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KMID : 1011420190240040439
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Journal of Korean Ophthalmic Optics Society
2019 Volume.24 No. 4 p.439 ~ p.445
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Analysis of the Optical Characteristics of Mirror-coated Sunglasses
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Kim Ha-Rim
Jeong Ju-Hyun
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Abstract
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Purpose: In this study, the optical properties of mirror-coated sunglass lenses being sold on the market were analyzed.
Methods: The transmittance of mirror-coated sunglass lenses was measured. They were classified as a pass or fail as per the American National Standards Institute (ANSI) Z80.3 color regulations. Additionally, the measured transmittance was analyzed by dividing the blue light area into Blue Light 1, 2, and 3.
Results: Twelve mirror-coated sunglass lenses were measured as having 0% ultraviolet (UV) transmittance. This shows that they could prevent eye diseases caused by UV rays. Transmittance in the blue light area was measured from 5% up to 14%. Very low transmittance was measured with an average of 5.75% in Blue Light1. The spectral luminance results calculated in the visible spectrophotometry (380~750 nm) area at 555 nm had a high value of 13 for RG01, and 2.45 for RS02. Of the mirror-coated sunglass lenses analyzed following the ANSI Z80.3 regulations, 10 lenses passed and 2 lenses failed.
Conclusions: The mirror-coated sunglass lenses shielded 100% of the UV, and the spectral luminance was significantly different. The RS01, RS02 lenses failed to meet the requirements of the ANSI Z80.3 regulations.
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KEYWORD
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Mirror coating, Transmittance, Blue light, ANSI Z80.3
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