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http://dx.doi.org/10.15207/JKCS.2018.9.4.093

Assessment of UV Blocking Performance for Development of Converged Technologies of Vision Correcting Spectacle Lenses  

Kim, Heung-Soo (Dept. of Optometry, Daejeon Health Institute of Technology)
Publication Information
Journal of the Korea Convergence Society / v.9, no.4, 2018 , pp. 93-98 More about this Journal
Abstract
This study was wanted to confirm ability for UV blocking according to its material. The lenses materials were Acryl, CR-39, NK-55, and MR-8. It was grouped: Group A consisting of anti-scratch hard coated lenses and anti-refractive multi coated lenses, Group B added UV blocking coating on the group A, and Group C consisting of only UV blocking lenses. The results measured UV transmittance, On the UV-A wavelength, Group A showed the UV transmittance of 7.726%, 0.043%, 0.007%, and 0.007% respectively. Group B showed 0.038%, 0.037%, 0.007%, and 0.007%, respectively. The UV-blocking performance of CR-39 has been greatly improved. Group C has shown the best UV blocking function; only 0.005% and 0.004% of UV transmittances.(1.60 and 1.67 index of refraction respectively). For the low power of lenses and sunglasses, the CR-39 lens is the most used. Therefore, to UV blocking from the lens, new materials or UV absorbers or UV coating technology and development of Converged Technologies are required.
Keywords
Vision-correction; Spectacle lenses; Ultraviolets; UV transmittance; UV absorber; Converged;
Citations & Related Records
Times Cited By KSCI : 6  (Citation Analysis)
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