Patents by Inventor Tsuyoshi Kasahara
Tsuyoshi Kasahara 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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Patent number: 10901209Abstract: The present invention suppresses an increase in optical system curvature, thereby enabling miniaturization. An image forming unit reflects image light beams, which were projected from each region along a first direction of a display, towards a reflection unit so that the image light beams intersect between the image forming unit and the reflection unit. A light distribution adjustment unit is disposed between a light source and a display, and in the first direction, adjusts the orientation of illumination light beams projected from the light source so that the illumination light beams are incident on the display as convergence light.Type: GrantFiled: April 13, 2017Date of Patent: January 26, 2021Assignee: NIPPON SEIKI CO., LTD.Inventors: Tsuyoshi Kasahara, Yuichi Takahashi
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Patent number: 10549637Abstract: The purpose of the present invention is to efficiently orient image light toward an observer. A display device outputs projection light for displaying an image. A transmission type screen forms an image of the projection light and diffuses the same as image light. A projection lens enlarges projection light and forms the image on the transmission type screen. A light distribution adjustment means is disposed between the transmission type screen and the projection lens and adjusts the light distribution of the image light output by the transmission type screen for each region by refracting the projection light.Type: GrantFiled: October 13, 2015Date of Patent: February 4, 2020Assignee: NIPPON SEIKI CO., LTD.Inventors: Tsuyoshi Kasahara, Kazuya Matsuura, Takayuki Hatano
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Publication number: 20190121128Abstract: The present invention suppresses an increase in optical system curvature, thereby enabling miniaturization. An image forming unit reflects image light beams, which were projected from each region along a first direction of a display, towards a reflection unit so that the image light beams intersect between the image forming unit and the reflection unit. A light distribution adjustment unit is disposed between a light source and a display, and in the first direction, adjusts the orientation of illumination light beams projected from the light source so that the illumination light beams are incident on the display as convergence light.Type: ApplicationFiled: April 13, 2017Publication date: April 25, 2019Inventors: Tsuyoshi KASAHARA, Yuichi TAKAHASHI
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Publication number: 20190033590Abstract: The purpose of the present invention is to provide a head-up display device which reduces variations in the display position of a virtual image. This head-up display device is provided with: a projector that emits display light L representing an image; an optical system that displays a virtual image by projecting the display light L from the projector toward a windshield; and a optical path setting unit that sets the position of the virtual image when the head-up display device is activated to a preset regular position by adjusting the light path of the display light L through the optical system.Type: ApplicationFiled: January 16, 2017Publication date: January 31, 2019Inventors: Tsuyoshi KASAHARA, Yuichi TAKAHASHI
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Patent number: 9989760Abstract: Provided is a headup display apparatus that is capable of accurately outputting stable display light, a collimator lens, collimates image light, as parallel light, said image light having been outputted from a display means. A parallel light guide has a first surface, which has the parallel light from the collimator lens inputted thereto, and which reflects a part of the parallel light and transmits a part of the parallel light as transmitted light beams, and a second surface that reflects the parallel light to the first surface, said first surface and second surface being provided in parallel to each other. The parallel light guide outputs the transmitted light beams from the first surface, and the parallel light is inputted to the first surface at a predetermined angle.Type: GrantFiled: March 11, 2014Date of Patent: June 5, 2018Assignee: NIPPON SEIKI CO., LTD.Inventors: Tsuyoshi Kasahara, Yuichi Takahashi, Takashi Yamazoe
