Abstract: An auxiliary radiation shield for a CRT-type video display terminal includes a generally flat front portion having an at least partially transparent conductive central shield and an opaque frame-like conductive outer shield surrounding the central shield, with the transparent central shield having an area substantially equal to that of the faceplate of the CRT and the opaque outer shield having an area at least equal to that of the transparent central shield, whereby when the radiation shield is supported in front of the CRT with the transparent central shield disposed directly in front of the faceplate, the transparent central shield is in the path of the electrical field that would otherwise extend through the faceplate towards any user in front of the CRT, and the opaque outer shield intersects a substantial portion of the electrical fields that would otherwise extend from the sides and top of the CRT towards that user.

Abstract: At least one amalgam, which is disposed within the lamp envelope of an electrodeless fluorescent lamp to control mercury vapor pressure, is mechanically supported by an amalgam support arrangement in a manner non-invasive to the lamp envelope. The amalgam support arrangement supports one or more amalgams in a "flag" configuration and includes a support member, one end of which is configured for friction-fitting within the exhaust tube opening. The flag may be configured as a wire mesh or spiral-shaped wire, for example. Exemplary configurations for this end of the support member include a U-shape, spiral, zig-zag, or tubular configuration.

Abstract: A plasma display panel with an increased display contrast improves a visibility of the display at low costs. A green light absorbing filter is provided on the outer surface of a substrate on the display surface side and a monochromatic light transmitting filter corresponding to at least one of red and blue fluorescent material layers which face each other through a discharge space is provided on the inner surface of the substrate on the display surface side. The green light absorbing filter is provided on the outer surface of the substrate on the display surface side and at least one of the red and blue fluorescent material layers is formed by a fluorescent material layer colored so as to absorb the light in wavelength regions other than the corresponding monochromatic light.

Abstract: A plasma display panel includes a front plate having a substrate (1), a transparent electrode (4) and a bus electrode (5) disposed on the substrate, a dielectric layer (6) disposed on the electrodes (4,5), and a protective layer (7) disposed on the dielectric layer (6). A color filter is provided either on the substrate (1), between the electrode (5) and a first dielectric layer (6a), between the first dielectric layer (6a) and a second dielectric layer (6b), or between the second dielectric layer (6b) and the protective layer (7). The present invention provides for stable formation of a color filter and eliminates breakage of the electrodes (4,5).

Abstract: An hermetically sealed arc tube 14 has a longitudinal axis 60 and contains therewithin an arc generating and sustaining medium, as is known. The ends of the arc tube 14 are sealed with press-seals 43. The seals comprise a substantially parallelepipodonal structure having oppositely disposed, planar sides 56 and 58. A molybdenum foil 50 is sealed in each of the press-seals and is substantially centrally located between the planar sides 56 and 58. An in-lead 52 is secured as by welding to an end of foil 50 and extends outwardly of the arc tube for electrical connection to a source and an electrode 46 is attached to the other end of foil 50 and projects into the arc chamber. A first rod-relief member 62 in the form of a projecting boss 64 is formed on one of the planar sides, for example, 58, and a second rod-relief member 66 in the form of a depression 68 is formed on the other of the planar sides, in this instance side 56.

Abstract: A discharge panel (2) includes substrates (3, 8) bonded together with a gap and ionizable gas sealed within the gap. Discharge electrodes including an anode (9) and a cathode (9a) having a strip pattern are formed on the lower substrate (8) so as to divide the gap into discharge channels (12). A barrier rib (10) is disposed over each anode (9) covering one side wall of the anode (9) so that a portion is exposed to the ionizable gas in the discharge channel (12). The cathodes (9a) are free of the barrier ribs (10) and are exposed to the ionizable gas in the discharge channel (12). The elimination of barrier ribs (10) from the cathodes (9a) increases the effective display region. In an alternate embodiment, the barrier ribs (10), the anodes (9) and a cathodes (9a) are of the same width and same pitch, and provide for a simplification in the manufacturing process.

