Glasses that can prevent blue light from irritating the eyes
Do you know the blue light is divided into two types: beneficial and harmful ?
Anti blue light glasses are glasses that can prevent blue light from irritating the eyes. Special anti blue light glasses can effectively isolate ultraviolet rays and radiation, and can filter blue light, making them suitable for use while watching computers, televisions, and mobile phones
What is the blue light means?
Blue light is a part of natural visible light, and both sunlight and electronic screens emit blue light. [1-2] Blue light is an important component of visible light, and there is no separate white light in nature. Blue light, when mixed with green and red light, appears as white light. Green and red light have lower energy and less irritation to the eyes, while blue light has shorter waves and higher energy, which can directly penetrate the lens and reach the macular area of the eye, leading to macular degeneration.
Blue light is divided into two types: beneficial and harmful.
Blue light with wavelengths between 415 and 455 nanometers is harmful blue light in short waves and requires special attention to protection. According to the principle of complementary color of light, blue and yellow are complementary colors.
Therefore, glasses with blue light protection function generally have slightly yellow lenses compared to regular lenses. The higher the blocking rate of harmful blue light, the darker the background color of anti blue light glasses.
https://www.jhoptical.cn/HMC-Blue-ar.html
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