lenses, optical resin lenses. Eye experts point out: in the correction of myopia, the best lens to protect the eyes is the best sighted glasses.
    近视眼镜哪种镜片最好,需要从成像效果、是否防眼疲劳、是否防有害的紫外线三方面考虑。研究发现,水晶片不能有效防止紫外线,而且里面天然矿物质杂质很多,光学成像效果不好,现在已经基本被淘汰了;玻璃的镜片防紫外线不够只能防到350nm,而紫外线的波长是295-380nm;树脂镜片可防紫外线在350nm- 380nm之间(也有部分可以防紫外线380nm以上)。当然还有很多种贴膜可以选择,加膜处理后可以增加镜片的表面硬度、防止眼疲劳等功能。

    Which is the best lens for myopia glasses, which needs to be considered from three aspects: the effect of imaging, the prevention of eye fatigue, and the prevention of harmful ultraviolet rays. The study found that the crystal can not effectively prevent ultraviolet ray, and natural mineral impurities in many optical imaging, the effect is not good, now has basically been eliminated; glass anti UV lenses only enough to prevent 350nm, and UV wavelength is 295-380nm; resin lenses can prevent ultraviolet ray in 350nm- 380nm (some can prevent ultraviolet 380nm above). Of course, there are many kinds of film can be selected, can increase the surface hardness of the lens, to prevent eye fatigue and other functions after coated.

    目前市场上使用较多的近视眼镜片有玻璃镜片,光学树脂镜片。玻璃镜片的硬度高、耐磨性能好,一般其质量及各项参数不会随时间而改变。树脂镜片按类型分为球面镜片和非球面镜片,非球面镜片相对于球面镜片,其周边相差较小,视物更真实,佩戴更美观;且折射率越高镜片越薄,硬度也越高。
    At present, the market with more myopia glasses has glass lenses, optical resin lenses. Glass lenses have high hardness and good wear resistance, and their quality and parameters will not change with time. The resin lenses are divided into spherical and aspherical lenses according to their type. Aspherical lenses have smaller difference around the spherical lenses compared with spherical lenses, and the objects are more realistic and wear more beautiful. The higher the refractive index is, the thinner the lenses are, the higher the hardness is.
    眼镜质量主要取决于镜片(镜片的价格通常是由品牌,成像效果和镀膜技术来决定的),而眼镜的价格主要取决于镜架。因此,近视眼镜质量,并非和价格成正比。

    The quality of glasses depends mainly on the lenses. The price of lenses is usually determined by brand, imaging effect and coating technology. The price of glasses depends mainly on the spectacle frame. Therefore, the quality of myopia glasses is not proportional to the price.

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