Figure 9 shows the similarity between a line scatterer and a reflection grating. A ray from a pointsource PS is reflected from these two optical devices. In the grating diagram, the first order rays r1 and r1' lie on a conical surface. Suppose the diffraction grating in Figure 9 was illuminated by broadband white light. Each wavelength would produce zero-order rays at a different angle, and the large number of rays would tend to fill in the entire scattering cone. When a Rainbow hologram is illuminated with white light, just such an effect occurs. When a white-illuminated Rainbow hologram reconstructs an image, the hologram fringe structure produces a set of these scattering cones, just as if the hologram was actually composed of independent line-scatterers. In other words, Rainbow holograms do not employ optical interference in order to reconstruct an image. Instead they rely upon the optics of line-scatterer arrays. Obviously some interference effects are present in a Rainbow hologram, but they only impact the viewing angle, as well as producing the familiar rainbow-colored artifact. The structure of the image is produced only by the angle of the fringes, not by interference which critically relies on fringe spacing.