Patents by Inventor Shinsuke Kohmoto
Shinsuke Kohmoto 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: 20040033070Abstract: A zoom lens for a camera having a between-the-lens shutter includes a motor for moving the lens along an optical axis in forward and rearward directions. A switch is operable by an operator to control operation of the motor for moving the lens from an initial position on the axis to a final stationary position that establishes the focal length of the lens. Control apparatus is responsive to the setting of the switch for operating the motor such that movement of the lens from its initial position to its final position always ends after the lens travels to its final position in a predetermined direction.Type: ApplicationFiled: July 10, 2003Publication date: February 19, 2004Applicant: PENTAX CorporationInventors: Keisuke Haraguchi, Shinsuke Kohmoto, Takeo Kobayashi, Shigeru Kondoh, Hideki Ohkubo, Norio Numako, Saburo Sugawara
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Patent number: 6094535Abstract: A zoom lens for a camera having a between-the-lens shutter includes a motor for moving the lens along an optical axis in forward and rearward directions. A switch is operable by an operator to control operation of the motor for moving the lens from an initial position on the axis to a final stationary position that establishes the focal length of the lens. Control apparatus is responsive to the setting of the switch for operating the motor such that movement of the lens from its initial position to its final position always ends after the lens travels to its final position in a predetermined direction.Type: GrantFiled: September 8, 1997Date of Patent: July 25, 2000Assignee: Asahi Kogaku Kogyo Kabushiki KaishaInventors: Keisuke Haraguchi, Shinsuke Kohmoto, Takeo Kobayashi, Shigeru Kondoh, Hideki Ohkubo, Norio Numako
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Patent number: 5966551Abstract: A lens shutter type of camera is disclosed in which a zoom lens is positioned in a lens block (1) which has a sector gear (15) rotatably associated with the lens block and with a rotatable cam ring (14). The cam ring and sector gear are rotatable in a substantially constant axial position. A movable finder optical assembly (8) and a movable strobe assembly (9) are movable in association with movement of the zoom lens. The zoom lens is movable between an extreme telephoto position and an extreme wide angle position, as well as into a fully collapsed lens position beyond the extreme wide angle position and a macro or close-up photographing position beyond the extreme telephoto position. When the camera is in its macro mode, a prism (P1) is inserted into the finder optical assembly to correct for parallax; the strobe assembly is moved to change its illumination angle; and an optical wedge (4e) is pivoted into the path between a light receiver (4) and a light emitter (3e).Type: GrantFiled: April 22, 1997Date of Patent: October 12, 1999Assignee: Asahi Kogaku Kogyo Kabushiki KaishaInventors: Keisuke Haraguchi, Shinsuke Kohmoto, Takeo Kobayashi, Shigeru Kondoh, Hideki Ohkubo, Norio Numako
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Patent number: 5897227Abstract: A zoom lens for a camera having a between-the-lens shutter includes a motor for moving the lens along an optical axis in forward and rearward directions. A switch is operable by an operator to control operation of the motor for moving the lens from an initial position on the axis to a final stationary position that establishes the focal length of the lens. Control apparatus is responsive to the setting of the switch for operating the motor such that movement of the lens from its initial position to its final position always ends after the lens travels to its final position in a predetermined direction.Type: GrantFiled: April 23, 1997Date of Patent: April 27, 1999Assignee: Asahi Kogaku Kogyo Kabushiki KaishaInventors: Keisuke Haraguchi, Shinsuke Kohmoto, Takeo Kobayashi, Shigeru Kondoh, Hideki Ohkubo, Norio Numako, Saburo Sugawara
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Patent number: 5774282Abstract: A lens position adjusting apparatus for adjusting an axial position of a rearmost lens group of a plurality of lens groups provided in a focal length variable lens upon assembly of the focal length variable lens is provided. The lens position adjusting apparatus includes a lens frame, a lens frame holder and an engagement tooth array portion. The lens frame holds the rearmost lens group. The lens frame holder engages with the lens frame through a threaded engagement. The engagement tooth array portion is formed along a rear end of the lens frame. The engagement tooth array portion consists of a plurality of engaging teeth. Each of the engaging teeth extends in a direction substantially parallel to an optical axis facing towards a rear of the focal length variable lens.Type: GrantFiled: July 30, 1996Date of Patent: June 30, 1998Assignee: Asahi Kogaku Kogyo Kabushiki KaishaInventors: Shinsuke Kohmoto, Norio Sato
