Evolution of the Classroom Projector

  • The Magic Lantern

    The Magic Lantern
    Magic lanterns projected images printed on glass slides. Oil lamps and candles served as light sources for the magic lantern. Chicago’s public-school system had a collection of approximately 8,000 lantern slides by the end of World War I.
  • Slide Projectors

    Slide Projectors
    Slide projectors require that the presented material be transferred to a 35mm slide allowing the user to project virtually anything that can be can put on film.
  • Opaque Projector

    Opaque Projector
    The opaque projectors was the sole option of the 50’s. The opaque projector allows the user to project printed material or small objects without having to convert them to another medium. This is achieved by turning to the page and placing the entire book into in the opaque projector. In use for nearly sixty years, the opaque projector projects the object by shining a bright lamp on the material to be viewed and directing the reflected light through a projection lens.
  • Overhead Projector

    Overhead Projector
    A transparency of any document can be easily generated with a copy machine. Once created, the transparency can be placed on an overhead projector and projected onto a wall or screen using a lamp and optics that are built into the projector.
  • Digital Projection Panel

    Digital Projection Panel
    The digital projection panel consisted of a large LCD, electronics, cooling fan, and a plastic or metal enclosure with a glass plate on both sides of the LCD.
  • Computer Projector

    Computer Projector
    The fully integrated digital data projector came into existence in the early 1990's and served primarily as a computer display projector for business, education and training.
  • Video Projector

    Video Projector
    The digital video projector also came into being in the early 1990's.Video projectors also served nicely as TV projectors that can project your satellite receiver programming or local broadcasts.
  • Smart Board Projector

    Smart Board Projector
    The Smart Board is an interactive whiteboard that uses touch detection for user input in the same way as normal PC input devices.The components are connected wireless or via USB or serial cables. A projector connected to the computer displays the desktop image on the interactive whiteboard. The whiteboard accepts touch input from a finger, pen or other solid object.