Canon Kabushiki Kaisha

Hitachi, Ltd.

Asahi Glass Company, Limited

Nsk Corporation

Hitachi Seibu Soft Ware Co., Ltd.

Kiyoshi Yamamoto

Takeshi Nomura

Masashi Mashige

Keiji Hirabayashi

Yasushi Taniguchi

Noriko Kurihara

Keiko Ikoma

Atsushi Maruyama

Masanori Ogino

Kazutaka Naka

Hiroyuki Urata

Masaki Omori

Masaki Ohmori

Masayuki Tomida

Fumio Inoue

Masahiro Eto

Hitoshi Murao

Tetsuo Kuwabara

Fumitaka Yoshimura

Isamu Shigyo

Yoshiyuki Beniya

Sunao Miyazaki

Masaaki Yokota

Keiji Kojima

Masayoshi Nakamura

Miyuki Ikeda

Naoko Shirota

Masaaki Matsushima

Hachiro Hirano

Satoshi Wakayama

Yoshiki Matsuda

Mamoru Aoki

Ikuo Matsukura

Tetsuya Hashimoto

Michio Endo

Bunryo Sato

Shunichi Kiyono

Kunio Umehara

Hiroe Tanaka

Makoto Koganei

Masaaki Iwanaga

Hiroshi Sakamoto

Nobuyuki Nakagawa

Daisuke Tominaga

Kouichi Yokoyama

Toru Aruga

Akira Hibara

Tatsuya Minamiyama

Sadaji Narituka

Nana Tsushima

Tatsuya Nishiyama

Shizuo Maruyama

Reiko Kakita

Yoshiyuki Imoto

Jiro Kawasaki

A three-dimensional shaping apparatus includes an ejection portion, a base stage, a movement portion, and a controller. The ejection portion configured to eject a fused thermoplastic resin. The movement portion configured to change relative positions of the ejection portion and the base stage. The controller configured to control the movement portion and the ejection portion such that a wall is formed by ejecting a fused thermoplastic resin from the ejection portion while relatively moving the ejection portion with respect to the base stage to provide a space surrounded by the wall in a horizontal direction and open in an upward direction, and such that a filling portion is formed by injecting a fused thermoplastic resin into the space from above.

Method of producing three-dimensionally shaped object and three-dimensional shaping apparatus

Provided is a resin cage for a tapered roller bearing in which a mold parting line which is extended in an axial direction is formed in a pillar portion defining a pocket. On facing surfaces of adjacent pillar portions, on an outer diameter side from the mold parting line, a first conical surface which slides in contact with an outer peripheral surface of a tapered roller is formed, and a first flat surface in a radial direction is formed in a portion on the outer diameter side from the first conical surface. On an inner diameter side from the mold parting line, a second conical surface which slides in contact with the outer peripheral surface of the tapered roller is formed, and a second flat surface in a radial direction is formed in a portion on the inner diameter side from the second conical surface.

Resin cage for tapered roller bearing and tapered roller bearing including the resin cage

Provided is an optical glass having homogeneous optical characteristics such that striae and devitrification hardly occur at the time of producing a gob. The optical glass includes cationic components having the following composition, provided that a total of the cationic components is 95 cat %, and has a refractive index (nd) of 1.6 or more and less than 1.7 and an Abbe number (vd) of 50 or more and 56 or less, Si3 cat % or more and 13 cat % or less B40 cat % or more and 55 cat % or less La4 cat % or more and 9 cat % or less Ca6 cat % or more and 12 cat % or less Li11 cat % or more and 18 cat % or less Zn6 cat % or more and 12 cat % or less Zr1 cat % or more and 4 cat % or less provided that Si/Bis 0.05 or more and 0.3 or less, and Li/Znis 1.3 or more and 2.0 or less.

Optical material and optical element

A method for producing sodium hydrogencarbonate crystal particles having a low caking property, which comprises lowering the potassium concentration in sodium hydrogencarbonate crystal particles having a mean particle diameter of from 50 to 500 &#x3bc;m to a level of at most 50 mass ppm.

Sodium hydrogencarbonate crystal particles

A pellicle is used for a photolithographic patterning process using a light having a wavelength of from 100 to 200 nm. The pellicle contains a pellicle membrane containing (A) a substantially linear fluoropolymer which has an alicyclic structure in its main chain, the main chain being a chain of carbon atoms, and the fluropolymer satisfying the following requirements (1) the carbon atoms in the main chain of the fluoropolymer contain a carbon atom having at least one hydrogen atom bonded thereto and a carbon atom having no hydrogen atom bonded thereto; and (2) in the measurement of a high resolution proton magnetic resonance spectrum of the fluoropolymer, a number of hydrogen atoms based on signals appearing on the higher magnetic field side higher than 2.8 ppm, is at most 6 mol % based on a total number of hydrogen atoms.

