Patents by Inventor Takeo Ikeda
Takeo Ikeda has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20240117955Abstract: A lighting device includes a light emitting module and an optical element including first and second liquid crystal cells. Each of the first and second liquid crystal cells includes first and second transparent electrodes extending in a first direction and third and fourth transparent electrodes extending in a second direction. The light emitting module includes a light source, a light guide plate including an end surface into which light emitted from the light source is incident and a first surface from which the light incident into the end surface is emitted, and a prism sheet disposed opposite to the first surface. The second substrate of the first liquid crystal cell and the first substrate of the second liquid crystal cell are adjacent to each other. The first surface includes a plurality of first grooves extending in a third direction intersecting the first direction and the second direction.Type: ApplicationFiled: November 22, 2023Publication date: April 11, 2024Inventors: Kojiro IKEDA, Takeo KOITO, Tae KUROKAWA, Keiji TAKIZAWA
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Publication number: 20240118574Abstract: A light adjustment device includes a panel unit including a plurality of light adjustment panels stacked in a first direction, each light adjustment panel including a first substrate and a second substrate, the first substrate including a first terminal, the second substrate overlapping the first substrate and including a second terminal, and a metal film provided at a side part of the panel unit and extending in the first direction.Type: ApplicationFiled: September 29, 2023Publication date: April 11, 2024Inventors: Yoshikatsu IMAZEKI, Yoshifumi KAMEI, Takeo KOITO, Kojiro IKEDA
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Publication number: 20240118575Abstract: An optical device includes an optical element including a liquid crystal cell configured to distribute light emitted from a light source, a power supply part configured to generate first and second potentials, a control signal generation circuit part configured to generate a control signal that controls a pulse width of each of the first and second potentials, and a switch circuit part configured to output a first potential signal including the first potential with a first pulse width and the second potential with a second pulse width based on the control signal. The liquid crystal cell includes a first substrate on which first and second transparent electrodes are alternately arranged in a first direction, and a second substrate on which third and fourth transparent electrodes are alternately arranged in a second direction. The first potential signal is input to the first transparent electrode.Type: ApplicationFiled: December 20, 2023Publication date: April 11, 2024Inventors: Takayuki IMAI, Kojiro IKEDA, Takeo KOITO
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Publication number: 20240102633Abstract: A lighting device includes a light source having a first optical element and a second optical element emitting directional light, and one liquid crystal optical element transmitting or diffusing the light emitted from the light source. The first and the second optical elements include a first and a second light exit surfaces, and the first and the second light exit surfaces are arranged to direct in different directions. The liquid crystal optical element has a second electrode group arranged adjacent to a first electrode group. The first electrode group has a first transparent electrode and a second transparent electrode. The second electrode group has a third transparent electrode and a fourth transparent electrode. A pitch at which the first transparent electrodes and the second transparent electrodes are alternately arranged is different from a pitch at which the third transparent electrodes and the fourth transparent electrodes are alternately arranged.Type: ApplicationFiled: November 29, 2023Publication date: March 28, 2024Inventors: Kojiro IKEDA, Takeo KOITO, Tae KUROKAWA
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Patent number: 11934072Abstract: According to one embodiment, a liquid crystal device includes a first liquid crystal cell and a second liquid crystal cell. The first liquid crystal cell and the second liquid crystal cell each include a first strip electrode, a second strip electrode, a third strip electrode and a fourth strip electrode. The extension direction of the first strip electrode and the second strip electrode in the first liquid crystal cell is different from the extension direction of the first strip electrode and the second strip electrode in the second liquid crystal cell. The extension direction of the first strip electrode and the second strip electrode intersects with the extension direction of the third strip electrode and the fourth strip electrode at an angle other than 90°.Type: GrantFiled: September 12, 2023Date of Patent: March 19, 2024Assignee: Japan Display Inc.Inventors: Kojiro Ikeda, Takeo Koito, Koichi Nagao, Shinichiro Tanaka
