Patents by Inventor Yoshihiro Yokote
Yoshihiro Yokote 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: 20120120484Abstract: Provided is a projection optical system for an ultra-short focus image projection device. The disclosed projection optical system includes a first optical system for zooming an image formed by an image display device to form a first intermediate image, a second optical system for enlarging the first intermediate image to form a second intermediate image, and a reflection optical system for reflecting light which forms the second intermediate image. An optical axis of the first optical system translates parallel with respect to an optical axis of the second optical system in a direction perpendicular to the optical axis of the first optical system.Type: ApplicationFiled: November 16, 2011Publication date: May 17, 2012Applicant: SAMSUNG ELECTRONICS CO., LTDInventors: Osamu KONUMA, Katsutoshi SASAKI, Yoshihiro YOKOTE
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Publication number: 20110267589Abstract: A projection-type image display device includes an image light generator configured to generate image light, a projection optics configured to project the image light onto a screen. The projection optics includes a reflection mirror configured to reflect the image light toward the screen, the image light outputted from the image light generator. A projection-type image display device includes a protective cover provided on an optical path of the image light reflected by the reflection mirror. The protective cover has a transmissive region transmitting the image light reflected by the reflection mirror.Type: ApplicationFiled: July 18, 2011Publication date: November 3, 2011Applicant: SANYO ELECTRIC CO., LTD.Inventors: Ryuhei AMANO, Takashi MIWA, Yoshihiro YOKOTE
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Patent number: 8049822Abstract: There are provided a write light valve for generating image-writing light by modulating write light, a driver for writing images into the write light valve based on image data, read light valves for each color for generating respective color image lights by modulating each received color illumination light, an imaging lens group for guiding the image-writing light emitted from the write light valve to the respective read light valves, a dichroic cube for combining together color image lights emitted from the respective read light valves, a projection lens for projecting each color image light combined together. The imaging lens group has a distortion aberration which reduces or cancels out a distortion aberration of the projection lens.Type: GrantFiled: February 27, 2007Date of Patent: November 1, 2011Assignee: Sanyo Electric Co., Ltd.Inventors: Ryuhei Amano, Yoshihiro Yokote, Hideyuki Kanayama, Kazuhiro Arai, Takashi Ikeda, Takashi Miwa
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Patent number: 8002419Abstract: A projection-type image display device includes an image light generator configured to generate image light, a projection optics configured to project the image light onto a screen. The projection optics includes a reflection mirror configured to reflect the image light toward the screen, the image light outputted from the image light generator. A projection-type image display device includes a protective cover provided on an optical path of the image light reflected by the reflection mirror. The protective cover has a transmissive region transmitting the image light reflected by the reflection mirror.Type: GrantFiled: February 18, 2010Date of Patent: August 23, 2011Assignee: Sanyo Electric Co., Ltd.Inventors: Ryuhei Amano, Takashi Miwa, Yoshihiro Yokote
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Patent number: 7993011Abstract: A projection lens unit and a projection mirror unit are moved relative to an illumination optical system, between a first position where an image is projected in a shape that is longer along a direction of projection onto a projection plane and a second position where an image is projected in a shape that is longer along a direction perpendicular to the direction of projection onto the projection plane. When the projection lens unit and the projection mirror unit are located in the first position, a vertically long image is projected onto the projection plane (portrait display). In this state, when the projection lens unit and the projection mirror unit are moved to the second position, a horizontally long image is projected onto the projection plane (landscape display).Type: GrantFiled: April 17, 2008Date of Patent: August 9, 2011Assignee: SANYO Electric Co., Ltd.Inventors: Takashi Ikeda, Hideyuki Kanayama, Yoshihiro Yokote
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Patent number: 7946711Abstract: An illumination device includes a light source part for emitting light with an intensity distribution approximately uniform in a first direction and a fly-eye lens into which the light is entered. The light source part and the fly-eye lens are arranged such that the first direction is inclined with respect to vertical and horizontal directions of arrangement of lens cells in the fly-eye lens. Since illumination light is entered into the fly-eye lens in a state of inclining with respect to the fly-eye lens, the number of superimposition patterns on the fly-eye lens is increased and illuminance non-uniformity in illumination light is suppressed.Type: GrantFiled: September 2, 2008Date of Patent: May 24, 2011Assignee: SANYO Electric Co., Ltd.Inventors: Michihiro Okuda, Shinya Matsumoto, Yoshihiro Yokote
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Publication number: 20110069285Abstract: An illumination apparatus includes; a first solid-state light source, a second solid-state light source, a first arrangement member provided with a first arrangement surface, a second arrangement member provided with a second arrangement surface, an optical unit configured to reduce a dispersion angle of a light beam. The first solid-state light source emits a light beam having a first directivity. The second solid-state light source emits a light beam having a second directivity greater than the first directivity. A distance from the second arrangement surface to the second light-entering surface is longer than a distance from the first arrangement surface to the first light-entering surface.Type: ApplicationFiled: November 30, 2010Publication date: March 24, 2011Applicant: SANYO ELECTRIC CO., LTD.Inventors: Shinya MATSUMOTO, Yoshihiro YOKOTE, Makoto MAEDA
