What are the popular laser pointers?
The Green laser pointer is the most popular laser pointer in the world, because the green light is 6 times brighter than the red light, the beam is more obvious than the red light, and the price is much cheaper than the blue and yellow light. Laser pointer users generally choose the green light pen. The green laser pointer is often used in teaching. It is a modern teaching mold and equipment. The teaching laser pointer is the third-generation writable laser pointer. Teachers, trainers, and lecturers all touch when they make teaching demonstrations and project demonstrations. To this kind of embarrassment, it is necessary to explain while operating the computer, and the movement is restricted, which is very inconvenient. Green light pen is the abbreviation of "green laser pen", and can also be called "green laser pen", "green laser pen", "pointing star pen", "green laser pen" and so on. The green light pen is the most popular laser pointer in the world, because the green light is 6 times brighter than the red light, the beam is more obvious than the red light, and the price is much cheaper than the blue and yellow light. Laser pointer users generally choose the green light pen. How to completely liberate users during teaching and demonstration, and truly realize "where to go, where to talk, where to talk, and where to point". The emergence of laser pointers really solved these problems and freed the speakers completely.
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For astronomy enthusiasts, how much power and price should be chosen to meet the requirements of pointing stars? I personally think that the power of 20mW to 50mW is more appropriate, and the power of 50mW or more can already feel particularly dazzling under dim indoor conditions. The price of a laser pointer is mainly related to its bandwidth and stability. The narrower the bandwidth, the more expensive it is, but the human eye can’t tell the difference in bandwidth at all. Therefore, friends who are more economically struggling choose the power below 50mW, and the price is A laser pointer below 100 yuan is more suitable. In addition, the power consumption of the laser pointer is generally relatively large, in line with the principle of environmental protection and saving, it is also necessary to have a good pair of rechargeable batteries. The price of 50mW power is not very expensive, only a little over 100.
2021-09-03 11:13:27
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