Abstract: An arrangement for two side-by-side elongated lamps in a lighting fixture in which lampholders are alternately mounted on opposite sideplates or brackets of the lighting fixture. The lighting fixture has an inside dimension that is longer than the length of each lamp/lampholder combination by a length sufficient to prevent the distal end of the lamps from overlapping the exposed plug portion and the lampholder of any of the adjacent lamps.

Abstract: A mounted cantilever bracket is provided in which a cantilever is secured in a sleeve bearing assembly, is mounted to a wall or parapet by means of vertical trusses, at least one supporting brace, at least one horizontal support, and an angle support landing, and is easily and safely disengaged by a locking pin to horizontally swivel about a vertical fulcrum bolt. A mounted cantilever bracket is provided such that repair and maintenance of fixtures attached to the exteriorly extended end of the cantilever may be accomplished safely and expediently.

Abstract: A lamp socket mounting bracket which contains a pair of mounting clamps and is mounted within a reflector. The mounting clamps have reflector ends and socket ends which each have feet. The mounting clamps have curved portions to encompass a lamp socket which forms a fulcrum within the lamp socket mounting bracket. A clamp adjusting means is used at the socket ends of the mounting clamps to tighten the mounting clamps around the lamp socket, help make a substantial contact between the mounting clamps and the lamp socket, and create, along with the fulcrum, a reverse scissors action within the lamp socket mounting bracket.

Abstract: A device which will maximize the versatility of lighting configurations using lighting modules. The device includes a universal mounting system with a base, elongated stems, and at least one mounting frame, that in combination with one or more lighting modules can be used as a floor, ground or ceiling lighting fixture.

Abstract: A mounting device for adjustability and lockability of a reflector within a luminaire and for reduction of dark spots in the lighting pattern of adjacently mounted luminaires. The device includes an elongated reflector, mounting straps which may be inserted into and tightened against the reflector and which receive other components of the device, lampholders which may be connected to the mounting straps, mounting brackets, one arm of which is attached to a surface and the other arm of which may be connected with mounting fulcrum screws to a left end mounting strap, a right end mounting strap, or to the left and right end mounting straps of two adjacently mounted luminaires, and locking clamps which may be connected with orientation locking screws to mounting straps and may be clamped to mounting brackets by tightening the orientation locking screws.

Abstract: A lighting fixture is provided which includes a rotatable lamp and reflector system which can be adjusted to direct its maximum candlepower at a desired vertical angle. The lighting fixture also includes a rotatable glareshield which can be adjusted to vary the height of the top of the shield to change the degree of shielding provided. The glareshield and the housing of the lighting fixture form an interchangeable unit which can be installed after wiring. The glareshield may be adapted to provide diffused or patterned backlighting. A removable supplementary baffle may be employed to prevent glare or reflected light from being viewed by a person beneath the lighting fixture, or to prevent undesired backlighting beneath the lighting fixture.

Abstract: An overhead lighting system for one or more visual display terminals includes one or more luminous elements and a baffle having a series of rails mounted at least partially below the luminous element. The baffle reduces reflections of overhead surfaces, especially the lighting equipment and the ceiling, in the screen of the visual display terminals while economically maintaining comfortable lighting. The overhead lighting system provides greater comfort and productivity of personnel who utilize visual display terminals. It is particularly, but not solely, suited to computer classrooms, stock brokerage firms, or other large areas where one or more visual display terminals are used in an open environment.

Abstract: An illumination system for a workstation having a backwall, a substantially horizontally disposed work surface, and a visual display terminal adapted to be viewed by an operator in a direction substantially perpendicular to the backwall is disclosed. The system provides a backlighting component of illumination as well as task lighting and ambient lighting.

Abstract: A luminaire having parabolic reflector elements to obtain strong crossed beams of reflected light forming the main components in a batwing distribution, with elliptical reflector elements to reflect light toward the center and mid-zones of the distribution pattern but not toward the peripheries, to improve the uniformity of the illumination on a surface and to reduce direct discomfort glare. The luminaire has special utility for uplighting, to illuminate a ceiling which can thus produce indirect illumination of an area, relatively free from veiling reflections.

Abstract: A desk level work area and its immediate environment are lighted with reduced or eliminated glare and veiling reflections from the task, by a lighting fixture mounted between seated eye height and standing eye height. The lighting fixture comprises an elongated housing, a light source within the housing providing illumination longitudinally of the housing, and a refractor plate capable of distributing luminous flux from the light source in a bat wing configuration. The plate is mounted on the housing such that the bat wing configuration of the luminous flux is directed essentially to the right and left of a viewer transversely facing the light source.

Abstract: A luminaire having a pair of parabolic reflectors or a reflector having a continuous parabolic surface of revolution, a light source within the parabolic surface or surfaces having a light emitting envelope, and a plurality of light absorbing surfaces positioned to cut off substantially all light emanating from the light source envelope which would otherwise have been reflected or directed into the zone of about 45.degree. to about 90.degree. above nadir. The parabolic reflectors or surface are arranged to provide maximum candlepower in the zone of about 25.degree. to 45.degree. above nadir. The luminaire eliminates direct discomfort glare and substantially eliminates veiling reflections in seeing tasks located on the working plane. The luminaire is adapted for surface, pendant or recessed ceiling mounting or for mounting above the task area from floor or table mounted supports, or inverted to illuminate the ceiling.