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Publication number: 20240077769Abstract: A liquid crystal optical element includes a first liquid crystal cell, a second liquid crystal cell and an optical element refracting light. Each of the first liquid crystal cell and the second liquid crystal cell includes a first and a second substrate and a liquid crystal layer arranged between the first and the second substrate. The first substrate includes a first electrode group arranged alternately in parallel to a first direction with a first and a second transparent electrode, and a second electrode group arranged alternately in parallel to the first direction with a fifth and a sixth transparent. The second substrate includes a third electrode group arranged alternately in parallel to a second direction with a third and a fourth transparent electrode, and a fourth electrode group arranged alternately in parallel to a second direction with a seventh and an eighth transparent.Type: ApplicationFiled: November 10, 2023Publication date: March 7, 2024Inventors: Takeo KOITO, Kojiro IKEDA
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Publication number: 20240077768Abstract: An optical element includes first to fourth liquid crystal cells. Each of the first to fourth liquid crystal cells includes a first substrate on which a first pair of comb-shaped transparent electrodes are arranged and a second substrate on which a second pair of comb-shaped transparent electrodes are arranged. An extending direction of the first pair of comb-shaped transparent electrodes is orthogonal to an extending direction of the second pair of comb-shaped transparent electrodes. Between two different liquid crystal cells of the first to fourth liquid crystal cells, one of the first pair of comb-shaped transparent electrodes of one liquid crystal cell and one of the second pair of comb-shaped transparent electrodes of the other liquid crystal cell are electrically connected to each other.Type: ApplicationFiled: November 10, 2023Publication date: March 7, 2024Inventors: Kojiro IKEDA, Takeo KOITO
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Publication number: 20210030895Abstract: The invention contains a resin and a near infrared fluorescent material which is one type or two or more types of compounds selected from General Formulas (I1) to (I4) and has a maximum fluorescence wavelength of 650 nm or longer. In Formulas, Ra and Rb, Rc and Rd, Rh and Ri, and Rj and Rk form rings together with the nitrogen atom to which Ra, Rc, Rh, and Rj are bonded; Re and Rf represent a halogen atom or an oxygen atom; each of Rl, Rm, Rn, and Ro independently represents a halogen atom, a C1-20 alkyl group, a C1-20 alkoxy group, an aryl group, or a heteroaryl group; Rg, Rr, and Rs represent a hydrogen atom or an electron withdrawing group; and each of Rp and Rq independently represents a hydrogen atom, a halogen atom, a C1-20 alkyl group, a C1-20 alkoxy group, an aryl group, or a heteroaryl group.Type: ApplicationFiled: October 13, 2020Publication date: February 4, 2021Applicants: DIC Corporation, NATIONAL UNIVERSITY CORPORATION KOCHI UNIVERSITYInventors: Naoto Sakurai, Takeo Ikeda, Yoshinobu Sakurai, Yasuyuki Watanabe, Takayuki Sato
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Publication number: 20210024821Abstract: An object of the present invention is to provide a resin composition which can be detected both by X-ray radiation and by fluorescence or phosphorescence, and a molded article obtained from the resin composition. The present invention provides a resin composition containing a light-emitting substance and a radiopaque substance; in which the light-emitting substance is a near-infrared fluorescent material or a phosphorescent material. a radiopaque substance of the resin composition is any one of barium sulfate, bismuth oxide, bismuth subcarbonate, calcium carbonate, aluminum hydroxide, tungsten, zinc oxide, zirconium oxide, zirconium, titanium, platinum, bismuth subnitrate, and bismuth. A molded article can be obtained by processing any one of the resin compositions described above.Type: ApplicationFiled: September 29, 2020Publication date: January 28, 2021Applicants: DIC Corporation, NATIONAL UNIVERSITY CORPORATION KOCHI UNIVERSITYInventors: Naoto Sakurai, Yoshinobu Sakurai, Yasuyuki Watanabe, Takeo Ikeda, Takayuki Sato
