115 results about "Cathode ray tube" patented technology

The invention relates to a backlight unit for liquid crystal displays, etc.; and its object is to provide a backlight unit not involving the problem that the emitted light leaks out of the optical waveguide, even when the space around the cold-cathode tubes in the light source unit for it is filled with a liquid of which the refractive index is nearly the same as that of the glass material that forms the outer wall of the cold-cathode tubes. The backlight unit comprises a housing 6 which houses cold-cathode tubes 2, 4 therein and of which the inner surface is coated with a light reflector 10; a transparent liquid filled in the housing 6; and an optical waveguide 1 made of a transparent substance and having a light-emitting surface S. The reflective surface of the light reflector 10 has a cross-section profile of X-T-U-V-W-Y, on which the light emitted by the cold-cathode tubes 2, 4 is reflected, and the thus-reflected light is led to the light-emitting surface S of the optical waveguide 1 at an incident angle not smaller than the critical angle to the surface S.

A glass composition improves the bio-solubility (solubility to physiological salt water), and is suitable for manufacturing inorganic fiber and a molded product of such inorganic fiber. The glass composition to be used for manufacturing inorganic fiber is characterized by containing SiO2 by 52 to 72 wt %, Al2O3 by less than 3 wt %, MgO by 0 to 7 wt %, CaO by 7.5 to 9.5 wt %, B2O3 by 0 to 12 wt, BaO by 0 to 4 wt %, SrO by 0 to 3.5 wt %, Na2O by 10 to 20.5 wt %, K2O by 0.5 to 4.0 wt % and P2O5 by 0 to 5 wt %. The raw material of the glass composition contains cathode ray tube glass and / or liquid crystal glass by 0 to 50 wt %.

The present invention provides a diffusing sheet, a surface light source device, and a transmission type display, that can attain uniform illumination so that the brightness of light on the display screen appears uniform regardless of the position from which the display screen is observed. A transmission type display 10 comprises an LCD panel 11, and a surface light source device 16 for illuminating the LCD panel 11 from its rear. The surface light source device 16 includes a plurality of cathode ray tubes 13 that are arranged in parallel. A diffusing sheet 14 and a convergent sheet 12 are placed between the cathode ray tubes 13 and the LCD panel 11 in the surface light source device 16. The diffusing sheet 14 includes, on its light-emerging side surface, a diffusion lens array 141. The diffusion lens array 141 has a plurality of unit lenses (the diffusion lens array 141 is formed by regularly arranged unit lens groups each constituted by arranging a lower unit lens 141a and a higher unit lens 141b), each unit lens being in a shape equivalent to a part of an elliptic cylinder having an elliptical section. The convergent sheet 12 has a plurality of unit lenses 121 having almost trapezoidal cross sections, formed on its surface on the cathode ray tubes 13 side. It is therefore possible to attain uniform illumination by diffusing light from the cathode ray tubes 13 in the surface light source device 16. At the same time, it is possible to converge the light serving as backlight to enhance optical efficiency.

An electrostatic ion propulsion engine for satellites and spacecraft is equipped with an electron source for neutralizing the propellant gas ion beam or jet emitted by the engine. The electron source includes an anode housing, a hollow cathode tube with gas flowing therethrough, a cathode element at the outlet end of the cathode tube within the interior space of the anode housing, and a pin- or rod-shaped auxiliary electrode arranged along the lengthwise axis in the hollow cathode tube. An ignition pulse is applied to the auxiliary electrode relative to the cathode tube, which causes a pulse discharge in the cathode tube, and in turn ignites the gas discharge between the anode and the cathode which generates the electron current.

The invention provides a novel hollow cathode, relates to a hollow cathode for improving discharge performance of a low-current hollow cathode employing an emitter material as a top hole material instead of tungsten and aims at solving the problems of serious local overheat phenomenon and relatively high power consumption of a tungsten material top plate area caused by the throttling effect when an existing low-current hollow cathode works. The novel hollow cathode comprises a heat shield, a heater, a holding electrode, an emitter, a cathode tube and a cathode top plate, wherein the heat shield, the heater, the cathode tube and the emitter are arranged in the holding electrode from the inside to the outside; the emitter is arranged on the inner wall of the cathode tube; the cathode top plate is arranged at the bottom part of the cathode tube; a through hole is formed in the middle part of the cathode top plate; and the material of the cathode top plate is the same as that of the emitter. The novel hollow cathode is applied to an electric thruster.

