Abstract: Illumination devices for impinging light on tissue, for example within a body cavity of a patient, to induce various biological effects are disclosed. Biological effects may include at least one of inactivating and/or inhibiting growth of one or more pathogens, upregulating a local immune response, increasing endogenous stores of nitric oxide, releasing nitric oxide from endogenous stores, and inducing an anti-inflammatory effect. Biological effects may include upregulating and downregulating inflammatory immune response molecules within a target tissue. Wavelengths of light are selected based on intended biological effects for one or more of targeted tissue types and targeted pathogens. Light treatments may provide multiple pathogenic biological effects, either with light of a single wavelength or with light having multiple wavelengths.

Abstract: An aircraft ground guidance and parking system consisting of a lighting display unit adapted to be mounted at a parking station pointing directly down the on-course center line to be followed by the incoming taxying aircraft and at an elevation for viewing from the cockpit of the aircraft, the lighting display unit including an array of traffic lights, a scanning system for reading successive indicia on the side of the aircraft as it passes by a location at the parking station and thereby generating successive signals, and a control unit responsive to the signals to illuminate the traffic lights in successively different modes of operation to signal the pilot of the aircraft when to slow and to halt the aircraft, the lighting display unit further including an optical system for emitting narrow beams of light visible to the pilot of the aircraft through predetermined sectors at angles on both sides of the on-course center line and which selectively appear to extinguish or illuminate to indicate to the pilot hi