Simple red laser pointer
The main body of the shell of the green laser is SPCC, which is low in cost, but the disadvantage is also obvious: the shell is heavier, about 60 kg per square meter. In stage applications, the outer shells of all laser pointer battery boxes are made of aluminum, which is not only light and thin, but also has better thermal conductivity. To understand this, we must use the infographic (below the text) to carefully study the principles of semiconductor lasers. Every extreme laser pointer needs a power source, mainly simple batteries or rechargeable batteries, some of which can also be charged via USB. The core of the laser is a semiconductor diode, which produces photons, that is, light. Their application of the green laser pointer took a step forward in the demonstration. These are also widely used in outdoor activities, especially those activities carried out at night. Mountain climbing, camping and hunting or sports activities at night require some kind of sign. When two people are far apart, one person may need to point each other from one place to another, so that one person knows where the other person is in the dark. For this reason, many outdoor athletes also carry laser beams. If you get lost in the mountains or in the jungle, these also have the SOS function.
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Always pay attention to reflective surfaces. Mirrors, polished metal, or glass will reflect the green high powered laser beam and may accidentally hit others in the eyes. Even this reflected beam can harm others. During the presentation, if you do not use the laser pointer to aim at the screen, please turn off the laser pointer. The trick of the laser is to collect this kind of light that is too weak, this kind of light cannot be perceived by the human eye, and emit it as a clearly distinguishable light. This is done with two mirrors, where photons are repeatedly reflected between them and clearly amplified, just like acoustic feedback (when the microphone is too close to the speaker). The color of the laser beam produced depends on the semiconductor material and is always red in the most cost-effective version of everyday hands. The green laser pointer requires a final assembly.
2021-12-31 10:00:16
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