Patents by Inventor Makoto Kamiya
Makoto Kamiya 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: 5313247Abstract: A flash device comprising a power source; a main capacitor adapted to be charged by the power source; a flash firing unit operable to consume charge stored in the main capacitor to emit a flash light; a switching unit disposed in a discharge loop for the main capacitor through the flash firing unit; a trigger circuit for exciting the flash firing unit in response to a flash firing command; a pulse output unit, which is operable to output some kinds of pulses, the duty factors of the pulses being different from each other, for inputting a selecting command and for outputting one of the pulses in accordance with the selecting command; and a control unit for causing the switching unit to be switched on and off repeatedly in response to the pulse outputted from the pulse output unit.Type: GrantFiled: September 10, 1992Date of Patent: May 17, 1994Assignee: Minolta Camera Kabushiki KaishaInventors: Hiroshi Hosomizu, Tsutomu Ichikawa, Makoto Kamiya, Masatoshi Yoneyama, Kenzi Tuzi
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Patent number: 5311354Abstract: In a telescope according to the present invention, defocus amount of an optical system constituting the telescope is calculated; whether or not the defocus amount is within a predetermined in-focus range obtained from a focal point adjusting ability of human eye is discriminated; and when the defocus amount exceeds the in-focus range as a result of the above discrimination, the optical system is driven. The optical system is driven in a shorter time than a time required for removing a defocus by human eye.Type: GrantFiled: July 29, 1991Date of Patent: May 10, 1994Assignee: Minolta Camera Kabushiki KaishaInventors: Makoto Kamiya, Haruyuki Nagano, Katsuhito Akagi, Masatoshi Yoneyama, Yoshiharu Ohta
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Patent number: 5235458Abstract: A binocular comprising a housing and a pair of first and second optical systems positioned on each side of a central line. Each optical system includes an object lens and ocular lens arranged at a front part and at a rear part of the housing respectively. Further, a light admitting window is placed on the central line between the first and second optical systems for admitting light from an object. A detection module, provided independently of the first and second optical systems is used to output electrical signals which represent the distance to the object. The detection module may include an optical path deflecting means for z-shapely deflecting the light from the light admitting window and for directing the light to a sensor. The binocular is compact and has a hand grip that is designed in order to be holdable and focusable by the use of a single hand.Type: GrantFiled: February 19, 1991Date of Patent: August 10, 1993Assignee: Minolta Camera Kabushiki KaishaInventors: Katsuhito Akagi, Kazuo Kimura, Haruyuki Nagano, Makoto Kamiya, Masatoshi Yoneyama, Iwao Ishida, Koichi Okumura
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Patent number: 4951081Abstract: A flash device comprising a power source; a main capacitor adapted to be charged by the power source; a flash firing unit operable to consume charge stored in the main capacitor to emit a flash light; a switching unit disposed in a discharge loop for the main capacitor through the flash firing unit; a trigger circuit for exciting the flash firing unit in response to a flash firing command; a pulse output unit, which is operable to output some kinds of pulses, the duty factors of the pulses being different from each other, for inputting a selecting command and for outputting one of the pulses in accordance with the selecting command; and a control unit for causing the switching unit to be switched on and off repeatedly in response to the pulse outputted from the pulse output unit.Type: GrantFiled: July 8, 1988Date of Patent: August 21, 1990Assignee: Minolta Camera Kabushiki KaishaInventors: Hiroshi Hosomizu, Tsutomu Ichikawa, Makoto Kamiya, Masatoshi Yoneyama, Kenzi Tuzi
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Patent number: 4935759Abstract: A system for controlling an illuminating angle of a flashlight includes a stepping motor by which a relative position between a panel and a reflector is controlled to change the illuminating angle. Further, in setting the illuminating angle, the widest angle is set as the starting point, and whereby an unevenness of exposure is not caused though a sudden photography operation is performed.Type: GrantFiled: May 11, 1989Date of Patent: June 19, 1990Assignee: Minolta Camera Kabushiki KaishaInventors: Kenji Tsuji, Makoto Kamiya
