Comparative analysis of lighting, LED, sodium lamp spectrum!

Spectrum: After the polychromatic light is split by a dispersion system (such as a prism, grating), the dispersed monochromatic light is arranged in order according to the wavelength (or frequency). The full name is the optical spectrum. Today, I will bring you the spectral comparison chart of lighting spectrum, LED spectrum, and sodium lamp spectrum. Through the spectrum, we can more clearly understand the impact of various light on us. First observe the LED spectrum: we can clearly see from the LED spectrum that LED mainly emits blue light, so what effect does the blue light of LED have on people? The harm of blue light to the human eye is mainly manifested in the pathological hazards of myopia, cataracts and macular degeneration and human rhythm hazards: 1. Blue light harms the first damage structure: harmful blue light has extremely high energy and can penetrate the lens directly to the retina, causing The atrophy and even death of retinal pigment epithelial cells. The death of light-sensitive cells will cause vision loss or even complete loss, and this damage is irreversible. Blue light can also cause macular degeneration. The lens of the human eye will absorb part of the blue light and gradually become cloudy to form cataracts, and most of the blue light will penetrate the lens, especially children's lenses are clearer and cannot effectively resist the blue light, which is more likely to cause macular degeneration and cataracts. 2. The second harm of blue light. Asthenopia: Due to the short wavelength of blue light, the focus point does not fall on the center of the retina, but a bit farther from the retina. To see clearly, the eyeballs will be in a state of tension for a long time, causing visual fatigue. Long-term visual fatigue may lead to symptoms such as deepening of myopia, double vision, easy reading when reading, and inability to concentrate, which affects people’s learning and work efficiency. 3. The third harm of blue light. Poor sleep: Blue light can inhibit the secretion of melatonin, which is an important hormone that affects sleep. The currently known role is to promote sleep and regulate jet lag. This can also explain why playing a mobile phone or tablet before going to bed can cause poor sleep quality and even difficulty falling asleep. Next, we observe the spectrum of the sodium lamp: From the spectrum of the sodium lamp, I see that there is more yellow light, so what effect does yellow light have on people? Yellow light generally does not hurt the eyes, but yellow light makes people's eyes unclear about objects and easily causes visual fatigue. Yellow light will affect the mental state, make people more distracted, and affect work efficiency. This is the reason why warm light is not used for workshop lighting. Finally, observe the lighting spectrum: the lighting spectrum can be clearly seen, red, green and blue are relatively balanced, which is the light that has recently entered sunlight. Let's take a look at the comparison of the actual display effect under the lighting, LED, and sodium light. We find that the lighting is the most true light reflecting the nature of the object, it will not harm the eyes, nor does it have a negative effect on the human mental state!