Abstract: A reflector for a lamp has a form which in a section containing the optical axis 1 lies between two curves enveloping the reflector section curve R. The enveloping curves may be two ellipses, two parabolas or an ellipse and a parabola.

Abstract: An novel lampshade and process of its manufacture are disclosed. The lampshade is characterized by an understated elegant look. The lampshade looks as if stretched on the outside, and features a contoured lining. Essentially, the lampshade comprises a cover that serves as a rigid shell that defines upper and lower perimeters. The lining is secured at the perimeters to the shell and is separated therefrom by a form.

Abstract: A headlamp for a motor vehicle comprises a power unit including an inverter, a starting circuit connected to the inverter, an electric discharge lamp bulb connected to the starting circuit, and a shell for holding the starting circuit and the electric discharge lamp bulb. A lens and a cap are fixedly mounted to the shell at the front and rear open ends thereof, respectively. The shell and the cap are coated with a metal film to provide shielding from radio noise due to high frequency pulses.

Abstract: An elongated, lighted message and clearance lighting assembly for mounting into the conventional generally horizontal indentation adjacent the roof line of a cargo vehicle container body. A pair of elongated fiber-optic cables are individually encased in a correspondingly elongated enclosure to illuminate the interior of said enclosure and pass light through an outward translucent face of the enclosure to present a graphic message provided on a translucent strip inside the enclosure. The fiber-optic cables are constructed to propagate light flux longitudinally and also radially outward. A portion of the translucent face of the enclosure may be colored appropriately to provide the legally required clearance lighting function.

Abstract: A self-illuminated reflector useful as a nighttime warning marker has a retroreflective surface for redirecting external light back to its source, and includes miniature low power lamps which sufficiently illuminate the retroreflective surface to provide a highly visible warning marker in the absence of any external light directed at the surface. The self-illuminated reflector is comprised of a light source embedded within the optical material of a retroreflector which is directly coupled to a lens to provide a contiguous optical path between the retroreflector and the lens. In one embodiment, four light-emitting diodes are embedded in a three-inch diameter retroreflector which is covered by a clear, transparent lens to provide a lightweight, inexpensive warning marker.

Abstract: A headlight for a motor vehicle incorporation devices for measuring the amount of deviation of the beam of light produced thereby from the desired axis. The first deviation measuring device, which is used for measuring the amount of deviation of the beam in the horizontal direction, includes calibrated rod extending between either the reflector and the headlight body, in the case of a movable reflector type headlight, or between the vehicle body and the headlight body, in the case of a movable unit type headlight. The second deviation measuring device, which is used for measuring the amount of deviation in the vertical direction, includes a level secured to the reflector or headlight body.

Abstract: There is provided a flexible, thin, rectangular, chemiluminescent device comprised of a back sheet of a laminated metal foil having heat sealed thereto at its edges a bi-component front sheet, the first component of which is a laminated metal foil and the second component of which is a transparent or translucent polyolefin sheet, said first and second components being heat sealed to each other at their adjacent latitudinal edge, from about 20% to about 50% of the surface area of said front sheet being comprised of said first component; temporary separation means positioned so as to divide the interior area of said device into two compartments, one under each of said components, the compartment under said second component having positioned therein an absorbent material containing a solvent solution of an oxalate and, optionally, a fluorescer, and the compartment under said first component containing an activator solution.

Abstract: A miniature two or three cell flashlight as disclosed to comprise a barrel, a tailcap, a head assembly, and means for holding a miniature lamp bulb and for providing interruptible electrical coupling to dry cell batteries retained within the barrel and having a recharger for charging the chargeable batteries via conductors in the tailcap.

Abstract: A lamp assembly includes a lamp capsule, a reflector, an electrical connector and a lens. The lamp capsule includes a lamp envelope having a base portion, and the reflector includes an opening for receiving the base portion of the lamp envelope. The reflector is fabricated of a resilient material such as a high temperature thermoplastic or thermosetting plastic. The base portion of the lamp capsule and the reflector include lamp interlocking elements which mechanically lock the lamp capsule in the reflector. The lamp interlocking elements preferably position the center of light output of the lamp capsule at the focal point of the reflector. The connector and a neck portion of the reflector include connector interlocking elements which mechanically lock the connector to the reflector. The lens and the outer rim of the reflector include integral lens interconnecting elements which mechanically lock and position the lens on the reflector.

