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5843321 |
Method of manufacturing optical element
Methods of manufacturing optical elements such as diffraction type lenses, aspherical lenses and diffraction gratings are disclosed. Deposited on a glass substrate is a workpiece film made of a...
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5840095 |
Method and apparatus for producing flat metal powder directly from melt
The yield of flat powder (6) of Al, Mg or their alloy is enhanced by forming, on a rotary cooling body (4), a film (8) which can prevent the flat metal powder (8) from sticking to the cooling...
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5827343 |
Process for changing the bend of anodically bonded flat composite bodies made of glass and metal or semiconductor materials
A method for the controlled bending of anodically bonded two-dimensional composites of glass and metal or semiconductor materials. The composite is heated after bonding, for up to 200 hours to a...
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5827342 |
Treatment of glass substrates to compensate for warpage and distortion
A method for forming a substantially flat planar lightwave optical circuit which has a substantially flat planar silica substrate and a sintered glassy lightguiding layer over the silica substrate....
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5817161 |
Optical element forming method
In forming a piano-convex lens from a column-like lens blank by heating the blank to a temperature higher than the transition temperature thereof and by pressurizing an upper die with a closed...
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5788731 |
Process for manufacturing a crystallized glass substrate for magnetic discs
A process for producing a crystallized glass substrate for magnetic disks, including the steps of: (a) holding an amorphous glass plate having a uniform thickness and two principal flat surfaces...
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5788732 |
Optical-device forming method and apparatus
A method and apparatus for forming an optical device of a desired shape presses a heat-softened optical material using a set of molds. The optical material is aligned with respect to the molds by...
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5785729 |
Method for manufacturing large-sized quartz glass tube
A method for fabricating a large-sized primary treated quartz glass tube by perforating a cylindrical quartz glass mother material by a hot carbon drill press-in-process followed by etching and...
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5770123 |
Method and apparatus for energy beam machining
An energy beam is irradiated to a workpiece through a beam transmission hole defined in a mask. At that time, a relative position between an energy beam source and the mask or the mask and the...
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5766294 |
Method and apparatus for producing an optical element using a molding block and a temperature effecting mechanism contacting the molding block for heat exchange
A method and an apparatus for producing an optical element capable of performing a molding temperature control required for a plurality of independent molding blocks in a short period of time, and...
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5762676 |
Product for molding glass lenses having difficult shapes
An improved tool is provided for pressing glass into a precision optical element having a strong concave surface. The tool is selected from ceramic and metal materials having coefficients of...
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5759220 |
Method to fabricate shaped laminated glass panes
This invention is directed to a method for manufacturing shaped laminated glass panes comprising an inner glass sheet, and intermediate layer such as thermoplastic material and an outer glass...
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5759221 |
Method of press molding glass optical elements
A method of press-molding glass optical elements by press-molding glass, having a high melting point, at a temperature of 650° C. and higher using a die for press-molding glass optical elements...
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5755845 |
Method and apparatus for bending and tempering glass sheets
The invention relates to the press bending and tempering of glass sheets, especially for use as glazings in vehicles. When the press bending system is not located in a heated environment such as a...
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5735920 |
Method of manufacturing optical glass element
A manufacturing method for an optical glass element having a refractive index equal to a design value after press-molding. A glass material of specified composition is melted and press-molded while...
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5720791 |
Method of producing an optical lens element
An optical lens element is produced by the following steps of: preparing a glass pre-form; forming a metal thin layer or a powder layer, said metal thin layer including gold, platinum,...
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5716694 |
Pane of laminated glass and method for manufacturing such a pane of glass
A pane of glass composed of at least two sheets of glass 2,3 and of at least one insert layer 7. The surface-area of one of the sheets of glass is smaller than that of the other sheet, the edges of...
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5702496 |
Shaped glass sheet and a process for the preparation thereof
A shaped glass sheet having a sharp bend is provided, wherein a radius of curvature of an outer circumference of the bend transverse to the bend is at most 4 times a thickness of the glass sheet...
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5697999 |
Glass sheet bending apparatus
Glass sheet bending apparatus (20) including at least one deformable mold (22) has a linkage (26) that extends between mold members (24) and includes connector links (28) fixed to the mold members...
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5683483 |
Manufacturing method and equipment for large, high-purity flat or curved quartz glass plate
The present invention provides large, high-purity quartz glass plate with a high degree of smoothness and flatness, its manufacturing method and equipment. The invention is characterized by the...
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5679123 |
Method of heating and bending glass sheets
When heating and bending glass sheets in a furnace, it is desirable to raise the sheets towards the furnace heat sources to increase obtainable temperature differentials and reduce heating power....
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5669950 |
Spout forming assembly and method therefor
A spout forming assembly for glassware and a method therefor in which the assembly includes a spout forming device for forming a pour spout on the edge of a piece of glassware, an actuation device...
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5665136 |
Process for producing micro lenses using a laser beam
Converged laser beam are irradiated, at right angles, to the surface of a workpiece which is made of glass and supported in a horizontal posture, so that the surface of the workpiece is locally...
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5665134 |
Laser machining of glass-ceramic materials
Rough machining of a glass-ceramic material article such as a radome is accomplished using a high-power Nd:YAG laser. The radome is rotated about its longitudinal axis, and the point of application...
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5660741 |
Process for preparation of small glass electrode
A small glass electrode and process for preparation thereof are disclosed. This small glass electrode is characterized in that said glass electrode, which has a bonded structure comprises a...
