Abstract: An injection-molded integrated lamp string includes a power line and several lamp bulbs spaced apart on a power line. The lamp bulb comprises a lampshade, a lamp core body, and at least one insulation plastic piece. The lampshade is provided with an insertion portion, and the lamp core body is inserted into the insertion portion and protruded into the lampshade. The lamp core body is provided with at least one LED lamp filament, and both ends of the LED lamp filament are connected with a positive pole conductive wire and a negative pole conductive wire to form a semi-finished lamp bulb. The semi-finished lamp bulb, the positive pole conductive wire, and the negative pole conductive wire are integrally connected with the power line through injection molding. An injection plastic fusion body and the semi-finished lamp bulb are fused integrally through a mold to form a sealing insulation plastic head.

Abstract: A light bulb that is with glass envelope having light transmission of a wavelength only up to 700 nm has an incandescent filament enclosed in a glass envelope that transmits substantially no detectable amount of light of a wave length greater than 700 nanometers.

Abstract: A miniature or subminiature incandescent lamp designed to operate with an energy source of 20 volts or less includes a filament enclosed in a first glass envelope and supported by a pair of metal contact pins. A first glass bead seals the envelope and has a pair of openings through which the metal contact pins penetrate and wherein they are hermetically sealed. A second glass bead of low melting solder glass is larger than the first bead and is sealed below the first bead and extends circumferentially beyond the perimeter of the first bead. A third bead of high melting glass is disposed below the second bead also in sealing relationship with the second bead. The outside perimeter of the third bead is substantially co-extensive with that of the second bead. A second glass envelope is sealed to the outside perimeter of the second bead and is also in abutting relationship with the third bead. The interior of the first envelope is evacuated or contains an inert gas of the type normally used in incandescent lamps.

Abstract: Filaments having a thin exterior tungsten phosphide layer for use in incandescent lamps are made by exposing tungsten filaments to vapors of elemental phosphorous at approximately 675.degree. to 725.degree. C. in an evacuated vacuum furnace. The tungsten phosphide layer protects the filaments from oxidation while the lamps are manufactured, and decomposes to tungsten and phosphorous when the lamp is first energized by current. The resulting elemental phosphorous acts as a gettering agent.

Abstract: A light bulb that is suitable for use in conjunction with night vision equipment has an incandescent filament enclosed in a glass envelope that transmits substantially no detectable amount of light of a wave length greater than 700 nanometers.

Abstract: A subminiature incandescent lamp has a substantially cylindrical base to which a glass envelope enclosing the interior of the lamp is sealed. A pair of contact wires or pins are made of a metal alloy that has substantially the same thermal expansion coefficient as the glass base. The contact pins are embedded and sealed to the glass base in a gas-tight manner, with a glass-to-metal seal. The contact pins extend below the base to provide external connections of the lamp to a power source. The pins also extend into the interior of the lamp, and provide electrical contact to a filament which is mounted between them. A filament support wire is anchored in the glass base at one end thereof and has a loop at its other end in which the mid-section of the filament rests and is mechanically supported.

Abstract: A surface mountable miniature incandescent lamp assembly has an elongated substantially cylindrical glass envelope wherein a filament is contained in contact with metal members having glass-to-metal seals with the glass envelope. A substantial portion of the outer surface of the glass envelope is coated with a light reflective metal coating, with a non-coated elongated window transparent to light being left on the surface. The metal members extend axially to the outside from the envelope and, when mounted to a circuit board provide electric contact for the lamp. At least one of the end members includes a unique surface feature, such as a flat portion of an otherwise cylindrical surface, which is directionally coupled relative to the window of the glass envelope and which acts as a key or indexing surface for mounting the lamp assembly to the receiving surface (circuit board) with the window disposed in the desired direction.

Abstract: A miniature incandescent lamp assembly has an elongated substantially cylindrical glass envelope having a first end and a second end. A substantially cylindrical first metal end member seals the first end of the glass envelope with a seal of substantially cylindrical configuration where the glass of the envelope is in glass-to-metal contact with the first metal end member. A substantially cylindrical second metal end member seals the second end of the glass envelope with another seal of substantially cylindrical configuration. In this seal also, the glass of the envelope is in glass-to-metal contact with the second metal end member. An incandescent filament is disposed between the first and second metal end members within the interior of the glass envelope in electrical contact with the first and second metal end members. Each of the first and second metal end members has a metal cap attached to the outside of the glass envelope, with the metal caps being larger in diameter than the glass envelope.