Patent application number | Description | Published |
20080293556 | OPTICAL GLASS, PREFORM FOR PRECISION PRESS-MOLDING, OPTICAL ELEMENT, AND METHODS FOR MANUFACTURING THE SAME - Provided is an optical glass comprising, denoted as molar percentages:
| 11-27-2008 |
20090042711 | OPTICAL GLASS, PRECISION-PRESSMOLDING PREFORM AND OPTICAL ELEMENT - [Object] To provide a high-refractivity high-dispersion optical glass having excellent stability | 02-12-2009 |
20110105294 | OPTICAL GLASS, PRECISION PRESS-MOLDING PREFORM, OPTICAL ELEMENT AND PROCESS FOR PRODUCING THE SAME - [Problems to be Solved] | 05-05-2011 |
20110263410 | METHOD FOR PRODUCING GLASS, OPTICAL GLASS, GLASS MATERIAL FOR PRESS MOLDING, OPTICAL ELEMENT AND METHODS FOR PRODUCING SAME - A process for producing a glass in the production of a glass molded article formed of an optical glass by melting and clarifying a glass raw material to prepare a molten glass and molding said molten glass,
| 10-27-2011 |
20110289970 | PREFORMS FOR PRECISION PRESS MOLDING, OPTICAL ELEMENTS, AND METHODS OF MANUFACTURING THE SAME - Preforms for precision press molding made of optical glass, optical elements, and methods of manufacturing the same are provided. The preforms are suited to precision press molding having a broad range of dispersion characteristics, a low glass transition temperature, a low sag point, and good resistance to devitrification while containing no PbO. The optical element is obtained by precision press molding the preform. One example of the preform has a refractive index (nd) of greater than or equal to 1.7 and an Abbé number (νd) of less than or equal to 32. The other example of the preform has an Abbé number (νd) exceeding 32. | 12-01-2011 |
20120035044 | Optical glass, preform for precision press molding, optical element and method of manufacturing thereof - An optical glass having a refractive index n | 02-09-2012 |
20120309605 | OPTICAL GLASS, PREFORM FOR PRECISION PRESS MOLDING, AND OPTICAL ELEMENT - The present invention relates to an optical glass with a high refractive index and good precision press moldability, and a preform for precision press molding and an optical element that are comprised of the optical glass. The present invention further relates to a method of manufacturing an optical element, a lens unit being equipped with an optical element and an image pickup device being equipped with a lens unit. | 12-06-2012 |
20130040800 | OPTICAL GLASS, PREFORM FOR PRECISION PRESS MOLDING, OPTICAL ELEMENT AND METHOD OF MANUFACTURING THEREOF - An optical glass having a refractive index n | 02-14-2013 |
20130079213 | OPTICAL GLASS, PREFORM FOR PRECISION PRESS-MOLDING, OPTICAL ELEMENT, METHODS FOR MANUFACTURING THEREOF, AND IMAGING DEVICE - An optical Glass characterized by comprising, denoted as molar percentages: B | 03-28-2013 |
20150175475 | OPTICAL GLASS AND USE THEREOF - An aspect of the present invention relates to optical glass, which is oxide glass including cation components in the form of 10 to 40 cation % of P | 06-25-2015 |
20150203397 | GLASS, OPTICAL GLASS, GLASS RAW MATERIAL FOR PRESS MOLDING, AND OPTICAL ELEMENT - A glass including at least one type of oxide selected from TiO | 07-23-2015 |
Patent application number | Description | Published |
20090099002 | OPTICAL GLASS, PREFORM FOR PRECISION PRESS MOLDING, METHOD FOR MANUFACTURING PREFORM FOR PRECISION PRESS MOLDING, OPTICAL ELEMENT, AND METHOD FOR MANUFACTURING OPTICAL ELEMENT - The present invention relates to an optical glass having optical constants in the form of a refractive index nd of 1.70 or higher and an Abbé number nud of 50 or higher, a preform for precision press molding comprised of this glass, an optical element comprised of this glass, and methods for manufacturing the preform and the optical element. | 04-16-2009 |
20090314033 | GLASS MATERIAL FOR MOLD PRESSING AND METHOD FOR MANUFACTURING OPTICAL GLASS ELEMENT - A glass material for mold pressing, comprising a core portion comprised of an optical glass with a degree of abrasion FA of 200 or higher and a covering portion comprised of a second glass covering at least a portion of the surface of said core portion. A method for manufacturing an optical glass element, wherein a glass material that has been preformed to a prescribed shape is heat softened and press molded with a pressing mold and the outer perimeter portion of the molded product obtained is removed by mechanical processing. The above-mentioned glass material for mold pressing is used as the glass material. To provide a means whereby an optical element does not bear scratches on optically functional surfaces through contact during handling after the press molding of press molded glass products despite being comprised of a glass material with a high degree of abrasion, and a means whereby even when scratched, the function of the optical element finally obtained is unaffected. | 12-24-2009 |
20100018252 | METHOD FOR MANUFACTURING OPTICAL GLASS ELEMENT - A method for manufacturing an optical glass element, comprising: annealing a press-molded product obtained by press molding into a lens shape a glass material comprised of a core portion comprised of an optical glass (first glass) with a transition temperature of 550° C. or higher and a covering portion comprised of a second glass covering the surface of said core portion; and then removing the covering layer from the surface of the press-molded product to obtain an optical glass element. To provide a method for manufacturing high-optical-performance mold-pressed lenses in which the defective external appearance of optical elements comprised of high-temperature glass materials with a Tg of 550° C. or higher is prevented. | 01-28-2010 |
