Common sense of laser pointer intensity
According to the toy laser pointer on the market, the intensity is about 5mW. If you want to kill a person with this Laser pointer. High-intensity laser pointers can cause electro-optical keratitis. It is recommended to avoid using it as much as possible. If you need to use it, take protective measures. It is understood that the controllable variable of the laser pointer itself is not only the wavelength, but also the width and intensity of the laser beam, which will all have a certain influence on the interference result of image recognition. Speaking of laser pointers, post-00s may not involve much, but post-90s and post-95s. The light emitted by the laser pointer has the characteristics of long distance and high intensity.
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The intensity of the laser pointer directly irradiates the eyes, which will cause damage to the tissues in the eyeball. And this damage is likely to be permanent, or even blindness! The wavelength and power of the laser product determine the damage of the laser to different tissues of the human body. The wavelength determines the absorption characteristics of different human tissues and the mechanism of damage to the laser, and the power and energy determine the degree of laser damage. The International Electrotechnical Commission standard divides laser products into several major safety levels based on the wavelength, maximum output laser power or energy of laser products. They are like the business card of laser products, representing the degree of harm of laser products, and what users need to pay attention to. . After understanding the meaning of laser intensity, let's take a look again when we see a laser, how can we know its intensity? Some laser pointers are not harmful to people because of their inherent low intensity, but not all lasers are like this. There are many lasers classified as Class 1, which may use Class 3B or 4 laser sources. If we use them improperly, opening the protective casing of the machine or deliberately changing the light path may cause higher-level laser beam leakage, thereby causing Personal hazard.
2021-09-15 12:33:11
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