Patents by Inventor Kumpei Oda
Kumpei Oda 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: 6865834Abstract: A display apparatus has a lens sheet with a plurality of unit columnar lenses arranged so as to be parallel to one another, and is disposed on the observation side of a display panel, spaced therefrom by a layer of air. The direction of the ridge lines of the unit columnar lenses of the lens sheet, seen from the observation side, are non-parallel to the direction of an edge of the display panel.Type: GrantFiled: October 24, 2002Date of Patent: March 15, 2005Assignee: Dai Nippon Printing Co., Ltd.Inventors: Kumpei Oda, Humihiro Arakawa, Keiji Kashima
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Patent number: 6816312Abstract: A lenticular lens sheet having (1) a light-transmitting lens sheet body with a lenticular lens group formed of multiple lenticular lenses placed on a surface of the body and a silver salt emulsion light-shielding layer laminated to the other surface of the light-transmitting lens sheet body. Light-transmitting areas in the light-shielding layer correspond to light-converging parts of the lenticular lenses on the body. The positions of the light-shielding areas correspond to non-light-converging parts of the lenticular lenses. The light-shielding characteristics result from the darkened silver dispersed in the silver salt emulsion. A method for making the lenticular lens sheet is disclosed also.Type: GrantFiled: August 22, 2003Date of Patent: November 9, 2004Assignee: Dai Nippon Printing Co., Ltd.Inventors: Kumpei Oda, Masashi Nishiyama, Shinichi Handa, Yoshiyuki Yamashita
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Patent number: 6762883Abstract: A lenticular lens sheet having an entrance surface and an exit surface comprises a base part, an entrance lens part forming the entrance surface and having an array of a plurality of convex lens elements capable of gathering light rays. A tinted layer is formed at least in a portion of the entrance lens part near the entrance surface. A light absorbing layer is formed in light-nongathering regions in the exit surface in which light rays refracted by the convex lens elements do not gather.Type: GrantFiled: August 28, 2001Date of Patent: July 13, 2004Assignee: Dai Nippon Printing Co., Ltd.Inventors: Yoshiki Yoshida, Kumpei Oda, Hitomu Watanabe
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Patent number: 6754005Abstract: This invention is a lenticular lens sheet including an incidence plane that has a plurality of lens surfaces and an outgoing plane. A focal length at a center portion of each of the plurality of lens surfaces is longer. A focal length at an edge portion of each of the plurality of lens surfaces is shorter.Type: GrantFiled: April 15, 2002Date of Patent: June 22, 2004Assignee: Dai Nippon Printing Co., Ltd.Inventors: Masahiro Goto, Kumpei Oda
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Publication number: 20040070837Abstract: A lens sheet body 2 is prepared by laminating, to a transparent film 6, a lenticular lens layer 7 having a plurality of lenticular lenses arranged, and a silver salt emulsion layer 10 is laminated to this lens sheet body 2 on its light-emerging surface side. For example, lamination of the silver salt emulsion layer 10 to the lens sheet body 2 is conducted by backing a silver salt emulsion layer 10 with a transparent film 8 to obtain a silver salt photosensitive film 5 and adhering this silver salt photosensitive film 5 to the lens sheet body 2 with the use of an adhesive agent layer 9, with the transparent film 8 of the silver salt photosensitive film 5 facing the lens sheet body 2. Next, parallel rays 40 are applied to the lens sheet body 2 from the lenticular lens layer 7 side to expose those parts of the silver salt emulsion layer 10 that correspond to the light-converging parts of the lenticular lenses 3a. Thereafter, the silver salt emulsion layer 10 exposed is developed.Type: ApplicationFiled: August 22, 2003Publication date: April 15, 2004Inventors: Kumpei Oda, Masashi Nishiyama, Shinichi Handa, Yoshiyuki Yamashita