20100292066 | GLASS MATERIAL FOR MOLD PRESSING, METHOD FOR MANUFACTURING SAME, AND METHOD FOR MANUFACTURING OPTICAL GLASS ELEMENT - A glass material for mold pressing, comprised of a core portion comprised of a multicomponent optical glass containing at least one readily reducible component selected from among W, Ti, Bi, and Nb, and a covering portion covering the surface of said core portion, comprised of a multicomponent glass containing none or a lower quantity of said readily reducible component than is contained in said core portion. A glass material for mold pressing comprising a core portion comprised of a fluorine-containing multicomponent optical glass and a covering portion covering the surface of said core portion, comprised of a multicomponent glass containing none or a lower quantity of fluorine than is contained in said core portion. A method for manufacturing an optical glass element comprising heat softening a glass material that has been preformed into a prescribed shape, and conducting press molding with a pressing mold, employing the above glass material of the invention. To provide a stable production of optical elements affording adequate optical performance by using optical glass containing readily reducible components or fluorine and inhibiting undesirable interface reactions during press molding. | 11-18-2010 |
20110143907 | OPTICAL GLASS, PREFORM FOR PRECISION PRESS MOLDING, AND OPTICAL ELEMENT - The present invention relates to an optical glass with a high refractive index and good precision press moldability, and a preform for precision press molding and an optical element that are comprised of the optical glass. The present invention further relates to a method of manufacturing an optical element, a lens unit being equipped with an optical element and an image pickup device being equipped with a lens unit. | 06-16-2011 |
20120142516 | OPTICAL GLASS, GLASS MATERIAL FOR PRESS-MOLDING, AND OPTICAL ELEMENT - The disclosed is an optical glass having ultrahigh refractive index and high dispersion characteristics in the form of a refractive index nd exceeding 2.05 and an Abbe number vd of 18.5 or lower and of permitting the stable production of high-quality glass from a glass melt; and a glass material for press molding and an optical element comprised of the optical glass. The optical glass is in the form of an oxide glass and comprises, denoted as cationic percentages,
| 06-07-2012 |
20120238433 | OPTICAL GLASS, GLASS MATERIAL FOR PRESS MOLDING, AND OPTICAL ELEMENT - An optical glass in the form of an oxide glass, characterized by comprising, denoted as cation percentages:
| 09-20-2012 |
20120272684 | METHOD FOR MANUFACTURING GLASS, METHOD FOR MANUFACTURING GLASS MATERIAL FOR PRESS MOLDING, AND METHOD FOR MANUFACTURING OPTICAL ELEMENT - A method for manufacturing glass containing a component(s) from Bi | 11-01-2012 |
Patent application number | Description | Published |
20110113607 | POMPON MAKING TOOL - A pompon making tool includes a first member and a second member to be superposed on each other. The first member includes a pair of arms movable relative to each other, and each arm includes an arcuate portion. Likewise, the second member includes a pair of arms movable relative to each other, and each arm includes an arcuate portion. The arcuate portions of the first and the second member each include a base plate portion, and a pair of thread support portions spaced apart from each other in the width direction of the base plate portion. The thread support portions each include a top portion on the outer side of the base plate portion and extend in the longitudinal direction of the arcuate portion. | 05-19-2011 |
20130058670 | IMAGE DEVELOPING DEVICE, PROCESS CARTRIDGE INCLUDING IMAGE DEVELOPING DEVICE, AND IMAGE FORMING DEVICE INCLUDING IMAGE DEVELOPING DEVICE - An image developing device includes a developer supporting body; a first conveyance path in which a first conveyance member is arranged; a second conveyance path in which a second conveyance member is arranged; and a partition member that partitions the first conveyance path and the second conveyance path and that has a first communication port and a second communication port. The first communication path and the second communication path communicates with each other through the first communication port and the second communication port. The image developing device includes a developer amount detection unit that includes an optical detection unit arranged in the second conveyance path and that optically detects an amount of the developer in the image forming device. The developer is caused to accumulate in the vicinity of the developer amount detection unit. | 03-07-2013 |
