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Perception of LED lighting affected by age

A person’s age may influence how they view low-energy lighting and displays

18 Oct 2019 by Selina Powell

New research has highlighted that the amount of short-wavelength light a source emits combined with the viewer’s age may affect how it is perceived.

The study, which was published in Optics Express, presented participants with several nearly white light-emitting diodes (LEDs) with different emission spectra.

They were then asked to rank the perceived tints of the light according to a reference white light.

Research team leader, Dr Aurelien David, from LED start up Soraa, highlighted that there were large variations in how different viewers perceived the lights.

“Some thought a given source appeared very pink whereas others thought the same source appeared very green,” he said.

Analysis revealed that the differences were predominantly influenced by a study participant’s age.

Dr David explained that the perceived tint of the LED lights was affected by a viewer’s sensitivity in the violet range, which is strongly age dependent.

He added that modern colorimetry could be used in the design of LEDs to reduce discrepancies in viewer experience.

Image credit: Pixabay/Fotorech

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