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Patent number: 5740476Abstract: A zoom lens for a camera having a between-the-lens shutter includes a motor for moving the lens along an optical axis in forward and rearward directions. A switch is operable by an operator to control operation of the motor for moving the lens from an initial position on the axis to a final stationary position that establishes the focal length of the lens. Control apparatus is responsive to the setting of the switch for operating the motor such that movement of the lens from its initial position to its final position always ends after the lens travels to its final position in a predetermined direction.Type: GrantFiled: June 1, 1995Date of Patent: April 14, 1998Assignee: Asahi Kogaku Kogyo Kabushiki KaishaInventors: Keisuke Haraguchi, Shinsuke Kohmoto, Takeo Kobayashi, Shigeru Kondoh, Hideki Ohkubo, Norio Numako
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Patent number: 5713051Abstract: A lens shutter type of camera is disclosed in which a zoom lens is positioned in a lens block (1) which has a sector gear (15) rotatably associated with the lens block and with a rotatable cam ring (14). The cam ring and sector gear are rotatable in a substantially constant axial position. A movable finder optical assembly (8) and a movable strobe assembly (9) are movable in association with movement of the zoom lens. The zoom lens is movable between an extreme telephoto position and an extreme wide angle position, as well a into a fully collapsed lens position beyond the extreme wide angle position and a macro or close-up photographing position beyond the extreme telephoto position. When the camera is in its macro mode, a prism (P1) is inserted into the finder optical assembly to correct for parallax; the strobe assembly is moved to change its illumination angle; and an optical wedge (4e) is pivoted into the path between a light receiver (4) and a light emitter (3e).Type: GrantFiled: May 7, 1996Date of Patent: January 27, 1998Assignee: Asahi Kogaku Kogyo Kabushiki KaishaInventors: Keisuke Haraguchi, Shinsuke Kohmoto, Takeo Kobayashi, Shigeru Kondoh, Hideki Ohkubo, Norio Numako
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Patent number: 5673099Abstract: A lens shutter type of camera is disclosed in which a zoom lens is positioned in a lens block (1) which has a sector gear (15) rotatably associated with the lens block and with a rotatable cam ring (14). The cam ring and sector gear are rotatable in a substantially constant axial position. A movable finder optical assembly (8) and a movable strobe assembly (9) are movable in association with movement of the zoom lens. The zoom lens is movable between an extreme telephoto position and an extreme wide angle position, as well a into a fully collapsed lens position beyond the extreme wide angle position and a macro or close-up photographing position beyond the extreme telephoto position. When the camera is in its macro mode, a prism (P1) is inserted into the finder optical assembly to correct for parallax; the strobe assembly is moved to change its illumination angle; and an optical wedge (4e) is pivoted into the path between a light receiver (4) and a light emitter (3e).Type: GrantFiled: June 5, 1995Date of Patent: September 30, 1997Assignee: Asahi Kogaku Kogyo Kabushiki KaishaInventors: Keisuke Haraguchi, Shinsuke Kohmoto, Takeo Kobayashi, Shigeru Kondoh, Hideki Ohkubo, Norio Numako, Saburo Sugawara, Susao Nakamura, Hirofumi Matsuo, Katsuhiko Nomura, Etsuro Nishio, Haruo Ishii
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Patent number: 5659810Abstract: A zoom lens barrel is provided having a plurality of lens groups which are moved with respect to one another along a predetermined path. The zoom lens barrel comprises a driving barrel which rotates about an optical axis of the plurality of lens groups and at least three telescoping barrels which are moved in the direction of the optical axis by rotation of the driving barrel. Each telescoping barrel which is mounted on an inner periphery of another telescoping barrel of the telescoping barrels, travels a greater distance along the optical axis direction than the another telescoping barrel. A lens group driving mechanism is provided for moving the plurality of lens groups in the optical axis direction by movement of the at least three telescoping barrels in the optical axis direction.Type: GrantFiled: July 11, 1996Date of Patent: August 19, 1997Assignee: Asahi Kogaku Kogyo Kabushiki KaishaInventors: Hiroshi Nomura, Shinsuke Kohmoto, Takamitsu Sasaki
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Patent number: 5646790Abstract: A zoom lens assembly includes a stationary lens barrel and a rotatable cam ring which is supported on the stationary lens barrel for movement in the direction of the optical axis while being rotated, and which includes at least two cam grooves. The zoom lens include first and third lens groups which are both moveable by one of the two cam grooves in the direction of the optical axis. A second lens group movable, by a second of the two cam grooves in the direction of the optical axis is also provided, as well as a focusing mechanism, for moving the second lens group to a position which is determined by focal length data derived from actual positions of the first, second, and third lens groups and object distance data detected by an object distance measuring device. A method of controlling focusing of the zoom lens includes correcting an amount of deviation from focus caused by a zooming operation, by moving the focusing lens group.Type: GrantFiled: March 13, 1995Date of Patent: July 8, 1997Assignee: Asahi Kogaku Kogyo Kabushiki KaishaInventors: Shinsuke Kohmoto, Tomoaki Kobayashi
