The side of the laser pen is provided with a switch button, and the tail of the laser pen is provided with a laser emitting head. The pen has the function of testing the ultraviolet intensity of the Laser pointer and has the function of the intensity of the laser pen. The high-intensity laser pointer can burn the skin, penetrate the balloon instantly, and leave marks on leather and plastic. The purchase of this kind of equipment is difficult, some businesses and parents are not clear about the technical specifications, and children are prone to safety hazards without professional guidance. As for the relationship between the power of a pulsed laser and the pulse frequency (pulse repetition rate), the power is defined as energy divided by time. The pulse power of a single pulse is called the peak power. This is generally very large and the order of magnitude is in the Kw level. The peak power is multiplied by the pulse. The width (usually in the order of nanoseconds) is the energy of a single pulse. This energy multiplied by the pulse repetition rate (the number of pulses per second, usually in the order of KHz) is the output power of the pulsed laser.
There are international classifications for the intensity of laser pointers. The classification of hazard levels of laser ranging products is a defining index that describes the degree of harm caused by the laser system to the human body. There are unified classifications and unified safety warning signs for lasers in the world, and lasers are divided into four Class (Class1～Class4), Class 1 lasers are safe for humans, Class 2 lasers have minor harm to humans, and Class 3 lasers above have serious harm to humans. Special care should be taken when using them to avoid direct exposure to human eyes. The laser is a high-intensity light source radiation device. A high-power laser can be used to cut and weld metal materials. Therefore, the laser can cause serious damage to the human body, especially the human eye, so you need to be careful when using it. Class I laser products have no biological hazards. Any beam that may be viewed is shielded, and the laser system is interlocked during laser exposure.