Why not recommend buying cheap laser pointers?
A cheap Green laser pointer may not be able to filter out any unconverted infrared laser. If this invisible infrared laser shines into your eyes, you will not be able to see it, so you will not blink or move, causing permanent damage to your eyes. Infrared diode lasers are generally cheaper, which has led to the creation of dual-frequency infrared-pumped green, violet and blue diode laser pointers. Using infrared (IR) diode laser modules up to 1000 mW, the visible power of these laser pointers can be as high as 300 mW.
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The cheapest laser pointer is only 5 yuan, and some stationery stores can buy it everywhere, which gives this vision "killer" a lot of potential. The laser pointer writes in English in very small fonts: “Don’t shine your eyes directly”, which is basically “ignorable” for children. Not only will the danger not be relieved, it will even become a “challenge” and “provocation”. ". Laser pointers can’t be played. It’s not enough to just have a doctor’s "friendship reminder", nor can we wait for 315 to implement counterfeit restrictions on the "three no products". Not only must we make up for legal shortcomings, but we must also make it impossible to manufacture from the source. Sell.
2021-10-08 09:01:26
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