Abstract: A system for controlling a set of light sources may include a set of light sources, at least one optical conduit arranged relative to the set of light sources so as to collect excess light from the set of light sources, and at least one sensor coupled to the optical conduit and configured to sense light collected by the optical conduit. The system may also include a controller configured to control the emittance of the set of light sources based on the light sensed by the sensor. A method for controlling a set of light sources may comprise individually varying power supplied to at least some of the light sources in an imperceptible manner, sensing light emitted by a light source for which the power has been varied, and controlling the emittance of the set of light sources based on the sensed light.

Abstract: A system for controlling a set of light sources may include a set of light sources, at least one optical conduit arranged relative to the set of light sources so as to collect excess light from the set of light sources, and at least one sensor coupled to the optical conduit and configured to sense light collected by the optical conduit. The system may also include a controller configured to control the emittance of the set of light sources based on the light sensed by the sensor. A method for controlling a set of light sources may comprise individually varying power supplied to at least some of the light sources in an imperceptible manner, sensing light emitted by a light source for which the power has been varied, and controlling the emittance of the set of light sources based on the sensed light.

Abstract: A luminaire includes a waveguide having first and second opposing ends and first and second opposing sides between the first and second ends. The waveguide is configured to totally internally reflect light propagating through the waveguide in a first direction and direct light propagating through the waveguide in a second direction through at least one of the first and second sides. A reflective body is coupled to the second end of the waveguide and configured to reflect light propagating towards the second end of the waveguide such that the light propagates towards the first end of the waveguide.

Abstract: A luminaire includes a waveguide having first and second opposing ends and first and second opposing sides between the first and second ends. The waveguide is configured to totally internally reflect light propagating through the waveguide in a first direction and direct light propagating through the waveguide in a second direction through at least one of the first and second sides. A reflective body is coupled to the second end of the waveguide and configured to reflect light propagating towards the second end of the waveguide such that the light propagates towards the first end of the waveguide.

Abstract: A luminaire includes a waveguide having first and second opposing ends and first and second opposing sides between the first and second ends. The waveguide is configured to totally internally reflect light propagating through the waveguide in a first direction and direct light propagating through the waveguide in a second direction through at least one of the first and second sides. A reflective body is coupled to the second end of the waveguide and configured to reflect light propagating towards the second end of the waveguide such that the light propagates towards the first end of the waveguide.

Abstract: A projection-type imaging array comprising a plurality of microfluidic devices (1, 1?) are provided, each microfluidic device having a reservoir (30) containing first and second fluids (10 and 20) that are immiscible with respect to teach other. A drive unit (40) is provided for each microfluidic device to selectively displace the surface formed at the interface between the first and second fluids. Accordingly, when a particular microfluidic device is turned OFF according to the drive unit, the interface surface is positioned to redirect incoming light (via reflection/refraction) away from a display surface (80). Conversely, when the microfluidic device is turned ON, the interface surface is positioned so that the incoming light is directed toward the display surface.

Abstract: A luminaire is provided with a one-sided diffuser, located a predefined distance below the light output ports, in order to efficiently distribute light through an upper smooth surface and a lower surface having light altering tracks where each wherein each light altering tracks distributes its received light over a range of angles within a predefined cutoff angle.

Abstract: A nuclear hardened liquid crystal display (LCD) and a method for hardening a liquid crystal display is provided. The nuclear hardened LCD can include an LCD glass laminate stack. The LCD glass laminate stack can include a front transparent substrate, a back substrate, and a liquid crystal material disposed between the front transparent substrate and the back substrate. The nuclear hardened LCD can further include a protective laminate stack positioned in front of the LCD glass laminate stack. The protective laminate stack can include a volume absorbing filter, that absorbs selective electromagnetic energy throughout a thickness of the volume absorbing filter.

Abstract: Ultraviolet radiation is used to disinfect water or a fluid in a flow tube, where the flow tube acts as a fluid filled light guide for the ultraviolet radiation and the ultraviolet radiation propagates through the flow tube via total internal reflection.

Abstract: Ultraviolet radiation is used to disinfect air (105) in a flow tube (110), where the flow tube (110) includes total internal reflecting features (120) on a portion of its external surface and said ultraviolet radiation propagates through a portion of the flow tube via total internal reflection.

Abstract: A luminaire includes a waveguide having first and second opposing ends and first and second opposing sides between the first and second ends. The waveguide is configured to totally internally reflect light propagating through the waveguide in a first direction and direct light propagating through the waveguide in a second direction through at least one of the first and second sides. A reflective body is coupled to the second end of the waveguide and configured to reflect light propagating towards the second end of the waveguide such that the light propagates towards the first end of the waveguide.

