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Products > material assistant > I&G Optics | Similar Products
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material assistant

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1.61 HMC lens

1.61 HMC lens
with refractive index of 1.61. It has specific gravity of 1.13 compared to conventional hi-lenses 1.34, making it 9.5 % lighter at 5.00 (72 mm) diopter. It's coating membrane density and hardness ...

Function

material (UV absorber) to the surface of completed lens. (may be discolored) Formulating UV absorber in the process of casting. Measuring UV rays with HOYA (model ULT 3000) at 310~380mm. 100% ...
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