Recording and Reconstruction of Practical 3D Color Images by Phase-Shifting Electro-Holography

摘要

A phase-shifting holography system for recording 3D color images is developed with a color CCD, and red (R), green (G), and blue (B) lasers. The phase of reference lights in this recording system is precisely shifted by changing fringe patterns displayed on a high-resolution reflective LCD panel. RGB interference fringe patterns are able to be recorded at the same time for a practical color object by adopting a high-resolution color CCD. Color images in the wide visual field are recorded by adopting a multi-channel CCD and are reconstructed from the recorded hologram by adopting a multi-channel LCD modulator. Holograms for reconstruction of RGB images are obtained from recorded fringe patterns by the phase-shifting holography, and fine color images with high quality are reconstructed from recorded phase-shifting holograms by using the developed holographic color display system. The visual field of the holographic system is enlarged by adopting a multi-channel color CCD for recording of the image and a multi-channel LCD panel for reconstruction of the image.