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CR-39 lens
the weight is very light,it is only about half of mineral lenses. And it is not easy to be impacted. its diapersive coefficient Vd. is small. Transmission rate is high. This lense ... |
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Mineral Photochromic(photogrey) Lenses
This lenses will change the color permanently under the sun,but the original color will not change.it has high index and good optical capability.the color will change according to ... |
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Mineral White Lenses
it is the traditional material for the optical mineral lenses. it has advantage of big abbe number,small dispersive coefficient Vd,high hardness,not easy to scratch, good ability ... |
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Hi-index White Lenses
Excellent optical character, not easy to scratch, adapt to correct middle and high vision balk, Thin thickness improve the facade of patient wearing the glasses and make the eye c ... |
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