Cov chart Projector yog AC-powered ntaus ntawv npaj los ua ib daim duab ntawm ib qho screen rau kev kuaj pom.Daim ntawv nqa disc, daim npog ntsej muag thiab lub raj astigmatic tuaj yeem tswj tau los ntawm cov pob qhov rooj txhua qhov muab rau ntawm lub vaj huam sib luag pem hauv ntej ntawm lub projector.