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Publication number: 20160271273Abstract: The invention contains a resin and a near infrared fluorescent material which is one type or two or more types of compounds selected from General Formulas (I1) to (I4) and has a maximum fluorescence wavelength of 650 nm or longer. In Formulas, Ra and Rb, Rc and Rd, Rh and Ri, and Rj and Rk form rings together with the nitrogen atom to which Ra, Rc, Rh, and Rj are bonded; Re and Rf represent a halogen atom or an oxygen atom; each of Rl, Rm, Rn, and Ro independently represents a halogen atom, a C1-20 alkyl group, a C1-20 alkoxy group, an aryl group, or a heteroaryl group; Rg, Rr, and Rs represent a hydrogen atom or an electron withdrawing group; and each of Rp and Rq independently represents a hydrogen atom, a halogen atom, a C1-20 alkyl group, a C1-20 alkoxy group, an aryl group, or a heteroaryl group.Type: ApplicationFiled: October 17, 2014Publication date: September 22, 2016Inventors: Naoto Sakurai, Takeo Ikeda, Yoshinobu Sakurai, Yasuyuki Watanabe, Takayuki Sato
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Publication number: 20160200970Abstract: An object of the present invention is to provide a resin composition which can be detected both by X-ray radiation and by fluorescence or phosphorescence, and a molded article obtained from the resin composition. The present invention provides a resin composition containing a light-emitting substance and a radiopaque substance; in which the light-emitting substance is a near-infrared fluorescent material or a phosphorescent material. a radiopaque substance of the resin composition is any one of barium sulfate, bismuth oxide, bismuth subcarbonate, calcium carbonate, aluminum hydroxide, tungsten, zinc oxide, zirconium oxide, zirconium, titanium, platinum, bismuth subnitrate, and bismuth. A molded article can be obtained by processing any one of the resin compositions described above.Type: ApplicationFiled: August 13, 2014Publication date: July 14, 2016Inventors: Naoto Sakurai, Yoshinobu Sakurai, Yasuyuki Watanabe, Takeo Ikeda, Takayuki Sato
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Patent number: 9017779Abstract: The present invention provides an ink jet recording medium which is capable of uniform coating with an ink-receiving agent without a surface treatment step for a usual plastic film used as a base material, and which, due to excellent adhesion , does not cause the problem of peeling after ink jet printing, and does not cause the problem of ink binning, fading, dropout, or peeling or peeling of an ink-receiving layer and an over-coating layer, and also provides a printed material formed by ink jet printing on the ink jet recording medium. The ink jet recording medium including a first layer containing a polyolefin resin as a main component, a second layer containing an acid-modified olefin resin, and an ink-receiving layer is used, the ink-receiving layer being formed by applying an ink-receiving agent on the second layer after the first and second layers are laminated by a coextrusion laminating method.Type: GrantFiled: March 26, 2012Date of Patent: April 28, 2015Assignee: DIC CorporationInventors: Takeo Ikeda, Hiroaki Matsubara, Mitsuru Kitada, Yoshitaka Satoh, Kiyomi Nagano
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Patent number: 9005726Abstract: The present invention provides a recording medium for an ink jet ink, which is capable of printing directly with an ink jet ink without a surface treatment step necessary for use of an ordinal plastic film as a substrate and which causes no problem of peeling or the like after printing, and also provides a printed material produced by ink jet printing on the recording medium and a production method therefor. Specifically, printing is performed with various ink jet inks on a layer (A) of a single-layer or multi-layer film (I) used as a recording medium, the layer (A) containing a cyclic polyolefin resin or an acid-modified polyolefin resin.Type: GrantFiled: September 25, 2012Date of Patent: April 14, 2015Assignee: DIC CorporationInventors: Hiroaki Matsubara, Takeo Ikeda, Yoshitaka Satoh, Hiroshi Harada, Yoshihiro Sato
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Publication number: 20140349037Abstract: The present invention provides a recording medium for an ink jet ink, which is capable of printing directly with an ink jet ink without a surface treatment step necessary for use of an ordinal plastic film as a substrate and which causes no problem of peeling or the like after printing, and also provides a printed material produced by ink jet printing on the recording medium and a production method therefor. Specifically, printing is performed with various ink jet inks on a layer (A) of a single-layer or multi-layer film (I) used as a recording medium, the layer (A) containing a cyclic polyolefin resin or an acid-modified polyolefin resin.Type: ApplicationFiled: September 25, 2012Publication date: November 27, 2014Applicant: DIC CORPORATIONInventors: Hiroaki Matsubara, Takeo Ikeda, Yoshitaka Satoh, Hiroshi Harada, Yoshihiro Sato
