YG300 LED Projector 3D HD Portable Mini Pocket LCD

A projector, also known as a projector, is a device that can project images or videos onto a screen. It can be connected to a computer, VCD, DVD, BD, game console, DV, etc. through different interfaces to play the corresponding video signal. Projectors are widely used in homes, offices, schools and entertainment places. According to different working methods, there are different types such as CRT, LCD, DLP, 3LCD, etc. The light sources used in projectors include traditional high-intensity gas discharge light sources (such as ultra-high pressure lamps, short-arc xenon lamps, metal halide lamps) and new solid-state light sources represented by LED light sources and laser light sources. The traditional light source has high brightness and good color[5], but the projector will usually make the projected image darker and yellower (such as brightness attenuation, color saturation contrast reduction, etc.) after a period of use, as the light emitted by the light source decays. So regular maintenance and replacement of bulbs are required. With the development of semiconductor lighting technology and laser technology, LED light sources and laser light sources have not only developed rapidly in the field of lighting, but have also been widely used in the field of display. LED is the earliest product widely used in affordable home projectors among the new light sources. Because LED can make the imaging structure of the projector simpler, it is small in size, easy to carry, and simple to use. Projector products are suitable for teaching, business and Personal entertainment brings great convenience. But the disadvantage of LED is that the brightness cannot be very high, and the color is poor [5]. At the same time, as a perfect projection light source, the appearance and popularization of laser solves the defects of projectors using other light sources in terms of brightness attenuation, color, power consumption, etc. At the same time, because it is also a cold light source, it has the The bright feature fundamentally eliminates the need to wait for power-on and stable lighting when using traditional light sources [2] [3023] .