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Patent number: 6650481Abstract: A lens sheet of the present invention comprises: a lens layer having a plurality of unit lenses, each of which is adapted to fully reflect a part of an incident light beam on a fully reflecting portion so as to emit it from a light emitting portion, arranged in a one- or two-dimensional direction on a light emitting side; and reflection attenuating layers for reflecting the light beam incident from an incident light side and attenuating the light beam incident from the light emitting side, the reflection attenuating layers being formed of a material, which can form the layers via a vacuum film forming method, on the fully reflecting portion.Type: GrantFiled: April 15, 2002Date of Patent: November 18, 2003Assignee: Dai Nippon Printing Co., Ltd.Inventors: Futoshi Osawa, Kumpei Oda, Takanori Oboshi, Masafumi Hayashi
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Patent number: 6597502Abstract: A rear projection screen including a Fresnel lens sheet arranged on the projection side, and a lenticular lens sheet arranged on the observation side. The Fresnel lens sheet has a lenticular lens for vertical diffusion on its light-entering side. The lenticular lens for vertical diffusion contains a plurality of convex lenses that extend horizontally, and these plural convex lenses are arranged with a constant pitch. Further, the diffusion angle of the lenticular lens for vertical diffusion continuously increases, and, at the same time, the direction of diffusion is gradually inclined to the central part side as the distance from the central part toward each of the edges on the screen surface increases. The diffusion properties (the angle and direction of diffusion) of the lenticular lens thus continuously vary between the central part and edges of the screen surface.Type: GrantFiled: August 7, 2001Date of Patent: July 22, 2003Assignee: Dai Nippon Printing Co., Ltd.Inventors: Yoshiki Takahashi, Masahiro Goto, Hitomu Watanabe, Makoto Honda, Kumpei Oda, Katsunori Takahashi
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Publication number: 20030129549Abstract: A direct positive silver halide photographic light-sensitive material is used for forming a light-absorbing layer of a lenticular lens sheet that includes a film-form substrate and a plurality of light input lenses provided on a light input side of the substrate, the light absorbing layer (black stripes) being provided on a light output side of the substrate in a region other than a condensing region of each of the light input lenses, the silver halide photographic light-sensitive material including a support, and at least one light-sensitive layer having light-sensitive silver halide grains with a grain size of 1 &mgr;m or less at a silver coat weight of 1.5 g/m2 or more on one side of the support, wherein on the side of the support opposite the light-sensitive layer there is no light absorbing layer, and by developing after exposing, from the side opposite the light-sensitive layer via the light input lenses, the light absorbing layer is formed based on a silver image.Type: ApplicationFiled: November 14, 2002Publication date: July 10, 2003Inventors: Junji Miyata, Kenichi Yasuda, Yasufumi Morimoto, Kumpei Oda, Masashi Nishiyama
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Publication number: 20030046839Abstract: A display apparatus has a lens sheet with a plurality of unit columnar lenses arranged so as to be parallel to one another, and is disposed on the observation side of a display panel, spaced therefrom by a layer of air. The direction of the ridge lines of the unit columnar lenses of the lens sheet, seen from the observation side, are non-parallel to the direction of an edge of the display panel.Type: ApplicationFiled: October 24, 2002Publication date: March 13, 2003Applicant: DAI NIPPON PRINTING CO., LTD.Inventors: Kumpei Oda, Humihiro Arakawa, Keiji Kashima
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Publication number: 20030002159Abstract: A lens sheet of the present invention comprises: a lens layer having a plurality of unit lenses, each of which is adapted to fully reflect a part of an incident light beam on a fully reflecting portion so as to emit it from a light emitting portion, arranged in a one- or two-dimensional direction on a light emitting side; and reflection attenuating layers for reflecting the light beam incident from an incident light side and attenuating the light beam incident from the light emitting side, the reflection attenuating layers being formed of a material, which can form the layers via a vacuum film forming method, on the fully reflecting portion.Type: ApplicationFiled: April 15, 2002Publication date: January 2, 2003Inventors: Futoshi Osawa, Kumpei Oda, Takanori Oboshi, Masafumi Hayashi
