Abstract: A holder includes a support member and a reflector coupled to the support member. The reflector comprises a reflecting member with a predetermined focal axis for reflecting a portion of electromagnetic radiation in a preselected direction from an electromagnetic transmissive envelope placed adjacent the reflector. The envelope comprises an elongated source of electromagnetic radiation extending between two points within the envelope and which is displaced from a straight line. Rotatable receiving assemblies mounted to the support member position the envelope adjacent to the reflector with the envelope axis substantially parallel to the focal axis where rotation of the envelope axis around the focal axis compensates for the displacement of the elongated source.

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: An underwater light source includes a sealed beam arc lamp within a wrought and machined, generally cylindrical aluminum housing. The watertight housing has an enlarged diameter at one end to receive the lamp and tapers to a smaller diameter at the other end, which receives the ignitor for the lamp. The larger end is covered with a heat resistant cover glass, and the smaller end is closed. A cylindrical accessory mounting ring is attached to the front end of the housing, and the ring has ventilation openings therein to release heat generated by the lamp.

Abstract: A hand held search light includes a miniaturized electronic control circuit for igniting and operating an arc lamp in the light. Lamp mounting means is disclosed for shock mounting the arc lamp, including means to center and focus the light beam emitted by the search light. The search light is modularized for ease of field maintenance by unskilled personnel.

Abstract: An underwater light source includes a sealed beam arc lamp within a wrought and machined, generally cylindrical aluminum housing. The watertight housing has an enlarged diameter at one end to receive the lamp and tapers to a smaller diameter at the other end, which receives the ignitor for the lamp. The larger end is covered with a heat resistant cover glass, and the smaller end is closed. A cylindrical accessory mounting ring is attached to the front end of the housing, and the ring has ventilation openings therein to release heat generated by the lamp.

Abstract: The trap is used to allow the high flow of ventilation air through an exhaust opening in the housing of a large arc lamp, while at the same time preventing the escape of light through this opening, and most particularly eliminating the escape of ultraviolet light. The trap is box-shaped, and fits over the ventilation openings in the top and bottom of the arc lamp housing, with each side of the box being comprised of a honeycomb panel coated with a flat black high-temperature light-absorbing material, and the top rectangular honeycomb panel having an opaque sheet passing across its top.

Abstract: Containment means for a luminaire that captures hot particles created by the unlikely event of a pressurized lamp rupture is disclosed. In one embodiment, the containment means comprises a mesh interposed between the lamp and a refractor of the luminaire typically formed of an acrylic material. The mesh captures hot particles having a sufficient heat capacity and temperature to create excess heat damage to the refractor.

Abstract: A glare control lamp and reflector assembly and method for glare control which includes a conventional lamp and symmetrical reflector for providing a controlled light beam to a target area. A reflector shield can be positioned on the reflector below the lamp and has the properties of diverging incident light downwardly towards the target area and thus controls reflection upwardly which would produce glare. A glare shield can be positioned on the top of the reflector and extends outwardly from the outer edge of the reflector to block both direct light and reflected light from traveling upwardly and outwardly which would produce glare. In a further combination, a lamp shield can be positioned over a portion of the outermost extending end of the lamp to prevent unreflected light from directly causing glare.

Abstract: Display system includes an illumination system which utilizes a light collector in the form of a non-imaging reflector having a rectangular output aperture, a modulating device in the path of light emitted by the illumination system, and a projection lens. Three such collectors having spectrally tuned lamps therein and using rectangular LCD's as modulating devices can be used in a television projection system.

Abstract: A high intensity fiber optic lighting system is described utilizing an incoherent light source, e.g. a xenon arc lamp having a pair of aligned electrodes positioned on the optic axis of a non-spheric reflector such as a parabolic reflector so that the forward electrode will not obstruct the transmission of light from the light source and reflector. The arc of the lamp is located at the focal point of the reflector. A condensor assembly which can comprise a pair of planoconvex lenses is positioned to receive incident rays from the reflector and direct them to a focal point located at the polished entry end of a bundle of optic fibers composed of a plurality of peripheral fibers surrounding a central fiber, all held together at the focal point of the condensing lens.

Abstract: A glare control lamp and reflector assembly and method for glare control which includes a conventional lamp and symmetrical reflector for providing a controlled light beam to a target area. A reflector shield can be positioned on the reflector below the lamp and has the properties of diverging incident light downwardly towards the target area and thus controls reflection upwardly which would produce glare. A glare shield can be positioned on the top of the reflector and extends outwardly from the outer edge of the reflector to block both direct light and reflected light from traveling upwardly and outwardly which would produce glare. In a further combination, a lamp shield can be positioned over a portion of the outermost extending end of the lamp to prevent unreflected light from directly causing glare. A still further feature and embodiment of the invention includes an arc shield which is positioned directly adjacent to the arc of the arc lamp used with the glare control lamp and reflector assembly.

Abstract: The headlight system has a pair of low beam and a pair of high beam lamps (1a, 1b; 2a, 2b) adapted to be mounted in the front part (3) of an automobile with one lamp of each pair to a respective side of the front part. The lamps each have a flattened concave reflector, a high-pressure discharge arc in a translucent envelope as a compact light source, and a substantially quadrangular lens. The ratio of width and height of the lens is larger than 3 and the height is smaller than 6 cm. The low-beam lamps produce a beam of uniform brightness, large width and length and sharp light darkness transitions, as a result of which the risk of dazzling is small despite a large viewing distance.

Abstract: A portion of a nearly spherical reflector is used to direct the electromagnetic radiation onto a small target. The electromagnetic radiation source is displaced from the optical axis of the reflector to maximize flux density at the target with minimal distortion. The present invention is particularly suited to coupling light from an arc lamp into an optic fiber.

Abstract: The irradiation device comprises a short arc discharge lamp, in which a pair of electrodes are arranged, between which a discharge path extends. An optical conductor is sealed with its first end into the wall of the lamp vessel in such a manner that its light entrance window is arranged laterally of the discharge path and is directed to the discharge path.

Abstract: The present invention provides a spotlight adjusting system for controlling the beam of a spotlight. A ellipsoidal reflector-lamp assembly is movable to a plurality of positions relative to the iris. The diaphragm of the iris is independently adjustable to a plurality of positions so that the light being reflected from the focal area of the reflector assembly can be controlled between passing the full beam received at the iris to a portion of the beam received there. The rear lens is adjustable relative to the iris and the front lens. The system provides mounting structures for both a long throw and a short throw front lens so that the system can be selectively mounted with either a removable long or short focal front lens.

Abstract: An illuminating device for providing a light beam having a substantially uniform cross-sectional flux comprising a light source, an optical conductor, the optical conducting having an inlet and an outlet surface and a curved body portion therebetween, the curved body portion forming at least substantially a portion of a circular ring, optical means for directing light from the light source to the inlet surface of the optical conductor, and means affecting the flux of light arranged transversely and displaceable to the path of the light beam between the light source and the inlet side of the optical conductor whereby the optical conductor provides the uniform flux at the outlet surface.