Hand-held laser pointers are small in size, generally semiconductor lasers or "diode pumped solid state lasers" (DPSS). It only needs laser diode, crystal, and power supply (usually battery) to operate, which is very convenient. The handheld laser pointer processor generates a control signal according to the received pressure signal, and controls the laser emission source to turn on or off. The handheld laser emitting device of the present invention is equipped with a pressure sensor to sense the holding pressure of the human hand, and then determine whether the device is picked up, and automatically control its laser emitting source to turn on when it is detected that the device is picked up, and emit the laser to satisfy User needs. When the handheld laser pointer is put down, the laser emission source is automatically turned off because the holding pressure disappears, effectively avoiding energy waste.
With the rise of projection technology, handheld Laser pointer have entered people's daily lives more and more deeply, especially in public places such as teaching, conferences, and speeches. Most of the current handheld laser pointers are designed to be passively controlled, that is, a mechanical switch button is set on the handheld laser emitting device, and the handheld laser emitting device is controlled to be turned on or off by pressing the button.