OPTICAL LENS

CR-39 is the most basic lens material available.
1. Material: CR-39
2. Abbe value:58
3. Transmission: Over 93%
4. Specific Gravity: 1.32
5. Available: Non-coating, hard-coating, multi-coating
1.56 Single Vision HMC Technical Data:
The 1.56 is 15% thinner than the 1.50 Standard.
1. Material: NK-55 2. Index: 1.553
3. Abbe Value: 35 4. Transimision: Over 96.5% 5. Specific Gravity: 1.28
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