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7603876 |
Optical glass, shapable glass material for press-shaping, optical element and process for producing optical element
An optical glass that has high-refractivity and high-dispersion properties, that is less colored and that is suitable for a shapable glass material for press-shaping and various optical elements,...
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7490485 |
Optical glass, press-molding glass gob and optical element
An optical glass whose refractive index is high and whose coloring is decreased comprising, by weight %, 2 to 45% of B 2 O 3 , 0 to 30% of SiO 2 provided that the content of B 2 O 3 >the...
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7451620 |
Optical glass and optical product using the same
An optical glass having a high refractive index and high dispersion characteristics that is suited to application to precision press molding to precisely mold the shape of final products for...
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7415842 |
Optical glass element and manufacturing method thereof
The present invention relates to a manufacturing method for an optical glass element, in which molten glass 9 is pressed between a lower mold 1 and an upper mold 8 , and the pressing process...
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7415843 |
Apparatus and method for producing a glass optical element and glass optical element produced thereby
In a method of manufacturing a glass optical element by press-forming a glass material in a chamber by using a forming mold comprising upper and lower dies at least one of which is movable, where a...
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7155936 |
Doped silica glass articles and methods of forming doped silica glass boules and articles
The present invention provides doped titania-doped silica glass articles having low thermal expansions and low variations in thermal expansion. According to one embodiment of the invention, a...
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7140205 |
Method of manufacturing glass optical elements
Disclosed is a method of manufacturing ultraprecise lenses, including aspherical lenses, not requiring grinding or polishing after press molding. The method comprises heating a glass material to a...
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7122242 |
Wedge shaped glass and methods of forming wedged glass
A glass sheet includes a first edge, an opposing, second edge, and an intermediate location between the first edge and second edge. The glass sheet has a first portion extending between the first...
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7062942 |
Method of manufacturing glass optical fibre preforms and optical fibres
A method of making an optical fibre including providing an increased diameter portion on a rod. The rod is assembled by positioning the rod in a tube such that an annular gap is defined between an...
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7015164 |
Optical glass, glass material for press molding, optical element, and method of manufacturing same
Disclosed is an optical glass comprising, expressed as weight percentages, greater than or equal to 18 percent and less than 30 percent of SiO 2 , greater than or equal to 12 percent and less than...
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7007513 |
Method of manufacturing glass parts for connection of optical fibers, method of manufacturing mother glass to produce glass parts, and glass parts for connection of optical fibers
A method of manufacturing glass parts for connection of glass fibers is provided, which can improve the accuracy of the cross-sectional size of a through hole in the glass part. A mother glass...
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6854289 |
Method of manufacturing glass gobs molded glass articles, and optical elements
Methods and a device of manufacturing glass gobs with good productivity without defects in appearance from a glass melt. Glass gobs are manufactured from glass melt gobs by molding and cooling...
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6813904 |
Differential pressure process for fabricating a flat-panel display faceplate with integral spacer support structures
A process for fabricating a faceplate for a flat-panel display such as a field emission cathode type display is disclosed, the faceplate having integral spacer support structures. Also disclosed is...
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6776006 |
Method to avoid striae in EUV lithography mirrors
A method for manufacturing an EUV lithography element mirror includes sagging a plate of a glass material to produce an EUV mirror blank; and polishing a top face of the EUV mirror blank to produce...
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6629435 |
Method of forming an optical glass element
A method for forming an optical glass element by pressure molding a glass pre-form using top and bottom molds, has steps of heating a glass pre-form held at a position separated from the top and...
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6595026 |
Method of producing press-molded products
A molten glass ( 8 ) is successively supplied from a nozzle ( 5 ) to a plurality of molding dies ( 7 ) and gradually cooled to form glass masses. Each glass mass is reheated in an air atmosphere to...
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6592785 |
Device and method for molding optical components
An optical component molding device and method is disclosed. The molding device includes a heating section, a heating/pressing section, and a cooling section. A carrying member sequentially conveys...
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6546752 |
Method of making optical coupling device
A method of making an optical device comprises the steps of providing a body of vitreous material that is generally tubular along an axis. A portion of the body is molded with external mold...
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6539750 |
Glass substrate forming mold and production method for glass substrate
A glass material ( 4 ) is placed in a forming die including a pair of upper and lower dies ( 1, 2 ) and a control member ( 3 ) for controlling the space between the upper and the lower die, and...
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6526780 |
Method of manufacturing a cathode ray tube
To increase the strength of the glass panel of a CRT, the temperature of the glass panel is reduced during reforming from a temperature above, preferably at least 30° C. above the annealing point,...
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6442975 |
Method of manufacturing thin-plate glass article, method of manufacturing glass substrate for information recording medium, and method of manufacturing magnetic recording medium
There are disclosed a method of manufacturing a thin-plate glass having a good flatness with a high mass productivity and a method of manufacturing a high-quality and high-performance glass...