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Publication number: 20140106140Abstract: The present invention provides an ink jet recording medium which is capable of uniform coating with an ink-receiving agent without a surface treatment step for a usual plastic film used as a base material, and which, due to excellent adhesion , does not cause the problem of peeling after ink jet printing, and does not cause the problem of ink binning, fading, dropout, or peeling or peeling of an ink-receiving layer and an over-coating layer, and also provides a printed material formed by ink jet printing on the ink jet recording medium. The ink jet recording medium including a first layer containing a polyolefin resin as a main component, a second layer containing an acid-modified olefin resin, and an ink-receiving layer is used, the ink-receiving layer being formed by applying an ink-receiving agent on the second layer after the first and second layers are laminated by a coextrusion laminating method.Type: ApplicationFiled: March 26, 2012Publication date: April 17, 2014Applicant: DIC CORPORATIONInventors: Takeo Ikeda, Hiroaki Matsubara, Mitsuru Kitada, Yoshitaka Satoh, Kiyomi Nagano
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Publication number: 20070287124Abstract: An image of intraoral bacteria captured under a phase-contrast microscope and an intraoral image taken with a digital camera are recorded and played back to show the patient those images. The present invention shows improvements in this procedure, such as that (1) the phase-contrast microscope is equipped with a camera of a digital output type, (2) the image of intraoral bacteria and the intraoral image are associated with each other, and (3) at least the intraoral image can be edited.Type: ApplicationFiled: May 26, 2006Publication date: December 13, 2007Inventors: Hidehiko Yamamoto, Takeo Ikeda, Shoji Taguchi
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Patent number: 5192175Abstract: Burrs which have formed on a testing piece during machining a groove or notch in the testing piece can be removed by a method of using machining wherein a cutting edge is pressed onto a surface of the testing piece where the burrs have formed, and is moved in this condition from an opening of the groove along the testing piece to trim these burrs off. A tool employed to carry out this method comprises a body including a cushion mechanism, a holder which is supported on one surface of this body through the cushion mechanism, and the cutting edge which is fixed to this holder.Type: GrantFiled: June 23, 1989Date of Patent: March 9, 1993Assignee: Hitachi, Ltd.Inventors: Morio Oosawa, Takeo Ikeda, Yuji Nezu, Yosio Kamijyo
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Patent number: 5031104Abstract: An in-vehicle navigator comprises a map memory unit for memorizing road map data consisting of road data comprised of the combination of nodes and links, and background data such as buildings, a location detection unit for detecting a vehicle location, an initialization unit for inputting a destination, and route calculation conditions desired by a vehicle operator, and a route calculation unit for reading road map data containing a current location and the destination from the map memory unit. The route calculation unit also calculates a recommended route, based on the read road map data from the map memory unit and the read route computation conditions from the initialization unit. The navigator further comprises a memory unit for storing the recommended route, and a vehicle guidance unit for detecting an approach to a junction on the recommended route, based on the vehicle location.Type: GrantFiled: November 29, 1989Date of Patent: July 9, 1991Assignee: Sumitomo Electric Industries, Ltd.Inventors: Takeo Ikeda, Masaaki Yoshii, Youichi Doi, Kunihiko Mitoh
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Patent number: 5009905Abstract: A gauge member is provided for mounting overlying a bamboo mat, wherein initially a seaweed sheet is mounted overlying the bamboo mat, the gauge is mounted overlying the seaweed sheet. Subsequently, a layer of rice is deposited within the gauge defined by a framework and filled within the gauge up to a predetermined marking. A layer of seafood is then deposited overlying the rice, whereupon the gauge is removed. Finally, the bamboo sheet is rolled and arced to enable rolling of the seaweed sheet containing the rice and seafood therewithin.Type: GrantFiled: February 28, 1990Date of Patent: April 23, 1991Inventor: Takeo Ikeda
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Patent number: 4101218Abstract: An electronic copying apparatus comprises a movable optical unit with a mirror lens defining a first light path between an original and the mirror lens and a second light path between the mirror lens and a photosensitive body, which include a ratio of optical distances controlled according to the copying magnification, and driving belts to move the photosensitive body according to the correlation as followsV.sub.P = .vertline.V.sub.L (1-.alpha.).vertline.where V.sub.P is a moving speed of the photosensitive body, V.sub.L is a moving speed of the optical unit and .alpha. is a copying magnification.Type: GrantFiled: March 23, 1977Date of Patent: July 18, 1978Assignee: Tokyo Shibaura Electric Co., Ltd.Inventors: Ryoji Saruwatari, Fumio Tamakawa, Takeo Ikeda, Norio Misawa