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| Number | Title | Issue Date |
| 7716950 | Method for producing single microlenses or an array of microlenses Disclosed is a method for producing single microlenses or an arrays of microlenses composed of a glass-type material, in which method a first substrate is provided with a surface containing impressions over which a second substrate composed of a glass-type material ... | 05/18/2010 |
| 7386998 | Method of manufacturing holder-mounted optical element A cylindrical holder material having a thin deformed portion is located in a press forming die. An optical element material is installed inside the holder material and the holder material and the optical element material are heated to their respective softening temp... | 06/17/2008 |
| 7268958 | Holder and optical element A holder and optical element device includes a holder having a substantially cylindrical interior shape and an optical element fitted in the holder along an inner surface of the holder. The holder may have a step on the inner surface thereof. This step has a surface... | 09/11/2007 |
| 7147454 | Optical lens molding apparatus and precision molding apparatus An optical lens molding apparatus includes a cylindrical mold, a first mold core, a second mold core and a correctional ring. The first and the second mold core have a columnar shape and are disposed inside the cylindrical mold to form a cavity. Furthermore, the fir... | 12/12/2006 |
| 7143609 | Low-temperature fabrication of glass optical components A method is provided for molding from glass certain complex optical components, such as lenses, microlens, arrays of microlenses, and gratings or surface-relief diffusers having fine or hyperfine microstructures suitable for optical or electro-optical applications. ... | 12/05/2006 |
| 6986267 | Method of manufacturing optical element with lens-barrel The invention relates to a method of manufacturing an optical element with a lens barrel, in which an optical raw material is placed on a placement portion projecting toward the center of the lens barrel from the inner peripheral surface thereof, and assuming that a... | 01/17/2006 |
| 6977053 | Manufacturing method of front-end component of endoscope The invention relates to a method of manufacturing a front-end optical component of an endoscope realizing resistance to humidity. In the method of manufacturing a front-end optical component in which a lens is mounted on the front end of a metallic lens-barrel prov... | 12/20/2005 |
| 6938481 | Sight glass and low temperature method of manufacturing the same An improved lower cost sight glass and a method for producing the same is disclosed, whereby the sight glass is made by placing a transparent component in secure contact with a metallic ring. The contact may optionally be effectuated by temporarily altering the rela... | 09/06/2005 |
| 6935136 | Method for fabrication of optical element having metal ring A metal ring for an optical element that is served to cover a peripheral side surface of a lens and served to fix the lens to a mounting member by means of soldering is provided with a thin-wall sleeve a diameter of which is expanded toward a peripheral direction by... | 08/30/2005 |
| 6786064 | Process for the production of glass molded article Provided are a process for the production of a precision press-molded article having a high transmittance and a method of treating a glass to color or decolor the glass, the process comprising heat-treating a press-molded article containing at least one selected fro... | 09/07/2004 |
| 6668588 | Method for molding chalcogenide glass lenses A method for molding a chalcogenide glass lens includes providing a mold. A preformed lens of chalcogenide glass is placed within the mold. The lens has a top surface and a bottom surface. An amount of chalcogenide glass is deposited within the mold and o... | 12/30/2003 |
| 6504657 | Optical member An optical member having a toric functional surface has a marking which is made by a configuration of a mold used to form the optical member. The marking is formed in the optical member outside an effective area of the functional surface of the optical me... | 01/07/2003 |
| 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 temperature of the vitreous material; generating an axial visco... | 05/14/2002 |
| 6295172 | Molding apparatus, optical element molding method, and optical element and prism as molded products It is an object of this invention to provide a molding apparatus capable of obtaining an optical element of which both an optical functional surface and a lens mounting reference can be molded simultaneously and which has an appropriate lens thickness. In... | 09/25/2001 |
| 6189339 | Method for producing silica glass used for photolithography A method for producing a silica glass for photolithography, which comprises the following steps: jetting a starting material gas, an oxygen gas and a hydrogen gas from a burner and depositing and consolidating silica glass powder on a target to form an in... | 02/20/2001 |
| 6079228 | Forming method of glass element A method of molding a glass element in which a glass material is heated and then press-molded between an upper mold and a lower mold when a temperature of the heated glass material reaches a predetermined temperature. A first cooling of the glass element ... | 06/27/2000 |
| 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 diameter, and light controlling means provided along the light pa... | 11/23/1999 |
| 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 lower than a working point of the glass material; injecting... | 05/18/1999 |
| 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 of refraction that matches the core glass. More specifica... | 12/01/1998 |
| 5582626 | Method for making refractive optical elements with graded properties Methods of making gradient property refractive elements such as gradient index lens blanks. The spatial distributions of constituents achieved by subjecting various starting assemblages to various diffusion conditions are predicted. Each such predicted sp... | 12/10/1996 |
| 5173100 | Molding method for optical element A method of molding an optical element by pressing glass material uses a cavity composed of a pair of mold members and a side mold member. Either or both of the pair of mold members are rendered slidable along the axial direction of the optical element wi... | 12/22/1992 |
