Abstract: A sensor system (20) electrically connected to and controlling at least one recessed luminaire (30). The sensor system housing (22) is externally connected to the luminaire (30) and includes a flexible member (50) projecting therefrom. The flexible member (50) supports detection electronics spaced from the sensor system housing (22) or the coupled light fixture and sensor system housings (32, 22). The flexible member (50) allows a sensor (52) to be horizontally and vertically positioned relative to the sensor system housing (22).

Abstract: A sensor system (20) electrically connected to and controlling at least one recessed luminaire (30). The sensor system housing (22) is externally connected to the luminaire (30) and includes a flexible member (50) projecting therefrom. The flexible member (50) supports detection electronics spaced from the sensor system housing (22) or the coupled light fixture and sensor system housings (32, 22). The flexible member (50) allows a sensor (52) to be horizontally and vertically positioned relative to the sensor system housing (22).

Abstract: A direct and indirect suspended component light fixture is described herein. The light engine of the fixture is recessed within a ceiling and contains a plurality of linear fluorescent lamps substantially surrounded by an ellipsoidal reflector. The ellipsoidal reflector reflect light downward through a light output region to a suspended diffuser, the suspended diffuser acting as both a provider of direct and indirect light to generate smooth and even illumination both in the indirect and direct light components.

Abstract: A door frame mounted reflector system for a fluorescent troffer is depicted. The fluorescent troffer incorporates the utilization of a troffer housing and hingedly affixed to the troffer housing is a door frame which has attached thereto optical reflectors, the optical reflectors including optionally first and second lenses on either side of the centrally aligned basket and first and second upwardly extending downlight reflectors which extend upward from the longitudinal edge of the door frame towards the top wall of the troffer housing but which are not affixed to the top wall of the troffer housing. These downlight reflectors cover irregularities on the interior top wall of the troffer housing while providing smooth illumination characteristics to the lenses and basket.

Abstract: A retrofit unit for a fluorescent lighting fixture having a chamber with a ballast and a plurality of downwardly extending lamp holders for enclosing an existing fluorescent strip light fixture, wherein neither the ballast nor the lamp holders of the existing fluorescent lighting fixture need be removed to receive this retrofit unit.

Abstract: In order to provide efficient and uniform up and down lighting an elongated luminaire comprises an elongated concave primary down light reflector, a pair of secondary down light reflectors having slots approximately horizontal with a lamp, and a pair of up light reflectors attached to the secondary down light reflectors opposite the lamp and horizontal with the lamp and slots such that an efficient and uniform illumination across the ceiling surface and the floor area is accomplished.

Abstract: A retrofit unit for a fluorescent lighting fixture having a chamber with a ballast and a plurality of downwardly extending lamp holders for enclosing an existing fluorescent strip light fixture, wherein neither the ballast nor the lamp holders of the existing fluorescent lighting fixture need be removed to receive this retrofit unit.

Abstract: A retrofit unit for a fluorescent lighting fixture having a chamber with a ballast and a plurality of downwardly extending lamp holders for enclosing an existing fluorescent strip light fixture, wherein neither the ballast nor the lamp holders of the existing fluorescent lighting fixture need be removed to receive this retrofit unit.

Abstract: Disclose is a master-satellite assembly for retrofitting a first existing recessed strip light fixture and a second existing recessed strip light fixture in a grid ceiling, where the existing fixtures are arranged end to end and are separated by a T-bar support member. The assembly has a master retrofit fixture, a satellite retrofit fixture and a wire cover bracket. The master retrofit fixture is received within the first existing recessed strip fixture and the satellite retrofit fixture is received within the second existing recessed strip fixture with wiring running under the T-bar support. The wire cover bracket extends from the master retrofit fixture, under the T-bar support member, and to the satellite retrofit fixture in order to cover the wiring. Also disclosed is a method of retrofitting utilizing the master-satellite assembly, and a retrofit reflector configuration utilizing hanger tabs extending from the ends of the retrofit reflector.

Abstract: A retrofit unit for a fluorescent lighting fixture having a chamber with a ballast and a plurality of downwardly extending lamp holders for enclosing an existing fluorescent strip light fixture, wherein neither the ballast nor the lamp holders of the existing fluorescent lighting fixture need be removed to receive this retrofit unit.

Abstract: A retrofit fixture for installation into an existing recessed fluorescent strip fixture in an inverted T-bar grid ceiling. The retrofit fixture length is less than the length of the ceiling opening, except for hangar tabs which extend from a flange along a longitudinal edge. The fixture may be hung from the ceiling grid members by the tabs while wiring connections are made, and then swung into place. Lamps having a combined length greater than the length of the ceiling opening may be used by placing the lamp holders in a staggered arrangement.

Abstract: A tube guard system is provided for use in a flourescent light fixture and comprises at least one lamp assembly. The lamp assembly further comprises a lamp having two ends and having at least one terminal at each end, a sleeve having two ends and surrounding the lamp, and an end cap having a concentric opening formed thereupon affixed to each end of the sleeve whereby the terminals protrude through the openings in the end caps. A pair of lampholders affixed to the fixture receive each lamp used in the fixture whereby the terminals are placed in contacting relation with the lampholders. A preferred lampholder has a lamp center line of at least ⅝″, thereby allowing the use of low-profile lampholders having a lamp center line of ⅝″, or standard lampholders having a lamp center line of ⅞″. Preferred sleeves and end caps are of polycarbonate materials in order to provide heat and ultra violet resistance.

Abstract: A retrofit fixture for installation into an existing recessed fluorescent strip fixture in an inverted T-bar grid ceiling. The retrofit fixture length is less than the length of the ceiling opening, except for hangar tabs which extend from a flange along a longitudinal edge. The fixture may be hung from the ceiling grid members by the tabs while wiring connections are made, and then swung into place. Lamps having a combined length greater than the length of the ceiling opening may be used by placing the lamp holders in a staggered arrangement.

Abstract: A light fixture includes down lighting for directing light downwardly from the light fixture and includes an auxiliary side light to direct light onto wall surfaces having blackboards, bulletin boards and the like. The side light includes a refraction lens to wash the wall in light. Separate controls for the down light and side light are provided.