Eye-opening 500mw blue laser pointer
At the same intensity, green will be the brightest laser beam color, and 500mw blue laser pointer is the lowest starting point for outdoor use. Keep in mind that the higher the mW power, the better, and the farther away you need to use the laser at greater intensity, the greater the intensity required for daytime use. The FOOD and Drug Administration's Center for Devices and Radiological Health (FDA) is responsible for lightweight products, including lasers. FDA regulates devices and their classification and labeling. Level 2 is "safer" than Level 3. Many laser designators are in the range of 1 to 5 milliwatts (mW), a subclass of 3 called 3A. Careful reading of exposure limits indicates that 5 mW lasers may cause eye damage.
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Wavelength
The common 500mw blue laser pointer designator is a diode laser, which is really just a special type of transistor or diode. Due to the unique properties of the laser, it is magnified 100,000 times as it passes through the eye. Light passes through the back of the eye, the retina, where we perceive vision. The eye can actually see a small part of the electromagnetic spectrum, from short cosmic ray energies to long radio waves. We only see purple to red. Infrared (IR) and ultraviolet (UV) rays are invisible to us. The eye is most sensitive to yellow-green light (550 nm). At the same power, the brightness of red light at 670 nm is only 3%.
2021-12-03 10:26:34
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