The invention discloses a focusing type cold cathode X-ray tube which comprises a field emission cold cathode, a lamp filament gate electrode formed by lamp filaments, an anode, an X-ray tube case and a ray emergence window, wherein the field emission cold cathode and the anode are respectively arranged at two ends inside the X-ray tube case and are respectively extracted to the outside of the X-ray tube case through a cathode extraction electrode and an anode extraction electrode; the lamp filament gate electrode is arranged between the field emission cold cathode and the anode; two side surfaces of the lamp filament gate electrode are extracted to the outside of the X-ray tube case through the two extraction electrodes; the anode is provided with a slope surface for generating an X-ray by electron bombardment; and the ray emergence window is arranged at the position on the side surface of the e X-ray tube case, which is just opposite to the slope surface. Compared with the general field emission cold cathode X-ray tube, the focusing type cold cathode X-ray tube can be used for effectively carrying out electron bombardment on the anode to degass, improving the vacuum degree in the X-ray tube, simultaneously focusing electron beams, improving the performance of the X-ray tube and prolonging the service life of the X-ray tube.

The invention relates to a graded efficient electric precipitator, comprising a cathode ray, a baffling plate type anode plate with a dust collection ditch; wherein the cathode ray is a tube with two symmetrical edges, a transverse section of each anode plate is folded into four folds to form two concave zones and two convex zones, concave zones of the two adjacent rows of anode plates are corresponding to concave zones of the two adjacent rows of anode plates and convex zones of the two adjacent rows of anode plates are corresponding to convex zones of the two adjacent rows of anode plates; symmetric center points of the two concave zones of the two adjacent rows of the anode plates are vertically arranged on the cathode ray, the two symmetrical edges of the cathode ray are respectively faced the concave zones of the two adjacent anode plates, multiple 'Y'-shaped bent splinters are welded on the two symmetrical edges of the cathode ray from top to bottom at uniform spacing, two bent cuspidal points at the head part of the 'Y'-shaped bent splinters are respectively faced with the two board surfaces of the concave zones of the anode plates. In the invention, the two bent cuspidal points at the head part of the 'Y'-shaped bent splinters are respectively faced with the anode board surfaces, so that critical coronal current and breakdown voltage of the cathode ray is increased, which in turn improves efficiency of dust collection; in addition, height of the two bent cuspidal points of the 'Y'-shaped bent splinters can be adjusted, requirements on dust collection of different power can be met and the application range is wide.

The invention provides a work circuit achieving stable parallel connection of multiple hollow cathodes and a work method of the work circuit, and belongs to the technical field that plasma thrusts self-support hollow cathodes. The work circuit and the work method of the circuit solve the problem that when the hollow cathodes are connected in parallel, ignition is difficult, currents are nonuniform seriously during stable operation, and accordingly one of the hollow cathodes is prone to going out. The work circuit comprises N units, each unit comprises one hollow cathode, a contact electrode power supply, a diode, a heating power supply and a slide rheostat R1, a throttling ring is embedded in a cathode tube of each hollow cathode, the positive pole of each contact electrode power supply is connected with the anode of the corresponding diode, the cathode of each diode serves as the second output end of the corresponding unit and is connected with a contact electrode of the corresponding hollow cathode, the cathode tube of each hollow cathode is simultaneously connected with the negative pole of the corresponding contact electrode power supply, the negative pole of the corresponding heating power supply and one end of the corresponding slide rheostat R1, the positive pole of each heating power supply is connected with a heater of the corresponding hollow cathode, and a main gas supply pipe is communicated with the N hollow cathodes through N branch gas supply pipelines respectively. The work circuit is applied to a plasma thrustor.

A game machine (GM1) is provided with a target (TG), a CRT (312), a card reader (CD) and a cash-box (CB) on a front face. A player inserts his own ID card into the card reader (CD). The CRT (312) displays information concerning a game and has a function of a game display when a game adopting the darts is executed. The target (TG) is not only target hit by an arrow but also a tool by which players obtain points, areas or numerals by arrow throwing. A button (PB) is provided on the game machine (GM1) for “Player Change” of the darts, which is used as an operation input switch (305) for the control unit (100). Therefore, a game is provided adopting a target hitting game which makes even a beginner easily join and is highly entertaining.

