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Anonymous users2024-02-15If you don't look at the brand, it must be thinner than it, and it is also expensive. This is related to the degree, and the ordinary refractive index is used below 300 degrees.
It is enough, and it is enough to use it at about 300 degrees, but it is not only wasteful, but it is uncomfortable to look around the range lens. The higher the refractive index and the thinner it is, the more expensive it is, but the dispersion at the edge of the lens is more severe, and it is not as comfortable as a thick lens. It can be used at about 600 degrees.
In terms of the quality and popularity of the lenses, it is definitely Essilor.
of the good. You should use lenses with a reasonable refractive index according to the power, and you need to pay attention to this first. Each brand has a suitable refractive index.
After choosing the refractive index, you don't have to use the budget ** to choose what lenses. If you want to change your glasses every year, you can also use domestic lenses or Korean lenses, which are several times cheaper. The wholesale price of monopoly sales of big brands is very high, and the selling is also very expensive, and the cost of raw materials is not a few dollars at all.
If you are more demanding, pay attention to the brand value.
Then choose Essilor. Kodak.
The usage rate is not high, the popularity is not high, and if I choose Kodak, I would rather use ordinary domestic ones.
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Anonymous users2024-02-14Hello, the thickness of spectacle lenses is related to many factors, including the size of your frame (other things being equal, the larger the lens, the thicker the lens) the power of the glasses (other things being equal, the higher the power, the thicker the lens), the refractive index of the lens (other conditions being equal, the lower the refractive index, the thicker the lens) The manufacturer has a relationship (other conditions are equal, the big brand is thicker than the miscellaneous brand, this is based on safety reasons) Essilus thin lenses refer to the refractive index of 1,6, according to your powerwith a refractive index of 1,6.
Big brand lenses.
It will indeed be thicker.
It will be more noticeable if you make the lenses larger, and if you are simply looking for thinness.
Lenses with a high refractive index, small frames, and small brands can be appropriately selected.
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Anonymous users2024-02-13Kodak spectacle lenses were acquired by Essilor, which handed over Kodak to another subsidiary, Wanxin Manufacturing.
In addition, Essilor is an international brand, and the craftsmanship is definitely much better than Kodak.
As for still, in fact, it mainly depends on your needs, the Kodak is definitely lighter and thinner, but the Essilor fusion effect will definitely be better, and it is more comfortable to wear.
And because the thickness of the lens is not very obvious.
Therefore, the conclusion is to use lenses with Essilor refractive index.
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