Abstract: The underwater illumination apparatus has a high pressure sodium arc lamp sealed to a stainless steel base with a flexible, radiation-resistant potting material to provide both a watertight seal and a shock-absorbing connection. A wet-mateable base connector is attached to the base to permit connection to a lower cable. A transparent, impact-resistant cover is formed around the base and the arc lamp. The cover has holes through which water can flow in and out to conduct heat away from the arc lamp. The combination of the above elements creates a modular unit which is replaced as a whole when the arc lamp burns out. The lower cable which provides power to the arc lamp is attached at its other end to a ballast power supply which is hermetically sealed in a stainless steel housing. Wet mateable connectors are attached at the inlet and outlet of the ballast power supply to attach to the lower cable and to the upper cable connection to a 120 VAC source.

Abstract: The improved bollard luminaire has an upwardly directed, elliptical main reflector and a lamp "nested" within such reflector and positioned at or near its lower focal point. An upper cone-shaped reflector receives light from the main reflector and directs it laterally through a transparent lens element. Such element provides a 360.degree. lateral light opening unobstructed by wiring, support posts or the like. Light reflected through such opening is relatively sharply focused along an axis about 70.degree. from vertical. Unreflected light from the lamp which "misses" both reflectors also provides a degree of "uplighting," often found useful for aesthetic purposes.

Abstract: A thin, efficient and uniform illuminator for large areas comprises a plastic wedge of a series of plastic wedges applied to or formed integrally with a back surface of an area to be illuminated. Light is collected and concentrated from a high efficiency light source. The concentrated light is focused as an input to one or more light guides. The light guides may be optical fibers. The light guides or fibers are fused or mated in some other way to an edge or edges of an optically clear plastic wedge or wedges. The wedge shape increases the angle of the internal reflections of the edge coupled light per unit distance and intercepts more of the light as the wedge gets thinner. To further enhance the uniformity of the illuminating light, light scattering centers may be added to the surface or volume of the wedge. The number of scattering centers over the illuminating surface of the wedge or within the volume of the wedge may be increased along the distance moving away from the light source.

Abstract: This invention relates to a retractable device for a desk lamp and in particular to one which including a tubular cylindrical casing having an end for connecting with an appropriate position of the desk lamp, a piston rod provided with an outer end for connecting with an appropriate position of the desk lamp and extending into the cylindrical casing, an annular ring fixedly mounted within the cylindrical casing for receiving a first rubber ring, a cap engaged with the other end of the tubular cylindrical casing, a plug mounted at the other end of the tubular cylindrical casing, and a second rubber ring disposed between the cap and the plug.

Abstract: A decorative lighting and rotating display fixture kit comprises a support frame for mounting the fixture to a ceiling fan, a shroud concealing the support frame, and at least one electrical light socket mounted within the shroud. A motor is mounted to extend below the support frame shroud, is concealed by a decorative motor shroud, and supports a decorative display or carousel for rotation about a vertical axis. Electrical wiring connects the light socket and the motor to the ceiling fan wiring. A switch attached to the support frame and connected to the electrical wiring controls electrical energy to the fixture kit. The fixture kit may be mounted directly to the ceiling or other wiring location as a separate fixture, without the ceiling fan.

Abstract: A luminaire providing indirect light from a tubular lamp-fixture assembly (55) which is mounted on a wall (65) and covered by a shield (25) which reflects light (3,4,7) upwardly toward a spreader (15) which substantially spreads light (2-7) out from a square corner and broadly over a ceiling (75) mounted under. The spreader and the shield both have quarter-cylindrically-shaped middle portions (10,20) over most of their lengths. The spreader has quarter-trumpet-shaped end-portions (14,16). The shield has quarter-bowl-shaped end-portions (24,26). The combination of the shield and the spreader also disperses light (8,9) substantially away from the sides of the luminaire. Both the shield and the spreader are made light-weight, flexible, and durable. A bracket (83) supports the shield away from the wall (65) mounted over, allowing an accenting strip of light (1) to surround the sides and lower edge of the shield. An adjustable bracket assembly (33,43,130) permits the parallel alignment of the shield with the wall.

Abstract: There is disclosed a space lighting fitting for strip lighting such as fluorescent tubes comprising an extrusion comprising an open, reflector portion which houses lamp holder means for holding a lamp therein and a containment portion housing electrical components associated with the electricity supply to the lamp holder means.

Abstract: A surgical lighting system provides remote control of surgical lights. The parameters (for example, illumination levels and beam direction) of the lights are remotely controlled, thereby eliminating the need for surgical personnel to manipulate the lights. The individual light instruments that are employed with the system are enclosed in the housing that isolates the instruments from the surgical suite, thereby avoiding contamination. A sequence of lighting parameters as required for a particular surgical procedure may be pre-recorded and played back by the processor that controls the light instrument parameters.

Abstract: An improved signal lamp for a vehicle is composed of a plurality of dome type light emitting diodes and a plurality of reflective mirrors arranged corresponding to the light emitting diodes. Each of the reflective mirrors is designed in the shape of a rotational parabolic surface whose focus is located at the position coincident to the foremost end of the corresponding light emitting diode or at the position in the vicinity of the foremost end of the corresponding light emitting diode. The rotational parabolic surface is configured such that a virtual light source appearing on each light emitting diode is located at the position coincident with the focus of the corresponding reflective mirror or at the position in the vicinity of the focus of the corresponding reflective mirror.