The invention discloses a hollow cathode assembly and belongs to the field of a vacuum electronic technology. The assembly comprises a heater insulating barrel which is used as a hollow cathode, and a heat shielding barrel, wherein the heat shielding barrel is provided with a heat isolating groove; and a cathode tube is internally provided with single-hole and multi-hole inner separation rings which are alternatively arrayed. According to the hollow cathode assembly, the heater insulating barrel is arranged on the heat shielding barrel so as to reduce the contact area, reduce conduction heat energy, prolong a heat conduction path and reduce cathode heat energy loss; and the heater insulating barrel is arranged and is not reacted with a heater at a high temperature, so that the service life of the heater is prolonged, the service life of a cathode is prolonged and the hollow cathode assembly is applicable to majority of heat cathodes.

The preparation method for foam glass comprises: clearing the glass surface of waste CRT without electron gun, removing the fluorescent layer and grid to smash and grind; putting the glass powder and chemical-pure CaCO3 into a ball grinder for grinding and mixing to load into mold tool; heating with 8Deg / min speed from room temperature to 500Deg; heating with 10~12Deg / min from 500Deg to 710~730Deg; then, foaming and cooling with 20Deg / min speed to 600Deg, holding for 20~60min; finally, annealing slowly with 1Deg / min speed to room temperature. The product has high mechanical strength and well physical properties. This invention needs temperature of lower 10~15Deg to similar method, is benefit to environment protection.

The invention relates to a preparation method of optical anti-reflection polyester films, and belongs to the field of surface modification of organic film materials. According to the invention, gamma-methacryloxy propyl trimethoxyl silane (KH570) and (meth)acrylate monomers are copolymerized through radical polymerization so as to obtain copolymers with different KH570 contents, and then the polymer is uniformly coated on the surface of a polyester film by using a spin coater. The preparation method disclosed by the invention is simple in operation; and the modified polyester film has light transmittance, and is applicable to the fields of display, optics and decoration and the like such as LED (light-emitting diodes), CRT (cathode ray tubes), PDP (plasma display panels), EL (electroluminescence) and the like.

The invention discloses an electric flocculation wastewater treatment electrode which comprises a tubular cathode and a rod-shaped or tubular anode, wherein a tubular cavity is formed inside the cathode; the anode is supported in the center of the tubular cavity of the cathode by a plurality of support frames; each support frame comprises an annular body and multiple supporting ribs; the anode penetrates through an annular ring formed by the annular body; and each supporting rib comes into contact with an inner wall surface of a cathode tube, and multiple water flow channels through which water flow can form vortex are formed between each supporting rib and the inner wall surface of the cathode tube. As an electrode of a sewage treatment device is directly made into a tube form, sewage can directly flow in the tubular cavity, and the sewage is electrolyzed while flowing; and moreover, by the water flow channels in the support frames, the water flowing through the channels forms vortex, so that liquid medicine is well mixed, the dissolubility is higher, and the treatment effect is better. In addition, a leakage-proof rubber tube seal is arranged outside the cathode, a closed reaction space is formed, the generated harmful gases do not escape, control is simple, and the reaction is complete.

In one embodiment of the present invention, a backlight device includes six light source units including cold-cathode tubes (linear light sources) and driving circuits for driving the respective cold-cathode tubes. The light source units are arranged in a direction perpendicular to a longitudinal direction of the cold-cathode tubes. In one embodiment of the backlight device, an inverter controller (control portion) turns on the cold-cathode tubes included in each of two light source units that are adjacent in the direction perpendicular to the longitudinal direction while phases of on-time / off-time cycles of PWM dimming of the two adjacent light source units are shifted from each other.

The invention discloses a laval nozzle type magnetic confinement hollow cathode, relates to the field of aerospace and aims to solve the problems that as for the structures of existing hollow cathodes, the properties of the hollow cathodes are reduced and the service life of the hollow cathodes is shortened. A cathode tube is sleeved with an outer tube, a cathode top plate is disposed at the bottom of the cathode tube, a contact pole is disposed at the bottom of the outer tube, small holes are formed in the centers of the cathode top plate and the contact pole correspondingly, and a small-holechannel from the cathode top plate to the contact pole is a gradual-shrinkage gradual-expansion type channel. The laval nozzle type magnetic confinement hollow cathode is applicable to hollow cathodes.