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Publication number: 20020149846Abstract: This invention is a lenticular lens sheet including an incidence plane that has a plurality of lens surfaces and an outgoing plane. A focal length at a center portion of each of the plurality of lens surfaces is longer. A focal length at an edge portion of each of the plurality of lens surfaces is shorter.Type: ApplicationFiled: April 15, 2002Publication date: October 17, 2002Applicant: Dai Nippon Printing Co., Ltd.Inventors: Masahiro Goto, Kumpei Oda
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Patent number: 6421181Abstract: A lenticular lens sheet having an entrance surface and an exit surface comprises a base part, an entrance lens part forming the entrance surface and having an array of a plurality of convex lens elements capable of gathering light rays. A tinted layer is formed at least in a portion of the entrance lens part near the entrance surface. A light absorbing layer is formed in light-nongathering regions in the exit surface in which light rays refracted by the convex lens elements do not gather.Type: GrantFiled: July 30, 1999Date of Patent: July 16, 2002Assignee: Dai Nippon Printing Co., Ltd.Inventors: Yoshiki Yoshida, Kumpei Oda, Hitomu Watanabe
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Publication number: 20020044360Abstract: A lenticular lens sheet having an entrance surface and an exit surface comprises a base part, an entrance lens part forming the entrance surface and having an array of a plurality of convex lens elements capable of gathering light rays. A tinted layer is formed at least in a portion of the entrance lens part near the entrance surface. A light absorbing layer is formed in light-nongathering regions in the exit surface in which light rays refracted by the convex lens elements do not gather.Type: ApplicationFiled: August 28, 2001Publication date: April 18, 2002Applicant: DAI NIPPON PRINTING CO., LTD.Inventors: Yoshiki Yoshida, K.O. Kumpei Oda, Hitomu Watanabe
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Publication number: 20010050812Abstract: A rear projection screen 10 comprises a Fresnel lens sheet 11 arranged on the projection side, and a lenticular lens sheet 12 arranged on the observation side. The Fresnel lens sheet 11 has a lenticular lens 11a for vertical diffusion on its light-entering side. The lenticular lens 11a for vertical diffusion contains a plurality of convex lenses which extend horizontally, and these plural convex lenses are arranged with a constant pitch. Further, the diffusion angle of the lenticular lens 11a for vertical diffusion continuously increases, and, at the same time, the direction of diffusion is gradually inclined to the central part side as the distance from the central part toward the edge side on the screen surface increases. The diffusion properties (the angle and direction of diffusion) of the lenticular lens 11a thus continuously vary between the central part and edge of the screen surface.Type: ApplicationFiled: August 7, 2001Publication date: December 13, 2001Applicant: DAI NIPPON PRINTING CO., LTD.Inventors: Yoshiki Takahashi, Masahiro Goto, Hitomu Watanabe, Makoto Honda, Kumpei Oda, Katsunori Takahashi
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Patent number: 6292294Abstract: A rear projection screen including a Fresnel lens sheet arranged on the projection side, and a lenticular lens sheet arranged on the observation side. The Fresnel lens sheet has a lenticular lens for vertical diffusion on its light-entering side. The lenticular lens for vertical diffusion containing a plurality of convex lenses that extend horizontally, and these plural convex lenses are arranged with a constant pitch. Further, the diffusion angle of the lenticular lens for vertical diffusion continuously increases, and, at the same time, the direction of diffusion is gradually inclined to the central part as the distance from the central part toward each of the edges on the screen surface increases. The diffusion properties (the angle and direction of diffusion) of the lenticular lens thus continuously vary between the central part and the edges of the screen surface.Type: GrantFiled: February 22, 1999Date of Patent: September 18, 2001Assignee: Dai Nippon Printing Co., Ltd.Inventors: Yoshiki Takahashi, Masahiro Goto, Hitomu Watanabe, Makoto Honda, Kumpei Oda, Katsunori Takahashi