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Photochromic Lens In Mass

Number of views:
1000

1.56 SF Photochromic Flat Top/Round top/Blended Faster&Darker(Grey) 70/28MM

Product Name: 1.553 Photochromic Lens
Material:Photochromic Oligomer
Refractive Index (25℃):1.548
UV Cut Off:370
Abbe Value:41
Specific Gravity (20℃):1.21
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Number of views:
1000
Product serial number
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Product Details
Parameters

Tooling Index=1.530

Super photochromic factor added into the monomer make the lens clearer indoors and darker outdoors, Better adapt to environmental changes and UV protection.

● Super dark
● Faster change
● Long-lasting
● UV protect
● Anti-glare

Diameter(mm) NominalCurve Truecurve RadiusofCurvature SAG40(mm) SAG50(mm) BackCurve C.T.(mm) E.T.(mm)
70mm 2.00 2.35 225.17 0.88 1.39 4.23 9.20 11.10
70mm 4.00 4.12 128.66 1.56 2.45 4.23 7.60 7.50
70mm 6.00 6.03 87.90 2.30 3.63 6.43 7.50 7.60
70mm 8.00 7.95 66.67 3.07 4.86 6.43 9.20 6.50

 

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