The invention discloses a manufacturing method for a kind of square deflection magnetism core and the materials. 1) the Fe2O3, ZnO, Mn3O4, ...MgO, and additives CuO, Bi2O3 elements are blended, prebaked, and reacted with solid phase, the compound generates the ferrite phase after being prebaked; 2) the prebaked material are grinded into pulp with particle size less than phi1.8ª–m, then the additives are added in and carries on the atomization pelleting; 3) the particles are blended and pressed, formed in the automatic presser and special model; 4) uses the flat board or bake bearing base process to carry on oriented baking. The merits of the invention are: 1) it uses cheap materials ferric oxide, with current manufacturing device and special process, it decreases the cost greatly, the key technology parameter is upgraded; 2) PF design makes the magnetic flow area and the density distributed more reasonable, it upgrades the articulation and resolution of the screen; 3)( upgrades the deflection efficiency of negative transmitting pipe of the television receiver, reduces the idle work consumption of the electron beam deflection.

The invention is cold cathode tube which is LBD plate lighting vision technique, its cold cathode tube has small diameter of the cold cathode tube, it has high brightness, low energy-cost, relative high service life, multi-color, and the character that spray and silk-print the light-induce, electric-induce and photosensitive material on the transmit-light board, to change points, stripe lamp-house to surface photo source, that is the lighting display device which can not only used to lighting but also can display, and planar, and can light and display in or out the house.

The invention discloses a cold cathode structure capable of allowing space electric propulsion to be started quickly. The cold cathode structure comprises a cathode tube, an emitter, a heat shield, a cathode top, an igniter electrode, an insulator, a housing and a flange. One end of the cathode tube is arranged to the flange, and the other end thereof is provided with the emitter, and is fixed by the cathode top; the cathode top is provided with a center hole; the emitter is in a hollow pipe shape, is arranged in the cathode tube and is closely contacted with the cathode top; the heat shield is arranged outside the cathode tube and is close to the cathode top, and covers the cathode tube portion equipped with the emitter; the igniter electrode is connected with the housing through the insulator; one end of the housing is connected with the insulator, and the other end thereof is connected with the flange; and the flange is provided with an installation hole. The cold cathode structure can start a cathode and an electric thruster to discharge quickly without pre-heating of a heater, and starting time of a spacecraft electric propulsion system is reduced from hundreds of seconds to one second and below, thereby greatly improving response performance of the electric propulsion system; and the cold cathode structure can be used in the field of space propulsion needing to be started quickly.

The invention provides a method for preparing green emitting phosphor. In the method, burnt green emitting phosphor is cleaned; after the burnt green emitting phosphor is dispersed, the surface of the green emitting phosphor is treated; silicon dioxide is added to the surface treated phosphor powder; the mixture of the phosphor powder and the silicon dioxide is coated; the processed phosphor powder is dehydrated and dried; the dried phosphor powder is screened. The cathode-ray tube used green emitting phosphor can increase the residue of the phosphor powder at the skirt, which is effective for controlling cathode-ray tube aluminium backing bubbles or turned-up edges.

The invention discloses a cathode ray structure based on bionics, a discharging system and a method. A supporting piece is included, a plurality of discharge electrodes are arranged on the supportingpiece in the circumferential direction, each discharge electrode comprises a base connected with the supporting piece, discharge tips with different lengths are arranged on each base in the circumferential direction in a staggered manner, and a center discharge tip is vertically arranged at the middle portion of each base; the length of each center discharge tip is larger than the lengths of the corresponding discharge tips arranged on the corresponding base in the circumferential direction, the center discharge tip is used for reducing the distance between the cathode ray structure and an anode, the formed electric field intensity enables the driving force of an electric field obtained after smoke charging to be high, and the discharge tips arranged on the bases in the circumferential direction are used for increasing spatial distribution homogeneity of electric charge, and therefore the smoke in the space can be better charged.

The invention discloses a rotatable sputtering cathode device for film coating which is characterized by uniform sputtering of film coating materials and high target material use ratio. The invention comprises a pair of cathode circular tubes and a circular tube shape target material, wherein the cathode circular tubes are supported in the machine frame in movable manner and the circular tube shape target material is mounted on the cathode circular tubes; a central supporting tube and a magnetic core element are supported in the cathode circular tubes; the central supporting tube as well as an isolating sleeve, a supporting seat and the cathode circular tubes form a closed cavity, a seal lug is arranged on the inner wall of the isolating sleeve to seal contact with the central supporting tube, the end part of the central supporting tube positioned outside the seal lug is provided with a through hole, the inner cavity of the central supporting tube is communicated with the water inlet tube mounted on the machine frame via the through hole and the through hole on the isolating sleeve, the cavity on the other side of the seal lug is communicated with the water outlet tube mounted on the machine frame via the water outlet through hole on the isolating sleeve, and the water outlet hole on the other end of the inner cavity of the central supporting tube is communicated with the cavity. The invention can be applied to production equipments for vacuum film coating glass.

The invention discloses a disassembling processing method of waste sodium-sulfur cells. The method comprises discharging the sodium-sulfur cells, cooling an electric furnace from an operating temperature to a room temperature, taking out the cell bodies, successively disassembling anode tabs and cathode covers from the cell bodies by using cutting tools, cleaning a cathode core tube with alcohol, then pulling out the cathode core tube from an electrolyte ceramic tube, successively disassembling cell bottom covers and lower sealing parts from the cell bodies by using the cutting tools, splitting a housing, immersing, cleaning sodium polysulfide in carbon felts between the housing and the electrolyte ceramic, and finally separating the electrolyte ceramic tube from the carbon felts and the housing. The disassembling processing method of waste sodium-sulfur cells is simple to operate and environment-friendly, totally prevents generation of fire hazards and other dangerous situations caused by reactions of moisture in the environment, oxygen and a high-temperature environment with metallic sodium, sodium polysulfide, sulfur and the like in the waste sodium-sulfur cells, and has an important practical value for processing the waste sodium-sulfur cells.

The invention discloses a method for cleaning cathode tubes of electrolysis coloring troughs of aluminum profiles. The method comprises the steps that a conductive material is mounted on an anode of a coloring trough, a cathode of the coloring trough is connected with a positive electrode of a power supply, and the conductive material is connected with a negative electrode of the power supply. An electrolyte solution of the coloring trough is charged with direct current, and the cathode tube of the coloring trough is subjected to electrochemical reaction under the electrochemical action, so that metal impurities attached to the surface of the cathode tube of the coloring trough are dissolved in the electrolyte solution of the coloring trough. According to the method for cleaning cathode tubes of electrolysis coloring troughs of aluminum profiles, the cathode and the anode of the coloring trough are switched automatically by switching power supplies of the coloring trough, and the conductive material is mounted on the anode, accordingly, metals and other oxides on the cathode tube can be automatically dissolved in the electrolyte solution under the electrochemical reaction, and further, the cathode tube is not needed to be detached, and the purpose of online cleaning can be achieved. The method is simple to use and good in cleaning effect, improves the conductivity of the cathode, and is uniform in the aluminum profile coloring.

The invention relates to an analytic pretreatment machine for a metal material, also relates to a corresponding treatment method and belongs to the technical field of metallurgy detecting and grinding equipment. The analytic pretreatment machine comprises a vertical cylindrical vacuum chamber provided with an air exhaust interface and a sealing door; the middle of the bottom surface of the vacuumchamber upwards extends to form a cathode tube connected with a high-voltage power supply; a cathode head with a placing area for a to-be-treated sample is arranged on the top of the cathode tube; a shielding device for covering the cathode head and the cathode tube is extended from the periphery of the placing area; a cooling channel which is externally connected with a cooling fluid source is arranged inside the cathode head; a grounded anode base is arranged at the middle of the top end of the vacuum chamber; the grounded anode base downwards extends to form an anode head opposite to the cathode head; an inert gas feeding pipe is arranged in the anode head; and a gas exhausting port of the gas feeding pipe is opposite to the sample placing area of the cathode head. Due to the adoption of the analytic pretreatment machine and the treatment method disclosed by the invention, secondary oxidation can be avoided; excellent effect and high speed can be obtained; and the demand for quick analysis can be better met, and thereby a more accurate detection result is obtained.

An X-ray tube is provided. The X-ray tube includes an electron beam source including a cathode configured to emit an electron beam. The X-ray tube also includes an anode assembly including an anode configured to receive the electron beam and to emit X-rays when impacted by the electron beam. The X-ray tube further includes a gridding electrode disposed about a path of the electron beam between the electron beam source and the anode assembly. The gridding electrode, when powered at a specific level, is configured to grid the electron beam in synchronization with planned transitions during a dynamic focal spot mode.