Abstract
Holography is an ideal three-dimensional display technique. However, its electronic implementation
requires light modulation by tremendous number of pixels whose pitch should be comparable to the
wavelength of light. In this paper, several techniques proposed to overcome the above difficulty are
shown; the technique using multiple spatial light modulators, the time-multiplexing technique, the
technique using acousto-optic modulators, the resolution redistribution technique, and the horizontally
scanning technique. Especially, the horizontally scanning technique is explained in detail; it is realized
using the screen scanning system and the viewing-zone scanning system. The 360-degree holographic
display is also realized based on the latter system.