| 5168404 | Optical element and glass blank for producing the optical element Disclosed is a glass blank used in a producing process for molding an optical element by heating a glass material and press molding the glass material in a mold having optical functional surfaces. Employed is the glass blank having the glass surface coate... | 12/01/1992 |
| 5028251 | Molds for manufacturing molded glass-articles for precision-optical purposes For manufacturing a glass article for precision-optical purposes, a preform is provided which is unwrought relating to the desired shape of the glass article to be manufactured and exhibits within the surface areas serving for the formation of optical eff... | 07/02/1991 |
| 4932989 | Method and apparatus for fabricating microlenses on optical fibers This invention concerns with a process and apparatus for fabricating microlenses on optical fibers. A pulsed laser beam and an end portion of a fiber are arranged relative to each to another so that the laser beam is incident on the end portion of the fib... | 06/12/1990 |
| 4925475 | Method and apparatus for manufacturing preform for fluoride glass fiber A method and an apparatus for manufacturing a fluoride glass fiber preform are disclosed which preclude the step of pouring a glass melt into a mold from a crucible, and hence permit the fabrication of a long, homogeneous fluoride glass fiber preform free... | 05/15/1990 |
| 4921519 | Manufacturing molded glass-articles for precision-optical purposes For manufacturing a glass article for precision-optical purposes, a preform is provided which is unwrought relating to the desired shape of the glass article to be manufactured and exhibits within the surface areas serving for the formation of optical eff... | 05/01/1990 |
| 4902329 | Method of using external system for locating the geometric center of an internal lens element A system is disclosed for externally locating the geometric center of an internal lens element which requires that an external reference surface be accurately formed so as to lie concentrically with the central axis of the internal lens element. This is a... | 02/20/1990 |
| 4902102 | Aspheric optical test plate assembly An aspheric optical test plate assembly is disclosed which permits a qualitative comparison to be made between the surface contour of a known area of an aspheric optical element and the surface contour of an area on the aspheric optical element which shou... | 02/20/1990 |
| 4895585 | Method of manufacturing lens elements A method of manufacturing lens elements, in which a glass preform heated to the softening temperature and an annular metal holder (3) enclosing the glass preform are arranged between the heated moulding dies (7,9) of a mould and are moulded in a pressing ... | 01/23/1990 |
| 4891053 | Method of manufacturing biconvex lens elements and element formed thereby A method of manufacturing biconvex lens elements (21) comprising a biconvex glass lens (23) and a holder (1) consisting of two cylindrical rings (5,7), which are telescopically slidable with respect to each other and have different diameters so that an an... | 01/02/1990 |
| 4883522 | Fabrication of macro-gradient optical density transmissive light concentrators, lenses and compound lenses of large geometry Gradient optical density transmissive light directing devices (24, 26, 28, 30) and fabrication thereof are disclosed herein. Examples of such devices include concentrators, lenses and compound lenses. The present invention teaches a process for the fabric... | 11/28/1989 |
| 4883524 | Invisible flat-top mold blank and method for manufacturing same A mold blank for manufacturing eyeglass lenses containing a flat top bifocal segment. A ceramic platform is first constructed containing an optical surface having a recess corresponding to the flat top bifocal segment. A concave-convex glass mold blank po... | 11/28/1989 |
| 4859261 | Method of making multi-focus ophthalmic lens A method of producing multifocal ophthalmic lenses having a near vision minor lens element adhesively secured to the ocular surface of a major lens is disclosed. The ocular surface of the major lens is finished to provide an ophthalmic prescription lens. ... | 08/22/1989 |
| 4842632 | Method of making multifocal lens blanks There is disclosed an improved method of assembling and fusing the segment and major elements of a multifocal lens blank that employs glass spacer members to space the segment from the major element and allow the segment to progressively slump into sealin... | 06/27/1989 |
| 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 or in discrete steps. The turning causes the fiber end to... | 04/04/1989 |
| 4543146 | Wrinkle prevention in glass/plastic composite lenses A method of minimizing distortion and preventing wrinkles in optical plastic-glass composites utilizing a lens-laminating mechanism wherein stretched synthetic fabric is disposed between a plunger and the plastic-glass composite wherein the stretched synt... | 09/24/1985 |
| 4419119 | Method of forming multifocal lens blank A method of producing multifocal lens blanks by fusing a molten glass segment into a pressed countersink of a lens blank when it is being formed in which the pressed countersink is unpolished and into which unpolished and pressed countersink a minor eleme... | 12/06/1983 |
| 4349374 | Method and apparatus for manufacturing glass progressive lenses Method and apparatus for manufacturing glass progressive power lenses. The lenses are manufactured by a vacuum forming technique in which a glass lens is placed upon a forming block, heated to its softening point, and then forced to sag against and assume... | 09/14/1982 |
| 4224047 | Method of fusing a sight glass to a metal part The instant invention provides, in combination, a metal part having a cylindrical opening, a chamfer below the cylindrical opening, and an aperture below the chamfer, the diameter of the cylindrical opening being less than the diameter of the aperture at ... | 09/23/1980 |
| 4163541 | Mold for the casting of resin ophthalmic lenses having a prismatic segment A mold for casting a resin ophthalmic lens is comprised of a glass disc defining a principal casting surface on one face thereof. The casting surface is a portion of a surface of revolution which has a first axis of symmetry and which has, at a location a... | 08/07/1979 |
