Matches 201 - 250 out of 290 < 1 2 3 4 5 6 >
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4913718 Molding method for optical element and apparatus therefor  
Disclosed is a glass press molding method which comprises a step of heating glass material and a mold die composed at least of an upper mold die and a lower mold die for molding the glass material;...
4897101 Method of forming a precision glass mold and article  
A method of forming precision glass molds suitable for molding glass optical elements or lenses is disclosed. The glass molds define first and second opposed optical molding surfaces. Each master...
4883528 Apparatus for molding glass optical elements  
An apparatus for molding glass optical elements by means of at least one molded glass mold is disclosed. The optical element, which may be a lens and which may be formed of glass, is molded within...
4875916 Methods of adjusting the configuration of optical substrates  
In order to provide a substrate such as an optical preform rod (24) which suitable for insertion into a tube and which has a transverse cross section that is substantially circular and disposed...
4842633 Method of manufacturing molds for molding optical glass elements and diffraction gratings  
A base material excellent in heat resistance and high-temperature strength is processed into a desired configuration. The processed base material is coated with a heat-resistant film having...
4842782 Manufacture of ophthalmic lenses by excimer laser  
Complex small objects such as ophthalmic lenses are quickly and accurately fabricated from plastic or glass blanks of ablatable material such as plastic or glass by cutting, shaping, and radiusing...
4838915 Method for heating thick-walled glass tubes and apparatus therefore  
A method for heating thick-walled glass tubes, particularly quartz tubes, in the manufacture of optical fibres while using microwave energy. According to the invention, the tube (5) is pre-heated...
4818263 Method and apparatus for precisely positioning microlenses on optical fibers  
A microlens is precisely positioned on the end of an optical fiber by urging the fiber against a moving abrasive lap at a desired angle and simultaneously turning the fiber end, either continuously...
4812344 Composite capillary tube structure and method of forming  
A composite capillary tube structure made of a plurality of glass layers and methods for making same. This composite includes inner and outer layers of fused silica glass separated by an...
4797144 Deep pressing mold and process for molded optical elements  
A method and apparatus for molding precision optical quality glass elements having complex and concave surfaces requires the apportionment of relative movement between two opposing mold surfaces....
4790922 Temperable low emissivity and reflective windows  
The invention relates to using titanium as a protective layer on either side of a layer of silver for making temperable low emissivity windows. The titanium layers will protect the silver layer...
4778505 Method of molding glass body  
According to a method of molding a glass body, a glass preform is placed between upper and lower molds of a mold assembly. The mold assembly is then heated to a predetermined heating temperature...
4766705 Method for polishing the end of an optical fiber  
A method of polishing a roof-shaped, or bevelled, tip having a predetermined angle on the end of an optical fiber is disclosed. The method comprises placing an optical fiber in contact with an...
4756737 Apparatus for producing optical element  
There is disclosed an apparatus for producing optical elements, provided with a conveyor for transporting carriers for materials of optical elements into an evacuatable process chamber, and with a...
4747864 Process for the precision molding of glass articles  
Glass products such as glass lens elements are formed by an improved direct molding process at glass viscosities in the range of 10 8 -10 12 poises. Selected moldable alkali...
4737182 Glass sheet press support and alignment systems  
A pair of generally vertically aligned press bending molds are slidably mounted relative to each other. An alignment pin extends into alignment holes in the upper and lower molds when the molds are...
4696692 Kinematically determinate glass pressing mold assembly and method of use  
A multi-part mold assembly molds glass lenses. A cylindrical sleeve between the top and bottom molds has three cut-outs forming three alignment pads on both ends of the sleeve. These pads are...
4647476 Insulating glass body with electrical feedthroughs and method of preparation  
A glass wafer having high aspect ratio holes passing therethrough is provided with metal conductors in the holes as feedthroughs. First, the wafer is processed to line the holes with a thin...
4631079 Method for stretching a glass rod  
Control over the diameter variations in a glass rod (10) during the stretching thereof is accomplished by cooling the rod after heating and initial neck down of a portion (22) thereof. After...
4629489 Method of manufacturing pressed lenses  
A method of manufacturing a pressed lens based upon the discovery that a high quality lens may be molded despite the fact that the lens is cooled without pressure being applied to the mold. A lens...
4615719 Station indicator  
A device for use with machines having plural article fabrication or tooling stations and an exit path remote from the stations indicates the specific fabrication or tooling station upon which a...
4608071 Method for reducing diameter of a glass rod or tube by drawing  
The invention provides an efficient and accurate method for reducing the diameter of a rod or tube of glass, e.g. fused quartz glass rod as a base material of optical fibers, by drawing when the...
4606747 Process for the contact-less removal of material from the surface of a glass object  
Described is a process for the contact-less removal of material from the surface of an article of brittle material, in particular glass, by means of a laser beam. So that material can be removed,...
4591373 Method for molding high-precision glass products  
A method is provided for molding high-precision glass products where a piece of glass is heated at least in its surface portion and pressed between a pair of molds. Relative movement of the molds...
4529426 Method of fabricating high birefringence fibers  
The present invention relates to a technique for producing polarization-preserving and single polarization optical fibers. As disclosed, high birefringence is introduced into the preform by...
4514206 Method for the production of a transverse corrugated or serrated interior pipe of a double-walled special gas discharge pipe with high angle selectivity  
A method and apparatus for the production of a transversely corrugated or serrated interior pipe of a double walled special gas discharge pipe with high angle selectivity, especially to the...