Abstract: An electro magnetic controlled platinum infrared filament ignitor has a screw nut, a top pin, an electro magnetic induction coil, a magnetic permeable bolt, a metal wrapped cylinder and a platinum filament. Heat produced by current flowing in the platinum filament actuates the ignitor. The magnetic force set up by the energized coil, and spring force drives the adjustable top pin to the position of the platinum filament. The ignitor is simple in construction with endurable long life and efficient for ignition in most gas turbines, reciprocating engines and gas burners.

Abstract: A field emission device (100, 200) includes an anode (190); a substrate (110); a plurality of spaced apart cathodes (120); a dielectric layer (124) disposed on the cathodes (120); a plurality of spacer pads (130, 230) disposed on the substrate (110) between adjacent cathodes (120) and including a spacer contact layer (142, 185) that defines the surfaces of the spacer pads (130, 230); a spacer (150) having a first edge (157), a second edge (155), and a conductive layer (152) disposed on the second edge (155), the first edge (157) contacting the anode (190), the conductive layer (152) contacting the spacer contact layer (142, 185) at the spacer pads (130, 230); and an electron emitter (170) disposed within the dielectric layer (124) and spaced apart from the second edge (155) of the spacer (150).

Abstract: A cathode ray tube includes a vacuum envelope having a face plate (1), a continuous phosphor screen (7) formed on the inner surface of the face plate (1), the phosphor screen (7) including a plurality of scanning regions (R1-R15) disposed in rows and column, and a rear plate facing the phosphor screen (7), a scanning arrangement including a plurality of electron guns (15) attached to the rear plate, for individually emitting electron beams toward the phosphor screen, and deflection yokes (16) coupled to corresponding electron guns (15) for deflecting the electron beams. A control section (30) controls the electron guns (15) and the yokes (16) so that one row of the scanning regions is scanned simultaneously while other rows are suppressed.

Abstract: A projection lamp includes a metal halide discharge lamp (1) with a lightansparent discharge vessel (2) in which two electrodes (3) stand opposite one another, which are joined with current leads (5) led to the outside, whereby the discharge vessel contains an ionizable filling including mercury, at least one noble gas, at least one halogen, one rare-earth metal (RE) as well as another metal, niobium, for the formation of metal halides. The addition of metallic niobium provides the lamp with good color reproduction and good arc stability.

Abstract: A cambered shape of an external negative electrode (11) of an internal combustion engine's spark plug so that a spark bridging the plug's spark gap (17) impinges first at the base region (14) and travels outward and around to initiate burn of almost 100% of available fuel. The cambered shape culminates with an end section (16) that is 1/4 of a sphere and has symmetry to the radial edge of a center electrode (13).

Abstract: A plasma display panel has a matrix of plural first straight electrodes and plural straight second electrodes, respectively crossing each other, and a unit color element located at a crossing point of the first and second electrodes. A plurality of separator walls are spaced apart from each other and extend along the second electrodes, dividing a discharge space into a plurality of channels extending along respective, second electrodes. The separator walls undulate with a fixed periodicity so as to define alternating wide and narrow portions aligned along each channel and the respective first electrode. A fluorescent material is coated in each channel, the colors emitted from the fluorescent material being identical in each channel. A gas discharge takes place selectively at the wide portions in cooperation with the respective first and second electrodes.

Abstract: An automatic exposure control device of a video camera for recording and tie-recording with proper exposure level including an iris mechanism having a two-fin type iris rotated by a ring portion of which the rotational speed is in proportion to an iris control value while an electric battery is switched on and a photograph button is pushed. Recording is actually started after a predetermined period is passed following the pushing of the photograph button. A photometric integrating circuit outputs an iris integrating value from a brightness element of a photograph signal. A microcomputer determines the iris control value from the iris integrating value. During the predetermined period after the pushing of the photograph button, the iris control value is increased and output for every field in order to control the iris with high speed.

