Projection display surface providing speckle reduction

A projection display surface for reducing speckle artifacts from a color projector having at least three narrow band light sources having first, second and third incident visible wavelength bands, respectively, wherein each incident visible wavelength band has an associated incident peak wavelength and an associated incident bandwidth, comprising:

• a) a substrate having a reflective layer that reflects incident light over at least the first, second and third incident visible wavelength bands;
• and
• b) a first fluorescent agent distributed over the reflective layer, wherein the first fluorescent agent absorbs a fraction of the light in the first incident visible wavelength band and emits light over a first emissive visible wavelength band having a first emissive peak wavelength and a first emissive bandwidth;
• wherein return light from the projection display surface produced when incident light in the first incident visible wavelength band is incident on the projection display surface contains light in both the first incident visible wavelength band and first emissive visible wavelength band, thereby reducing speckle artifacts, and wherein the projection display surface is polarization preserving such that polarization of the return light is substantially the same as the polarization of the incident light.