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5653778 |
Molding device comprising microwave generator and a microwave oven
A device for molding products made of glass or a synthetic resin which device has a microwave generator, a microwave oven coupled to the generator and mold parts movable relative to each other...
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5653779 |
Method for manufacturing quartz glass components and molding frame therefor
A quartz glass component having a projection on a flat face is manufactured by molding a quartz glass body at a high temperature and under high pressure. The heating temperature is set to a range...
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5645622 |
Method of annealing a fiber within a coiled tube to thereby make a fiber coil for a Faraday-effect current-sensor
Silica tubes and sleeves are used to protect fusion splices between the ends of the fiber coil and polarizing fibers. Use of silica for most of the subassembly components matches the coefficients...
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5643649 |
Method for improving the flatness of glass disk substrates
The invention is a method for improving the flatness of nonmetallic substrates and preferably glass disks. The method comprises the steps of mounting the glass disk on a support. The support...
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5630858 |
Temperature resistant material, particularly as substitute for asbestos in devices for handling objects of hot glass
A temperature resistant material consisting of fiber-reinforced glass and fiber-reinforced ceramics, respectively, is described as asbestos substitute in devices for handling hot glass, glass...
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5620491 |
Process and apparatus for decontaminating glass cullet
The present invention relates to a process and apparatus for the processing contaminated glass cullet, or foreign cullet, into furnace-ready cullet. A furnace may also be used to melt the...
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5616161 |
Machining chamber for a glass compresson molding machine
A machining chamber encloses a glass molding apparatus including a molding die assembly composed of upper and lower molding dies cooperating to define a mold therebetween. The glass molding...
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5611834 |
Method for controlling the free deformation of thermoplastic material
The invention is directed to a method for controlling the free deformation of thermoplastic material in an automated process for processing the material to form articles. These articles are...
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5609934 |
Method of manufacturing heat bonded glass fiber insulation boards
An insulation panel is formed comprising a binderless, heat bonded glass fiber insulation board encapsulated within a partially evacuated, gas-tight envelope. The insulation board is formed by...
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5601627 |
Method for molding optical element
There is disclosed a method for molding an optical element, by preparing an upper mold member and a lower mold member for press molding a glass material, heating the mold members together or...
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5573566 |
Method of making a quartz dome reactor chamber
A method of making a quartz dome for a reactor chamber from a substantially flat quartz disk. The quartz disk is placed on a graphite ring which is rotated. The quartz disk is heated until the disk...
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5573567 |
Method of manufacturing sample tube for nuclear magnetic resonance
The method for manufacturing a sample tube for the use in a nuclear magnetic resonance apparatus comprising the steps of: inserting a core bar into a tubular body made of glass or quartz, the core...
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5484467 |
Process for the production of decorative glass ceramic articles
Process for the production of decorative glass ceramic articles, the design being sunk entirely or partially into the surface of the glass ceramic, wherein the surface, to be decorated, of the...
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5451465 |
Structural glass
The invention discloses an improved structural glass composition and process for manufacture. In one embodiment in which the improved structural glass may be used in isolation, the glass comprises...
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5443607 |
Process for the production of a homogeneous ream-free body made of quartz glass
A process for the production of homogeneous ream-free bodies made of quartz glass or made of a glass having a high content of silicic acid, in which an essentially bar-shaped initial body is...
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5435818 |
Mold for optical element and a method of molding optical element
A method of molding an optical element numerically analyzes the thermal stress produced on a molded optical element product within a mold in a visco-elastic temperature range or elastic temperature...
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5429653 |
Method of partially introverting a multiple layer tube to form an optical fiber preform
Starting from a process for producing a rod-like preform, in particular for optical fibers, in which a tubular blank whose refractive index changes, viewed in the radial direction is fed to a...
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5421848 |
Method for fabricating a lens having a variable refractive index
The invention presents a method for the fabrication or production of three-dimensional lenses with a variable refractive index by wrapping a material with a given refractive index. It is preferred,...
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5392375 |
Glass having refractive index distribution
A process for producing a glass having a rod refractive index distribution, which includes pressing a glass at a temperature below the glass transition temperature to form a glass having a density...
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5346522 |
Method and apparatus for molding optical glass elements or the like
A method and apparatus are disclosed which place a glass blank on a lower mold arranged in an opposed relation to an upper mold, heat these molds and glass blank by an infrared lamp unit or...
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5346523 |
Method of molding chalcogenide glass lenses
An infrared transmitting chalcogenide glass lens having precision optical surfaces of different curvature radii is molded. A pair of molds having different curvature radiuses from each other, and a...
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5344476 |
Method for forming an optical element
An improved method of forming an optical element, wherein heated upper and lower molds are used in conjunction with radiation heating glass material placed in an optical forming surface of the...
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5340373 |
Method for producing optical element by press molding a blank having a component removed layer and a hydrocarbon coating
This invention is to prevent coloring or clouding of the molded article, and also to prevent fusion between the glass blank and the mold member and crack formation in the molded article. The glass...
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5340374 |
Method for molding optical glass elements
The apparatus for molding an optical glass element is made up of relatively movable upper and lower molds for press molding a glass blank, and a plurality of infrared ray lamps encircling the upper...
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5324345 |
Method of moulding products with heating a parison with microwaves
A method and a device for moulding products made of glass or synthetic resin is provided, whereby a parison of material (3) is heated by microwave heating up to a predetermined temperature and is...
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