Buy a good and cheap laser pointer
If you have a very good and cheap laser pointer, you must use this device very responsibly. Therefore, you need to avoid direct contact with the eyes of others (children and adults). Otherwise, the retina may be seriously damaged (unable to be recovered by laser intensity), Digital laser: create a light spot on the computer screen through software, which can be moved with rotating fingers. It is regarded as the gesture of the user through the gyroscope, and then forms a point. When executing the support program for display, The laser spot will be displayed on the main display Its owner can also make changes in the headlights and magnifiers. The color and size of the laser can be adjusted as needed. On the LCD screen and LED screen. Note: the digital laser can not only be used to clearly display the LCD screen, But also clearly display the screen and wall. If you are used to using physical lasers, you can consider buying good and cheap Laser pointer.
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The use of red laser pen is relatively small, while green laser is used in distance. Due to the different principle of light, Green requires high machining accuracy. In addition, people are very sensitive to green, which makes the visual effect better than the red laser pencil, The distance is almost ten times that of red, And lead to higher green prices. Counterfeit products are characterized by low stability. Over time, these problems may occur: the remote control becomes shorter, The key does not work, the receiver is damaged, the laser pen does not light up, etc. If you buy it, you have to pay for class. You'd better buy a big brand in the store. The after-sales service is also good.
2021-09-03 11:13:51
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