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Publication number: 20170225568Abstract: The purpose of the present invention is to efficiently orient image light toward an observer. A display device outputs projection light for displaying an image. A transmission type screen forms an image of the projection light and diffuses the same as image light. A projection lens enlarges projection light and forms the image on the transmission type screen. A light distribution adjustment means is disposed between the transmission type screen and the projection lens and adjusts the light distribution of the image light output by the transmission type screen for each region by refracting the projection light.Type: ApplicationFiled: October 13, 2015Publication date: August 10, 2017Applicant: NIPPON SEIKI CO., LTD.Inventors: Tsuyoshi KASAHARA, Kazuya MATSUURA, Takayuki HATANO
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Publication number: 20170113617Abstract: A blind spot assistance device whereby an image of a blind spot area can be more easily shown continuing on from an image directly viewed by a viewer. The blind spot assistance device shows an image of a blind spot area obscured by an obstacle and comprises a pair of flat mirrors arranged so as to be mutually facing, said pair of mirrors being: a semi-transmissive flat mirror to which light indicating an image is incident, said mirror provided on the viewer side, reflecting some of the light, and transmitting some of the light; and a flat mirror that reflects the light towards the semi-transmissive mirror. The semi-transmissive flat mirror is arranged having a prescribed angle open on the viewer side, relative to the flat mirror.Type: ApplicationFiled: May 29, 2015Publication date: April 27, 2017Inventors: Masato OBATA, Yuichi TAKAHASHI, Tsuyoshi KASAHARA
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Patent number: 9507152Abstract: Provided is a head-up display device capable of projecting a virtual image on a curved surface. a curved parallel mirror receives parallel beams from a collimator lens and outputs a plurality of transmitted beams by being configured such that a semi-transparent curved mirror and a curved mirror are arranged opposing each other, said semi-transparent curved mirror reflecting a portion of the parallel beams while allowing the other portion to pass through as transmitted beams, and said curved mirror reflecting parallel beams toward the semi-transparent curved mirror. The curved parallel mirror has a convex curved shape toward the transmission side such that when the outputted plurality of transmitted beams are reflected by a curved surface, the reflected transmitted beams become display beams representing a virtual image substantially parallel to a first plane.Type: GrantFiled: February 14, 2014Date of Patent: November 29, 2016Assignee: NIPPON SEIKI CO., LTD.Inventors: Tsuyoshi Kasahara, Yuichi Takahashi, Takashi Yamazoe
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Publication number: 20160291325Abstract: Provided is a head-up display device capable of projecting a virtual image on a curved surface. a curved parallel mirror receives parallel beams from a collimator lens and outputs a plurality of transmitted beams by being configured such that a semi-transparent curved mirror and a curved mirror are arranged opposing each other, said semi-transparent curved mirror reflecting a portion of the parallel beams while allowing the other portion to pass through as transmitted beams, and said curved mirror reflecting parallel beams toward the semi-transparent curved mirror. The curved parallel mirror has a convex curved shape toward the transmission side such that when the outputted plurality of transmitted beams are reflected by a curved surface, the reflected transmitted beams become display beams representing a virtual image substantially parallel to a first plane.Type: ApplicationFiled: February 14, 2014Publication date: October 6, 2016Inventors: Tsuyoshi KASAHARA, Yuichi TAKAHASHI, Takashi YAMAZOE
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Publication number: 20160048017Abstract: Provided is a headup display apparatus that is capable of accurately outputting stable display light, a collimator lens, collimates image light, as parallel light, said image light having been outputted from a display means. A parallel light guide has a first surface, which has the parallel light from the collimator lens inputted thereto, and which reflects a part of the parallel light and transmits a part of the parallel light as transmitted light beams, and a second surface that reflects the parallel light to the first surface, said first surface and second surface being provided in parallel to each other. The parallel light guide outputs the transmitted light beams from the first surface, and the parallel light is inputted to the first surface at a predetermined angle.Type: ApplicationFiled: March 11, 2014Publication date: February 18, 2016Inventors: Tsuyoshi KASAHARA, Yuichi TAKAHASHI, Takashi YAMAZOE
