Light & Engineering 33 (5) 2025
Volume 33
Date of publication 10/20/2025
Pages 41–48
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A Blue Ray Study on Home Lamps for Healthy Eye Sight and Sustainable Lighting Using Spectrometry Method L&E, Vol.33, No.5, 2025
Articles authors:
Hadi Manap, Mohd Shawal Jadin, Mohd Amir Shahlan bin Mohd Aspar, Mohd Ashraf Ahmad, Abdul Hadi Sulaiman
Hadi Manap, Ph. D. in Optical Sensors, University of Limerick (2011); B. Sc. in Mathematics and Physics, University of Malaya (1998); M. Sc, Process Plant Management, University of Technology Malaysia (2004). Associate Professor, Faculty of Electrical & Electronic Engineering Technology, University Malaysia Pahang Al Sultan Abdullah. His research interests are optical sensing, spectroscopy, photonics, instrumentation, fibre optics sensing
Mohd Shawal Jadin,
Ph. D., University Sains Malaysia (2018); B. Sc. (Hons) in Electrical and Electronic Engineering, University Sains Malaysia (2002); M. Sc., University Sains Malaysia (2006). Lecturer, Faculty of Electrical & Electronic Engineering, University Malaysia Pahang. Research interests: power electronics, renewable energy, thermography, image processing, condition monitoring
Mohd Amir Shahlan bin Mohd Aspar
Ph. D. in Engineering Technology (Pharmaceutical) (2021); B. Eng. in Biomedical Engineering, University Technology Malaysia (2012); M. Eng., University Malaya (2016). Lecturer, Faculty of Electrical & Electronics Engineering Technology, University Malaysia Pahang Al-Sultan Abdullah. Research interests: microbiology, biomedical engineering, biomechanics, applied electronics, biotechnology
Mohd Ashraf Ahmad,
Ph. D. in Informatics (Systems Science), Kyoto University (2015); B. Eng. in Electrical Mechatronics, University of Technology Malaysia (2006); M. Eng. in Mechatronics and Automatic Control, University of Technology Malaysia (2008). Associate Professor, Faculty of Electrical and Electronics Engineering Technology, University Malaysia Pahang. Associate Editor: International Journal of Electrical and Computer Engineering (2016–), Applications of Modelling and Simulation (2017–), Journal of Future Robot Life (2019–). Research interests: model-free control, mechatronic systems, nonlinear system identification, vibration control
Abdul Hadi Sulaiman,
Ph. D., University Putra Malaysia (2015); B. Eng., University Technology Malaysia (2007); M. Sc. in Photonic Devices, University Malaya (2009). Senior Lecturer, University Sains Malaysia (2024–). Previous positions: University Putra Malaysia (2012–2014), University Technology PETRONAS (2015), International Islamic University Malaysia (2016–2017), University Tenaga Nasional (2017–2023). Research interests: microwave photonic fibre lasers, distributed fibre optic sensors, random fibre lasers, semiconductor optical amplifiers
Abstract:
Blue ray is the visible light with a wavelength ranging from 415 nm to 490 nm. The short wavelength of blue light indicates that it contains high-energy visible light. This high-energy blue ray can penetrate the cornea of the eyes and has been scientifically proven to cause related eye diseases such as cataracts. Additionally, it can disrupt hormone levels by triggering the brain to release melatonin and affect hormone secretion, thereby impacting sleep quality. Consequently, there is a need for a study on blue light exposure. This paper reports a comparison of blue ray intensity among different types of lamps. The method employed to measure blue ray intensity involves using an averaging spectrometry method. The findings indicate that LED lamps have the highest blue ray intensity when compared to compact fluorescent lamps (CFLs) and incandescent lamps. The key contribution of this paper is to highlight to consumers that incandescent lamps are considered as the safest option, emitting the lowest amount of blue ray.
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Number of images - 9
Tables and charts - 3
