Hee Han, Doo. “A Study on the Functional Spectacle Lens With Photochromic, UV Blocking and Polarization”. International Journal of Engineering & Technology 7, no. 2.33 (June 8, 2018): 1195–1198. Accessed May 5, 2024. https://www.sciencepubco.com/index.php/ijet/article/view/18015.