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4084215 |
Strobe light having reduced electromagnetic radiation
A high intensity strobe light having reduced electromagnetic radiation. A ash tube is mounted on a housing designed to both reduce electromagnetic interference and protect the flash tube from the...
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4081708 |
Incandescent lamp-reflector unit
An incandescent lamp-reflector unit having a metal reflector in which, for increasing the reflecting surface, the neck aperture of the reflector is maintained as small as possible, is not...
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4080545 |
Sodium vapor lamp with emission aperture
Various sodium vapor lamp configurations are disclosed. In one, a sodium vapor discharge tube contains an excess of sodium which is condensed in predetermined locations, as for example dimples. To...
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4079283 |
High wattage incandescent lamp with support for a planar segmented filament
A multihundred watt incandescent projection lamp has a continuous coiled filament in a rectangular area in front of a reflector, the filament comprising folded segments two of which extend...
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4079288 |
Alumina coatings for mercury vapor lamps
An improved mercury vapor lamp construction as described which includes an ultraviolet reflecting underlayer of alumina particles for the phosphor coating to enable reduction in the phosphor...
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4071799 |
Sodium vapor lamp with emission aperture
A low pressure sodium vapor lamp including a sodium vapor discharge tube and a light reflector partially surrounding the discharge tube and defining a light transmission aperture for desired...
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4058749 |
Filament shield for sealed headlamp and mounting method therefor
The two legs of a headlamp filament are welded to a headlamp filament shield to form a subassembly intermediate in the manufacturing process. The rigid nature of the filament/shield subassembly...
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4053809 |
Short-arc discharge lamp with starting device
A short-arc discharge lamp having a pair of electrodes sealed into a bulb, and an external starting device comprising an electrical conductor connected to one of the electrodes and extending to the...
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4041344 |
Ellipsoidal reflector lamp
A blown glass reflector lamp having an ellipsoidal reflector and a clear or lightly frosted face is disclosed.
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4039885 |
Electric incandescent lamp
A low voltage incandescent lamp constructed from a reflector and a cover glass both consisting of pressed glass and which is referred to as a sealed beam type. Through the rear wall extend two...
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4039878 |
Electric reflector lamp
Electric reflector lamps having an ellipse-like curved reflector and a hyperbola-like curved IR reflector having a higher efficiency if not only the foci of both reflectors coincide and the high...
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4025811 |
Liquid-cooled high pressure metal vapor discharge lamp in particular to be used in a method of manufacturing a color television display tube
A liquid-cooled high-pressure metal vapor discharge lamp, to be used in particular in a method of manufacturing a color television display tube in which a cooling jacket is secured around the...
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4021659 |
Projector lamp reflector
The concave reflecting surface of a projector lamp reflector is shaped in the form of a plurality of radial bands and a plurality of concentric circular bands to provide a multiple faceted surface...
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4017758 |
Incandescent lamp with infrared filter
The thermal radiation which is emitted by an electric incandescent lamp is eliminated according to the invention by providing an incandescent lamp with a filter which transmits visible light and...
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4012655 |
Refractory metal oxide reflector coating on lamp envelope
The adherence of an optically reflective coating of refractory metal oxide particles such as ZrO 2 or Al 2 O 3 on a fused silica discharge tube surface is improved severalfold by an adhesion...
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4007396 |
Light emissive diode displays
An LED display is provided with a reflective surface over those parts of the display which do not themselves emit light. This enables a polarizer to be used to enhance the display contrast under...
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4001621 |
Incandescent lamp having a reflecting dome and spheroconical envelope
A high voltage lamp having a silvered dome and reduced dimensions comprising a reflecting dome surface of a spheroconical shape which permits, by double reflection of light rays, an acceptable...
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4001622 |
Directional sources of electromagnetic radiation
A convenient reflecting material is a ceramic fiber felt in which the container is partially embedded, the felt being bleached by the radiation from the source to form a pure white reflector...
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4001628 |
Low-pressure fluorescent discharge device which utilizes both inorganic and organic phosphors
A fluorescent lamp fixture, or the lamp for use in such a fixture, has organic phosphor positioned to intercept a predetermined proportion of the radiations passing through the lamp envelope and to...
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3999095 |
Lamp socket and bulb assembly with side contacts
A lamp socket and bulb assembly includes a socket having a generally rectangularly configured bulb opening and first and second side contacts to stabilize a bulb base against multiplanar reference...
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3997808 |
Mounting for single-ended lamp
A miniature wire lamp is cemented into a ceramic holder such that the filament is precisely located with respect to the holder.
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3995182 |
Low-pressure sodium vapor discharge lamp
The invention relates to a low pressure sodium vapor discharge lamp for generating a directed light beam in which the lamp is provided with a cylindrical discharge tube which is enveloped by a...
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3995192 |
Reprographic fluorescent lamp with improved reflector layer
An improved reflector layer is provided utilizing a titanium dioxide (TiO 2 ) admixture containing up to approximately 15 percent by weight alumina (Al 2 O 3 ) or zirconia (ZrO 2 ). Said reflector...
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3995191 |
Reprographic fluorescent lamp having improved reflector layer
An improved reflector layer is provided utilizing a titanium dioxide (TiO 2 ) admixture containing up to approximately 15 percent by weight magnesia (MgO). Said reflector layer underlies the...
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3993922 |
Arc discharge lamp with integral trigger electrode
A high voltage xenon filled flash tube has a trigger conductor wire embedded in the glass envelope of the tube or in an aluminum reflector on the tube. The wire does not penetrate the glass...
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3991339 |
Light emitting diode with reflector
An electroluminescent semiconductor device having an optical axis includes two cylindrical surface segments spaced from and opposite each other. One of the cylindrical surface segments is the light...
