The technical background of the red laser pointer long-ranger
The multi-purpose indicator rod belongs to a red laser pointer long-ranger. The existing indicator rod has a single function, and the long-distance pointing board cannot be realized. The purpose of the present invention is to provide a long-distance pointing board and a multi-purpose indicator rod. In order to achieve the above object, the present invention mainly includes a main body part and a multi-stage telescopic rod. The outer wall of the main body part is provided with a POWER switch; the main body part is provided with a high-concentration LED red light. A cylindrical lens is installed at one end of the concentrated LED red light; the end of the main body part close to the concave parabola is provided with a transparent cover; the other end of the main body part is connected with a multi-stage telescopic rod, the multi-stage telescopic rod The extension end is movably connected with a blackboard pen.
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Software
Touch has changed the traditional input methods such as keyboard and mouse, making human-computer interaction more convenient. Common touch screens include infrared type, resistive type, surface acoustic wave type, capacitive type, etc. The user's finger touches the surface of the touch screen to generate signal conversion to realize control operation. However, these types of large-size touch screens are expensive, and there is a problem that human hands cannot touch or block the screen due to the large size of the touch screen when touching. Therefore, a remote-pointing virtual touch tool is needed. An ordinary Laser pointer emits a red laser to achieve long-distance indication, and set a button to perform simple operations such as flipping up and down the presentation. However, it cannot achieve the touch function of the touch screen. To realize the touch function of an ordinary laser pointer, it is necessary to recognize the red light from the image of the display screen, obtain the position of the red light, and then convert it into the operating instructions of the computer. Because the red light is mixed with the image of the display screen, it is easy to misidentify; Infrared laser pointer, equipped with infrared filter, can easily identify infrared laser, but its positioning is very difficult.
2021-10-09 08:28:46
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