Laser originated in the 1960s, but the principle of retroactive can be as early as 1916, which was found by the famous physicist Albert Einstein. It is come from the first letter of “Light Amplification By Stimulated Emission Of Radiation”.
In just a few decades of development, the application of the laser had throughout all industries and fields, including laser marking, laser rangefinder, laser radar, laser cutting, laser vision correction, laser beauty, etc.,
Laser has the following characteristics: high directional light, brightness, and great energy. Because of these characteristics, laser bring us convenience, but laser safety protection work should not be underestimated.