Abstract: A reflective polarizing imaging lens includes at least one optical film having an active area that is curved in two orthogonal directions. Edges of the optical film are arranged to form seams between segments of the optical film in the active area of the reflective polarizing imaging lens.

Abstract: An apparatus is provided for permitting commercial-off-the-shelf (COTS) electronics to be utilized in harsh environments for which the COTS electronics are not designed, including environments having ambient temperature variations, ambient pressure variations, shock and vibration exposure, environmental contaminants and/or electromagnetic radiation which may be beyond the design specification of the COTS components. The device includes a sealed enclosure having racks or other suitable mounts for the COTS components and having an environmental controlled unit (ECU) which circulates a fluid such as air through the enclosure and through the mounts. The temperature in the enclosure is monitored and the ECU operated to heat or cool fluid passing therethrough to maintain temperature in the enclosure within the design limits of the COTS electronics. A flow channel for ambient fluid, which channel is sealed from the internally circulating fluid, may be provided for removing heat from a cooling unit of the ECU.

Abstract: A flap assembly includes a flap member (2) located at the trailing edge of an aircraft wing (4). A bracket (12) extends down from the flap member (2), and a mounting arm (8) extends rearwardly from the lower surface of the wing. Two link arms (14 and 16) are pivotally mounted at their upper ends (18 and 20) to the mounting arm (8), and at their lower ends (22 and 24) to the bracket (12). The flap member (2) is moved between its stowed and its downwardly extended positions by an actuating mechanism (26) which is mounted on the aircraft wing (4), and connected either to the flap member (2) or to the bracket (12). The actuating mechanism (26) may be of either a linear or a rotary type.