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Publication number: 20160004081Abstract: Provided is a headup display device capable of projecting a virtual image onto a curved surface. A headup display device comprises: a display means for emitting display light representing an image; a pair of parallel flat mirrors comprising a parallel arrangement of a flat semi-transparent mirror and a flat mirror, said flat semi-transparent mirror receiving the display light emitted from the display means and reflecting a part of the display light while transmitting the other part of the display light, and said flat mirror reflecting the display light toward the flat semi-transparent mirror; and a curved mirror for projecting an image represented by the display light onto a curved surface as a virtual image by reflecting the display light transmitted through the flat semi-transparent mirror onto the curved surface.Type: ApplicationFiled: February 14, 2014Publication date: January 7, 2016Inventors: Tsuyoshi KASAHARA, Takashi YAMAZOE
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Patent number: 8790690Abstract: A patch containing a support and an adhesive layer formed on at least one surface of the support, wherein the adhesive layer contains an elastomer obtained by crosslinking a polymer having a butadiene skeleton in the presence of organic peroxide, wherein the patch has good adhesion property and maintain this quality for a long time.Type: GrantFiled: July 17, 2009Date of Patent: July 29, 2014Assignee: Nitto Denko CorporationInventors: Miki Funahashi, Atsushi Hamada, Tsuyoshi Kasahara, Jun Ishikura
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Patent number: 8361493Abstract: The patch according to an embodiment of the present invention includes: a support; and a pressure-sensitive adhesive layer on at least one surface of the support, wherein: the pressure-sensitive adhesive layer contains an acrylic copolymer obtained by copolymerizing monomer components containing (a) at least one kind of a monomer of a (meth)acrylic acid alkyl ester and (b) at least one kind of a monomer of an N-hydroxyalkyl(meth)acrylamide; a content of the (meth)acrylic acid alkyl ester monomer (a) with respect to a total amount of the monomer components is 50 wt % to 90 wt % and a content of the N-hydroxyalkyl(meth)acrylamide monomer (b) with respect to the total amount is 1 wt % to 20 wt %; and the monomer components are substantially free of a monomer having a carboxyl group.Type: GrantFiled: November 12, 2010Date of Patent: January 29, 2013Assignee: Nitto Denko CorporationInventors: Jun Ishikura, Raito Funayama, Yu Tachikawa, Junichi Sekiya, Tsuyoshi Kasahara, Ryo Hashino, Satoshi Ameyama, Hidetoshi Kuroda
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Patent number: 8158755Abstract: A method of producing gelatin particles, including immersing a discharge spout in a hydrophobic solvent, discharging an aqueous gelatin solution from a nozzle tip into the hydrophobic solvent, and lifting, after discharging, the nozzle from the hydrophobic solvent, which can produce particles having an object particle size in a high yield, and can produce gelatin particles that do not essentially require a classification operation.Type: GrantFiled: September 25, 2009Date of Patent: April 17, 2012Assignee: Nitto Denko CorporationInventors: Eriko Konno, Tatsumi Ishikawa, Tsuyoshi Kasahara
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Publication number: 20110124833Abstract: There is provided a medical pressure-sensitive adhesive composition including an acrylic copolymer obtained by copolymerizing monomer components containing (a) at least one kind of a monomer of a (meth)acrylic acid alkyl ester and (b) at least one kind of a monomer of an N-hydroxyalkyl(meth)acrylamide, wherein: a content of the (meth)acrylic acid alkyl ester monomer (a) with respect to a total amount of the monomer components is 50 weight % to 99.9 weight % and a content of the N-hydroxyalkyl(meth)acrylamide monomer (b) with respect to the total amount is 0.1 weight % to 20 weight %; and the monomer components are substantially free of a monomer having a carboxyl group. The medical pressure-sensitive adhesive composition of the present invention is particularly suitable for applications such as medical patches and patch preparations.Type: ApplicationFiled: November 12, 2010Publication date: May 26, 2011Applicant: NITTO DENKO CORPORATIONInventors: Jun ISHIKURA, Raito Funayama, Yu Tachikawa, Junichi Sekiya, Tsuyoshi Kasahara, Masayuki Okamoto, Masahito Niwa