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6425269 |
Method for glass sheet forming
A method for forming glass sheets is performed by a system ( 10 ) that includes a furnace ( 12 ) having a heating chamber ( 14 ) in which a topside transfer device ( 20 ) has a downwardly facing...
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6422040 |
Method for forming glass sheets
A method for forming glass sheets is performed by a system ( 10 ) that includes a furnace ( 12 ) having a heating chamber ( 14 ) in which a vacuum platen ( 20 ) has a downwardly facing surface ( 22...
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6385997 |
Method for forming a tool for molding microlens arrays
A method for fabricating a mold tool for molding optical elements is taught which comprises heating a mold tool blank made from a vitreous material to a temperature above the glass transition...
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6332338 |
Method of producing glass substrate for information recording medium
Disclosed is a process for producing a glass substrate for an information recording medium by press-shaping a molten glass which gives a glass containing 0.1 to 30 mol % of TiO 2 , 1 to 45 mol % of...
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6233973 |
Process for manufacturing a glass container
A process for the formation of a container of glass, includes a first molding step performed in a preforming mold having pins projecting into the mold over a length less than the thickness of the...
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6230520 |
Process for preparation of glass optical elements
A method disclosed can mold glass optical elements having a good surface precision with a relatively short cycle time even where glass optical elements are manufactured in largely transforming a...
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6224662 |
Use of novel glass compositions in preparing dental glass pillars and support pillars, and method for producing the glass pillars
The present invention relates to the use of novel glass compositions in preparing dental glass pillars and support pillars, and method for producing the glass pillars. The glass material comprises...
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6209354 |
Method of preparing silica glass article
A method of preparing a high purity massive synthetic silica glass article. The method includes a homogenizing step, wherein a rod shaped synthetic silica glass material has a greater optical...
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6182472 |
Manufacture of glass-ceramic plates having opening(s) of bent perimeter, bent glass-ceramic plates
The present invention relates to: a method of bending the perimeter of at least one opening (2) provided in a glass-ceramic precursor plate (1), said perimeter describing a closed curve without...
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6099765 |
Optical component formation method
A method of forming an optical component wherein imperfections in molding the optical component, such as a lens, are removed by: heating an optical material to its plastic state; forming the...
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6079227 |
Method for manufacturing bent and tempered glass sheet and apparatus for manufacturing the same
In a quenching apparatus for quenching a glass sheet that has been heated and bent in a heating furnace, a cooling gas blows onto the glass sheet to provide a distribution of a temperature and/or a...
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6070436 |
Manufacturing method for molded glass articles
Disclosed is a manufacturing method for molded glass articles including glass optical elements such as high precision lenses not requiring grinding and polishing after press molding. The...
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6009728 |
Die for press-molding optical elements
A die for press-molding glass optical elements comprising (a) a base material having heat resistance and sufficient strength to withstand press-molding of optical glass elements; (b) a film on said...
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5987924 |
Lens mold and method of manufacturing a lens
A lens device which can be used as an objective lens in an optical pickup apparatus includes an objective lens provided along a light path facing a disc and having a predetermined effective...
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5951732 |
Method of glass forming
A method of forming glass uses the steps of forming base glass from layered stacks of colored glass; V-Grooving a plurality of base glass layers; stacking the grooved layers; heating and...
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5938807 |
Method for manufacturing press-molded glass object and apparatus therefor
In press molding, a shaft (metal mold 13) is moved by positional or torque control to cause upper and lower molds to reach a set position slightly before a position where the upper and lower molds...
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5904746 |
Method for producing vitreous optical elements by injection molding with pressure application
Method and apparatus for producing vitreous optical elements by injection molding, which essentially includes the stages of: melting down a glass material into a molten state in a viscosity at or...
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5904747 |
Method of molding optical articles
A method for press molding preforms to obtain optical articles in which each preform is prepared beforehand to have a diameter larger than that of an optically functional area of the optical...
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5882369 |
Method for producing a capillary inside a moldable material
A method for producing at least one capillary in a moldable material. The capillary has a large length in relation to its cross-section. A closed cavity is created within the moldable material and...
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5851255 |
Method for manufacturing lens with lens barrel
A method for manufacturing a lens with a lens barrel having a stopper by forming a uniform optical function coating on both lens surfaces. The method includes the steps of forming a first optical...
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5843200 |
Product and process for molding glass lenses
A glass preform, including a core glass adversely affected by interaction with a molding tool, is provided with a thin surface layer of glass components that are inert to the tool and have an index...
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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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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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5766291 |
Method for producing heat-resistant synthetic quartz glass
A porous silica body with a density of 0.1 g/cm 3 to 0.5 g/cm 3 and a density variation of less than 30% is subjected to a first heat-treatment in an ammonia-containing atmosphere, a second...
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5762673 |
Method of manufacturing glass optical elements
In a method of manufacturing glass optical elements at high operational efficiency, a mass of molten glass which is dropped down is cut at a first step by a wind blast into a sequence of glass gobs...
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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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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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