Light comes from the electromagnetic spectrum, which is comprised of short and long wavelengths measured in nanometers as shown below.
Blue LED’s have revolutionized Residential and Commercial Lighting, Flat Panel Displays such as HDTV’s, Automotive Lighting and many other products. All of these products use blue LED with encapsulated phosphors that convert the blue light to white light. While the encapsulated LED approach works very well, there are side effects. These side effects include heat generation, which affects the quality of the light produced by the LED over time. Also, not all of this blue light is safe for your eyes. While some blue light is not harmful, scientific studies show that UV and Blue Light <420nm causes longterm damage to your eyes. There are both safe light spectra and harmful types of light, such as <420nm blue and UV light, glare or reflected light.