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Patent number: 7887198Abstract: An optical device includes a light source, a light valve and a projection lens configured to enlarge an image to be displayed on the light valve. The light valve is disposed in the vicinity of an object plane of the projection lens. The light source illuminates a peripheral portion more brightly than an optical axis portion, in a plane parallel to the object plane located in the vicinity of the object plane of the projection lens. The optical axis portion is a portion where an optical axis passes through and the peripheral portion is a portion located in the periphery of an optical axis portion.Type: GrantFiled: June 28, 2006Date of Patent: February 15, 2011Assignee: Sanyo Electric Co., Ltd.Inventor: Yoshihiro Yokote
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Patent number: 7863555Abstract: An illumination apparatus includes; a first solid-state light source, a second solid-state light source, a first arrangement member provided with a first arrangement surface, a second arrangement member provided with a second arrangement surface, an optical unit configured to reduce a dispersion angle of a light beam. The first solid-state light source emits a light beam having a first directivity. The second solid-state light source emits a light beam having a second directivity greater than the first directivity. A distance from the second arrangement surface to the second light-entering surface is longer than a distance from the first arrangement surface to the first light-entering surface.Type: GrantFiled: December 13, 2007Date of Patent: January 4, 2011Assignee: Sanyo Electric Co., Ltd.Inventors: Shinya Matsumoto, Yoshihiro Yokote, Makoto Maeda
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Patent number: 7862184Abstract: A projection display apparatus is provided with a projection distance adjustment mechanism for adjusting a distance between a projection plane and an emitting position of projection light, and provided with a focus adjustment mechanism for making a focus adjustment of a projection image with respect to the projection plane. The focus adjustment mechanism is driven such that a projection image is properly focused onto the projection plane in accordance with the distance between the projection plane and the emitting position.Type: GrantFiled: February 4, 2008Date of Patent: January 4, 2011Assignee: SANYO Electric Co., Ltd.Inventors: Yoshihiro Yokote, Takashi Miwa, Ryuhei Amano, Michihiro Okuda
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Patent number: 7795822Abstract: A light source controller includes a light source driver, a light amount sensor, a memory configured to store property information indicating a relationship between the drive current and the outgoing light amount for each level of the environmental temperature of the solid-state light source, and a controller configured to control the drive current supplied from the light source driver. The controller obtains the property information corresponding to the environmental temperature of the solid-state light source according to the relationship between the drive current and the outgoing light amount, and controls the drive current according to the obtained property information so as to bring the outgoing light amount close to a target light amount.Type: GrantFiled: May 11, 2007Date of Patent: September 14, 2010Assignee: Sanyo Electric Co., Ltd.Inventors: Kazuhiro Arai, Yoshihiro Yokote, Ryuhei Amano, Masutaka Inoue
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Publication number: 20100201179Abstract: A pretensioner (1) for a seat belt system (7) of an automobile comprises a gas generator (2), a gas pipe (3), a piston (5) and a coupling mechanism (6). The gas generator (2) is adapted to generate a high-pressure gas when a shock occurs in the automobile due to a collision, a sudden stop, etc. The gas pipe (3) is formed to receive therein the gas generator (2). The gas pipe (3) is adapted to guide the high-pressure gas released from the gas generator (2) to the piston (5). The piston (5) is adapted to be moved or displaced by a pressure of the high-pressure gas guided by the gas pipe (3). The coupling mechanism (6) is connected to each of the piston (5) and a buckle (8) of the seat belt system (7). The coupling mechanism (6) is adapted to wind up or pull a seat belt (9) in accordance with the movement of the piston (5) to increase a restraining force of the seat belt (9).Type: ApplicationFiled: July 6, 2007Publication date: August 12, 2010Inventors: Yoshihiro Yokote, Kazuhiko Tanaka, Hiroyuki Kimura
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Publication number: 20100182575Abstract: A projection-type image display device includes an image light generator configured to generate image light, a projection optics configured to project the image light onto a screen. The projection optics includes a s reflection mirror configured to reflect the image light toward the screen, the image light outputted from the image light generator. A projection-type image display device includes a protective cover provided on an optical path of the image light reflected by the reflection mirror. The protective cover has a transmissive region transmitting the image light reflected by the reflection mirror.Type: ApplicationFiled: February 18, 2010Publication date: July 22, 2010Applicant: SANYO ELECTRIC CO., LTD.Inventors: Ryuhei Amano, Takashi Miwa, Yoshihiro Yokote
