In the cold winter, the camera was blurred by fog. How to eliminate the fog on the lens in winter?

Every winter, the "glasses people" are scrambling to worry that after entering the warm room from the cold outdoor, a large white fog will immediately appear on the lens, blocking the line of sight. Recently, a Weibo that "soapy water can prevent lenses from fogging" has been widely circulated on the Internet. Is this statement really feasible?

It was found in the survey that the fogging problem of glasses lenses in winter troubled many people. "I think winter is very depressing. As soon as I entered the classroom, my glasses were foggy and I could only take them off and wipe them immediately. " Shi Yue, who is studying in high school, told reporters: "On one occasion, on my way from the door of the classroom to my seat, I almost bumped into my classmate's desk because of the fog on the camera.

Recently, the weather is cold. I wear a mask when I go to school every morning. When exhaling, the camera will fog, which will seriously affect the line of sight, but I can't stand the cold wind blowing on my face without wearing a mask. "When the reporter asked Shi Yue if he knew a recently popular Weibo about lens anti-fog, Shi Yue said that he had heard of it from his classmates, but he had never tried it, and he didn't know how it worked.

Experiment: Apply soapy water to see the effect. Subsequently, the reporter conducted verification according to the method described in Weibo. The reporter first prepared two pairs of glasses with resin lenses, a piece of soap, a piece of glasses cloth and a cup of hot water. First, apply soapy water to a pair of glasses lenses. After the lens is dry, wipe the lens with glasses cloth.

Then, put two pairs of glasses above the cup filled with hot water in advance. The results show that there is only a thin layer of fog on the glasses lens coated with soapy water, which will not affect the line of sight, while a layer of white fog is obviously formed on the lens without soapy water, which seriously blocks the line of sight.

Although soapy water can effectively prevent lenses from fogging, this method can only be used as a temporary anti-fogging method occasionally, and the public is advised not to use this method for a long time. "Because we all know that glasses close to human eyes need to be cleaned frequently to maintain hygiene, if this method is used for a long time, then after cleaning the lenses, the lenses should be smeared with soapy water again.

Long-term use of soapy water with high alkalinity to clean lenses will destroy the surface layer of resin lenses and cause lens damage. Chen Chao recommended that professional anti-fog glasses or anti-fog glasses cloth is a good choice for "glasses family" to prevent fog in winter.