Abstract: A vehicular headlight having an inner lens and a hood, which is painted to block light, integrally made of a light-transmissible resin so that no opening is formed between the inner lens and the hood. As a result, no light can leak through such an opening, and the adjustment gap between the inner lens and reflector cannot be seen through the opening. Since the inner lens and the hood are constituted by a single component, the number of components of the headlight is reduced to decrease the number of steps of assembly thereof.

Abstract: A composite filter advantageously employable for dark field observation systems which comprises a dyed organic resin layer provided on a dyed glass plate. The organic resin layer and the glass plate in combination absorb light of a radiation spectrum in the region of longer than 600 nm under the condition that the transmission of light at 650 nm is defined to a level of 1.times.10.sup.-4 % to 5% and the transmission of light at 800 nm is defined to a level of lower than 2.times.10.sup.-5 %. Another dyed glass plate which shows an absorption spectrum having absorption peaks in regions of 480-535 nm and 560-600 nm may be incorporated into the composite filter. The composite filter can be introduced into or provided to an illuminating device.

Abstract: A headlamp apparatus including an adjustable headband, a lamp assembly, and rechargeable batteries in a remote belt attachable battery housing. The headband includes adjustable circumferal and longitudinal band members, with both band members structured for a wide range of independent size adjustments through the use of hook and loop type fasteners. The lamp assembly is comprised of a telescoping tubular housing containing a focusable lamp, reflector, and lens arrangement. The lamp assembly is adjustably affixed to the headband with a double ball and socket universal fitting which allows a wide range of adjustment of the direction of the emitted light. Electrical conductors connecting the lamp assembly to the battery housing are located over the top of the user's head and down the back, positioned out of the user's work area. The battery housing is sized for placement into a clothing pocket or can be releasably affixed to the belt of the wearer with an attachment clip.

Abstract: A vehicular lamp which provided with a lamp body, an elliptic reflector accommodated in the lamp body, a light source positioned within a first focal area of the elliptic reflector, a projection lens positioned so that a focal point of which positions within a second focal area of the reflector, the light passing through the projection lens being substantially parallel, and an outer cover provided over the projection lens. An inner side of the lamp body is dark colored and the outer cover is made transparent.

Abstract: A device and method for converting a fluorescent down-light into an up-light or combined up-down-light involves suspending a luminaire body from a ceiling below a pre-existing down-light. Ballast lead extenders connect lamp holders in the luminaire body to the lamp holders in the pre-existing down-light. A reflective panel is inserted above the luminaire body serving the dual purposes of hiding the down-light and downwardly reflecting the light which emanantes from the luminaire body.

Abstract: A head-lamp having an adjuster construction comprising a pivot portion and an adjusting screw portion, in which a ball joint is provided for at least one of said portions, a part of a carrying surface of the ball joint being formed of a soft elastic member which extends into the region of the ball joint.

Abstract: The present invention relates to an auxiliary stop lamp which is mounted internally of a rear window of a vehicle so as to illuminate the back of the vehicle, characterized in that the auxiliary stop lamp comprises a cylindrical housing in teh form of a transparent flexible member having opening at both ends thereof, side lids mounted on the respective openings of the housing, said side lids each having a base plate mounting portion on the inner surface side of the housing, and an LED mounting base plate formed from a flexible member mounted on the base plate mounting portion of the side lid.

Abstract: An all-weather, stable emergency signal lamp comprising a two-piece case, a rechargeable battery, a strobe light assembly and a dome lens.

Abstract: A dipstick locator device is mounted inside the engine compartment of a motor vehicle, and more particularly to the dipstick assembly. The device includes a light source which is activated at least when the hood is lifted to enable a person to locate the dipstick even under poor lighting conditions.

Abstract: An apparatus is provided for a lighthead which allows the lamp to be serviced without removing any components of the lighthead. The invention includes a lamp socket connected to the handle of the lighthead. The handle can be displaced from an operative position to expose the lamp for maintenance while remaining attached to the lighthead to prevent damage or loss of the components.

Abstract: A fiber optics illuminator includes a source of illumination on an optical axis and an optical element coaxially disposed on the optical axis, forming an image of the illumination source at an image plane. A housing encloses the source of illumination, the optical element and the image plane. A thermal control bushing is disposed on the optical axis at an exit aperture in the housing and includes an elongated, generally cylindrical glass rod coaxially disposed on the optical axis, having a first end at the image plane of the optical element, receiving illumination and heat, and a second end external to the housing. The thermal control bushing includes a means for dissipating heat from the glass rod by radiation outside the housing and by convection aided by a ventilating fan. An elongated fiber optics light guide has a light receiving end coaxially disposed adjacent to the second end of the glass rod, and a remote light-emitting end.