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Patent number: 7692604Abstract: Modulated light (image light) which has been modulated by passing through a liquid crystal display panel passes through an apical angle variable prism (so-called, a vari-angle prism) and then is enlarged and projected by a projection lens. The apical angle variable prism is configured to change the prism apical angle with, for example, an electromagnetic actuator. The microcomputer calculates a projection optical axis correction value based on hand shake detection signals from a sensor and controls the aforementioned actuator based on the correction value. With this control, shakes of projected images due to hand shakes are prevented.Type: GrantFiled: September 29, 2004Date of Patent: April 6, 2010Assignee: Sanyo Electric Co., Ltd.Inventors: Yoshihiro Yokote, Shouichi Yoshii, Hideyuki Kanayama, Takashi Ikeda
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Publication number: 20100060618Abstract: An image display device includes a light source which emits laser light; an optical system which is operable to switch between a direct viewing mode of modulating the laser light and displaying the modulated light on a display section, and a projection mode of modulating the laser light and projecting the modulated light on a projection plane; and a control circuit which controls the optical system. The control circuit sets the optical system to the direct viewing mode at the time of activating an electric power source of the image display device.Type: ApplicationFiled: November 18, 2009Publication date: March 11, 2010Applicant: SANYO ELECTRIC CO., LTD.Inventors: Michihiro Okuda, Yoshihiro Yokote, Ryoko Kubo, Takaaki Abe, Shinya Matsumoto
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Publication number: 20100060809Abstract: An image display device includes a light source which emits laser light; an optical element which is operable to switch between a first state for reducing a coherence of the laser light and a second state for substantially maintaining the coherence of the laser light; a switching control circuit which controls the optical element; an imager which modulates the laser light transmitted through the optical element; and a modulation control circuit which controls the imager based on an image signal. The modulation control circuit causes the imager to render an image pattern for generating an image by changing alight amount at each pixel position when the optical element is in the first state, and causes the imager to render a hologram pattern for generating an image by diffraction when the optical element is in the second state.Type: ApplicationFiled: November 18, 2009Publication date: March 11, 2010Applicant: SANYO ELECTRIC CO., LTD.Inventors: Michihiro Okuda, Yoshihiro Yokote, Ryoko Kubo, Takaaki Abe, Shinya Matsumoto
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Patent number: 7658497Abstract: A guide convex portion is formed on a base plate in parallel to an illumination optical axis. Further, a fixed-side supporting member is provided in the base plate. A first opening is formed in an upright portion of the fixed-side supporting member. A slide supporting member can be provided on the base plate. A second opening is formed in the upright portion of the slide supporting member. By inserting a tapered rod into the second opening at its light incidence side and by moving the slide supporting member along the aforementioned guide convex portion, the slide supporting member is stopped at a predetermined position and, at this position, the slide supporting member is fixed.Type: GrantFiled: January 3, 2007Date of Patent: February 9, 2010Assignee: Sanyo Electric Co., LtdInventors: Takashi Miwa, Nobuyuki Kondou, Yoshihiro Yokote
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Patent number: 7543962Abstract: A projection-type image display device includes three light sources respectively configured to emit a different colored outgoing light, a light combining unit configured to combine outgoing lights, and a projection unit configured to project a combined light combined by the light combining it. The projection-type image display device includes a first cooler configured to cool a first light source of the three light sources, and a second cooler configured to cool a second and a third light source of the three light sources except the first light source.Type: GrantFiled: April 26, 2007Date of Patent: June 9, 2009Assignee: Sanyo Electric Co., Ltd.Inventors: Takashi Miwa, Kazuhiro Arai, Yoshihiro Yokote
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Publication number: 20090059177Abstract: An illumination device includes a light source part for emitting light with an intensity distribution approximately uniform in a first direction and a fly-eye lens into which the light is entered. The light source part and the fly-eye lens are arranged such that the first direction is inclined with respect to vertical and horizontal directions of arrangement of lens cells in the fly-eye lens. Since illumination light is entered into the fly-eye lens in a state of inclining with respect to the fly-eye lens, the number of superimposition patterns on the fly-eye lens is increased and illuminance non-uniformity in illumination light is suppressed.Type: ApplicationFiled: September 2, 2008Publication date: March 5, 2009Applicant: SANYO ELECTRIC CO., LTD.Inventors: Michihiro OKUDA, Shinya Matsumoto, Yoshihiro Yokote
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Patent number: 7465053Abstract: A lens array wheel 4 receives light irradiated in a direction parallel to its rotation axis, to cyclically deflect the light. On each of liquid crystal display panels 7R, 7G, and 7B, the light is circularly scrolled, the effect of substantial intermittent illumination is produced, and hold blurring is reduced. A panel driver 15 starts to feed a pixel-driving signal in the succeeding frame to a pixel existing at a position, through which an illuminating area passes, on each of the liquid crystal display panels 7R, 7G, and 7B.Type: GrantFiled: March 26, 2003Date of Patent: December 16, 2008Assignee: Sanyo Electric Co., Ltd.Inventors: Mineki Taoka, Haruhiko Murata, Toshiya Iinuma, Koji Ishii, Kazuki Hashizumi, Kazuhiro Arai, Hideyuki Kanayama, Takashi Ikeda, Shouichi Yoshii, Yoshihiro Yokote, Yasuo Funazou