Do you know what a good laser pointer？
Laser pointer refers to a transmitter designed to be a hand-held visible laser. According to the wavelength, laser pointers can be divided into red light (650-660nm), green light (532nm), blue light (445-450nm) and blue-violet light (405nm). The choice of a good laser pointer has two main characteristics.When selecting, pay attention to the following points: carefully observe the light spot in a dark place. If there is obvious flooding around the laser spot, It means that the lens is unqualified; observe whether the light spot is a perfect solid circle; carefully observe whether there is a problem of flickering and dimming when the laser is emitted. If so, it means that there is a problem with the LD. If it is a good Laser pointer with low power (below 20 milliwatts), you need to observe whether the brightness of the laser will become darker and brighter when the laser is emitted. If this is the case, there is a problem with the circuit or LD of the laser pointer.
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1. High-safety good laser pointers must have relevant national certificates, and their grades and power consumption must comply with national standards. 2. The functions that can complete specific functions are mainly reflected in whether you need to connect to the USB interface, some do not need to be connected to the computer, emit laser, the function is relatively simple, some have advanced control and interface functions, and some have ultraviolet, lighting, etc. The additional functions and control distance are also a major factor in the purchase. The quality of LD (bulb), lens quality, laser crystal quality, and laser pointer power affect the quality of the laser beam.
2021-09-03 11:14:58
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