1, laser light is generally divided into industrial laser light and entertainment laser light. The principle of laser light:
2, laser class YAG solid-state lasers, the use of krypton lamps and Nd: YAG crystal rods to produce a laser beam, through the frequency conversion, the formation of visible green light. The computer is used to control the vibrating mirror to occur high-speed deflection, so as to form beautiful text or graphics.
The use of laser light:
1, beam viewing: laser light atlas will be placed in the laser light in the high-rise or mountaintop scenery, etc., the beam is shot into the distance, the air appeared a beam of bright green light, very dazzling, this time the beam can be up and down, left and right, within a few kilometers of the radius can be appreciated within the scope of the magical and magnificent look.
2, patterns, animation viewing: laser light effect will be laser light emitted by the laser beam to the water curtain, buildings or walls, etc., the laser in the scanning system under the control of the rapid movement, and then the formation of text, patterns, etc. for viewing.
3, indoor viewing: laser lights are mostly installed in theaters, nightclubs, cabarets. Can cast a certain amount of dry ice smoke, the laser beam to the smoke and scanning, can also form text, patterns, animation effects. Can also be played with the music of the intense laser show, the bright colors are intoxicated to stay!
4, laser lights are commonly used in theaters, nightclubs, cabarets, outdoor advertising, landmarks, etc., and most recently also used in storefront advertising.
What are the hazards of laser lights:
1, laser lights have bright colors, high brightness, good directivity, long range, easy to control and other advantages, looks more magical dream feeling. Because of these characteristics, laser lights are used in buildings, parks, squares, theaters, etc., the use of laser beams of non-dispersive, so that you can attract the attention of people as far as a few kilometers away, because from the laser issued by the point has also become the focus of people's attention. However, although the laser light show looks good, but also must remember not to look at a long time, because a long time to look at the laser light, the damage to the eyes is great.
2, laser light brightness than larger, parallelism is good. The damage to the human eye is generated from these two points, the most critical or parallelism. Our eyes are also to the camera is a lens imaging system. So, when the parallel light incident to the eye, as long as we do not look at the time very close to the object, the light beam will be very concentrated convergence to a point on the retina. Plus, the laser light is already a very bright laser, and when it converges a bit, it burns the retina.
3, the laser lamp's live laser power meter only left a diameter of 3 mm or so of the hole, around noon went out to measure the power of the sunlight - the most sensitive gears have no response, that is to say, the sun's diameter of 3 millimeters, and even 0.1 milliwatts are less than. Lasers, on the other hand, can easily be tens or hundreds of milliwatts.
4, laser light in the application of the stage when commonly used green laser, this green laser damage to the human eye is present, like stage lasers emitting low-power laser damage to the human eye has a cumulative, mostly irreversible, don't look at more. Even if the laser pointer power is not greater than 5 milliwatts.