Theory of Parallax Barriers

This is the authors' abstract. We don't add key points for this paper.

The parallax barrier, which is a type of selective masking device now being applied in color television and in stereoscopic imagery, is discussed. A brief history along with the principle and geometric relationship underlying its operation is given. Various systems employing two or more image elements per aperture and utilizing the maximum image area are described. It is also shown that nonplanar and nonparallel arrangements are possible, and that plane barrier surfaces may be coupled to nonplanar image surfaces. Furthermore, lenses may replace the mechanical-type barriers resulting in a more light-efficient system. Formulae are presented and specific applications to multiple-color television tubes are discussed.