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| NEWS |
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OUR PARTICAPATING IN OPTICAL FAIRS ::
SPECIALITY
PRODUCTS ::
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| 1.71 Hi-Index Blanks |
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Color |
| |
White |
Pink |
Brown |
| Refraction
Index (Nd) |
1.70 |
1.70 |
1.70 |
| Double
Refraction Index (nm/cm) |
<
80 |
<
80 |
<
80 |
| Density
(g/cm3) |
2.97 |
2.97 |
2.97 |
| Transmission
for White Light |
>
87% |
>
80% |
>
78% |
| Abbe Value
(Vd) |
32 |
32 |
32 |
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