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Patent number: 4851868Abstract: A flash device for use in association with a camera is disclosed. The camera provides focal length data representing a focal length of a lens mounted on the camera to the flash device. The flash device comprises a body portion, a flash head pivotally mounted on the body portion, a xenon tube provided in the flash head for emitting a flash light, and a lens is provided in front of the light emitting means movably to change the angle of the cone of the flash light. A driving circuit, controlled by a microcomputer, is provided for driving the lens in response to the focal length data to set the angle of the cone of the flash light correspondingly to the focal length. A pivot detector is provided for detecting the pivotal movement of the flash head. When the pivotal movement is detected, the microcomputer controls the driving circuit so as not to drive the lens but to maintain the lens, during and after the pivotal movement, in the same position as it was before the pivotal movement.Type: GrantFiled: March 18, 1988Date of Patent: July 25, 1989Assignee: Minolta Camera Kabushiki KaishaInventors: Nobuyuki Taniguchi, Keiji Yamazaki, Hiroshi Hosomizu, Makoto Kamiya, Kenji Tsuji
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Patent number: 4839686Abstract: An improved flash device which is characterized in the provision of a power source, a main capacitor adapted to be charged by the power source, a flash firing unit operable to consume charge stored in the main capacitor to emit a flash light, a trigger circuit for exciting the flash firing unit in response to a flash firing command, an insulated gate bipolar transistor disposed in a discharge loop for the main capacitor through the flash firing unit, and a control circuit for applying a voltage to a gate of the insulated gate bipolar transistor in response to the flash firing command and for interrupting the application of the voltage to the insulated gate bipolar transistor in response to a flash terminating command.Type: GrantFiled: July 8, 1988Date of Patent: June 13, 1989Assignee: Minolta Camera Kabushiki KaishaInventors: Hiroshi Hosomizu, Tsutomu Ichikawa, Makoto Kamiya, Masatoshi Yoneyama, Kenzi Tuzi
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Patent number: 4743929Abstract: A flash device for use in association with a camera is disclosed. The camera provides focal length data representing a focal length of a lens mounted on the camera to the flash device. The flash device comprises a body portion, a flash head pivotally mounted on the body portion, a xenon tube provided in the flash head for emitting a flash light, and a lens is provided in front of the light emitting means movably to change the angle of the cone of the flash light. A driving circuit, controlled by a microcomputer, is provided for driving the lens in response to the focal length data to set the angle of the cone of the flash light correspondingly to the focal length. A pivot detector is provided for detecting the pivotal movement of the flash head. When the pivotal movement is detected, the microcomputer controls the driving circuit so as not to drive the lens but to maintain the lens, during and after the pivotal movement, in the same position as it was before the pivotal movement.Type: GrantFiled: December 20, 1985Date of Patent: May 10, 1988Assignee: Minolta Camera Kabushiki KaishaInventors: Nobuyuki Taniguchi, Keiji Yamazaki, Hiroshi Hosomizu, Makoto Kamiya, Kenji Tsuji
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Patent number: 4712902Abstract: In a device for indicating a camera-to-object distance for flash photography, an electronic flash device receives data from a camera, the data being indicative of a set value of film speed, a set value of exposure to be compensated from a proper exposure and a value of diaphragm aperture to be controlled. The flash device calculates a camera-to-object distance in accordance with the above three data and the limit value of the flash light to be emitted from a light emitter, the camera-to-object distance indicating such an effective object distance that an object at the distance is illuminated with sufficient amount of flash light to effect a desired film exposure corresponding to the exposure compensation value, or an automatic flash available range of the object distance that an object within the range is illuminated by automatically controlled flash light to effect the desired film exposure corresponding to the exposure compensation value.Type: GrantFiled: January 17, 1986Date of Patent: December 15, 1987Assignee: Minolta Camera Kabushiki KaishaInventors: Hiroshi Hosomizu, Kenji Tsuji, Makoto Kamiya
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Patent number: RE34558Abstract: A flash device for use in association with a camera is disclosed. The camera provides focal length data representing a focal length of a lens mounted on the camera to the flash device. The flash device comprises a body portion, a flash head pivotally mounted on the body portion, a xenon tube provided in the flash head for emitting a flash light, and a lens is provided in front of the light emitting means movably to change the angle of the cone of the flash light. A driving circuit, controlled by a microcomputer, is provided for driving the lens in response to the focal length data to set the angle of the cone of the flash light correspondingly to the focal length. A pivot detector is provided for detecting the pivotal movement of the flash head. When the pivotal movement is detected, the microcomputer controls the driving circuit so as not to drive the lens but to maintain the lens, during and after the pivotal movement, in the same position as it was before the pivotal movement.Type: GrantFiled: July 25, 1991Date of Patent: March 8, 1994Assignee: Minolta Camera Kabushiki KaishaInventors: Nobuyuki Taniguchi, Keiji Yamazaki, Hiroshi Hosomizu, Makoto Kamiya, Kenji Tsuji