How powerful is the laser pointer?
Laser pointer, also known as high power laser pointer, is a portable laser emitting device made by designing, processing, and packaging semiconductor laser modules (laser diodes). When using a laser pointer, there must be such an experience: the farther the object is illuminated, the larger the spot area and the darker the color. It is not difficult to find that although the laser is highly collimated light, as the propagation distance increases and the air is scattered, it will gradually diverge and the brightness will gradually decrease.
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The laser pointer is a type of laser diode. It has red light, blue light, green light, purple light and other types of rays, suitable for reporting, teaching, tour guide, astronomy and other fields. The apparent brightness of the light spot irradiated by it depends not only on the power of the laser and the surface reflectance, but also on the color vision of the human eye. Improper use may cause injury, such as damage to the retina, skin injury, and damage to valuables. Children should be prevented touch.
2021-10-16 10:05:40
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