Why are most sunglasses black in color?
In the previous article, we discussed “What colour of sunglasses are best for girls?”. In this article, let’s talk about “Why are most sunglasses black in color?”.
Whether wearing black sunglasses to prevent sun or make the person look cool, black sunglasses have always been very popular with everyone. Black sunglasses are not only a favorite decoration for hipsters but also a must-have for preventing strong light in summer. Let’s talk about black sunglasses.
The Original Origin Of Black Sunglasses
Why are sunglasses mostly black? Sunglasses can help us block the sun and protect us from ultraviolet radiation. In addition to protecting our eyes, they are now more used as decorations. It is said that sunglasses originated in the Ming Dynasty in China. In the Ming Dynasty in the 15th century, officials mostly wore round black glasses when making judgments. At that time, this was the predecessor of sunglasses. Officials wearing black glasses can prevent their expressions from leaking when judging the authenticity of the exhibits. However, the quality and appearance of the glasses at that time were very different from the current ones. They were made of coal-smoked quartz lenses. The current sunglasses were invented by the famous glasses company Ray-Ban. In 1923, when Lieutenant McCludi of the American flight team successfully crossed the North American continent, he was troubled by sunlight during the flight. So after he came back, he entrusted Ray-Ban Optics to help to solve this problem. It took six years to invent the first sunglasses in the world.
Advantages Of Black Sunglasses
Black sunglasses can block all visible light and do not reflect any color light. So you can feel that the surrounding environment is relatively dark. When the light is relatively strong, the pupil size of the eye needs to be adjusted to adjust the luminous flux. Wearing black sunglasses can reduce the stimulation of light, reduce eye fatigue, and reduce the damage of strong light. At the same time, black sunglasses are also an excellent accessory because of the coldness of the color black. Now, black sunglasses have become a tool for many young people to pretend to be cool.
Disadvantages Of Black Sunglasses
Black sunglasses make people’s eyes in a relatively dark environment, so the pupils of the eyes will be enlarged. Then, if you wear black sunglasses for a long time, the pupils of your eyes will also be enlarged for a long time. The result of this is decreased vision. Even if the eyesight was particularly good before, it will be affected. However, the development of this effect on vision is very slow so that many people will easily ignore it.
Black sunglasses can block most of the visible light from the outside. But some harmful light rays are more likely to enter the eyes and damage the eyes due to the enlargement of the pupils. Therefore, when choosing sunglasses, you must understand the functions of the sunglasses you are going to buy.
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