Laser pointer also known as infrared or finger star pointer

Laser pointer are highly directional. Light energy is highly concentrated in the space in the direction of emission, so the brightness of laser is ten million times or even billion times higher than that of ordinary light. Moreover, because the laser can be controlled, the light energy is not only highly concentrated in space, but also highly concentrated in time, so it can produce a huge light heat in an instant and become an indestructible and powerful light beam.

Normally, the lights we see are glowing in all directions, just like after a movie theater breaks up, everyone walks out in all directions at different paces. When you turn on the lights in a room, the whole room is illuminated. Another example, turn on the flashlight, in the emitted part, the diameter is only 3 to 5 cm, to be shot a few meters away, it will expand into a large circle of light. This shows that the light is dispersed in the propagation.

Weak green laser pointer mainly uses thermal and photobiological effects to penetrate subcutaneous tissues, make blood vessels dilate, promote metabolism, effectively improve microcirculation, enhance immunity as well as play a role in anti-inflammatory and pain relief, and promote wound healing. Irradiation of human tissue with weak laser can achieve the effect of physical therapy irradiation treatment or light acupuncture treatment, and light therapy in traditional physical therapy than, the efficacy of laser significantly improved, and a wider range of indications.

laser engraver cutting: automotive industry, computer, electrical housing, wood knife mold industry, various metal parts and special materials cutting, circular saw blade, acrylic, spring gasket, 2mm below the electronic machine with copper plate, some metal mesh plate, steel pipe, tin-plated iron plate, lead-plated steel plate, phosphor bronze, bakelite plate, thin aluminum alloy, quartz glass, silicone rubber, 1mm below the alumina ceramic sheet, aerospace industry use of Titanium alloy, etc. The lasers used are YAG lasers and CO2 lasers.

The laser pointer, also known as infrared pointer, was first widely used in the teaching process or by astronomy enthusiasts to point stars when observing the night sky. Later, because of its advantage of long-distance formation of light spots, and is widely used in museums, mountain expeditions, and later thought that the habits of cats are widely used in cat toys.