How to compare different types of laser pointers

The laser pen is divided into red laser, green laser, yellow laser, blue laser and purple different types of laser pointers according to the light source. The red laser pointer has the simplest structure. It's simple because the red laser pointer is basically a diode, and the laser diode produces these wavelengths. Red laser Pointers first appeared in the 1980s. It's big and heavy and hundreds of dollars. It's very small and very cheap. From the beginning of the most original laser pen, through continuous research and development and production, Dahang laser pen began to combine laser pen, laser pen and computer demonstration, create page rotation laser pen and other multi-functional ldifferent types of laser pointers, multimedia education to a more intelligent, humanized direction. Remote laser pointer will also page rotation laser pen, laser page rotation pen, laser remote pen, wireless laser pen, wireless page rotation laser pen, PPT page rotation pen, PPT remote pen and so on. The most basic function of this kind of product is laser pointer and up and down page turning function, corresponding to the computer remote control, combined with wireless technology and computer USB technology to control the computer side rotation. Products usually include transmitters and receivers. The receiver is similar to a U-disk drive. Plug it into your computer's USB port and the computer will automatically install the driver. Press the button on the transmitter to control the computer wirelessly.