Light enters the human eye with two visual channels, one is an imaging channel, the other is a non-imaging channel of the clock and time. In the imaging channel, the High brightness fiber lighting module may cause visual damage to the retina. In non-imaging channels, Blu LED fiber light source illuminant may have an effect on the circadian rhythm. The wavelength of a fiber LED light source is about 450nm, which is consistent with the circadian rhythm of the human body, which has a strong ability to secrete melatonin inhibitors. The decline of melatonin can make people excited and do not sleep. This will affect the immune mechanism

In order to obtain stable, reliable and simple white light, the most commonly used method is to use High brightness fiber lighting module of the LED chip to stimulate yellow phosphor powder. Blu LED fiber light source wavelength of 450 nm or so blue, blue light in the process is divided into two parts, part of the blue light stimulate phosphor wavelength of 570 nm or so yellow green, another part of the optical fiber LED light source out blue light transmission and stimulate phosphor to produce yellow green light mix to produce white light, the color temperature is the most common light source spectrum quality indicators. According to the proportion and composition of phosphor powder, white LED can provide a range of color temperature range of cold white, neutral and warm white between 2700 and 6500K.

  Due to the High brightness fiber lighting module has the characteristics of light emitting area is small, high brightness, and Blu LED fiber light source , shorter than other light wavelength, so more radiation energy, the possible radiation harm is larger than other colors of light. Blu-ray harm is refers to the light source in the 400 ~ 500 nm blue band of harm, if a fiber LED light source, the eyes look straight into the light for a long time after the may cause of retinal photochemical injury. The extent of the damage depends on the amount of blue light the human eye accumulates in the light.

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