Researchers have designed and tested ‘human-centric’ LEDs that emit different wavelengths of blue light depending on whether it’s daytime or nighttime, reducing the disruptive effect artificial light ...

Unfortunately that reflected light is wasted, as it doesn't travel out into the diode's surroundings to provide illumination. Additionally, it raises the temperature inside the diode, causing the chip ...

To be more energy efficient, many people have replaced their incandescent lights with light-emitting diode (LED) bulbs. However, those currently on the market emit a lot of blue light, which has been ...