An intra-oral imaging apparatus having an illumination system directing light symmetrically about an optical axis. A first array includes polychromatic light sources directing light over a first range of angles. A second array includes polychromatic light sources, each light source of the second array paired with a polarizer directing light over a second range of angles that is narrower than the first range of angles. A third array includes UV light sources directing the light over the second range of angles. Collection optics with an imaging lens system is disposed along an optical path direct reflected light to a detector that is disposed to form image data from the reflected light. An analyzer has its transmission axis oriented orthogonally to the polarizer to reduce specular reflection. A long pass filter blocks reflected UV light from the third array light sources.
