As a green indicator. This also refers to star pens, laser pens, laser pens, green pens and hand-held lasers. It is named because it has a very intuitive and strong visible light beam, which is often used for indication. Because of its bright beam and strong anti-stray light interference, it is increasingly used in teaching/astronomical pointing and fixed-point guidance.

It is the first choice for laser lovers/astronomy lovers and outdoor lovers. It can also be used as a high-grade gift for relatives and friends. Green laser is an optical amplification produced by stimulated radiation, and it is a high-quality light source. Generally, the laser with the laser wavelength between 532 nm and 556 nm is called green laser.

Extended data

People's eyes are more sensitive to green (green appears brighter than other colors) Military experts use this feature to create a green laser, which can make people dizzy, and long-term exposure will lead to temporary blindness lasting for several hours.

The North Korean army used lasers to disorientate two American Apache helicopters and blind the pilots. It is believed that this is the first example of a war in which non-lethal weapons were used against the US military. Since then, American pilots have begun to wear protective masks.

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