3581 results about "Glass material" patented technology

Methods and compositions useful for subterranean formation treatments, such as hydraulic fracturing treatments and sand control that utilize relatively lightweight and/or substantially neutrally buoyant particulates. Particles that may be employed include particulates of naturally occurring materials that may be optionally strengthened or hardened by exposure to a modifying agent; porous materials including selectively configured porous material particles manufactured and/or treated with selected glazing materials, coating materials and/or penetrating materials; and well treating aggregates composed of an organic lightweight material and a weight modifying agent. The relatively lightweight particulate may be suspended as a substantially neutral buoyant particulate and stored with a carrier fluid as a pumpable slurry.

An object of the invention is to obtain a glass substrate having high mechanical strength by reconciling suitability for ion exchange and devitrification proof in a glass. The strengthened glass substrate of the invention is a strengthened glass substrate having a compression stress layer in the surface thereof, the glass substrate having a glass composition including, in terms of % by mass, 40-70% of SiO₂, 12-25% of Al₂O₃, 0-10% of B₂O₃, 0-8% of Li₂O, 6-15% of Na₂O, 0-10% of K₂O, 13-20% of Li₂O+Na₂O+K₂O, 0-3.9% of MgO, 0-5% of CaO, 0-5% of ZnO, 0-6% of ZrO₂, and 0-5% of SrO+BaO, the value of (MgO+ZrO₂+ZnO)/(MgO+ZrO₂+ZnO+Al₂O₃) in terms of mass proportion being from 0.25 to 0.45. The above-mentioned strengthened glass can be produced by melting raw glass materials mixed together so as to result in the given glass composition, forming the melt into a sheet by an overflow downdraw process, and then conducting an ion exchange treatment to form a compression stress layer in the glass sheet surface.

A tunable optical source comprises a laser diode and an external optical feedback device. The feedback device has a waveguiding portion fabricated at least in part out of a glass material having both organic and inorganic components. A control device is provided for controlling the refractive index of the glass material so as to change the wavelength of feedback to the laser diode. The glass material may for example have thermo-optic properties and the control device might then be a heating device for heating the glass material. The feedback device can have more than one portion, a second portion for example having controllable coupling characteristics for coupling optical radiation into or out of the feedback device. It also preferably has a portion for controlling optical path length in the feedback device.

A handheld computing device that includes an enclosure having structural walls formed from a glass material that can be radio-transparent. The enclosure can be formed from a hollow glass tube or two glass members bonded together. A laser frit bonding process may be used to hermetically seal the two glass members together to create a water resistant electronic device.

The invention relates to a small and light wide-field free-form surface prism HMD optical system, which belongs to the field of optical system and device design and is applied to the virtual reality and augmented reality field. The invention comprises a free-form surface prism with three optical surfaces, and a micro-image display; the free-form surface prism is made of plastic glass materials with the refractive index greater than 1; the three free-form optical surfaces are concave surfaces, which meet one of the three surface-type equations, and the location relationship of each surface meets three condition equations; the incident angle formed between the widest-field upper edge rays emitted by an LCD and the second free-form surface meets the total reflection conditions; and an image source element is an LCD of 0.61 or 0.59 inches. The small and light wide-field free-form surface prism HMD optical system is light and compact and has the advantages of good aberration correction and high light energy utilization rate; the optical system enables the observer to see clear images in a wide field of view, and the displayed images do not have apparent brightness attenuation and can not easily cause visual fatigue to the observer.

Provided is a solar cell panel dedusting system which is composed of a solar cell panel dedusting comb-shaped circuit, a solar energy storage battery and a control system. The comb-shaped circuit is composed of a substrate, a circuit layer and a superficial layer. The substrate is formed by a glass material. The interface layer is composed of pins of positive and negative electrodes, an array parallel main electrode and parallel period alternatively distributed comb-shaped sub-electrodes. The surface of the circuit layer is covered with a transparent insulating protection film. The control system comprises an inverter, a relay, a transformer and a microcontroller. The microcontroller monitors the solar cell panel output voltage signal in real time. When the surface of the solar cell panelis covered with dust and the light transmittance is reduced, leading to the output voltage is lower than a preset critical value, a one-chip microcomputer emits an instruction to close the relay. Then the solar cell panel dedusting comb-shaped circuit is conducted. The charge particles jump up and fly to the edge under the effect of a traveling wave electric field force and the effect of dedusting is achieved. When the output voltage signal is higher than the preset critical value, the one-chip microcomputer emits an instruction to open the relay so that the dedusting loop is cut off.