Pellicle

A video signal processor for outputting a video signal based on an output horizontal synchronizing signal and an output vertical synchronizing signal. The processor includes a circuit inputting a reference horizontal synchronizing signal, a circuit inputting a reference vertical synchronizing signal, a circuit generating an output horizontal synchronizing signal having a frequency different from that of the reference horizontal synchronizing signal, and a circuit generating an output vertical synchronizing signal synchronized in phase with the reference vertical synchronizing signal.

Processor of video signal and display unit using the same

A molding method for optical element is disclosed in which a glass material prepared for weight is introduced into a mold and then heated to soften, and subsequently pressed with the mold to mold an optical element. The glass material is heated to have a viscosity of 10.sup.5 to 10.sup.7 dPaS and press-molded with the mold having a temperature equivalent to a viscosity of 10.sup.9 to 10.sup.11 dPaS of the glass material.

Molding method for optical element

Lens surfaces are transferred by press-molding a glass material (16) by an upper mold (1) and a lower mold (2). After the lens surfaces are transferred, the outer circumferential portions of the upper and lower molds (1, 2) are clamped and pressed sideways to correct a shift between the optical axes of the transfer molding surfaces of the upper and lower molds (1, 2) and an inclination of the optical axes.

Optical device molding apparatus and method, and optical device

An optical lens press-molded so that within at least the optically effective diameter thereof, the thickness thereof may become greater from the center of the optical axis thereof toward the marginal portion of the lens, characterized in that at least one of the both lens surfaces thereof is a spherical or aspherical concave lens continuous from a transferred surface formed so that in the area outside the optically effective diameter thereof, the thickness of the lens may be limited away from the extension of a curved surface of a radius of curvature setting the optically effective diameter toward the outer diameter of the lens, and forming the transferred surface up to at least the required outer diameter of the lens, and a free surface portion is left outside the outer diameter of the lens during molding.

Optical lens and mold for molding the same

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 two or more aligning members which move around the center of the mold relative to each other. The optical material may also be aligned by inserting a pin into an aligning hole which is fixed to the mold body and has been aligned with respect to the molds.

Optical-device forming method and apparatus

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 it is in the molten state. The refractive index of the glass material is calculated by substracting a change in the refractive index of the glass material resulting from the press-molding from a required refractive index for a molded glass element.

Method of manufacturing optical glass element

A CRT display device capable of displaying a signal from the existing image signal source, in which a vertical frequency is approximately fixed and a horizontal frequency is widely distributed beyond a ratio of 3:1, on one image screen. The CRT display device includes a scan converter unit and a display unit. The scan converter unit includes an output horizontal frequency unifying circuit, a horizontal blanking period ratio converting circuit, a vertical frequency converting unit and a vertical blanking period ratio converting circuit. The display unit includes a vertical deflection circuit and a circuit for correcting a vertical S-shaped distortion. In a phase synchronous circuit, a lock-out detector is connected to an output of a three state output digital phase detector, and on the basis of an output thereof, a switch is subjected to the 'ON'/'OFF' control. For a period of time when an output of the lock-out detector indicates a lock-out state, a loop gain of the PLL is increased and the pull-in time is shortened. For the remaining periods of time, i.e., in the steady state, the loop gain is decreased and the noise resistance characteristics are improved.

Scalable CRT display device and phase synchronous circuit for use in

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 range of an optical element material in a cooling step of the molding process on the basis of a visco-elastic characteristic of the optical element material. A correction for the molding face of the mold is made on the basis of the value obtained by the numerical analysis so that any error between the optical functional face of optical element molded by the mold at room temperature and the optical functional face set on design may fall within a tolerance, thereby determining the molding face adapted to the shape of the optical functional face set on design.

Press-molded optical element

A document retrieving method in a document management system which manages documents, using a computer. The classification of documents is managed in accordance with a plurality of node trees constructed in a hierarchical structure. Each document is related to at least one node among a plurality of nodes in the node trees. In retrieval, an OR merge operation is performed on documents related to all the nodes ranging from the target node and extending through all lower nodes linked directly and indirectly to the target mode of a designated node tree to form a collection of documents. When a different node tree is designated, a similar OR operation is performed on documents related to all the nodes ranging from the target node to lower nodes linked directly and indirectly to the target node to create another collection of documents. These steps are repeated and an AND-marge operation is performed on the obtained collections of documents to create and output a final collection of documents.

Document retrieving method in a document managing system

Growing community of inventors

Yokohama, Japan

Kiyoshi Yamamoto