Device for Measuring Driving Suitability and Blue Light Protection in Sunglasses

Autores

DOI:

https://doi.org/10.29384/rbfm.2022.v16.19849001671

Palavras-chave:

óculos de sol, luz azul, normas, fatores Q, luzes semafóricas, ISO12312-1

Resumo

Sunglasses safety plays an important role for the wearer and most when choosing their sunglasses do not consider some important features. Among other relevant tests, sunglasses should have properties that do not negatively interfere with the user’s vision when driving land vehicles. Testing sunglasses for transmittance of total visible light and traffic lights are requirements of the sunglasses standard ISO12312-1. We have developed a prototype for users to self-check their sunglasses for traffic lights regarding the safety for driving. The prototype consists of an illumination source and a detection photosensor that yield four transmittance values weighted with different functions. Combining the values of the four outputs of the sensor, it is possible to provide luminous bands quite similar to the required from the standards regarding the visible spectrum and traffic light transmittances. The Q factors required on the standards evaluate the color distortion for the vision on sunglasses and are measurements provided by the prototype. The luminous transmittance and Q factors for 60 sunglasses lenses were measured in a gold standard and were used for evaluating our prototype. Bland-Altman analysis presented non-significant biases and narrow 95 % limits of agreement within pre-defined tolerances, for all measurements. The results show that the prototype is a worthwhile alternative for providing the public with access to their own sunglasses' information on driving suitability, as well as for industry and retailers for quick verification of their products. This work is potentially significant in educating the public about some features to consider before purchasing sunglasses and in providing the public with a means to self-test their sunglasses regarding their quality and driving safety. It is also a wake-up call for the sunglasses industry and retailers to be aware of the quality of sunglasses on the market with respect to the driving safety of users.

Downloads

Não há dados estatísticos.

Referências

Masili M, Duarte FO, White CC, Ventura L. Degradation of sunglasses filters after long-term irradiation within solar simulator. Engineering Failure Analysis. 2019;103:505-516. doi:10.1016/j.engfailanal.2019.04.038

Masili M, Ventura L. Equivalence between solar irradiance and solar simulators in aging tests of sunglasses. BioMedical Engineering OnLine. 2016;15(1). doi:10.1186/s12938-016-0209-7

Masili M, Schiabel H, Ventura L. Contribution to the Radiation Protection for Sunglasses Standards. Radiation Protection Dosimetry. 2014;164(3):435-443. doi:10.1093/rpd/ncu274

ABNT. Brazilian national standard. [Sunglasses and Sunglare Filters for General Use and Filters for Direct Observation of the Sun], ABNT NBR 15111:2013. Rio de Janeiro: Associação Brasileira de Normas Técnicas; 2013.

Magri R, Masili M, Duarte FO, Ventura L. Building a Resistance to Ignition Testing Device for Sunglasses and Analysing Data: a Continuing Study for Sunglasses Standards. BioMedical Engineering OnLine. 2017;16(1). doi:10.1186/s12938-017-0404-1

Loureiro AD, Gomes LM, Ventura L. Transmittance Variations Analysis in Sunglasses Lenses Post Sun Exposure. Journal of Physics: Conference Series. 2016;733:012028. doi:10.1088/1742-6596/733/1/012028

Mello MM, Ventura L. [Visible and Traffic Lights Transmittance Calculation with Alternative Weighting Function]. Revista Brasileira de Física Médica (Online). 2013;7:99-104.

Lincoln VAC, Ventura L, Sousa SJFE. Ultraviolet Analysis of Donated Corneas: a Portable Prototype. Applied Optics. 2010;49(26):4890. doi:10.1364/ao.49.004890

Mello MM, Lincoln VA, Ventura L. Self-service Kiosk for Testing Sunglasses. BioMedical Engineering OnLine. 2014;13(1):45. doi:10.1186/1475-925x-13-45

Dain SJ. Sunglasses and Sunglass Standards. Clinical and Experimental Optometry. 2003;86(2):77-90. doi:10.1111/j.1444-0938.2003.tb03066.x

Hovis JK. When Yellow Lights Look Red: Tinted Sunglasses on the Railroads. Optometry and Vision Science. 2011;88(2):327-333. doi:10.1097/opx.0b013e31820847f1

ISO. International standard. Personal Protective Equipment – Test Methods for Sunglasses and Related Eyewear, ISO 12311:2013. Geneva: International Organization for Standardization; 2013.

BSI Group. Specification for sun glare eye protectors for general use, BS2724:1987. 1987

Downloads

Publicado

2022-12-30

Como Citar

Loureiro, A., & Ventura, L. (2022). Device for Measuring Driving Suitability and Blue Light Protection in Sunglasses. Revista Brasileira De Física Médica, 16, 671. https://doi.org/10.29384/rbfm.2022.v16.19849001671

Edição

Seção

Artigo Original