Is the cheap laser pointer stable?
If it is a Laser pointer, that is, a pen type, usually 5-50mw. If it is a flashlight type, there are generally 50.100.150.200,300,400,500,700, or even 800,1000mw. As for the price, the price between 50-200mw is relatively ordinary, and the price difference is not very large. The price of power above 300mw is relatively expensive, mainly because of the high material cost, and the second is the relatively high technical requirements. Although there are many domestic companies engaged in laser products, there are still few factories for high-power green light. Can make a stable out. The laser pointer is generally around 100. Early laser pointers used an ammonia atmosphere (HeNe) gas laser with a wavelength of 633 nanometers (nm), which was usually used to generate a laser beam with an energy of no more than 1mW. The cheapest laser pointer uses a deep red laser diode with a wavelength of 670/60nm. The more expensive one uses a red-orange diode with a wavelength of 635nm, which is easier to recognize by the human eye. There are also laser pointers of other colors, the most common is green light with a wavelength of 532nm.
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The cheap laser pointers on the market indicate that the power level is not accurate. In fact, a 50mw laser flashlight focusing can easily ignite matches, which almost kills black-headed matches in seconds. Because the laser pointer is a high-energy-consuming electronic product, it will also generate a lot of heat during the lighting process. The order of heat generated by the same power laser is probably blue-violet>red light>green light. The ability of green light to burn things mainly depends on Infrared without filtering. Therefore, few lasers on the market with a price of less than 1,000 yuan have true pure green light, and they all have no infrared filter!Green light pen power points are 5MW 10MW 20MW 30MW 50MW 100MW 200MW power is more expensive laser brightness is stronger.
2021-09-17 12:44:43
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