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Patent number: 5636063Abstract: A zoom lens assembly includes a stationary lens barrel and a rotatable cam ring which is supported on the stationary lens barrel for movement in the direction of the optical axis while being rotated, and which includes at least two cam grooves. The zoom lens include first and third lens groups which are both moveable by one of the two cam grooves in the direction of the optical axis. A second lens group movable, by a second of the two cam grooves in the direction of the optical axis is also provided, as well as a focusing mechanism, for moving the second lens group to a position which is determined by focal length data derived from actual positions of the first, second, and third lens groups and object distance data detected by an object distance measuring device. A method of controlling focusing of the zoom lens includes correcting an amount of deviation from focus caused by a zooming operation, by moving the focusing lens group.Type: GrantFiled: December 28, 1995Date of Patent: June 3, 1997Assignee: Asahi Kogaku Kogyo Kabushiki KaishaInventors: Shinsuke Kohmoto, Tomoaki Kobayashi
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Patent number: 5598240Abstract: A zoom lens for a camera having a between-the-lens shutter includes a motor for moving the lens along an optical axis in forward and rearward directions. A switch is operable by an operator to control operation of the motor for moving the lens from an initial position on the axis to a final stationary position that establishes the focal length of the lens. Control apparatus is responsive to the setting of the switch for operating the motor such that movement of the lens from its initial position to its final position always ends after the lens travels to its final position in a predetermined direction.Type: GrantFiled: June 7, 1995Date of Patent: January 28, 1997Assignee: Asahi Kogaku Kogyo Kabushiki KaishaInventors: Keisuke Haraguchi, Shinsuke Kohmoto, Takeo Kobayashi, Shigeru Kondoh, Hideki Ohkubo, Norio Numako, Saburo Sugawara
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Patent number: 5583596Abstract: A lens shutter type of camera is disclosed in which a zoom lens is positioned in a lens block (1) which has a sector gear (15) rotatably associated with the lens block and with a rotatable cam ring (14). The cam ring and sector gear are rotatable in a substantially constant axial position. A movable finder optical assembly (8) and a movable strobe assembly (9) are movable in association with movement of the zoom lens. The zoom lens is movable between an extreme telephoto position and an extreme wide angle position, as well a into a fully collapsed lens position beyond the extreme wide angle position and a macro or close-up photographing position beyond the extreme telephoto position. When the camera is in its macro mode, a prism (P1) is inserted into the finder optical assembly to correct for parallax; the strobe assembly is moved to change its illumination angle; and an optical wedge (4e) is pivoted into the path between a light receiver (4) and a light emitter (3e).Type: GrantFiled: June 3, 1995Date of Patent: December 10, 1996Assignee: Asahi Kogaku Kogyo Kabushiki KaishaInventors: Keisuke Haraguchi, Shinsuke Kohmoto, Takeo Kobayashi, Shigeru Kondoh, Hideki Ohkubo, Norio Numako, Saburo Sugawara, Susao Nakamura, Hirofumi Matsuo, Katsuhiko Nomura, Etsuro Nishio, Haruo Ishii
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Patent number: 5537262Abstract: An apparatus for setting the rotational torque of a screw mechanism including a frictional member which is positioned between a lens frame and a lens frame holder. The frictional member can be made of natural fiber, sponge, rubber, or styrene foam.Type: GrantFiled: October 18, 1994Date of Patent: July 16, 1996Assignee: Asahi Kogaku Kogyo Kabushiki KaishaInventors: Nobuaki Aoki, Zenichi Okura, Shinsuke Kohmoto, Hitoshi Tanaka, Kazuyoshi Azegami
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Patent number: 5510936Abstract: An apparatus for adjusting the axial position of a lens includes a lens frame which holds the lens, and a lens frame holder which holds the lens frame to allow movement in the optical axis direction. A plurality of split screw engaging portions are provided between the lens frame and the lens frame holder, so that the lens frame and the lens frame holder are capable of being fitted together without rotating and are screw engagable with the split screw engaging portions.Type: GrantFiled: October 24, 1994Date of Patent: April 23, 1996Assignee: Asahi Kogaku Kogyo Kabushiki KaishaInventors: Nobuaki Aoki, Shinsuke Kohmoto, Zenichi Okura
