Do you understand that laser technology can be recharged?
The average green laser pointer consumed by astronomers and the public has an impact output of less than 5 milliwatts; In the United States, these are known as type 3A lasers. Low-wattage lasers, similar to those found in CD enthusiasts and laser printers, are type 1 or 2, preferably better wattage units, corresponding to those found in medical or industrial equipment, and are type 3b or 4. The larger the category, the larger the EXTREME warning labels required by the FOOD and Drug Administration. Powerful lasers can cause permanent eye damage and even blindness if used carelessly. All it takes is one mistake for the beam or its reflection to enter someone's eye. These lasers should not be directed at other people, no matter how far away they are. Laser Pointers are hand-held, pen-like, and battery-powered devices that project laser beams to highlight distant key locations or areas of interest on the screen during presentations. Common green laser pointer green emit red light, although more expensive Pointers that emit green or blue light also exist. Red laser designators are typically class 1, 2, or 3A lasers with beam power up to 5 milliwatts (mW). These grades provide the user with an indication of the degree of laser hazard. The higher the grade, the more powerful the laser, and the greater the potential for serious danger if not used properly. More powerful categories of laser designators exist - these are Class 3B and Class 4 laser designators (see the FAQ below for more information). Laser beams from these Pointers can reach hundreds of milliwatts (mW), and they are extremely dangerous. Importing, owning and using such lasers requires licenses that can cost several times the cost of laser Pointers.
Tags
Material
Do not buy a high powered laser pointer with an output of more than 5 mW because the picture of the Type 3A label on the indicator is below; Sometimes the notation uses Roman numerals: type IIIa. Some green laser designators can produce up to 300 mW and they are very flawed Type 3B laser devices!! As the beam intensity increases from 5 mW, the damage increases proportionally. Even at very low power, as low as 5 mW, the laser can cause temporary flash blindness when directed directly at the eye. A brief flash of such a laser is unlikely to cause immediate permanent damage, as the eye blinks and moves to avoid the beam, but can lead to vision loss later in life. Therefore, it is not safe to use class 3B or Class 4 laser designators with power exceeding 5 mW.
2021-12-20 11:55:31
Your Answer: