Adoption of Light-Emitting Diodes in Common Lighting Applications

Elliott, Clay; Lee, Kyung Hwa

doi:10.2172/1669047

Cited by 10 publications

(6 citation statements)

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“…Prior to the introduction of energy-efficient solid-state lighting (SSL), electricity used to power outdoor lighting accounted for about 1.5% of global power consumption [53][54][55]. In the United States alone, the U.S. Department of Energy estimates that 255 TWh of energy are expended annually for outdoor lighting (commercial, industrial, private, and municipal) [56] that equates to the emission of over 180M metric tons of CO 2 . Remote sensing of night lights is itself an invaluable tool for tracking energy consumption and efficiency as it relates to carbon emissions.…”

Section: Environmentmentioning

confidence: 99%

A Case for a New Satellite Mission for Remote Sensing of Night Lights

et al. 2021

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The physiology and behavior of most life at or near the Earth’s surface has evolved over billions of years to be attuned with our planet’s natural light–dark cycle of day and night. However, over a relatively short time span, humans have disrupted this natural cycle of illumination with the introduction and now widespread proliferation of artificial light at night (ALAN). Growing research in a broad range of fields, such as ecology, the environment, human health, public safety, economy, and society, increasingly shows that ALAN is taking a profound toll on our world. Much of our current understanding of light pollution comes from datasets generated by remote sensing, primarily from two missions, the Operational Linescan System (OLS) instrument of the now-declassified Defense Meteorological Satellite Program (DMSP) of the U.S. Department of Defense and its follow-on platform, the Day-Night Band (DNB) of the Visible Infrared Imaging Radiometer Suite (VIIRS) instrument on board the Suomi National Polar-Orbiting Partnership satellite. Although they have both proved invaluable for ALAN research, sensing of nighttime lights was not the primary design objective for either the DMSP-OLS or VIIRS-DNB instruments; thus, they have some critical limitations. Being broadband sensors, both the DMSP-OLS and VIIRS-DNB instruments suffer from a lack of spectral information. Additionally, their spatial resolutions are too low for many ALAN research applications, though the VIIRS-DNB instrument is much improved over the DMSP-OLS in this regard, as well as in terms of dynamic range and quantization. Further, the very late local time of VIIRS-DNB observations potentially misses the true picture of ALAN. We reviewed both current literature and guiding advice from ALAN experts, aggregated from a diverse range of disciplines and Science Goals, to derive recommendations for a mission to expand knowledge of ALAN in areas that are not adequately addressed with currently existing orbital missions. We propose a stand-alone mission focused on understanding light pollution and its effects on our planet. Here we review the science cases and the subsequent mission recommendations for NITESat (Nighttime Imaging of Terrestrial Environments Satellite), a dedicated ALAN observing mission.

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Section: Environmentmentioning

confidence: 99%

A Case for a New Satellite Mission for Remote Sensing of Night Lights

et al. 2021

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“…Since the quality of LED light varies widely and can have elevated rates of damage, the transition from incandescent lighting to LED lighting for museums is not prevalent. 60 Although LEDs are being widely accepted, the incandescent light source is still considered a benchmark for its colour-rendering quality, warm appearance and full spectrum nature. 4 The standard illuminant A, representing a typical tungsten filament lamp, is widely used as a reference in colourimetry (e.g.…”

Section: Methodsmentioning

confidence: 99%

Optimising augmented reality projector light output to balance art conservation, colour quality and energy consumption

Kore,

Brown,

Durmus

2024

Lighting Research & Technology

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Light absorbed by sensitive artwork may cause irreversible damage. Optimising the spectral power distribution of light sources to minimise absorbed light can reduce damage while maintaining the colour appearance of the artwork. Previous absorption-minimisation studies used optimisation methods without comparing their performance. Here, three-channel LED-augmented reality projector spectra were optimised for 24 colour samples using a brute-force (BF) and multi-objective genetic algorithm (MOGA). The BF search and MOGA performed similarly in achieving optimal results, reducing both light absorption and energy consumption by almost half. However, MOGA was 2.5 times faster than BF in finding optimal solutions. The results indicate that an LED RGB projector can be used to illuminate museum artefacts to reduce light absorption and energy consumption, with the caveat of perceptible colour shifts in some of the colour samples. Future research will investigate observers’ subjective evaluations of artwork under optimised lighting.

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“…Emerging technology such as Light Fidelity (Li-Fi) that transmits data through LEDs is also driving the LED market due to its better speed, security, and efficiency compared to Wi-Fi (TechSci Research, 2022). In the United States, installations of LED products have been increasing, roughly doubling from ~1.1 billion to ~2.3 billion units from 2016 to 2018, accounting for 30% of the U.S. lighting market share (Elliott & Lee, 2020). In 2020, 47% of residential energy consumption survey respondents reported usage of LEDs for most or all of their indoor lighting (EIA, 2022b).…”

Section: Led Lightingmentioning

confidence: 99%

2023 Critical Materials Strategy

Bauer,

Khazdozian,

Mehta

et al. 2023

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For more than a decade, the U.S. Department of Energy (DOE) has funded basic and applied research and development (R&D) related to critical materials to address the scientific and technological (S&T) challenges that underpin supply chain vulnerabilities. These investments were made possible through the first DOE Critical Materials Strategy in 2010. This included the first DOE Critical Materials Assessment -identifying which materials were critical for clean energy technologies. It also defined the pillars that form the foundation of the DOE research strategy that guided these investments.

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Adoption of Light-Emitting Diodes in Common Lighting Applications

Cited by 10 publications

References 0 publications

A Case for a New Satellite Mission for Remote Sensing of Night Lights

A Case for a New Satellite Mission for Remote Sensing of Night Lights

Optimising augmented reality projector light output to balance art conservation, colour quality and energy consumption

2023 Critical Materials Strategy

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