| 1.56 HMC high quality lens
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Production Details Material:NK-55 Refraction index Nd=1.56 Diameter:55mm/60mm/65mm/70mm Abbe value:38 Specific gravity:1.28 High scratch resistance 35% thinner than CR-39 lens HMC+EMI coating and Uv protection |
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| 1.56 HMC high quality lens
| |||||||
|
Production Details Material:NK-55 Refraction index Nd=1.56 Diameter:55mm/60mm/65mm/70mm Abbe value:38 Specific gravity:1.28 High scratch resistance 35% thinner than CR-39 lens HMC+EMI coating and Uv protection |
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