Patent ID: 8768159

Claim:
An apparatus comprising: a curved reflector having an interior and an open end, the curved reflector comprising a curved light-reflecting surface including a pair of opposing curved edges and a pair of opposing longitudinal edges that extend between corresponding endpoints of the opposing curved edges, wherein at least part of the curved light-reflecting surface has a surface color; a light module positioned around a perimeter of the open end of the reflector, the light module including: a first side having one or more interior light sources thereon, wherein the interior light sources emit light of a first wavelength or range of wavelengths toward the curved light-reflecting surface so that at least part of the curved light-reflecting surface reflects light of a third wavelength or range of wavelengths that results from interaction of the first wavelength or range of wavelengths with the surface color, and wherein the curved reflector provides bright-field illumination, and a second side having one or more exterior light sources thereon to direct light away from the reflector, wherein the one or more exterior light sources emit light of a second color that corresponds to a second wavelength or range of wavelengths, wherein the second wavelength or range of wavelengths is different than the first wavelength or range of wavelengths and the third wavelength or range of wavelengths, and wherein the surface color, the first wavelength or range of wavelengths, or both, are selected to reduce or eliminate reflection of the second wavelength or range of wavelengths by the curved light-reflecting surface; and a light pipe coupled to the second side of the light module and aligned so that light from the one or more exterior light sources is launched into the light pipe to provide dark-field illumination.