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3988626 |
Magnetically stabilized xenon arc lamp
An improved lamphousing having a magnetically stabilized arc lamp. The arc lamp, such as a high-pressure short-arc xenon lamp, is mounted within the lamphousing such that the arc is positioned at...
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3987326 |
Sealed-beam headlight
A cup-shaped reflector has a larger open end and a smaller open end. A diffuser glass closes off the larger open end. A lamp is comprised of a lamp bulb having a fused, squashed-flat rear portion...
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3987331 |
Ultraviolet emitting fluorescent lamp having internal reflector film
An ultraviolet emitting fluorescent lamp contains an internal reflector film to increase the forward flux of the lamp. The reflector film comprises a layer of zirconia on the inside glass wall of...
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3983513 |
Incandescent lamp having a halogen-containing atmosphere and an integral reflector of non-reactive specular metal
An electric lamp having a sealed-beam or single-ended domed type envelope that contains a tungsten filament and a halogen additive is provided with a specular coating of gold, palladium, platinum,...
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3936686 |
Reflector lamp cooling and containing assemblies
A cooling assembly particularly suitable for use with high brightness light sources requiring compact housing. The assembly comprises an air cooled heat sink and a connecting means being flexible...
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3932780 |
Electric lamp having an envelope with a specular light-reflective coating of oriented aluminum particles
A selected part of the envelope of a fabricated electric lamp is made light-reflecting by spraying it with a coating composition that contains aluminum flakes of such minute size that they...
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3931536 |
Efficiency arc discharge lamp
The arc tube of an electric discharge lamp is surrounded by a reflective filter. The filter selectively reflects arc discharge radiation outside the visible range to which the arc tube wall is...
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3919585 |
Encapsulation for light emitting element providing high on-off contrast
An optical button design for a solid state light emitting element provides high ON-OFF contrast for use in well-lighted ambients. The light emitting element, mounted typically in a parabolic...
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3917939 |
Sealed-beam headlight employing a halogen lamp
A gas-tight vehicular headlight includes a cup-shaped reflector having a smaller open end and a larger open end and a neck portion extending in direction substantially axially of the cup-shaped...
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3914786 |
In-line reflective lead-pair for light-emitting diodes
A plurality of flat, subminiature, reflective in-line lead pairs for light-emitting diodes is contained in a frame. Each lead pair has a flat mounting surface for the diode chip. Although the diode...
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3909607 |
Sealed-beam lamp construction
A lighting unit, especially a sealed beam unit, having a light bulb mounted on a reflector by means of sheet metal legs extending from the lamp press and serving as lead-in conductors for the bulb,...
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3904904 |
Sealed beam headlight
In a sealed beam lamp unit comprising a quartz iodine lamp accommodated in an outer envelope the lamp is provided with a sleeve-shaped cap which is made of a metal strip material and surrounds the...
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3898451 |
Rectangular sealed beam headlamp unit
A type 2 rectangular sealed beam headlamp unit wherein the ferrule bosses are positioned off the geometric center of the reflector to obtain equal ferrule boss heights by compensating for the...
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3886396 |
FLUORESCENT LAMP WITH PROTECTIVE COATING
In a fluorescent lamp which is coated internally with a phosphor, a protective coating of fine alumina particles of sub-micron size is applied over the phosphor layer as a porous discontinuous...
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3879625 |
Zirconia reflector coating on quartz lamp envelope
The adherence of an optically reflective coating of zirconium oxide on a fused silica discharge tube surface is improved severalfold by an intermediate adhesion layer consisting of very fine...
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3862449 |
ION SLEEVE FOR ARC LAMP ELECTRODE
The voltage required to initiate an arc across the electrode gap in a gas-filled arc lamp can be significantly reduced by providing a refractory metal sleeve overhanging the tapered end of one of...
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3852631 |
INCANDESCENT LAMP AND BASE
An electric lamp has a base formed of two half sections made of insulating material. The base is aligned on and attached to the lamp by positioning the half sections on contact prongs, and by...
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3851201 |
LAMP ASSEMBLY
A lamp assembly for use with an arc discharge type lamp employing an external trigger wire to provide the required conductive path allowing illumination voltage to discharge through the tube.
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3851200 |
HEAT AND LIGHT REFLECTIVE COATING ON QUARTZ LAMP
A heat and light reflective coating on a fused silica envelope, as on the ends of a quartz arc tube in a metal halide lamp. The coating comprises a mixture of a reflective metal oxide such as...
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3809942 |
CLOSED REFLECTOR PROVIDED WITH INCANDESCENT LAMP
A closed reflector unit provided with an incandescent lamp in which a transparent face plate is secured to the reflector housing by means of an adhesive. The reflector accommodates a drying agent.
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3808496 |
HIGH INTENSITY ARC LAMP
An improvement to a short arc gas discharge lamp is described. The anode is placed in the base of the lamp and the reflector is supported with reference to the cathode adjacent to the window. This...
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3781582 |
TRIPLE PURPOSE HEAT SHIELD, LIGHT COLLECTOR AND MOUNT SUPPORT FOR A TUNGSTEN-HALOGEN PROJECTION LAMP
A multi-purpose member used in combination with a tungsten-halogen projection lamp, whereby the multi-purpose member reflects radiation back onto the filament of the projection lamp. The...
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3775609 |
LAMP ARRANGEMENT
A directed beam of intense light radiation is produced from a lamp arrangement having a vapor tube light source producing relatively less intense omnidirectional light radiation and having coaxial...
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3767956 |
APERTURE FLUORESCENT LAMP FOR COPYING MACHINES
An aperture fluorescent lamp wherein luminous flux is radiated uniformly along the aperture. In a first embodiment, a variable area aperture is provided. In the second embodiment, a variable area...
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