There is provided a semiconductor light emitting device which can prevent flickering in illumination due to an alternative current drive, and sensing incongruity at a time of turning off a switch, by providing anti-flickering means in itself, when it is assembled in an illumination device without any extra parts therein. A plurality of light emitting units (1) are formed, by forming a semiconductor lamination portion (17) by laminating semiconductor layers on a substrate (11) so as to form a light emitting layer, by electrically separating the semiconductor lamination portion (17) into a plurality of units, and by providing a pair of electrodes (19) and (20). The light emitting units (1) are respectively connected in series and/or parallel with a wiring film (3). A fluorescent layer (6) containing a fluorescent material having an afterglow time of 10 msec or more and 1 sec or less and/or a layer containing a phosphorescent glass material are formed at a light emitting surface side of the plurality of light emitting units (1).

A light emitting composite material (40) comprising a glassy material (44) and a phosphor (14) suspended in the glassy material (44), wherein the refractive index of the phosphor (14) is approximately equal to the refractive index of the glass material. The light emitting composite material (40) can be used in phosphor-containing light emitting devices, solid-state laser (64) diodes, and as a luminescence collector (90).

A refrigerator includes a cabinet defining a storage space, a main door for opening and closing the cabinet, the main door defining an opening part that is in communication with the storage space, a sub-door rotatably mounted on the main door and configured to open and close the opening part, a panel assembly forming a front surface of the sub-door and made of a half glass material, a detection device provided to the sub-door and configured to detect a user's operation, and a door lighting unit provided to the main door and configured to, based on the sub-door being closed, turn on and off according to a signal from the detection device to allow selective viewing of an inside of the opening part through the panel assembly.

A practical solid-state battery composed primarily of ceramic or glass materials and containing no liquid, gel or polymeric electrolytes. The invention utilizes solid-state electrolyte materials with solid-state anode and cathode materials along with construction concepts utilized in the multi layered ceramic capacitor (MLCC) industry to result in a compact primary or secondary battery.

The present invention provides a method for efficiently manufacturing a glass substrate for magnetic disk having good accuracy of a surface irregularity and an impact resistance. The method includes the steps of: performing press forming to molten glass to prepare a sheet glass material, the sheet glass material having a roughness of the principal surface of 0.01 μm or less and target flatness of a glass substrate for magnetic disk; chemically strengthening the sheet glass material by dipping the sheet glass material in a chemically strengthening salt, thereby preparing a disk substrate; polishing the principal surfaces of the disk substrate. A thickness of the sheet glass material prepared in the press forming step is larger than a target thickness of the glass substrate for magnetic disk by a polishing quantity of the principal surface polishing step.

A cigarette includes lighting (14) and mouth ends (18). It may include a smokable segment (22) disposed at the lighting end. It also includes a mouth-end segment(65); an aerosol-generation system disposed between the lighting and mouth ends, which includes (i) a heat-generation segment (35) adjacent the smokable segment, including a heat source (40) configured to be activated by combustion of a smokable material and an insulation layer (42), which may be formed of a non-glass material that is woven, knit, or both and (ii) an aerosol-generating segment(51) including a substrate (55), which may be monolithic and/or which may include a stitch -bonded portion, with aerosol-forming material disposed between, but physically separate from, each of the heat generation segment and the mouth end; a piece of outer wrapping material (58) that provides an overwrap around at least a portion of the aerosol-generating segment, the heat-generation segment, and at least a portion of the smokable segment; those segments being connected together by the overwrap (64) to provide a cigarette rod; that is connected to the cigarette rod using tipping material (78).

A laminated glazing material with properties of acoustic insulation and mechanical strength. The laminated glazing material including two glass sheets and a single-ply intermediate layer of a thickness having the form of a polymer film. The thickness of the intermediate layer being defined as a function of a variable which is specific to the material, and which defines the critical energy value of the intermediate layer and is representative of the energy necessary for propagation of a crack initiated in the intermediate layer.

