Teleview

It made its public debut on 27 December 1922 at the Selwyn Theatre in New York City, the only theater ever equipped with the system.

Left-eye and right-eye films were run through a pair of interlocked projectors with their shutters operating out of phase.

At the minimum 16-frames-per-second silent film projection speed, this resulted in a minimum of 48 flashes per second per eye, eliminating the severe flicker that fatally flawed earlier systems in which the left-eye and right-eye frames alternated on a single strip of film projected at twice the normal rate.

Hammond's system won praise, but because of the high cost of installing the equipment, and the inconvenience of having to peer through the unwieldy viewer, it disappeared completely after this lone engagement ended in early 1923.

Modern LC shutter glasses are used for viewing projected 3D films in some theaters, as well as 3DTV video and stereoscopic computer graphics.