What is TLA (Temporal Light Artifacts) ?

What is TLA (Temporal Light Artifacts) ?

An undesired change in visual perception induced by a light stimulus whose luminance or spectral distribution fluctuates with time, for an observer in a certain environment.

NameDefinition(CIE)Frequency RangeEnvironmentObserver (Human)IllustrationMetrics
FlickerPerception of visual unsteadiness induced by a light stimulus whose luminance or spectral distribution fluctuates with time, for a static observer in a static environment.~0 - 80HzStaticStaticFlicker
No motion (see it when nothing is moving)
1. Percent Flicker
2. Flicker Index
Stroboscopic EffectChange in motion perception induced by a light stimulus whose luminance or spectral distribution fluctuates with time, for a static observer in a nonstatic environment.~80Hz - 2kHzDynamiStaticStroboscopic Effect
Object motion (see it when object is moving and you are not)
SVM
Phantom Array EffectPerception of a spatially extended series of light spots when making a saccade (image transition across the retina) across a light source that fluctuates with time.~80Hz - 2kHzStaticDynamiPhantom Array Effect
Eye motion (see it when your eye is moving and object is not)
X

Reference:
https://www.designlights.org/news-events/events/stakeholder-meeting-2016/presentation-downloads/temporal-light-artifacts-flicker-and-stroboscopic-effect/

http://www.yidianzixun.com/article/0EmpHcjR

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An undesired change in visual perception induced by a light stimulus whose luminance or spectral distribution fluctuates with time, for an observer in a certain environment. Read More

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