Smart projectors are capable of doing everything a smart TV can do but on a much bigger screen. These projectors are defined by their portable design, lamp-free technology, voice control, app integration, and streaming functionality. Smart projectors use smartphone assistance or its own Wi-Fi camera to conduct video calls. Most smart projectors use a Light-Emitting Diode (LED) lamp as the light source that is used for Digital Light Processing (DLP). Whereas, Liquid Crystal Display (LCD) projectors used a standard halogen or metal halide lamp. projector, device for transferring photographic and other images in an enlarged form onto a viewing screen. All types of projectors employ a light source and a lens system.