The existing green laser pointer can only display light spots on the whiteboard or the screen, and can only play the role of indicating the position. In modern teaching, more and more classroom interactions require not only to indicate the position, but also to display "right" and "wrong" information in a timely manner. Although computer PPT software can achieve this function, it needs the support of computer hardware and related software, and requires higher equipment. Traditional projectors do not have this function. A remote control station can visit at least one of two different robots, and each robot has at least one unique robot function. The remote control station receives information identifying the robot characteristics of the visited robot. The remote station displays a user interface that includes at least one field corresponding to the robot feature of the visited robot. The robot may have a laser pointer and/or projector. Visible light (VL) and infrared (IR) combined image camera laser pointer. This laser pointer can be used to mark hot spots on an object or to focus the camera's infrared lens on the object. This laser pointer may be adjacent to the VL optics and deviate from the IR optics. The VL sensor array may be much larger than the IR sensor array, and the camera can also display the pixels of the IR data with an instantaneous field of view much larger than the VL pixels. The camera can also provide an audible alarm, where an alarm is issued with a variable output tone to indicate the relative level of the alarm.
Laser pointers are also called PPT page turning pens, electronic pointers, wireless high powered laser pointers and other names. In addition to the mapping function of traditional laser pointers, they can also be used wirelessly by simply pressing the page up and down buttons on the laser pointer. It is very convenient to remotely control the computer or multimedia projection equipment to realize the free turning of the slides and the free presentation! It is an input device commonly used in smart devices. Traditional laser pointers use dry batteries or rechargeable batteries for power supply. Due to the short service life of dry batteries, users often need to replace the laser pointer with new batteries. This is not only troublesome but also increases the cost of the later use of the laser pointer. In addition to the use of dry batteries, some laser pointers also use rechargeable batteries, but the rechargeable batteries have long charging time, short life Pen products have not been widely used.