What are the disadvantages of laser lights?

Laser lamp, I believe many people know it, brings us colorful colors, but also brings us some harm. What are the dangers of laser lights? Next, let's take a look at the harm of laser lights through the following introduction!

Laser lights are generally divided into industrial laser lights and entertainment laser lights. Laser lighting has the advantages of bright colors, high brightness, good directivity, long range and easy control, and looks more magical and dreamy. Used in buildings, parks, squares, theaters, etc. It can attract people's attention several kilometers away by using the non-divergence of the laser beam, because the laser emission point has also become the focus of attention. However, although the laser light show is beautiful, it must be remembered that you can't watch it for a long time, because watching the laser for a long time is very harmful to your eyes.

Laser is also light, but its brightness is relatively large and its parallelism is good. The harm to human eyes comes from these two points, and the most important thing is parallelism. Our eyes are also a lens imaging system like a camera. When parallel light enters the eyes, as long as we don't look at nearby objects at that time, the light beam will focus on a point on the retina. It turns out that the laser is very bright. If we gather it again, it will burn the retina.

The danger of laser lamp is to block the laser power meter with a piece of paper, leaving only a small hole with a diameter of about 3 mm. I went out to measure the power of sunlight around noon-the most sensitive gear didn't respond.

That is, when the diameter of sunlight is 3 mm, it is less than 0. 1 milliwatt. The laser is tens or hundreds of milliwatts. Harm of laser lamp The green laser lamp commonly used in stage lighting does harm to human eyes, such as the cumulative damage of low-power laser emitted by stage laser to human eyes.

Most of them are irreversible. Don't look. Even if the power of the laser pointer does not exceed 5 milliwatts, it will do the same harm to people. On the harm of laser lamp