what damage do we use laser lamps to cameras? Is it harmful to human body?
Nbsp; nbsp; nbsp; nbsp; nbsp; nbsp; nbsp; nbsp; nbsp; nbsp; nbsp; nbsp; nbsp; the answer is certainly, in all performances or projects we must proceed from the principle of people-oriented, safety first, and then consider the effect and visual impact, so Halloween laser judge whether a laser specialist, first in the performance process can Whether to take safety into account the first, and in actual projects and performances, many businessmen will completely ignore the safety problem, blindly pursuing the impact of visual, regardless of the personnel and equipment on the scene, with a sense of luck, eventually lead to disaster.
Nbsp; nbsp; nbsp; nbsp; nbsp; nbsp; nbsp; nbsp; nbsp; nbsp; nbsp; & nbsp; first of all, human injuries, according to the survey of the State Administration of Quality Supervision and Inspection, most of the laser injuries occurred in children, the main part of the injury is the eyes and skin, generally speaking, the human body can withstand laser power 0.4-1 mW, especially 0.4 mW in children's eyes. Watts of laser beams can have an impact, if high-power laser beams cause damage to the retina of the eye, seriously leading to permanent vision loss, direct exposure to the skin for a long time, can cause burns.
Nbsp; nbsp; nbsp; nbsp; nbsp; nbsp; nbsp; nbsp; nbsp; nbsp; Beijing University of technology laser engineering research institute assistant researcher Chen Hong has also pointed out that: laser in daily life the main danger of eye and skin damage. When 95% of the visible light enters the pupil, it passes through the cornea and lens, reaches the retina and is absorbed by the retina. A laser of 1 milliwatts will injure directly into the eye.
Nbsp; nbsp; nbsp; nbsp; nbsp; nbsp; nbsp; nbsp; nbsp; nbsp; nbsp; nbsp; nbsp; nbsp; to skin irradiation easy to form light damage: Beijing Ditan Hospital dermatology and venereal disease department director Lun Wenhui said that laser irradiation is a kind of light damage to the skin, which is also one of the reasons for human aging, if the power is large, long-term irradiation will burn the skin, and more serious Acute light injury is irreversible. Among many light injuries, ultraviolet radiation is the most serious, especially in children. Because of the delicate skin and relatively poor tolerance, adults can bear the laser irradiation of children may not be safe. Chen Hong pointed out that by contrast, laser damage to the skin is lighter than the eyes, it does not cause permanent damage like the eyes, in general can be cured.
Nbsp; nbsp; nbsp; nbsp; nbsp; nbsp; nbsp; nbsp; nbsp; of course, laser damage to the eyes, cameras and projectors are also instantaneous, permanent. Especially for the camera's photosensitive chip Ccd or CMOS, the damage of the LCD screen of the projector is devastating. One Spring Festival Gala was burned by more than 10 cameras on the spot due to the unreasonable use of laser lamp, which caused great losses.
Nbsp; nbsp; nbsp; nbsp; nbsp; nbsp; nbsp; nbsp; nbsp; therefore, laser damage is real, but the bright and pure beams of laser lamps are a beautiful scene on the stage, we should refuse to use them? Of course not, use or use, but in order to use safely, the most important thing is to choose a qualified team, a qualified laser effect design team, the first to consider the following basic points: < br /> >
Nbsp; nbsp; nbsp; nbsp; nbsp; nbsp; nbsp; nbsp; 1, the environmental size of the venue - indoor or outdoor, which is helpful to determine whether the power and position of the required laser lamp is safe and reasonable.
Nbsp; nbsp; nbsp; nbsp; nbsp; nbsp; nbsp; 2, the layout of the audience and the location of cameras in the event site, after locating the location of the camera, we need to set up a safe area for viewers and cameras, in which we will prohibit all laser beams from entering this area, or adjust the beam energy of the safe area to 0.4 mW. Next.
Nbsp; nbsp; nbsp; nbsp; nbsp; nbsp; nbsp; nbsp; 3, strengthen safety control - to ensure no mistake, we will add emergency switch in the console, at any time we can turn off the power of the laser lamp, to achieve a complete shutdown.
Nbsp; nbsp; nbsp; nbsp; nbsp; nbsp; nbsp; nbsp; 4. high-power laser lamps used in crowded places, such as festivals, celebrations, concerts and other places, need to ensure that no audience can touch the laser light; and ensure that no one in the reliable area of the laser beam can touch the laser beam emitted by the laser light.
Nbsp; nbsp; nbsp; nbsp; nbsp; nbsp; nbsp; nbsp; 5. Assess and check the presence of flammable and explosive substances in the site, and use laser lamps far away from flammable and explosive gases or liquids.
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