Abstract: Pilot Director Lights (PDLs) mounted on the exterior of a refueling tanker aircraft utilize visible light emitting diodes (LEDs) and infrared LEDs as light sources to provide visual information to the pilot of an approaching aircraft The PDLs are switchable between a visible mode that uses the visible LEDs and a covert mode that uses the infrared LEDs. The PDLs may include a plurality of light emitting devices arranged in arrays, rows, or other patterns, each light emitting device being configured to illuminate a particular symbol/pattern in one example. Each light emitting device may include a plurality of modular banks of LEDs which are configured to emit light through a clear lens within a particular field of view. The PDL arrays may provide visual feedback regarding the elevational and fore-aft position of the approaching aircraft relative to the boom envelope of the tanker aircraft.

Abstract: A lighthead for a dual-mode searchlight including a generally concave housing with an attached infrared (IR) light source assembly, an insulating barrier and air gap between the visible and IR portions of the assembly, and a reflector integral to the housing.

Abstract: Pilot Director Lights (PDLs) mounted on the exterior of a refueling tanker aircraft utilize visible light emitting diodes (LEDs) and infrared LEDs as light sources to provide visual information to the pilot of an approaching aircraft The PDLs are switchable between a visible mode that uses the visible LEDs and a covert mode that uses the infrared LEDs. The PDLs may include a plurality of light emitting devices arranged in arrays, rows, or other patterns, each light emitting device being configured to illuminate a particular symbol/pattern in one example. Each light emitting device may include a plurality of modular banks of LEDs which are configured to emit light through a clear lens within a particular field of view. The PDL arrays may provide visual feedback regarding the elevational and fore-aft position of the approaching aircraft relative to the boom envelope of the tanker aircraft.

Abstract: A white anti-collision light mounted on an aircraft utilizes a set of high-power light-emitting diodes (LEDs) and dedicated reflectors to distribute the light in a particular pattern that satisfies predetermined intensity requirements along a horizontal coverage area. The anti-collision light may include heat pipes for transferring heat from the LEDs to a set of cooling fins. Also, the LEDs may be electrically connected and controlled to provide redundancy and mitigate the effects of LED failures.

Abstract: A single-use disposable phlebotomy venous tourniquet formed from a strip of elastic fabric material. Such fabric may be initially selected or treated with a polymeric or elastomeric material to provide surfaces having predetermined frictional characteristics to minimize slippage and discomfort to the patient and to facilitate ease of use in knotting and releasing the tourniquet.