What type of display technology is typically used for projecting images over large areas?

The technology commonly associated with projecting images over large areas is indeed a projector. Projectors utilize lenses and light sources to cast images onto a flat surface, allowing for a significant enlargement of the visual content. This makes them particularly useful in settings such as classrooms, conference rooms, and home theaters where a large display is needed.

While video walls can also present images in a large format using multiple screens, they involve a setup of several displays working together rather than a single projection source. Similarly, screen projectors refer specifically to the screen onto which images are projected, not the projection technology itself. Televisions, while capable of displaying large images, are generally limited by their size compared to what can be projected using a projector, especially in professional or educational scenarios where bigger screens are necessary for visibility. Therefore, the correct choice highlights the fundamental technology specifically designed for this purpose: a projector.