High quality 3D rainbow holograms with diffused illumination

摘要

The parameters used for recording 3D rainbow holograms are analyzed theoretically. The analysis indicates that the object distance in recording Fresnel hologram is a key parameter for diminishing field curvature and image blur due to wavelength spread and extended source size. To obtain sharp image under extended illumination, the object distance must be reasonably large. The experimental results verify the theoretical analysis.