Led banner effect1/9/2024 ![]() Avoid LED lights above 3000K and/or labeled "bright white," "neutral white," "cool white," or "daylight white" as these lights will generally have a crisp, stark white color. These bulbs are usually labelled "warm white" but confirming the exact color temperature can be preferable. Choose a bulb with a color temperature of 2700K or lower, preferably 2400K.You may want to consider the following factors: Red energy (long wavelength) is plentiful in light given off by candles and flames - types of "light" that our bodies are already accustomed to being exposed to at night, and does not impact circadian rhythms. In general, you will want to look for bulbs that provide more red energy, and less blue energy, in their respective light spectra. When it comes to choosing the right type of LED bulb for use during evening hours, you may want to look for a light bulb designed for circadian health in mind. The first three factors above are quite self explanatory and these are straightforward steps you can take to reduce your exposure to blue light. The type of LED light you use - color temperature, CRI and the light spectrum can all affect the relative amount of blue light in a light's spectrum.The specific time of night you use the LED lights - exposure during early evening hours will have a much lower risk than exposure late at night just before going to bed.The length of time you are exposed to the LED light - the longer you are exposed to the blue light, the more significant the melanopsin production.The LED light intensity - placing a light bulb close to your face will expose you to a lot more blue light than sitting farther away from it.So is the blue light in LED light bulbs a health concern? Yes, but a variety of factors will affect the severity of the risk: LED lights and our devices do contain a significant amount of blue light (but with important caveats and qualifications - see below), and the concern is that excessive use during evening hours will cause our bodies to continue the production of melanopsin, making it harder to fall asleep naturally.ĭuring evening hours, our bodies' natural expectation is for blue light exposure to be diminishing, but by continuing to use LED devices rich in blue light, we are altering the natural biological clock in our bodies. ![]() Light energy in this wavelength band promotes alertness. ![]() In this article, we discuss the health impacts of the light emitted from LED lights - in particular, "blue light" as it relates to the LED spectrum, as well as the effect of flicker that is prevalent in LED lights.įigure 1: Graph showing the sensitivity curve for melanopsin response. There exists very little, however, in the way of understanding or regulations for the quality and safety of the light emitted from LED bulbs. Most governmental authorities have continued to adapt existing building and safety codes to prevent fire and electric shock risks - and of course, it is always a smart idea to always practice basic electrical safety. LEDs are of course energy efficient, last many times longer and are therefore preferable from an environmental standpoint, not much is mentioned with respect to the human and consumer side of things - especially when it comes to the safety and health effects of the emitted light itself.Įlectrical and toxicity concerns of LEDs are generally in line or superior when compared to incandescent and fluorescent lamps. LED lights are rapidly becoming the standard lighting technology in many applications, and in many areas have become the only option as incandescent and CFL lighting options become phased out.
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