HOLOGRAM PRODUCING METHOD

摘要

The distance between a spatial light modulating device 7 and a lens 8 is set such that a real or virtual image position 9, 9' (L, L') of object light formed by the lens 8 is an observing position of a hologram 12'. Since a reconstructed image is fixed at the observing position L, L', noise existing in the reconstructed image of the spatial light modulating device 7' if any is fixed at the observing position and thus is unremarkable as noise, whereby the noise is substantially lowered. <IMAGE>