To monitor the thickness of a focus ring consumed during wafer processing. A plasma processing apparatus includes a vacuum chamber 1, workpiece mounting means 5, high frequency electric power introducing means 4 and radio-frequency bias electric power introducing means 7 and processes a surface of a workpiece 6 using a plasma that is converted from a gas introduced into the vacuum chamber 1 by the action of a high frequency electric power introduced by the high frequency electric power introducing means 4. The plasma processing apparatus further includes an annular member 11 surrounding the workpiece 6 mounted on the workpiece mounting means 5, and a pair of tubes having an aspect ratio of 3 or higher and disposed on a side wall of the vacuum chamber 1 to face each other. Each tube is vacuum-sealed at a tip end thereof with a glass material. One of the tubes has a light source 15 disposed facing to the interior of the vacuum chamber on the atmosphere side of the glass material, and the other tube has light receiving means 16 disposed facing to the interior of the vacuum chamber on the atmosphere side of the glass material. The light receiving means 16 receives light passing across the surface of the annular member 11.

The invention provides a glass member provided with a sealing material layer, which suppresses generation of failures such as cracks or breakage of glass substrates or a sealing layer even when the distance between two glass substrates is narrowed, and thereby makes it possible to improve the sealing property between the glass substrates and its reliability. A glass substrate has a surface provided with a sealing region, on which a sealing material layer having a thickness of at most 15 μm is formed. The sealing material layer includes a fired material of a glass material for sealing containing a sealing glass, a laser absorbent and optionally a low-expansion filler, wherein the total content of the laser absorbent and the low-expansion filler being the optional component in the glass material for sealing is within the range of from 2 to 44 vol %.

A semiconductor light emitting device package includes: a light emitting device; a wavelength conversion unit formed in a path of light emitted from the light emitting device and including a mixture of a wavelength conversion material and a glass material; and a reflective film disposed on an upper surface of the wavelength conversion unit and reflecting a partial amount of light emitted from the light emitting device and allowing a partial amount of light emitted from the light emitting device to be transmitted therethrough.

Disclosed is a glass material essentially free of BaO and alkali oxide particularly suitable for the glass substrate of LCDs. The glass material consists essentially, expressed in mole percent on an oxide basis, of 70–80%, preferably 72–77% of SiO₂, 3–9%, preferably 4–7% of Al₂O₃, 8–18%, preferably 10–16% B₂O₃, 3–10%, preferably 3–8% of CaO, 0–4%, preferably 0–3% RO, 0–0.2%, preferably 0–0.1% SnO, 0–1%, preferably 0 to 0.5% of XO, where RO represents, collectively, MgO, SrO and ZnO, XO represents, collectively, TiO₂, ZrO₂, Y₂O₃ and La₂O₃. The glass has a strain point in the range of over about 600° C., a coefficient of thermal expansion (CTE) in the range of about 23–35×10⁻⁷/° C., a density lower than about 2.35 g/cm³, a liquidus temperature lower than or equal to about 1200° C. and a durability in BHF less than or equal to 0.5 mg/cm² weight loss.

On the basis of a known process for the production of a preform for an optical fiber for optical data transmission technology, the productivity of the process for the production of complex refractive index profiles is to be improved by providing a quartz glass substrate tube which exhibits different doping in radial direction, introducing a core glass made of synthetic quartz glass into the substrate tube and covering the substrate tube with a jacket tube. A substrate tube suitable therefor is also being provided which tube requires less core glass material for the production of the preform, whether during the internal deposition or for the core glass rod in the rod-in-tube technique. Regarding the process it is proposed according to the invention that a substrate tube be used which was obtained by vitrification of a porous tube-shaped SiO₂ blank, the substrate tube being provided with a core glass layer which is produced in that to the first radial portion of the SiO₂ blank there is added before the vitrification a first dopant which increases the refractive index of quartz glass. The substrate tube according to the invention has in the radial direction regions of different doping whereby it incorporates a core glass layer which has a refractive index of at least 1.459.