What is the principle of laser pointer?

Why don't you teach the team? Is Pugandi worth going? Have you retired from playing ball? Second, the product principle The wireless laser pen consists of a radio frequency remote controller and a receiver (USB interface). The radio frequency remote controller is embedded with a wireless radio frequency transmitter. When in use, the receiver can work normally without installing a driver. Users can operate the receiver by clicking the related function keys of the RF remote controller. The sender does not need to aim at the receiver, which truly embodies wireless freedom. Third, the product function wireless laser pen can completely liberate you from the computer. Users don't have to stay in front of the computer all the time. When you need to take notes on the important contents of electronic teaching, demonstration and report speech, just press the red laser point with your hand and it will be mapped to the document content screen that you need to emphasize. There is no need to "tell the audience what to do" or "get in touch with the audience" every time you explain the key content; At the same time, you can turn the electronic manuscript to the page you want to talk about 360 degrees freely by clicking the relevant function button; Whether you are in the classroom, lecture hall or at the back of the conference room, you can interact with the speaker on the spot. Just press the page turning key of the wireless page turning laser pen, and the picture you want will automatically appear on the screen. You don't need to sit in front of the podium to operate the computer forever, and you don't need to go back to the podium to change pages, which truly embodies wireless clicking and gets unlimited excitement! Product features: 1, built-in laser pointer, buttons with related remote control functions. Pressing the Pageup and Pagedown buttons is equivalent to pressing the page up and page down keys of the computer keyboard. 2. RF wireless connection technology does not need to aim the transmitter at the receiver. 3. USB interface, plug and play, practical function, simple operation and convenient use. 4. The transmitter is ergonomically designed and suitable for long-term use; The receiver is beautiful and compact, saving space. 5, the product adopts the most advanced RF design, micro-power emission, no harm to human body, green, healthy and environmentally friendly. V. Applicable Objects and Scope The wireless laser pointer is a good assistant for teachers, trainers, experts, scholars, professors, speakers and mobile business people, and also a good electronic gift for business. Laser electronic pointer can be widely used in schools, scientific research institutes, government agencies, intelligence-intensive enterprises, training centers, hospitals, hotels, exhibitions, bidding, business exchanges and other occasions; At the same time, the wireless laser pen is also an essential accessory and the best promotional gifts for projectors and notebook computers, and it can provide personalized LOGO branding services according to users' needs. 1. When speaking to key or important content, users no longer need to go to the projection screen in person and touch it with their hands. 2. Completely remove the speech restriction caused by the inconvenience of traditional mouse manual operation, and solve the constraint that users can't leave the podium to speak. 3. It can meet the needs of current multimedia voice demonstration, improve the voice effect of users to the maximum extent, and improve the use level and work efficiency of modern information voice tools for users.