Is green laser pointer uses extensive?
People are not unfamiliar with lasers, ranging from children’s laser toys to large laser transmitters. Their strengths are different and their uses are quite different. There are a variety of laser products on the market, one of which is a laser pointer, and the most popular laser pointer is the green laser pointer. Not only because of its own color, but also because of its power, so it has been warmly welcomed in various fields. Install the laser pointer on the finder lens adjustment bracket and adjust the laser beam to be coaxial with the lens barrel, and the laser pointer can be conveniently used as a substitute for the finder lens. The laser pointer finder is very intuitive and convenient, and it can perfectly complete the task of finder and coarse adjustment of the polar axis. However, because of the potential danger of the high brightness of the laser, the disadvantage of green light for night vision of the human eye, and the low accuracy of pointing stars, laser pointer pointing stars are more often abandoned by veterans.
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The Green laser pointer has the characteristics of high coherence, high directionality and high brightness. Because the laser has good collimation characteristics and the human eye is very sensitive to green light, the green laser pointer is especially suitable for pointing stars. People can see the beautiful beam of light emitted by the green laser pointer directly towards the eye in a dark environment. Within reach. The width of the laser beam and the size of the divergence angle are related to the monochromaticity of the laser and the focal length and aperture of the collimating lens group. The better the monochromaticity of the laser (the smaller the spectral width), the better the collimation (that is, the size of the divergence angle) that can be achieved. Generally speaking, the spectral width of civil LD is much wider than other lasers, but it is enough for products such as laser pointers, and the human eye cannot distinguish it at all. The longer the focal length of the collimating lens of the laser pointer, the thicker the beam width; the larger the aperture of the collimating lens group, the better the collimation of the beam. The green laser pointer is often used to point stars in astronomy. The beam emitted by the green laser is a very beautiful green line, which is very suitable for observing the starry sky at night and can help you point out the position of the stars.
2021-09-09 11:29:13
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