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19 February 2020 Prototype for blue light blocking tests in sunglasses
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Proceedings Volume 11218, Ophthalmic Technologies XXX; 112181N (2020) https://doi.org/10.1117/12.2543598
Event: SPIE BiOS, 2020, San Francisco, California, United States
Abstract
There is a strong association between exposure to blue light (from 400 nm to 500 nm), especially high-energy blue light (from 400 nm to 450 nm), and damage to ocular structures. And the use of blue filters can prevent the frequency of eye damage. This study aims to develop and build a prototype for measuring protection against blue light in sunglasses and to determine whether this protection is adequate, adopting as criterion its blue-light transmittance be less than 1.2 times its luminous transmittance. To obtain the proper spectral weighting functions, the measurement will consist of linear combinations of the responses of a TCS3472 photosensor illuminated by a high-brightness white LED. The agreement between the measurements made with the proposed device and a gold standard will be analyzed by the Bland-Altman method. The developed device will be available to public to measure their own sunglasses. Moreover, this device has potential for use in the trade to add value in sales of sunglasses and in the industry for quick conference of sunglasses produced.
© (2020) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Artur D. Loureiro and Liliane Ventura "Prototype for blue light blocking tests in sunglasses", Proc. SPIE 11218, Ophthalmic Technologies XXX, 112181N (19 February 2020); https://doi.org/10.1117/12.2543598
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