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Patent number: 5475456Abstract: A zoom lens for a camera having a between-the-lens shutter includes a motor for moving the lens along an optical axis in forward and rearward directions. A switch is operable by an operator to control operation of the motor for moving the lens from an initial position on the axis to a final stationary position that establishes the focal length of the lens. Control apparatus is responsive to the setting of the switch for operating the motor such that movement of the lens from its initial position to its final position always ends after the lens travels to its final position in a predetermined direction.Type: GrantFiled: December 22, 1994Date of Patent: December 12, 1995Assignee: Asahi Kogaku Kogyo Kabushiki KaishaInventors: Keisuke Haraguchi, Shinsuke Kohmoto, Takeo Kobayashi, Shigeru Kondoh, Hideki Oukubo, Norio Numako
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Patent number: 5465131Abstract: A lens shutter type of camera is disclosed in which a zoom lens is positioned in a lens block (1) which has a sector gear (15) rotatably associated with the lens block and with a rotatable cam ring (14). The cam ring and sector gear are rotatable in a substantially constant axial position. A movable finder optical assembly (8) and a movable strobe assembly (9) are movable in association with movement of the zoom lens. The zoom lens is movable between an extreme telephoto position and an extreme wide angle position, as well a into a fully collapsed lens position beyond the extreme wide angle position and a macro or close-up photographing position beyond the extreme telephoto position. When the camera is in its macro mode, a prism (P1) is inserted into the finder optical assembly to correct for parallax; the strobe assembly is moved to change its illumination angle; and an optical wedge (4e) is pivoted into the path between a light receiver (4) and a light emitter (3e).Type: GrantFiled: March 10, 1994Date of Patent: November 7, 1995Assignee: Asahi Kogaku Kogyo Kabushiki KaishaInventors: Keisuke Haraguchi, Shinsuke Kohmoto, Takeo Kobayashi, Shigeru Kondoh, Hideki Ohkubo, Norio Numako, Hirofumi Matsuo
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Patent number: 5461444Abstract: A lens holding structure used in a camera is provided having a rectangular photographing aperture. The lens holding structure includes a lens and a lens holding member for holding a lens. The lens is formed having a pair of flat surfaces, parallel to each other, and parallel to a longitudinal boundary of the photographing aperture. The lens holding member has a lens holding sleeve and a pair of lens engaging arms. When the lens is fitted into the lens holding sleeve, the lens engaging arms contact the pair of flat surfaces of the lens.Type: GrantFiled: April 20, 1994Date of Patent: October 24, 1995Assignee: Asahi Kogaku Kogyo Kabushiki KaishaInventors: Zenichi Okura, Shinsuke Kohmoto
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Patent number: 5450242Abstract: A zoom lens assembly includes a stationary lens barrel and a rotatable cam ring which is supported on the stationary lens barrel for movement in the direction of the optical axis while being rotated, and which includes at least two cam grooves. The zoom lens include first and third lens groups which are both movable by one of the two cam grooves in the direction of the optical axis. A second lens group movable, by a second of the two cam grooves in the direction of the optical axis is also provided, as well as a focusing mechanism, for moving the second lens group to a position which is determined by focal length data derived from actual positions of the first, second, and third lens groups and object distance data detected by an object distance measuring device. A method of controlling focusing of the zoom lens includes correcting an amount of deviation from focus caused by a zooming operation, by moving the focusing lens group.Type: GrantFiled: February 26, 1993Date of Patent: September 12, 1995Assignee: Asahi Kogaku Kogyo Kabushiki KaishaInventors: Shinsuke Kohmoto, Tomoaki Kobayashi
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Patent number: 5434714Abstract: A barrier mechanism for a zoom lens assembly which includes a stationary lens barrel and a rotatable cam ring which is supported on the stationary lens barrel for movement in the direction of the optical axis while being rotated, and which includes at least two cam grooves. The barrier mechanism of the lens barrel includes a pair of barrier plate assemblies which are adapted to open and close an opening of the lens barrel, wherein each of the pair of barrier plate assemblies includes a pair of plate elements which are symmetrically arranged with respect to a center of the opening. In the closed position, the barrier plates are arranged side by side.Type: GrantFiled: August 1, 1994Date of Patent: July 18, 1995Assignee: Asahi Kogaku Kogyo Kabushiki KaishaInventors: Shinsuke Kohmoto, Tomoaki Kobayashi