Patents by Inventor Tadao Isono
Tadao Isono 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: 4972574Abstract: Disclosed is a table driving apparatus adapted for use with an automatic mounting apparatus or assembling robot comprising a working table movable in at least one direction, and a direct-drive motor having a rotary arm. A mechanism is provided for mechanically coupling the working table and the rotary arm in such a manner that turning movement of the arm can be converted into linearly sliding movement of the working table along the one direction. The direct-drive motor is coupled with the working table with such a small compliance that the resonance frequency of a statem including the direct-drive motor and a load coupled therewith lies out of a frequency range within which the direct-drive motor is operable. This arrangement assures a rigid coupling between the firect-drive motor and the working table with a small compliance, so that the resonance frequency becomes muxh higher than otherwise coupled, thus enabling a stable and precise driving of the working table.Type: GrantFiled: May 23, 1989Date of Patent: November 27, 1990Assignee: Mamiya Denshi Co., Ltd.Inventors: Tadao Isono, Yasuaki Sekiguchi
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Patent number: 4346975Abstract: An automatic adjustment system for a camera which time division multiplexes inputs from a scanning system, and an automatic exposure control or a film feeding motor speed control into an evaluation circuit. The same electronic circuitry is thereby used for evaluating the input from any of the mentioned adjusting systems to minimize the complexity and bulk of the camera circuitry necessary for processing. Each aforementioned automatic feature compares a respective pair of signals to determine the respective adjustment. A pair of signals is brought to a common condition indicative of proper adjustment by use of feedback from the actual state of the automatic system for the particular feature.Type: GrantFiled: August 2, 1979Date of Patent: August 31, 1982Assignee: Osawa Precision Industries, Ltd.Inventor: Tadao Isono
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Patent number: 4303320Abstract: An improved automatic focusing system for an optical instrument includes a scanner driven oscillatably across an angle to detect a subject positioned between infinity and the minimum focus condition of the objective lens of the optical instrument. The scanner is adjusted in response to the focus condition of the lens to align the bisector of the angle scanned with the subject when the lens is in perfect focus by electronic and mechanical interconnecting feedback means between the objective lens focusing ring and the scanning system.Type: GrantFiled: July 12, 1979Date of Patent: December 1, 1981Assignee: Osawa Precision Industries, Ltd.Inventor: Tadao Isono
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Patent number: 4162123Abstract: A technique is shown for automatically adjusting the sensitivity of an auto focus device in accordance with the level of light intensity of the subject. Sensitivity correction is required because the timing of the automatic focus signal is directly related to the intensity of the light from the subject. In systems where the timing of the automatic focus signal is used to determine the distance of the subject from the camera signal, correction is absolutely essential. A supplementary photo cell is used to measure the light coming from the subject and set the sensitivity of the automatic focus system.Type: GrantFiled: November 29, 1977Date of Patent: July 24, 1979Assignee: Nihon Beru-Haueru Kabushiki KaishaInventor: Tadao Isono
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Patent number: 4157217Abstract: Disclosed is an improvement in an automatic focusing system for use with an optical instrument having a focusable objective which is adjustable in response to optical and electronic components of the system for determining object distance of a remote subject by comparing images of scanning and reference optical systems. The scanner of the optical system is driven oscillatably across an angle to detect a subject between infinity and the minimum focus condition of the objective lens. The scanner is adjustable in response to the focus condition of the lens for alignment of the angle scanned with the subject when the lens is in perfect focus by means of an electronic and mechanical interconnecting feedback between the lens focusing ring and the aiming device for the scanning system.The present invention relates to improvements in an automatic focusing system's for use with an optical instrument having a focusable objective.Type: GrantFiled: January 23, 1978Date of Patent: June 5, 1979Assignee: Nihon Beru-Haueru Kabushiki KaishaInventor: Tadao Isono
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Patent number: 4123765Abstract: Disclosed is an improvement in an automatic focusing system for use with an optical instrument having a focusable objective which is adjustable in response to optical and electrical components of the system determining object distance of a remote subject by comparing images of scanning and reference optical systems. The scanner of the optical system is driven oscillatably across an angle to detect a subject between infinity and the minimum focus condition of the objective lens. The scanner is adjustable in response to the focus condition of the lens whereby the bisector of the angle is aligned with the subject.Type: GrantFiled: April 21, 1977Date of Patent: October 31, 1978Assignee: Nihon Beru-Haueru Kabushiki KaishaInventor: Tadao Isono
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Patent number: 4093365Abstract: For use in a sound motion picture camera adapted to handle both sound and lent film and having a driven capstan at the sound station thereof, the capstan drive motor is used to power a driven component of an automatic focusing system by which a focusable objective lens can be focused automatically on a remote subject. By a control switch, associated with the camera operation control member, either manual or automatic focusing modes can be selected, the automatic mode being further selectable as being continuous during film transport operation or limited to a period before film transport operation begins.Type: GrantFiled: March 28, 1977Date of Patent: June 6, 1978Assignee: Nihon Beru-Haueru Kabushiki Kaisha (Bell & Howell Japan, Ltd.)Inventor: Tadao Isono