Abstract: A light bar for mounting on an emergency vehicle to provide warning light signals, comprising at least two vertically spaced lighting layers, each layer having at least one light source, the light sources on each layer cooperating to provide a transient high intensity warning light signal 360.degree. around the light bar. The light bar may include oscillating light sources. A casing encloses the light sources, and a divider separates the light sources of at least two of the layers and divides the casing into at least two vertically spaced layers. The divider includes means for permitting air convection between the layers while blocking direct light transmission from the light sources on one layer to the other layer. The casing comprises upper and lower shell members which interfit to horizontally compress a gasket to seal the casing without screws or other fasteners penetrating the shells.

Abstract: An electrical component mounting system includes a substrate having a foil laminate on one side configured to provide a pair of spaced conductors extending adjacent a socket aperture formed through the substrate. An electrical component includes a socket that fits into the socket aperture to engage the foil for providing activating power to the component directly through the foil covered substrate.

Abstract: A headlamp includes an adjusting mechanism for adjusting a reflector (3) of the headlamp about at least one axis (8). The adjusting mechanism comprises a threaded nut (9) attached to the reflector and a threaded shaft (12) which is rotatably mounted on a stationary part (1) of the headlamp. Adjustment of the reflector is displayed by a scale-like indicator mechanism which includes a fixed part (24) and an adjustable part (15). According to the invention, the adjustable part is formed of an idling toothed wheel (15) that meshes with a pinion (21) of the threaded shaft but which can be disengaged therefrom by axial displacement of the toothed wheel.

Abstract: A flux containment device entraps an unneeded portion of the radiated ene emitted by a reference source lamp so that a determinable amount of radiation is projected to electro-optical sensors for calibration purposes. A double-walled, concentric can-shaped enclosure, provided with a nonreflective coating on its inside surfaces, has an aligned calibration optical axis aperture for projecting the determinable amount of radiation and a diametrically opposed light trap opening to accommodate a light trap that eliminates unwanted reflections. The double walls are held apart by nonconductive spacers to avoid unwanted heat transfer. A fan forces cooling air through an appropriately located vent hole in the can-shaped enclosure to avoid direct impingement on the lamp.

Abstract: An improved tool caddy with adjustable light boom that is readily movable on a supporting surface and includes a central support member having trays for storing a plurality of tools, a plurality of caster wheels attached to one of the trays, an extension member associated with the support member in a telescoping relationship, a light boom pivotally connected to one end of the extension member, and an adjustable strut for changing and semi-permanently fixing the position of the light boom with respect to the extension member.

Abstract: The present invention is directed to illumination structures useful in display systems for projection video and television devices performing with high efficiency and good color rendition. Such illumination sources include a light source having an inner and outer envelope with plane mirrors within the outer envelope to direct reflected light, a light source providing randomly polarized light with polarizing structure for passing a desired polarization of the polarized light, and an arc lamp having at least two arcs for supplying uniform illumination in two dimensions. These illuminating structures enable significantly improved illumination in the appropriate projection video and television systems.

Abstract: The invention relates to a wide-area lamp in which luminescent semiconductor elements in a wide-area spread are connected to one another by a conducting path structure and the individual luminescent semiconductor elements are surrounded by casing elements. The invention provides for the conducting path structure between the individual casing elements to be designed movable such that the lamp can be curved to any shape required. The casing elements are here surrounded by parabolic reflectors, with the conducting path structure with the semiconductor elements being so arranged that one semiconductor element is in the focal point of each reflector.

Abstract: A vehicle headlamp assembly for producing a passing beam pattern has a paraboloidal or divergent ellipsoidal reflector with a focus. A bulb filament is disposed completely behind the focus and has no light shield interposed between the filament and the reflector so that a divergent light beam is reflected off the reflector. A lens element has prism portions (A to C) which refract light passing therethrough downwardly to produce the required light beam pattern .

Abstract: A daytime running light system employs level sensing comparators to effect reduced illuminating the high beam filaments of headlamps of a vehicle and short circuit protection to the circuit as well as to a high beam indicator circuit which only operates when the high beam filaments operate at full intensity.

Abstract: A method of reducing the resistance of a sleeping mammal to arising at a preselected wake up time by exposing the mammal to at least one source of artificial light for a period of exposure of at least about 0.5 hour and no longer than about 8 hours before the preselected wake up time. The intensity of the artificial light may increase during the period of exposure. An apparatus for carrying out the method comprises a normally deactuated source of artificial light capable of illuminating a mammal, comprising a plurality of electric lamps, a control device, such as a timer, for signalling the commencement of a period of exposure preceding the mammal's preselected wake up time and an increase in illumination intensity during the period of exposure, after its commencement. The apparatus further features circuitry and a power supply, responsive to the control device, for actuating one lamp in response to the commencement signal, and for actuating additional lamps later during the period of exposure.

Abstract: An apparatus for mounting an electrical fixture to a support member includes a fastening member which is pivotally mounted within the housing of the fixture and extends through the housing. Deployment structure, such as a spring, causes a portion of the fastening member located outside of the housing to extend over the support member. Structure within the housing allows movement of the fastening member into contact with the support member to secure the fixture to the support member. Preferably, the mounting system includes a plurality of fastening members which can be moved into contact with the support member.