Refraction and visual fatigue syndrome on watching the ULTRA HD 4k television curved screen system

Damasceno, Nadyr A; Damasceno, Eduardo de França

doi:10.5935/0034-7280.20160062

Cited by 2 publications

(1 citation statement)

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“…In general, based on the audiences, movement of people, and the money that these generate, football competitions are leading the sports broadcast updating process and its adaptation to the new format and emission requirements of ultra-high definition or 4K [9]. The lighting levels needed to obtain a video image that is as clear and realistic as possible in this format have caused the enclosures' lighting values to rise greatly from the previous conventional or high-definition (HD) (1080 p) formats [10,11].…”

Section: Introductionmentioning

confidence: 99%

LED Lighting Installations in Professional Stadiums: Energy Efficiency, Visual Comfort, and Requirements of 4K TV Broadcast

2020

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Nowadays, LED lighting technology reaches a higher Value of Energy Efficiency in Installations (VEEI) (W/m2*100 lux) than current luminaire lighting due to the number of lumens per watt that these are able to generate, as well as the directional nature of their emissions together with the adjustment capability through concentrator lenses with beam graduations that reach 5º. This achieves energy savings of up to 80%. Furthermore, also considering the substantial decrease in flickers, and that it noticeably improves usage of ultra-slow-motion cameras and the fading of switching-on or rearm times upon failure, LED technology stands out as the main solution for illumination of professional sports facilities. This article describes the evolution of regulatory requirements that are being imposed by the governing institutions of sports (FIFA, UEFA, FIBA, etc.) and professional leagues (LaLiga, Euroliga, etc.) in order to guarantee their competence as high-quality television products. In addition, the trends in requirements and specifications regarding lighting equipment and its installation, which are intended to convert stadiums into optimized centers for the celebration and dissemination of mass events, are analyzed (settings, photometry, etc.), particularly those concerning horizontal, vertical, and camera illuminance, average and extreme uniformities, glare, reduction of intrusive light in bleachers, flickers, color rendering index (CRI), correlated color temperature (CCT), and start-up times.

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Section: Introductionmentioning

confidence: 99%

LED Lighting Installations in Professional Stadiums: Energy Efficiency, Visual Comfort, and Requirements of 4K TV Broadcast

2020

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The age features of visual fatigue in employees of modern offices working with led visual displays and prevention measures

Nazarenko¹,

Cherednichenko²,

Sokurenko³

et al. 2021

Ukr. ž. probl. med. pr.

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Refraction and visual fatigue syndrome on watching the ULTRA HD 4k television curved screen system

Abstract: Purpose: To evaluate eye sensitivity disorder (similar to glare), with symptoms of visual fatigue, through watching television ULTRA HD-3D-55-inch

Cited by 2 publications

References 10 publications

LED Lighting Installations in Professional Stadiums: Energy Efficiency, Visual Comfort, and Requirements of 4K TV Broadcast

LED Lighting Installations in Professional Stadiums: Energy Efficiency, Visual Comfort, and Requirements of 4K TV Broadcast

The age features of visual fatigue in employees of modern offices working with led visual displays and prevention measures

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