Abstract: An adjustable luminaire is disclosed, comprising a ballast housing and a reflector housing whereby the reflector housing is rotatably movable with respect to the ballast housing. The luminaire also comprises a light source, and preferably comprises a lens and a reflector so that light emitted from the luminaire may be adjusted. The preferred luminaire uses a unique internal clamping mechanism that frictionally attaches the ballast housing and the reflector housing to tighten and seal the luminaire from the elements. The luminaire can be adjusted by turning the head of a screw mounted on the outer surface of the ballast housing.

Abstract: A luminaire with modular louver shields is disclosed that is particularly suited for use in the interior of parking garage structures. The luminaire is constructed so as to address the three-dimensional lighting requirements in parking garages, providing adequate illumination while reducing the glare in drivers and pedestrians eyes and reducing the amount of light that spills out of the structure. This is accomplished by using a lens that disperses light in the appropriate manner and removable louver assemblies that block or diffuse light rays that would otherwise shine in drivers and pedestrians eyes or spill out into the adjacent neighborhood. The lens and modular louver assemblies can be utilized in a number of configurations depending on the layout of the structure and the objective being addressed (eg: glare control, light spill). Once the luminaires are installed, the louvers can be rearranged to accommodate changing lighting requirements.

Abstract: An optical louver luminaire having at least three stacked reflector members each of which is at least in part a surface of revolution, all centered on a common vertical axis. Each reflector has a central opening to receive a light source. The light source has a region of major luminance with an upper end and a lower end. The lower one of the reflector members cuts off light from the upper end of the region to determine the lower-most vertical angle of direct illumination, and others of the reflector members determine the cut-off angle of the greatest vertical angle. The optical luminaire casts a combination of doubly reflected and directly transmitted light to produce a light distribution on the ground with intensities that increase as the vertical angle increases to a pre-determined angle. If desired, parts of the reflector members may be replaced by asymmetrical reflector members to provide for asymmetrical light distribution.

Abstract: A hinged base attachable to a foundation and providing hinge means whereby a lighting pole can be tilted, and readily installed, removed and replaced. The base includes a pair of hinge plates, one of which carries a hinge pin and the other of which carries a hinge clevis. The hinge clevis has a channel with a first and a second channel width. The hinge pin has a first and a second pin width. The second widths are larger than the first widths and the first and second pin widths are no larger than the respective first and second channel widths. The pole is attachable to one of the hinge plates. When the other hinge plate is attached to the foundation, the pole can be tilted, and attached or detached thereto by passing the pin through the clevis channel with the first widths aligned. The pole is then tilted upright, and the first widths are no longer aligned. The clevis and pin are thus engaged, and the pole is firmly held to the foundation.

Abstract: A tenon for mounting a lighting fixture to a support. The tenon has a cavity accessible through a removable cover, inside which a wiring splice can be made to join the wiring from the lighting fixture to other electrical circuitry wiring. The splice can be made and inspected at the tenon without removing the lighting fixture from the tenon or from the support. Means is also provided to mount the tenon to the support, and to mount the fixture to the tenon.

Abstract: A luminaire which casts a substantially rectangular pattern of light on a surface. It utilizes a lamp which has an axis of radiation and the property of emitting a disproportionately larger percentage of its luminous flux in an annulus which lies between a substantial bounding region at each end of the lamp. A reflector includes a cavity in which the lamp is placed. The reflector has a cutoff edge that forms an aperture opening from the cavity. Support means mounts the lamp in the cavity above the cutoff edge. Specular reflecting means is provided in the reflector to reflect light which is initially directed above the cutoff edge to the surface as supplementary light to fill in areas where light that is directly emitted through the aperture without reflection does not provide proper illumination to the surface.