An application or system setting on Android devices that reduces the amount of blue light emitted by the screen. This functionality modifies the color temperature of the display, shifting it towards warmer hues such as red and orange. A practical example is using such a filter during nighttime to potentially mitigate disruption to sleep cycles.
The significance of this feature stems from the established link between blue light exposure and suppressed melatonin production. Melatonin is a hormone regulating sleep. By minimizing blue light, these applications aim to promote better sleep quality and reduce eye strain. The development of this technology can be traced back to research on the effects of screen exposure on circadian rhythms.