Have you used a laser pointer app?
Lasers (laser pointers) are divided into five main families according to the properties of the excitation medium, solid-state lasers, gas lasers, semiconductor lasers, liquid lasers and free electron lasers. The recommended output of the laser pointer is usually in milliwatts. In the United States, lasers are classified by the American National Standards Institute and the U.S. Food and Drug Administration (FDA). Visible light power is less than 1 mW (wavelength 400-700 nm) second class (class 2 or class II) laser pointer crow. The power of Class 3A (Class3A or IIIa) is 1-5mW. Laser Laser Class 3B (Class 3B / IIIb) (output 5 to 500 mW) and Class 4 (Class 4 / IV) (output 500 mW and above).
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Lasers (laser pointers) are divided into five main families according to the properties of the excitation medium, solid-state lasers, gas lasers, semiconductor lasers, liquid lasers and free electron lasers. The recommended output of the laser pointer is usually in milliwatts. In the United States, lasers are classified by the American National Standards Institute and the U.S. Food and Drug Administration (FDA). Visible light power is less than 1 mW (wavelength 400-700 nm) second class (class 2 or class II) laser pointer crow. The power of Class 3A (Class3A or IIIa) is 1-5mW. Laser Laser Class 3B (Class 3B / IIIb) (output 5 to 500 mW) and Class 4 (Class 4 / IV) (output 500 mW and above).
2021-11-12 10:56:45
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