A large number of projectors are used in daily work. In the process of using the projector, a wireless laser pointer and a mouse are both necessary products. So far, the wireless laser pointer and the wireless mouse are basically separated, causing inconvenience to use. In addition, there are a few wireless green laser pointer and page turning buttons in the computer product input device market at present. Such a combination product is bulky and consumes The TV is large, and the page-turning pen cannot replace the function of the mouse. The purpose of the new model is to provide a multi-functional wireless laser pointer which can be set on the wireless laser pointer for the large size and high power consumption of the wireless laser pointer and the page turning button, and the function of the page turning pen cannot replace the mouse. A wireless mouse. A communication device that can selectively transmit control signals to a computer and transmit a narrow beam. A cordless communication device with operation buttons and ports is provided. The communication device can be used as a computer mouse, trackball device or touchpad device. The operation signal is generated by the signal generator in response to the activation of the operation button or the movement of the mouse ball. The communication device also includes a light generating device that communicates with the port that generates the narrow beam. Provides a switch that can be selectively operated for selectively transmitting operation signals or light beams. The communication equipment includes an independent power supply as well as power level monitors and switching devices. Preferably, a laser beam or other focused beam.
In the multimedia teaching environment, most teachers use laser pointers to indicate the content projected on the screen. When encountering unexpected situations, teachers need to return to the office computer position and use the mouse to control the computer desktop, so as to go to and from the computer. The class time is wasted with other positions on the podium, and the existing mouse does not have the function of a high powered laser pointer, which causes teachers to often travel between the computer and other positions on the podium. At present, the most commonly used is the double heterostructure The electric injection GaAs diode lasers are usually red at 635nm; InGaN diode lasers are usually 532nm green and 405nm blue. The laser light emitted by a diode laser can be described by a Gaussian beam, which is characterized by a long strip of emitter with different emission angles in the horizontal and vertical directions. Usually only a few degrees in the horizontal, and up to 40 degrees in the vertical. In most optical coupling technologies, the horizontal angle is ignored, and the vertical angle is used as the divergence angle of the laser laser.