4510005 Method and apparatus for reshaping and polishing an end face of an optical fiber  
The end face of an optical fiber is urged against the highly polished surface of a disk as a laser beam is directed toward the disk to heat the end face above its softening temperature and cause it...
4486213 Drawing laminated polarizing glasses  
A method is set forth for making polarizing glasses having high dichroic ratios by drawing relatively small silver-containing particles under relatively high stress and elongating such particles...
4477273 Method of and apparatus for straightening and configuring a preform tube from which lightguide fiber is drawn  
A preform from which lightguide fiber is drawn is made by depositing optically suitable layers of doped silicon dioxide on an inner wall of a rotating glass substrate tube which is exposed to a...
4474831 Method for reflow of phosphosilicate glass  
In a method for reflow of a phosphosilicate glass (PSG) layer applied to a semiconductor wafer, the wafer is placed in a processing chamber in parallel alignment with a planar blackbody source. The...
4455325 Method of inducing flow or densification of phosphosilicate glass for integrated circuits  
Phosphorus-doped silicon oxide glass is flowed on an integrated circuit by raising the pressure in which that integrated circuit is placed above atmospheric for a selected period of time and...
4435200 Method of preparing precision pressed glass object  
Glass objects, lenses in particular, can be pressed with precision from a glass which contains 45-55 mol. % P 2 O 5 , 15-40 mol. % BaO, 5-15 mol. % Li 2 O, 5-35 mol. % PbO, 0-2 mol. % Al 2 O 3 ...
4428764 Method of making fusible spacer for display panel  
A fusible spacer for use in the manufacture of a plasma panel rigidly maintains a preselected spacing between the panel sidewalls. The fusible spacer comprises a core fabricated from a refractory...
4417914 Method for forming a low temperature binary glass  
The method of the invention provides a thin film deposit of a binary glass for use in integrated circuits which binary glass has a softening or flow point far below temperatures at which glasses...
4398935 Method and device for the high-precision manufacture of glass articles, in particular lenses  
A method of and a device are provided for the high-precision manufacture of glass lenses where a roughly metered volume of softened glass is transferred in a product holder from a furnace to a...
4388097 Hot-pressed fluoride glasses  
Hot pressing of fluoride glasses is provided. These glasses are synthesized from ZrF 4 -BaF 2 and HfF 4 -BaF 2 systems. Hot pressing rough blanks in a closed die made of hard, polished,...
4382657 Semi-fixed astronomical mirrors and aspherical gratings and methods for manufacturing same by elastic flexion  
The invention relates to astronomical mirrors or aspherical gratings which are obtained from a blank which is composed, in one piece, of a thin disc having a reflecting surface and of a cylindrical...
4358306 Method for molding a fused quartz glass block  
The invention provides a method for molding a block of a fused quartz glass by the plastic deformation of a starting block with smaller dimensions at a high temperature. The molding procedure is...
4345930 Process and apparatus for spherically curving an end of an optical fiber  
In order to provide an end face of an optical fiber with a spherical curvature of predetermined radius, designed to optimize the transfer of luminous intensity from an adjoining light source such...
4295873 Method and apparatus for reworking a hollow workpiece  
A method and apparatus for reworking hollow workpieces, illustratively glass lamp bulbs, to a desired dimensional accuracy and optical finish. In the method, a workpiece is placed within a mold...
4205975 Methods of making a sunlight admitting heat impeding panel  
A process with minor variations for producing a configuration of glass and/or any similar material such as plastic or epoxy is disclosed. The configuration is basically a honeycomb of pipes of...
4071343 Method of making intraocular lenses  
Optical sections (lenses) of pseudophakoi having tangential holes are produced without drilling operations. A preform of lens material is drawn with embedded acid soluble rods and/or openings...
4057409 Apparatus for making cathode-ray tube screens with integrally formed contoured fixtures  
An apparatus for making cathode ray tube screens with contoured fixtures comprises an automatic press having a rotary table with moulds radially fixed thereto, as well as a mechanism for moulding...
4052181 Acoustic energy shaping  
A suspended mass is shaped by melting all or a selected portion of the mass and applying acoustic energy in varying amounts to different portions of the mass. In one technique for forming an...
4052184 Contouring glass seal edge  
In the sealing of two glass surfaces together in the formation of a hermetically sealed hollow article, it is important that the opposed seal edges be uniformly complementary along their sealing...
4046545 Method for making molded glass articles having bulk homogeneity and optical quality surface  
An optical glass article having a desired surface figure and demonstrating maximum theoretical light transmission can be prepared by forming a base anhydrous glass of defined compositional ranges,...
4022602 Method of fabricating low-loss channel optical waveguides  
A material is selected which is capable of propagating light energy and is lso highly absorptive of light energy within a determinable wavelength region. A laser beam which includes such wavelength...
4012217 Bending silicon rods into U-shapes  
A U-shaped carrier member formed out of a bent silicon starting rod which is uniformly heatable by means of electric current and which is substantially neither elongated nor contracted relative to...
3944640 Method for forming refractory fibers by laser energy  
Method and apparatus for forming fibers of refractory materials. A melt volume is continuously formed on a feed rod of the material to be fiberized and a fiber drawn therefrom. The melt volume is...
3879182 Method of making minature prisms  
Manufacturing miniature plural element wavelength multiplexing prisms by preparing an accurately proportioned greatly oversized preform of each element of the respective prisms and assembling the...
Matches 201 - 250 out of 290 < 1 2 3 4 5 6 >