White-light transmission holographic interferometry using chromatic corrective filters

An external corrective filter is used to achieve image reconstruction from transmission holograms in white light. In effect, the corrective filter re-distributes the light diffracted from a suitably oriented hologram by stretching it horizontally and perpendicular to the direction of the dispersion of the hologram. The corrective filter, that can be described as a one dimensional random diffuser, also serves as a projection screen upon which the real image from the hologram is displayed. The method has been applied to study distortion of surfaces and aberrations of optical systems.