Abstract: Missile deflector systems for protecting a vehicle from threats that use an infrared sensor for guidance are disclosed. An exemplary missile deflector system can include, for example, a radiation source and one or more deployable smart chaff elements. The light source and the one or more deployable smart chaff elements can direct the threat, such as, for example, a missile, away from the vehicle or, in other embodiments, disable the threat. Another exemplary missile deflector system can include, for example, a smart chaff element with a near-infrared emitter and a plurality of transmitting fibers to transmit the near-infrared radiation out of the smart chaff element.

Abstract: Missile deflector systems for protecting a vehicle from threats that use an infrared sensor for guidance are disclosed. An exemplary missile deflector system can include, for example, a radiation source and one or more deployable smart chaff elements. The light source and the one or more deployable smart chaff elements can direct the threat, such as, for example, a missile, away from the vehicle or, in other embodiments, disable the threat. Another exemplary missile deflector system can include, for example, a smart chaff element with a near-infrared emitter and a plurality of transmitting fibers to transmit the near-infrared radiation out of the smart chaff element.

Abstract: A projection-type imaging array comprising a plurality of microfluidic devices (1, 1?) are provided, each microfluidic device having a reservoir (30) containing first and second fluids (10 and 20) that are immiscible with respect to teach other. A drive unit (40) is provided for each microfluidic device to selectively displace the surface formed at the interface between the first and second fluids. Accordingly, when a particular microfluidic device is turned OFF according to the drive unit, the interface surface is positioned to redirect incoming light (via reflection/refraction) away from a display surface (80). Conversely, when the microfluidic device is turned ON, the interface surface is positioned so that the incoming light is directed toward the display surface.

Abstract: A nuclear hardened liquid crystal display (LCD) and a method for hardening a liquid crystal display is provided. The nuclear hardened LCD can include an LCD glass laminate stack. The LCD glass laminate stack can include a front transparent substrate, a back substrate, and a liquid crystal material disposed between the front transparent substrate and the back substrate. The nuclear hardened LCD can further include a protective laminate stack positioned in front of the LCD glass laminate stack. The protective laminate stack can include a volume absorbing filter, that absorbs selective electromagnetic energy throughout a thickness of the volume absorbing filter.

Abstract: A luminaire for distributing light rays from a light source may include first and second reflector sections. The first reflector portion may be configured to direct light rays in a first direction substantially perpendicular to a longitudinal axis of the luminaire. The second reflector portion is disposed along the longitudinal axis configured to direct light rays in a second direction. The second direction may have a directional component substantially normal to the longitudinal axis and the first direction.

Abstract: A luminaire for distributing light rays from a light source may include a region configured to contain a lamp. The region may extend along a longitudinal axis of the luminaire. The luminaire may include first and second reflector portions disposed along the longitudinal axis. The first reflector portion may be configured to direct light rays in a direction away from the ceiling, and the second reflector portion may be configured to direct light rays in a direction toward the ceiling. The light source may be between the second reflector portion and the ceiling, with the second reflector portion defining a cusp disposed at a first side of the light source. The first reflector portion may extend through the second reflector portion and beyond the light source to a second side of the light source opposite to the first side.

Abstract: A luminaire including a lamp, reflector, collimator and optional waveguide. The waveguide can be solid or hollow or include several serially-arranged total internal reflection (TIR) components for redirecting light that has entered the waveguide. In one embodiment, the TIR components are prisms, but are provided without metallized coatings thereby significantly reducing manufacturing costs. In another embodiment, components are arranged in a vertical orientation such that light is directed downward through a collimator or upward, either directly from the lamp or as a result of reflection from the reflector.

Abstract: An illumination system comprising a light source that emits light of a first sense and a second sense. The illumination system also comprises a collimator that collimates light from the light source along an optical axis and within a maximum angle with respect to the optical axis. The illumination system further comprises a filter that reflects light of the first sense, the filter positioned at an angle other than normal to the optical axis and other than 45 degrees from the optical axis. Further, the illumination system also includes an optical system positioned along the optical axis to accept light that passes through the filter and transmits the portion of the light within the maximum angle.

Abstract: Ultraviolet radiation is used to disinfect water in a flow tube, where the flow tube acts as a fluid filled light guide for the ultraviolet radiation and the ultraviolet radiation propagates through the flow tube via total internal reflection.