The upper limit of the strong light brightness taken by the mobile phone = the upper limit of the brightness of the mobile phone screen, which is far inferior to the laser, which can make people uncomfortable but basically not harmful. We first open the "PPT remote control" on the computer side, and then scan the QR code with our mobile phone. WeChat is fine (but it is best to open it with a browser, so that it will not affect the use of WeChat). Some people may say that compared with the market The shape is full of science and technology, such a rectangle seems quite satisfactory, but in fact, the rectangular appearance can ensure the maximum utilization efficiency of the light source, and the safety of the projector bulb, that is, the heat dissipation power. So this is not only the choice of BenQ, but also the choice of basically all old traditional projector manufacturers. When the light is at its strongest, a brown line will appear in the middle. If you keep your hand from shaking, there will be a colored column in the middle of the line, which will bounce like an audio cable. It's a pity that I am holding a Laser pointer and a mobile phone to take pictures. Turning on the infrared is operated on the mobile phone. Generally, there is an option to turn on the infrared under the "Connect" menu. After turning on the mobile phone, there will be a sign indicating that the infrared is turned on. Connecting to the computer with a data cable and infrared transmission are two types of data transmission Way.
You can use mobile phone infrared to transmit data to a computer or other mobile phones with infrared functions, but the disadvantage of infrared is to maintain a point-to-point connection between the two devices during the transmission process, and the transmission rate is also very slow. There is no convenience for Bluetooth. .You can transfer the picture to the computer, as long as your computer supports infrared, and turn on the infrared device, select the path to save, select the picture in the phone, and then choose to send via infrared, and the infrared interface of the phone is aligned with the infrared interface of the computer ,Start the transfer, the phone will prompt after completion.