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Publication number: 20110123598Abstract: The patch according to an embodiment of the present invention includes: a support; and a pressure-sensitive adhesive layer on at least one surface of the support, wherein: the pressure-sensitive adhesive layer contains an acrylic copolymer obtained by copolymerizing monomer components containing (a) at least one kind of a monomer of a (meth)acrylic acid alkyl ester and (b) at least one kind of a monomer of an N-hydroxyalkyl(meth)acrylamide; a content of the (meth)acrylic acid alkyl ester monomer (a) with respect to a total amount of the monomer components is 50 wt % to 90 wt % and a content of the N-hydroxyalkyl(meth)acrylamide monomer (b) with respect to the total amount is 1 wt % to 20 wt %; and the monomer components are substantially free of a monomer having a carboxyl group.Type: ApplicationFiled: November 12, 2010Publication date: May 26, 2011Applicant: NITTO DENKO CORPORATIONInventors: Jun ISHIKURA, Raito Funayama, Yu Tachikawa, Junichi Sekiya, Tsuyoshi Kasahara, Ryo Hashino, Satoshi Ameyama, Hidetoshi Kuroda
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Publication number: 20100260826Abstract: Provided are a patch and a patch preparation having an adhesive layer on at least one surface of a support, and particularly, a patch and a patch preparation superior in skin adhesive force, and causing less adhesive residue on the skin surface. A patch having a support and an adhesive layer formed on at least one surface of the support, wherein the adhesive layer is obtained by crosslinking a first polymer having a butadiene skeleton portion and a second polymer different from the first polymer in the presence of an organic peroxide.Type: ApplicationFiled: April 7, 2010Publication date: October 14, 2010Inventors: Miki Makabe, Tsuyoshi Kasahara, Atsushi Hamada, Jun Ishikura
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Publication number: 20100255071Abstract: Provided are a patch and a patch preparation having an adhesive layer on at least one surface of a support, and particularly, a patch and a patch preparation superior in skin adhesive force, and causing less adhesive residue on the skin surface. A patch having a support and an adhesive layer formed on at least one surface of the support, wherein the adhesive layer contains an elastomer obtained by crosslinking a polymer having a butadiene skeleton in the presence of an organic peroxide, and the ratio of the weight of a toluene-insoluble component in the adhesive layer to the total weight of the adhesive layer is 5-32 wt %.Type: ApplicationFiled: April 6, 2010Publication date: October 7, 2010Inventors: Miki Makabe, Tsuyoshi Kasahara, Atsushi Hamada, Jun Ishikura
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Publication number: 20100247616Abstract: The present invention provides a patch and a patch preparation having an adhesive layer with a sufficient thickness, as well as appropriate skin adhesiveness and flexibility, which resist falling off from the skin even when a load is applied to the side opposite to the surface of the patch or patch preparation to be adhered to the skin, i.e., an exposed surface of a support of the patch or patch preparation, and show low irritation to the skin; an adhesive layer, which is obtained by crosslinking a liquid rubber having a crosslinkable functional group in a molecule in the presence of a crosslinking agent having a functional group number of 3 or below and a catalyst, on at least one surface of a support; and a patch preparation having an adhesive layer containing a pharmaceutical agent.Type: ApplicationFiled: March 22, 2010Publication date: September 30, 2010Applicant: Nitto Denko CorporationInventors: Yoshio FUNAKOSHI, Tsuyoshi KASAHARA, Atsushi HAMADA, Jun ISHIKURA
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Publication number: 20100144901Abstract: The present invention can provide a composition for a medical material or a hygiene material, which can retain a considerable amount of a chemical substance such as a drug and the like or an organic liquid component, is associated with less limitation on molding, does not easily drop off when adhered to the skin, provides a better feeling during adhesion to the skin, produces decreased adhesive residue when detached from the skin, and shows good followability to the skin. The present invention provides a gel composition obtained by crosslinking a composition for gel preparation comprising a liquid rubber having a crosslinkable functional group in a molecule and 34.6-64.6 wt % of an organic liquid component relative to the total weight of the composition for gel preparation.Type: ApplicationFiled: May 27, 2009Publication date: June 10, 2010Inventors: Yoshio Funakoshi, Atsushi Hamada, Jun Ishikura, Tsuyoshi Kasahara