The laser pointer commonly used by amateur astronomers


The laser pointer commonly used by amateur astronomers is a green continuous wave laser emitting a central light with a wavelength of 532 nm.

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The FDA requires them to put warning or danger labels on them to indicate the type of equipment, and the label depends on the maximum output of the equipment. The FDA regulates devices because they can cause eye injuries. Most amateur laser pointers are Class II (output = 1mW) or Class IIIA (output = 5mW) devices. Even if the industry is required to label its products in accordance with the instructions, random tests have shown that some devices exceed their marked output. Therefore, the following research applies to the correct output level.

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