Abstract: Key information is locked within unstructured or semi-structured electronic documents or structured databases. Current user interfaces are either designed for information professionals and require training and high skill levels, or provide access to single structured data sources. Query suggestion technology provides a way that occasional users can get high value from unstructured or semi-structured data or heterogeneous structured data, or a combination of unstructured or semi-structured and structured data. In contrast to search technology, the user obtains structured results, that can be manipulated similar to spreadsheets, or via interactive visualization. Queries suggestions are ranked based on the terms or concepts entered by the user in addition to standard ranking methods such as ranking by frequency of usage.

Abstract: This invention is related to a light measuring apparatus and a method of using the device. It is used to measure various photometric quantities of the light emanating from a distant source of light.

Abstract: This invention is related to a light measuring apparatus and a method of using the device. It is used to measure various photometric quantities of the light emanating from a distant source of light.

Abstract: A light meter for measuring photometric quantities includes a telephotometer having a photo detector to receive light energy entering the telephotometer. A light metering valve, for the purpose of providing a variable field of view, is located in the body of the telephotometer generally at the focal plane of the objective lens of the telephotometer. A controller, which includes a digital processor in communication with the photo detector will process information from the photo detector and from a range finder included in the system to output light intensity of a target light source.

Abstract: A lens is provided for use with a solid-state light-emitting device, typically a light-emitting diode. The lens may be used in luminaries for roadway lighting and other applications. In one embodiment the lens includes a conical structure proximate the light-emitting source of the light-emitting device.

Abstract: A light meter for measuring photometric quantities includes a telephotometer having a photo detector to receive light energy entering the telephotometer. A light metering valve, for the purpose of providing a variable field of view, is located in the body of the telephotometer generally at the focal plane of the objective lens of the telephotometer. A controller, which includes a digital processor in communication with the photo detector will process information from the photo detector and from a range finder included in the system to output light intensity of a target light source.

Abstract: A lighting unit for illuminating a wall and adjacent ceiling area. The lighting unit includes a primary reflection element having a curved portion and a smoothly coupled planar portion. A light source is positioned within the lighting unit and a diffuser element can be used to obtain a desired illumination distribution.

Abstract: A portable traffic signal photometer is capable of rapidly and effectively measuring the intensity of light emanating from a traffic signal light. The photometer includes a housing member with a circular front opening for engagement with the lens of a traffic signal light. The photometer is pressed against the lens, and the light emanating from the traffic signal light is directed through an optical filter located inside the housing, which permits light from the traffic signal light emanating at a predetermined downward angle to pass through it. The light from the filter is directed onto a light-sensitive device, which produces an output signal proportional to the intensity of the light emitted by the traffic signal lens.

Abstract: A louver/lens assembly for placement in the light-emitting opening of a fluorescent light luminaire has a louver assembly mounted in the light-emitting opening of the luminaire. On top of the louver assembly, and between it and the fluorescent tubes, a prism lens, typically formed from a sheet of extruded transparent acrylic material, is placed. The lens sheet is flat on the surface facing the fluorescent tubes in the fixture, and has parallel longitudinal prisms formed in the surface overlying the louver assembly. The prisms are selected to direct light rays passing through the lens assembly downwardly through the openings between the longitudinal and transverse louvers of the louver assembly.

Abstract: A cut-off floodlight of the type having a straight light line, a reflector surface in a housing, and a light-emitting opening, and characterized by a reflector surface with a major portion parallel to the light line including a parabolic section on one side of the light line with its focus at and its vertex behind and to said one side of the light line to establish a main beam direction at an acute angle to the opening plane, and an opposite section on the other side of the light line to reflect light therefrom past the light line onto the parabolic section so its secondary reflection off the parabolic section will be close to the main beam direction.

Abstract: A refractive lens member for use with a luminaire is constructed to minimize high angle glare. The grid comprises a plurality of lenses which are interconnected by a rib structure to form a pattern of lenses in a network grid, with the lenses all lying substantially in the same plane. Each individual lens has a flat circular light incident surface and each lens has a substantially convex, spherical section light emergent surface. The rib structure is made of the same material as the lenses and may be integrally formed with the lenses to form the network grid. The rib structure is constructed to cooperate with the lenses to which prevent light at angles outside a pre-established range arrives on the light incident side surfaces from exiting from the light emergent surfaces of said lenses.

Abstract: An improved traffic signal lamp control system utilizes continuously burning lamps, such as fluorescent lamps or HID lamps, located inside a traffic signal housing or external to the housing to direct light toward the lens apertures of the housing. A light attentuation device, which may be either a mechanical shutter or a liquid crystal panel is placed in the path of light between the continuously energized lamp and the aperture of the housing to either block the passage of light from the lamp through the aperture or permit the passage of light therethrough. The conventional red, amber and green lenses are placed in the apertures, and the conventional traffic signal light control signals are used to operate the attentuation device. Substantial savings in power consumption are encountered since fluorescent lamps and HID lamps consume much less power than incandescent lamps, and considerably increased lamp life can be achieved.

