Patent ID: 8759733

Claim:
A lighting system comprising: a lighting fixture for a visible illuminating type lighting application in a region or area intended to be occupied by a person, the lighting fixture comprising: an optical integrating cavity having at least one white diffusely reflective interior surface and an optical passage for allowing emission of optically integrated light out of the cavity; and a plurality of light emitting diode (LED) sources coupled to directly supply light to the optical integrating cavity in one or more directions to cause substantial portions of light supplied by the sources to reflect from said at least one diffusely reflective surface of the optical integrating cavity one or more times to optically integrate the light from the sources before emission as the optically integrated light through the optical passage of the integrating cavity for the visible illuminating type lighting application; a control circuit coupled to the sources for establishing output intensity of light of each of the sources; and a deflector having a reflective inner surface coupled to the optical passage and configured to expand outward as it extends away from the optical passage for deflecting at least some of the optically integrated light emitted through the optical passage and defining a field of illumination for the emitted light with respect to the lighting application.