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Proceedings Paper

Prototype for blue light blocking tests in sunglasses
Author(s): Artur D. Loureiro; Liliane Ventura
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Paper 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.

Paper Details

Date Published: 19 February 2020
PDF: 3 pages
Proc. SPIE 11218, Ophthalmic Technologies XXX, 112181N (19 February 2020); doi: 10.1117/12.2543598
Show Author Affiliations
Artur D. Loureiro, Univ. de São Paulo (Brazil)
Liliane Ventura, Univ. de São Paulo (Brazil)


Published in SPIE Proceedings Vol. 11218:
Ophthalmic Technologies XXX
Fabrice Manns; Arthur Ho; Per G. Söderberg, Editor(s)

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