Place the laser light in a high-rise or mountain-top scenic area, the beam shoots into the distance, and a bright green light appears in the sky, which is very dazzling. The biggest advantage of laser headlights is the long exposure distance, but it is precisely because the illumination is too far, the laser headlights are usually not turned on when driving at low speeds, and domestic regulations even limit the distance to 475 meters. Laser headlights have all the advantages of LED headlights, and are smaller in size, which can leave more space for designers to design on the front face. Laser lights are often used in theaters, nightclubs, dance halls, outdoor advertising, landmarks, etc., and are also used in store advertising.
Lasers are different from ordinary light sources. Because of their high brightness, good directionality, and high energy density, the special nature of lasers poses a danger to safety. The safe use of Laser pointer requires that all laser users and all people near the laser system must have sufficient knowledge of laser safety. Due to the different laser wavelengths, the damage to human tissues and organs is also different. Therefore, the various types of lasers are divided into the following four levels according to their output power and the degree of harm to the human body. The laser light is brighter and has good parallelism. The damage to the human eye comes from these two points, and the most important thing is parallelism. Our eye is also a lens imaging system like a camera. Therefore, when parallel light enters the eye, as long as we are not looking at a close object at that time, the light beam will be concentrated to a point on the retina. In addition, the laser light is originally very bright, and if it converges again, it will burn the retina.