What color is the human eye more sensitive to with the same output power?
Lasers are everywhere in life. A laser tells a grocery store clerk the price of a loaf of bread. Lasers are used in stores to track inventory, hang photos directly at home, weld on car assembly lines, in operating rooms, in the military for laser-guided weapons, and in common electronic devices such as CD players. average. "Laser produces powerful focused electromagnetic beams that are used in many products, from music players and printers to eye surgery tools," the FDA said. "When used in hazardous conditions or without certain controls, the highly concentrated light from a laser...can be dangerous...not just to the person using the laser, but to everyone. In laser beams." Although high power laser pointer have been banned in many public places, such as stadiums, the government has not regulated the sale of lasers and has no laws restricting their use. Therefore, if the infrared beam escapes from the aperture, it can cause damage to the eyes. High quality IR filters prevent such leaks and make green laser pointers safe. The human eye is more sensitive to green lasers than red and blue lasers. In fact, a 532nm green laser is 7 to 10 times brighter than other beam colors at the same output power. The green pointer is great for signaling very distant objects, as one can easily track the entire laser beam.
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The popularity of red laser pointers is now replaced by green laser pointers, visible from greater distances. Even at very low power, green laser pointers and green laser pointers are more visible than red laser pointers. This is because a common green laser pointer emits a monochromatic beam of light at 532nm, which is very close to 550nm - the wavelength at which the human eye is most sensitive. In short, green lights are easier to see than red lights. Depending on the situation, different laser pointers will work better than others. When you need to point out constellations, buy a powerful laser pointer that can clearly point to places in the sky. Class II and Class IIIa green laser pointer are considered safe because the eye's reflex response time is about 0.25 seconds. At <5 mW, the energy density of the laser beam (W/cm2 or J/cm2) is not sufficient to cause biological damage and the eyes are protected. Once the 5mW limit is exceeded, the blink reflex no longer provides protection. Today, lasers, or rather devices that generate laser beams, have become very common and are available in large quantities on the market in all shapes and sizes. In fact, these devices are so cheap today that even elementary school students use them as toys.
2022-01-13 09:05:31
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