Abstract: A lighting unit includes a discharge vessel having a wall provided with a first luminescent layer, a gas fill consisting essentially of neon at a pressure less than 30 mbar, and a means for providing a constant DC current for exciting the fill in the discharge vessel to emit UV light for exciting the luminescent layer. DC operation offers substantially higher luminous flux over AC operation. The lighting unit may further include a housing having a reflective surface, a second luminescent layer, and a filter incorporated within the discharge vessel.

Abstract: A multi-layer resistive carbon film field emitter device for cold cathode field emission applications. The multi-layered film of the present invention consists of at least two layers of a conductive carbon material, preferably amorphous-tetrahedrally coordinated carbon, where the resistivities of adjacent layers differ. For electron emission from the surface, the preferred structure can be a top layer having a lower resistivity than the bottom layer. For edge emitting structures, the preferred structure of the film can be a plurality of carbon layers, where adjacent layers have different resistivities. Through selection of deposition conditions, including the energy of the depositing carbon species, the presence or absence of certain elements such as H, N, inert gases or boron, carbon layers having desired resistivities can be produced.

Abstract: A display (300, 400) includes a face plate (40, 60) having an inner surface, a back plate (44, 64) having an inner surface opposing the inner surface of the face plate (40, 60), an electron source (48, 68) opposing the inner surface of the face plate (40, 60), and a phosphor (49, 72, 70) disposed on the face plate (40, 60). The phosphor (49, 72, 70) includes an electron-excitable UV-emitting material (52, 72) and a UV-excitable light-emitting phosphor (50, 70). The UV-excitable light-emitting phosphor (50, 70) is disposed to receive UV radiation emitted by the electron-excitable UV-emitting material (52, 72). The electron-excitable UV-emitting material (52, 72) includes a sol-gel product formed using sol-gel techniques.

Abstract: A deflection yoke includes a cone-shaped separator, a horizontal deflection coil mounted on an inner surface of the separator, a vertical deflection coil wound on a core mounted on an outer surface of the separator, a magnetic corrector for correcting distortion of a magnetic field formed by the horizontal and vertical deflection coils, and a pivotally adjustable support connecting the corrector to the separator so that the corrector pivots about an axis perpendicular to the central axis of the separator, wherein errors in landing of an electron beam on a screen of a cathode ray tube can be corrected.

Abstract: A color cathode ray tube includes an in-line electron gun having a main lens with recessed apertures. The main lens is formed by two electrodes. These electrodes have outer edges and recessed apertures which allow passage of three in-line electron beams and which are arranged at a distance d1 and d2, respectively, from the outer edges. The outermost apertures are asymmetric. The difference d1-d2 and the asymmetry of the outermost apertures is such that both the beam displacement and the core haze asymmetry are minimal.

Abstract: An in-line electron gun for a color CRT includes a static electrode (39') applied with a static voltage, and a dynamic electrode (40') applied with a dynamic voltage. A side of the static electrode (39') facing toward the dynamic electrode (40') is formed with a common opening for the electron beams, and a plain electrode (21) having three apertures (20) is positioned inside the static electrode (39'). The dynamic electrode (40') has a pair of lens reinforcement partitions (38) having round horizontal partitions (41) disposed in a vicinity of the apertures (20) and has a curvature similar to that of the apertures (20), and linear partitions (42) formed integral with the round partitions (41) to provide a static facing side of the dynamic electrode (40') with a quadrupole effect. The in-line electron gun reduces the voltage difference of the peak-to-peak voltage of the dynamic voltage reducing the production cost of the dynamic voltage supply.

Abstract: In a socket for discharge lamps 10, having a tubular enclosure 22, a female terminal 23 is located in the center of the socket. A circular elastic sleeve 24 is mounted to the outside surface of the tubular enclosure. On the inside surface of the elastic sleeve 24, grooves 31 are formed fitting over the ribs 30 made on the outside surface of the tubular enclosure 22. A number of steps extending in a circumferential direction are formed on the surface 51, which comes in contact with the discharge lamp 100. The discharge lamp 100 can be easily removed for the replacement while the elastic sleeve 24 remains attached to the socket 10. The elastic sleeve 24 makes it possible to secure tight sealing after the discharge lamp has been replaced.