Abstract: An optical interface for coupling a refractor and a reflector in a luminaire assembly includes a flange having an inner surface and an outer surface, the outer surface having reflecting means and disposed adjacent an air gap, the flange having a shape which works in concert with the reflector and is adapted to be affixable to the reflector and the refractor.

Abstract: An open type luminaire lens including a non-circular reflective lens having a metalized exterior surface and a prism section, the non-circular reflective lens having a shape generally defined by the combination of two parabolas, the prism section including and array of external reflecting prisms of varying predetermined shapes and varying predetermined sizes for use in providing a desired efficient light distribution.

Abstract: A modular mounting-arm assembly for use with a luminaire, the modular mounting assembly including a housing and a removable access door hingedly affixable to the housing for receiving and supporting an electrical assembly. The electrical assembly comprises electrical components having electrical connections which terminate in a mounting arm quick disconnect.

Abstract: A faceted reflector assembly including a plurality of reflector segments which are preferably, but not necessarily, comprised of pre-anodized and enhanced aluminum having a specular, semi-specular or a diffuse finish. The reflector segments include interlocking means such as tabs and slots for attachment to other reflector segments. The reflector segments, when interlocked, form the faceted reflector of the present invention.

Abstract: An open type luminaire lens including a non-circular reflective lens having a metalized exterior surface and a prism section, the non-circular reflective lens having a shape generally defined by the combination of two parabolas, the prism section including and array of external reflecting prisms of varying predetermined shapes and varying predetermined sizes for use in providing a desired efficient light distribution.

Abstract: An improved pull-on clip intended to position and maintain in place a reflector trim within a downlighting housing or “can” and particularly to bias the trim against an opening in a ceiling to retain a finishing flange of the trim in place about the opening. The present clip can be manually assembled to the trim by means of a snap-fastening structure provided on an attachment end of the clip, the use of tools being unnecessary for assembly of the clip to the trim. The clip facilitates lamp positioning within the can and thereby within the fixture such that optimum lamp performance is obtained.

Abstract: A universal load-bearing hanger bracket for hanging a lighting fixture below a grid ceiling has opposed shaped hanger strips which when joined together form an elongated bracket body having a base end with a T-bar channel for securing the hanger bracket to the T-bar of the grid ceiling to thus provide an “on-grid” suspension, and a rail gripping structure above the T-bar channel for securing the hanger bracket to an optional mounting rail of a grid ceiling for an “off-grid” suspension. A hanger bracket assembly is further described wherein an electrical junction box is secured to the body of the hanger bracket and wherein a female plug having a downwardly facing plug end is provided at the bottom wall of the junction box so as to extend through the grid ceiling to provide an accessible electrical outlet next to the suspension location for the lighting fixture.

Abstract: A luminaire lens assembly having a top lens including an external reflecting area and a bottom lens with an external refracting area and an internal refracting area, wherein the internal refracting area has at least three concentric prismatic areas, a first concentric prismatic area having a first defined number of prisms, a second concentric prismatic area disposed directly adjacent the first concentric area having a second defined number of prisms at least 1.5 times as great as the first defined number of prisms, and a third concentric prismatic area disposed directly adjacent the second concentric area having a third defined number of prisms at least 1.5 times as great as the second defined number of prisms whereby the first concentric prismatic area further defines a radius, the second concentric prismatic area defines a second radius at least 1.5 times as great as the first concentric prismatic radius, and the third concentric prismatic area defines a third radius at least 1.

Abstract: Coated articles having optically useful reflective properties suitable for manufacture of components of lighting fixtures and the like including parabolic louvers utilized as primary elements of fluorescent parabolic troffer lighting fixtures, the invention provides light sheets formed of said coated articles and used in the manufacture of lighting fixtures, the reflective lighting components formed from said light sheets and the coated articles including the coatings utilized for coating optically reflective substrates according to the invention. The coated articles are formed of reflective substrates and particularly polished metal substrates having reflectance values within a predetermined useful range, the substrates being coated preferably with a thin polymeric coating wherein the base polymer is polyester, polycarbonate, epoxy, acrylic, acrylate, etc.

Abstract: A luminaire 11 has baffle elements 31 in the down light opening of the luminaire's housing 15 for shielding the luminaire's light source 27 from direct view at normal viewing angles S. The bottom edges 51 of the baffle elements are provided with visual accent areas 55 which, at shielded viewing angles, exhibit relatively high observable brightness as compared to the relatively low observable brightness of the baffle elements' reflective surfaces 53. The visual accent area of the baffle elements is relatively small as compared to the baffles' reflective surfaces so as to produce a visual accent without visual discomfort associated with direct and reflected glare.

Abstract: An indoor luminaire assembly for installation in a grid ceiling which has a low plenum depth profile and defines a ceiling plane, which includes a frame which is disposed in the grid ceiling and is co-planar with the ceiling plane. Also included is a reflector which is attached to the frame and is disposed substantially above the ceiling plane. The reflector includes a highly specular reflective inner surface which has a relatively high specular reflectance of approximately 95%. A lamp is also included for generating light vertically oriented from the reflector. Further, an optical unit is attached to the frame and has a prismatic refractor which is disposed substantially below the ceiling plane for distributing light therethrough.

Abstract: A housing for a direct-indirect lighting fixture having a light baffle in the bottom opening of the fixture is fabricated from a unitary extruded part having a baffle plate integrally interconnecting sidewall portions and a central housing structure for the lighting fixture housing. The baffle plates are provided with a suitable aperture pattern by means of a punching process.

Abstract: A system for promoting passive end of life light source failure in response to thermal cycling of the light source includes an automatic relay in communication with a ballast or groups thereof for interrupting power to the associated light sources. Alternatively, the relay may be configured to short out the light source directly. The automatic relays are configured to turn off associated light sources at predetermined or random times for predetermined or random durations.

Abstract: A door frame hingeably mounted to a lensed fluorescent troffer lighting fixture and carrying a prismatic lens cover, the door frame also integrally provides a light trap function. Structural components of the door frame have fastening elements formed integrally therewith for attachment of said components together without the use of separate fastening elements. The door frame includes low profile latching structure which allows ready opening of the door frame for relamping or other maintenance functions, hinge elements acting not only to hold the door frame to the light fixture but also to hold the door frame in a fully open position. The door frame further acts to impart rigidity to the lighting fixture when in a closed position.