Abstract: A luminaire for use with HID lightbulbs includes a housing having four primary identical compound curve reflector sections oriented with two sections on each side of the lamp to cause major projections of the light emanating from the luminaire diagonally of the longitudinal axis of the lamp in a horizontal plane to create a square or rectangular distribution of light on the surface to be illuminated. Auxiliary reflector sections are placed at the ends of the light bulb and interconnect the main reflector sections to create an increase in the light projected along the lamp axis to compensate for the reduction in inherent lamp intensity along its axis.

Abstract: A "wall-wash" lighting fixture is mounted on the ceiling along the top of a wall to be provided with a substantially uniform illumination downwardly from the fixture. An elongated fluorescent bulb is used as the source of light; and the reflector is comprised of at least a central section and two shorter end sections. The cross-section of the central section of the reflector differs from the cross-section of the end sections in a manner to cause greater amounts of light to be reflected a greater distance downwardly on the wall from the center section than from the end sections. This compensates for the non-uniform light intensity from the fluorescent bulb, and results in a more uniform illumination of the wall below the fixture.

Abstract: An outdoor luminaire for lighting a region adjacent a vertical wall includes a housing having an upper portion for containing the circuitry to energize a lamp and a lower portion with a reflector, a lamp socket and a transparent refractor enclosing the socket and reflector region. The socket and reflector are inclined downwardly toward the rear of the assembly and the reflector is formed with a U-shaped central portion and rearwardly and outwardly extending side portions. The refractor is provided with inside and outside prisms to direct the light in a predetermined pattern which is generally laterally to both sides of the fixture.

Abstract: An indirect multiple bulb fluorescent light fixture has an elongated rectangular housing with inverted V-shaped reflector members located beneath each of the bulbs and with an additional inverted V-shaped reflector member located between each pair of bulbs in the fixture. All of the interior surfaces of the fixture, including the side walls of the rectangular housing for the fixture, have specular surfaces. The angles of the V-shaped reflector members are selected to cause substantially all of the light emanating from the bulbs to be reflected out of the fixture and to minimize light reflected back into the bulbs for dispersing the light emanating from the fixture uniformly on the ceiling above the fixture without requiring translucent covers or other diffusers. This results in a significantly improved efficiency of the fixture over conventional fixtures which rely upon translucent covers to effect the desired light dispersion.

Abstract: A task lighting fixture is provided for concentrating illumination on a work area beneath and offset to the side of the fixture. To accomplish this, an open reflector having a specular surface is mounted above and off to one side of the area to be illuminated. Transverse parallel vertical cross sections of the fixture are identical and comprise short and long compound curves joined together to form a cusp. The long compound curve extends toward the work area on which the illumination is to be concentrated. A U-shaped fluorescent bulb has each leg parallel to the cusp and the axes of the legs each are located on lines dissecting the cusp of the reflector.

Abstract: A lighting unit comprising a lamp and a reflector provides high intensity, high efficiency, even illumination over an area of particular shape and size and has a cut-off angle which enables a person to approach close to the lighting unit without seeing the lamp or its reflection. The reflector comprises at least two spaced apart curved reflector surfaces which join each other along an edge line in a plane behind and spaced from the lamp. Points on the curve line of each reflector surface are spaced progressively farther away from the lamp than the edge line. Some points on the curve are located on the side of the plane remote from the lamp. The lighting unit, which may employ reflector surfaces in addition to those above mentioned, may be employed in systems wherein it projects light upwardly for downward reflection from a ceiling or projects light downwardly directly onto a work surface.

Abstract: A lighting fixture and method using multiple reflections having a housing with an open side. A lamp is mounted in the housing and produces rays of light which pass through the open side. First and second reflecting surfaces are carried by the housing for reflecting light. The first and second reflecting surfaces are positioned on opposite sides of the lamp so that direct rays from the lamp will strike the first reflecting surface and be reflected onto the second reflecting surface and then will be reflected through the open side of the housing at a high angle with respect to the angle of the original direct rays from the lamp.

Abstract: A lighting system for providing aesthetic and energy efficient lighting, for building interiors and exterior lighting, includes lighting fixtures including a high intensity discharge lamp and a novel lens. The lens is formed as a dropped square pyramid with four triangular lower panels and four generally vertical side walls. Prisms on the inner and outer faces of the lens produce a higher luminous intensity at an angle of about 30.degree. to 50.degree. than at nadir and project light at higher angles toward the corners of the lens than perpendicular to the sides of the lens, thereby producing a generally square, widespread light distribution pattern. The lens cuts off high angle light (with respect to nadir), thereby reducing glare.