Teleprompter, also known as an autocue, is a display device that prompts the person speaking with an electronic visual text of a speech or script.
Using a teleprompter is similar to using cue cards. The screen is in front of, and usually below, the lens of a professional video camera, and the words on the screen are reflected to the eyes of the presenter using a sheet of clear glass or other beam splitter, so that they are read by looking directly at the lens position, but are not imaged by the lens. Light from the performer passes through the front side of the glass into the lens, while a shroud surrounding the lens and the back side of the glass prevents unwanted light from entering the lens. Mechanically this works in a very similar way to the Pepper’s ghost illusion from classic theatre: an image viewable from one angle but not another.
See our related products:
