129 results about "Black glass" patented technology

The invention discloses a black glass ceramic and a production method thereof in order to solve the problems of the conventional glass ceramic, i.e. single color and high production technique cost. The black glass ceramic is produced with the following components in part by weight: 25 to 50 parts of iron tailings, 20 to 50 parts of quartz sand, 10 to 32 parts of petalite, 2 to 6 parts of sodium carbonate, 2 to 6 parts of zinc oxide, 2 to 6 parts of barium carbonate, 0 to 0.1 part of copper oxide, 0 to 2 parts of manganese dioxide, 0 to 0.2 part of cobalt oxide, 0 to 2 parts of chromic oxide and 0 to 3 parts of sodium nitrate. Since the invention utilizes the discarded iron tailings as the material of the black glass ceramic, the waste is made profitable, pollution is reduced, the environment is protected, moreover, the physicochemical performance of the product can be enhanced, and the single-color problem of the black glass ceramic is solved; the corrosion of the refractory material of a glass furnace by molten glass is reduced, and thereby the service life of the equipment is prolonged; and the application range of the black glass ceramic is wide.

A high-gain transparent screen belongs to the field of transparent screen comprises a front-end transparent layer, a fiber transmission layer, a micro-lens layer and a back-end transparent layer through compounding. Wherein, the micro-lens layer is provided with a light spreading lens characterized by a horizontal spreading angle of 70 degrees to 120 degrees and a vertical spreading angle of 40 degrees to 80 degrees. The micro-lens is directly attached to a fiber head top or etched onto transparent materials of the back-end transparent layer. The fiber transmission layer is provided with even fiber diameters. The back-end transparent layer is black glass, a black real-time adhesive film, black anti-dazzle glass or a black real-time anti-dazzle adhesive film to enhance screen contrast and prevent screen reflection. The screen has the advantages of high gain, wide visual angle, lower cost, easy production of various screens with nonstandard size and seamless assembling.

Systems and methods for autostereoscopic display of three-dimensional images include a holographic optical element made by preparing a silver halide gelatin emulsion, coating one side of a glass substrate with the emulsion, holographically recording an eyebox on the coated glass substrate using at least three wavelengths of coherent light combined in a source beam that is divided into a reference beam and object beam with at least one of the reference and object beam passing through a beam shaping device to substantially uniformly illuminate the glass substrate from opposite sides, processing the coated glass substrate, and sealing the coated glass substrate by covering the coated side of the glass substrate with an optical cement and securing to a black glass plate. The element may be mounted in a display and illuminated with at least one projector having optical keystone correction with source wavelengths aligned or matched with the recording wavelengths.

The invention discloses black glass fiber reinforced nylon 6 material for laser welding, comprising the following components, by weight percentage: 25 - 85% of nylon 6, 10 - 50% of glass fiber, 1 - 20% oftransparent modifier, and 0. 1 to 5% of laser-penetrating black powder; the preparing method comprises the following steps: weigh the various materials except for glass fiber according to the above composition ratio, and after high-speed mixing, melt and extrude them together with side-fed glass fiber through twin screw extruder melt extrusion; then cut them by the granulator, and keep the resulting pellets dried in an oven at 80 to 90 o C for 2 to 4 hours and finally the laser-penetrating black powder is produced by injection molding at a temperature of 200 to 280 o C; the material overcomes the shortcomings of the traditional black fiberglass reinforced nylon that the latter cannot be transmitted by laser. Besides, it has the advantages of high strength, high laser penetration and shortening of the welding period. The material is excellent in process science, convenient in production, low in cost, and has long service life and wide applicability, which makes it conducive to large quantities of industrial production.

The invention discloses a system-level stray light test unit attenuator which is mainly composed of an external cover (1), an internal diaphragm (2) and a black glass reflector (3) of a central taper angle. The internal diaphragm is arranged between the external cover and the black glass reflector. The internal surface of the external cover and the surface of the internal diaphragm are coated by high-absorptivity extinction black paint which is used for absorbing light rays entering the attenuator. Better extinction ratio can be achieved under the premise of minimizing shielding of optical load incident lighting so that dark object simulation in a system-level ground stray light test can be realized.

The invention discloses an X-ray camera and a manufacturing method thereof. The X-ray camera is manufactured by coupling a fiber optic taper with a CCD (Charge Coupled Device) or CMOS (Complementary Metal-Oxide-Semiconductor) camera, wherein a needle-like CsI (Cesium Iodide) crystal, a moisture sealer and an aluminium coating or a silicon nitride film are arranged on a big end of the fiber optic taper in order; the fiber optic taper is manufactured by the steps of: sleeving a low-refractive-index cladding on a high-refractive-index core material of an ordinary fiber optic taper, on the basis, sleeving a black glass or lead silicate glass sleeve matching with the fiber optic taper in thermophysical properties, manufacturing a fiber array cylinder according to a front-end process of manufacturing a fiber optic panel, and then drawing the cylinder according to the proportion between the big end and a small end of the fiber optic taper, wherein the fiber optic taper made of the lead silicate glass sleeve requires hydrogen reduction treatment; and after the needle-like CsI crystal, the moisture sealer and the aluminium coating or silicon nitride film are manufactured in order on the big end of the fiber optic taper, the small end of the fiber optic taper is coupled with a light-sensitive surface of the camera by using optical cement. The X-ray camera manufactured in such a way has the minimum pixel reaching 5 micrometers and the resolution ratio being above 301p/mm with good MTF (Modulation Transfer Function).

The invention discloses a method for manufacturing high-temperature-resisting black borosilicate glass by adopting the continuous multi-cavity magnetron sputtering technology. According to the method, before being coated, the glass is cleaned up firstly; then, the glass is conveyed to a pre-vacuum chamber of a continuous type vacuum coating machine through a conveying device and then sequentially enters a plurality of sputtering coating chambers matched with large type titanium aluminum magnetic control targets and silicon targets later on; argon and nitrogen mixed gas is led into the coating chambers, the reactive sputtering gas ratio is adjusted, glow discharge characteristics of the magnetic control targets are modulated, a black TiAlN function thin film is deposited on the surface of the borosilicate glass in a reactive sputtering manner firstly; then, the glass enters the next vacuum chamber, and an SiN protection thin film is deposited in a reactive sputtering manner; and finally coated annealing treatment is carried out, internal stress of the thin film is further reduced, and the film-based interface combination force is improved. The method for manufacturing the high-temperature-resisting black borosilicate glass by vacuum coating can obviously improve the high-temperature resisting performance of the black borosilicate glass through design of a composite thin film, the black glass can bear the temperature of 600 DEG C, and the color of the glass is not changed.

The invention belongs to the field of air driving exploitation of reservoirs and particularly relates to a system for determining a critical pressure gradient of foams generated at a permeability mutation site. The system comprises a sand filling pipe, a liquid supplying device, an air supplying device, a data collection device and an observation device, wherein the data collection device is connected with the sand filling pipe; the sand filling pipe is provided with an injection end and a flow-out end, two sections of filling mediums with different grain diameters are arranged in the sand filling pipe, the filling mediums with relatively small grain diameters are used for filling close to the injection end to form a front sand filling section, the filling mediums with relatively large grain diameters are used for filling close to the flow-out end to form a rear sand filling section, the sand filling pipe is a transparent tempered glass pipe, and the filling mediums are black glass beads; and the observation device comprises a microscope and a computer, the microscope is arranged opposite to the outer circumferential surface of the sand filling pipe, the computer is connected withthe microscope, and a camera is arranged on the microscope. According to the system, the critical pressure gradient of the foams at the permeability mutation site can be determined, and the foams arearranged in a porous medium environment to be researched, so that the influences caused by the mutation of the permeability in a heterogeneous reservoir to the generation of the foams are truly reflected.

The invention discloses a black glass for highly absorbing earth surface sunshine and preparation method thereof. The black glass is prepared with borosilicate glass and colouring agent, the colouring agent comprises cobalt oxide or cobaltous oxide, chrome oxide and copper oxide, in every 100 moles borosilicate glass, cobalt ions are 0.1-3 moles, chromium ions are 0.1-3 moles, copper ions are 0.5-4 moles. First, mixing borosilicate glass with the colouring agent uniformly in proportion, melting at 1300-1500 DEG C 1-6 hours; molding in moulds then processing annealing treatment in a annealing furnace at 450-600 DEG C 1-3 hours, then natural cooling to room temperature. The invention produces black glass compound colored by cobalt, chromium and copper ions, the black glass has good absorbing effect of sunshine of the entire sunshine wave band range (200nm-2500nm) reaching on earths surface.

The invention relates to a protective cover for a cutting gun. The protective cover comprises a protective cover body and black glass. The black glass is fixed to the protective cover body through a clamping ring which is fixed to the protective cover body. The protective cover body comprises a main cover body, a fixing ring A and a sight window. The fixing ring A and the main cover body are connected through ribs. A fixing hole A is formed in the fixing ring A. The clamping ring comprises a fixing ring B and clamping strips. An arc protrusion is arranged at the position, facing the outside, of each clamping strip, and the clamping strips on the clamping ring are evenly distributed on the outer side of the clamping ring. A cutting torch is placed in the fixing hole A in the protective cover body and a fixing hole B in the clamping ring, the cutting torch and a cutting gun head are fastened, and therefore the fixing ring A and the fixing ring B are fixedly clamped between the cutting torch and the cutting gun head through the cutting torch. The protective cover is simple in structure, economical, practical and rapid to mount, can play a role of preventing splashing and does not affect observation of the moving direction of the cutting torch by an operator, so that the precision of gas cutting is guaranteed.

The invention relates to the field of welding, aims to solve the problems of high workload, long reworking time consumption and great secondary reworking risks during the reworking of a surface defect on the back surface of a weld joint of a small container, and discloses a method for reworking the surface defect on the back surface of the weld joint of the small container. The method comprises the following steps of determining an observation hole and a welding hole, and finding the surface defect on the back surface of the weld joint; filling protective gas into the small container, and discharging air; bending a tungsten electrode for reworking, performing wire addition-free welding on the surface defect on the back surface of the weld joint by using the tungsten electrode, and observing the welding progress through black glass until the surface defect observed through the observation hole is completely removed; performing appearance inspection again, and finishing the reworking when the surface defect on the back surface of the weld joint is completely removed; when the surface defect on the back surface of the weld joint is not completely removed, refilling the protective gas, and repeating the operation to weld the remaining surface defect on the back surface of the weld joint until the surface defect is reworked. The reworking method is low in workload and secondary reworking risks, short in time consumption, simple and easy to operate.

A system of passively heating water using solar energy and an absorber formed from two identical halves of molded darkened glass that are fused together. The absorber is essentially a plurality of black glass struts that are sandwiched between two black glass surfaces. The struts act as baffle plates and define cells. Water is carried through the system via the thermosiphoning effect.

The invention relates to wide-spectrum high-absorption-rate black glass and a preparation method and application thereof. The wide-spectrum high-absorption-rate black glass is prepared from the following raw materials in parts by weight: 40 to 60 parts of iron tailings, 5 to 15 parts of silicon dioxide, 2 to 5 parts of sodium carbonate, 5 to 10 parts of magnesium oxide, 10 to 20 parts of aluminum hydroxide, 0.5 to 1 part of sodium hexametaphosphate, 1 to 2 parts of potassium carbonate, 10 to 20 parts of calcium carbonate and 2 to 3 parts of titanium dioxide. The preparation steps include material proportioning, material mixing, high-temperature fusion, forming and annealing. Test results prove that the prepared black glass has the advantages that the folding resistance strength is great, and reaches 100 to 140 Mpa; a high light absorption rate is realized in the wide spectrum range of 250 nm to 2500 nm, and reaches 90 percent or higher; the black glass can be applied to the preparation of solar energy heat absorption materials, building heat insulation energy-saving materials and the like.

The invention discloses a fire-polishing blackening preparation method of anti-halation step-like glass. The preparation method includes the steps of: 1) placing anti-halation step-like glass roughcast in a sealed furnace and feeding a reductive gas in a flowing manner of simultaneously feeding and discharging the gas; 2) heating the sealed furnace from room temperature to a preheating temperature, removing impurities of the anti-halation step-like glass roughcast, heating the roughcast to blackening temperature to blacken the roughcast, and heating the roughcast to a fire-polishing temperature to perform fire-polishing treatment. The preparation method is short in treatment time and high in efficiency. The black glass can achieve the polishing effect in finish degree without any treatment.

The invention discloses a lamp cap and a manufacturing method thereof. The lamp cap comprises a shell body and a pin connected with the shell body as a whole structure; the pin is a cylindrical cavity with the diameter being 2mm and the protruding height being 2.3mm; black glass is filled in the cylindrical cavity; the shell body and the pin are made of copper, aluminum or steel. The manufacturing method comprises the steps of using a pressing machine to press the material into the shell body; extruding the shell body through an extruder to form a pin structure; placing an electric contact piece; and pouring the black glass to enable the black glass to be filled in the pin. The lamp cap can effectively avoid the loosening and falling-off of the pin, and the safety is high.

The invention provides an anti-light-leakage and high-contrast liquid crystal display structure and display method thereof. The anti-light-leakage and high-contrast liquid crystal display structure comprises an upper polarizer, a lower polarizer and a liquid crystal layer clamped between the upper polarizer and the lower polarizer. A plurality of glass beads are placed on the liquid crystal layer. The glass beads are lighttight. The glass beads bear the upper polarizer and the lower polarizer and stops light from leaking outwardly at the positions of the glass beads. The invention further provides a display method using the display structure. Due to the fact that the glass beads are black and lighttight, when people watch a screen, white light generates linear amplification at nerve cells, the edges of the black points are dimmed by the surrounding white light, compared with white light-permeable glass beads, the displayed black points look smaller by visual effects in coordination with the black glass beads, overall definition is enhanced, and speckles are few.