Mr. Dominick Hubacz Profile

Dominick Hubacz

at Essilor International SA

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Proceedings Article | 18 June 2024 Poster + Paper

Instrumented eyewear with regular design: a new tool for continuous real-life measurement of visible light arriving at the ocular surface

Alexandre Gourraud, Cédric Gilbert, Camille Ehrismann, Eléonore Pic, Ludovic Jouard, Alexis Raposo, Dominick Hubacz, Khalil Ben Ghorbel

Proceedings Volume 13009, 130090H (2024) https://doi.org/10.1117/12.3017149

KEYWORDS: Sensors, Eyewear, Optical sensors, Design, Visible radiation, Eye, Metrology, Optical testing

Read Abstract +

Today, the scientific literature agrees on the importance of light as a regulator of our biological clock and its impact on physiological and neuroendocrine functions as well as visual health. Refining our understanding of the effects of light in terms of levels, spectrum and temporality requires the collection of real time, continuous data as close to the subject's ocular surface as possible. In addition, most sensors typically provide visible light data integrated over a range of wavelengths and already weighted by a sensitivity curve, limiting further analysis and translation of measured data for simultaneous assessment of multiple physiological parameters. To the best of our knowledge, there is currently no device that fulfils all these conditions, is aesthetically acceptable and does not interfere with the wearer's daily life.

We have therefore developed instrumented eyewear that incorporates visible light sensors, wear sensors and an on-board memory that enables continuous data flow recording every 30 seconds for 36 days. The integration of the sensors and the design of the eyewear make it possible to have a light quantification device that is acceptable and wearable every day, whether in terms of aesthetics, comfort, or use.

Our visible light sensors have been specifically selected to provide spectral irradiance and illuminance received at the ocular surface. Their positioning, integration and pre-laboratory calibration ensure accurate, repeatable measurement over the full dynamic range of daily irradiance received by the eye. This instrumented eyewear is designed for use in all studies requiring rigorous assessment of the lighting environment.

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