편광렌즈의 광학적·물리적 특성에 관한 연구

다국어 초록 (Multilingual Abstract)

Purpose: The purpose of this study was to investigate the optical and physical properties of different polarized lenses commercially available in Korea. Methods: Optical (transmittance and reflectance) and physical (heat- and wear-resistance) properties were evaluated for six different polarized lenses. Transmittance was measured and divided into three blue-light regions. Heat-resistance was evaluated using the time taken by the coating layer to crack. Lenses were placed in a heater, which was pre-heated to 80℃, and the presence of cracks was assessed every 10 min. The wear-resistance test was performed with a pen scratch. Results: All six samples showed a high ultraviolet (UV) blocking ratio in UVC (200-280 nm) and UVB (280-320 nm) regions, with transmittance of 0. Transmittance increased to 1.63% in the UVA (320-380 nm) region and gradually to 17.39% in the visible spectrum (VIS, 380-750 nm) region. Spectral luminance in the VIS (380-750 nm) region was 16.73-24.45%. Average reflectance in the VIS region (380-750 nm) was 4%. Time taken for the coating layer to crack was 120 min in the heat-resistance test. Conclusions: All polarized lenses included in this study completely blocked UVC and UVB light. Average reflectance in the VIS region (380-750 nm) was 4.4%. Average pencil hardness was 6H, containing 250 g of graphite.

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