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Laser pointers, due to the low cost and ubiquitous supply, are widespread all over the world. No matter in science fiction movies and comedies or classroom, conventions and meetings, they play important role. They are accessible by the general public, including children, who lacks security knowledge about how to use these high tech gadgets in a safe way. Laser pointer related incidents continue increase year by year. When we use these high tech gadgets, what hazards we face? The most concerned damage about the laser exposure is retinal damage. Fortunately, most laser pointers on the market today are generally safe for normal use and not likely to cause permanent retinal damage. For people who are directly exposed to laser lights, they possibly suffer from afterimage, flashblindness and glare. Flashblindness is temporary vision impairment, lasting only several minutes. Afterimage is the perception of spots in the field of vision – it lasts from minutes to several days. In the situation of Glare, a reduction or complete loss of visibility will happen, in the worst circumstance, serious distraction and outrage will be caused. Using laser pointers in a hostile way will get you punished or even lose your lives. According to CBC news, a19-year-old man from Ajax allegedly aimed a hand-held laser pointer at an aircraft and now he faced several charges. In the past reports from other media, police officers have mistaken treated laser light as a gun sight. Before you use laser pointers, use your common sense about your around environment. Specific laws, which ban people to use laser pointers to point at policemen, cars, airplanes and other objects, have been established in some states. Laser pointers might also cause data loss on quality optical devices or optical media like DVDs and Blue Ray discs. Comparing to professional media, home-burned CDRs and DVDRs are more vulnerable. Lasers from dishonest gadget suppliers are always made with substandard, forming a menace to our health even lives. So be careful when you choose your suppliers, especially when you buy from wholesale providers.
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Laser pointer danger, Laser pointer security, how to use laser, be alert with laser pointer use,
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