20130195487 | COLOR IMAGE FORMING APPARATUS - Provided is a color image forming apparatus that includes: image carriers that form toner image of black and other colors; an intermediate transfer body that makes contact with the image carriers; and transfer units that transfer the toner images on the image carriers to the intermediate transfer body. A line velocity difference is set between the image carriers and the intermediate transfer body. An accelerated cohesion degree of toner is equal to or larger than 54%. A linear velocity difference X | 08-01-2013 |
20130236217 | DEVELOPMENT DEVICE, AND IMAGE FORMING APPARATUS AND PROCESS UNIT INCORPORATING SAME - A development device to develop a latent image using developer having a degree of agglomeration of 54% or greater includes a developer bearer to carry developer thereon, and a developer supply member to contact the developer bearer to supply developer to a surface of the developer bearer. The developer supply member is disposed to satisfy at least one of two conditions: a biting amount of the developer supply member relative to the developer bearer is 0.7 mm or greater; and a contact pressure of the developer supply member against the developer bearer is 30 N/m or greater. | 09-12-2013 |
20130266332 | IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD - An image forming apparatus including a latent image bearing member, a charger, a latent image forming device, a developing device, and a transfer device is provided. The transfer device is adapted to transfer a toner image formed on the latent image bearing member onto an intermediate transfer member or a recording medium by action of a transfer elected field in a transfer position where the latent image bearing member faces the transfer device. When a non-charged portion of the latent image bearing member that has not been charged to a predetermined potential by the charger passes through the transfer position, a strength of the transfer electric field is lowered than that in transferring the toner image. | 10-10-2013 |
20140033487 | NEEDLE PUNCHER - A needle puncher includes a needle and a grip member. The needle has a tip and a head spaced apart from each other in a longitudinal direction of the needle. The needle also has a held portion disposed between the tip and the head The grip member is configured to hold the needle in a manner such that the tip of the needle is exposed from the grip member. The grip member includes a holding portion and a grip portion. The holding portion holds the held portion of the needle, and the grip portion is gripped by a user of the needle puncher. The holding portion and the grip portion include front ends, respectively. The front end of the holding portion is closer to the head of the needle than the front end of the grip portion is. | 02-06-2014 |
20140153955 | IMAGE FORMING APPARATUS - An image forming apparatus includes an image bearing member to bear a latent image on a surface thereof, a developing device to develop the latent image with toner, an intermediate transfer member, a secondary transfer member, a cleaning device, and a main body. The cleaning device cleans the secondary transfer member for a predetermined time period T1 during a startup operation after printing is completed normally before subsequent printing. The main body houses the image bearing member, the developing device, the intermediate transfer member, the secondary transfer member, and the cleaning device. At least one of the image bearing member and the developing device constitutes a process cartridge detachably attachable relative to the main body, and in a case in which the process cartridge is installed in the main body, the cleaning device cleans the secondary transfer member for a time period T2 extended from the predetermined time period T1. | 06-05-2014 |
20140153982 | FIXING DEVICE AND IMAGE FORMING APPARATUS - A fixing device includes a nip formation pad disposed opposite an inner circumferential surface of an endless belt and a pressing rotary body pressed against the nip formation pad via the endless belt to form a fixing nip between the endless belt and the pressing rotary body, through which a recording medium is conveyed. The pressing rotary body has a diameter increasing from a center to each lateral end in an axial direction thereof. The nip formation pad includes a projection disposed downstream from a rotation axis of the pressing rotary body in a recording medium conveyance direction. The projection projects toward the pressing rotary body in an amount increasing from each lateral end to a center in a longitudinal direction of the nip formation pad parallel to the axial direction of the pressing rotary body. | 06-05-2014 |
20140166150 | BEADING LOOM - A beading loom includes two side supports spaced apart in a lateral direction, and a plurality of shafts rotatably connected to the supports. The shafts include first and second thread fixing shafts, and first and second thread supporting shafts. Each of the first and second thread supporting shafts includes first and second thread supporting portions elongated in the lateral direction. In each thread supporting shaft, the first and the second thread supporting portions are provided at different positions in the circumferential direction of the shaft. Each of the first and the second thread supporting portions includes a plurality of grooves arranged at a pitch in the lateral direction. The pitch of the grooves of the first thread supporting portion differs from the pitch of the grooves of the second thread supporting portion. | 06-19-2014 |