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公开(公告)号：DE69129783T2
公开(公告)日：1998-11-19
申请号：DE69129783
申请日：1991-10-15
Applicant: SONY CORP
Inventor： KAWAMURA HIROSHI , TSUJINAKA MASATO
Abstract: A mechanism for detecting a rotation amount of a diaphragm (3,3) for use in an optical system, such as a camera, including an actuator (6) mounted on a cover plate (8) secured on a base plate (2) in the optical system, diaphragm blades (3,3) pivotally mounted on the base plate (2), and a rotating ring (5) supported by the diaphragm blades (3,3). When the actuator (6) is energized, the rotating ring (5) is rotated so that the diaphragm blades (3,3) are rotatingly moved to open or close a center opening (2a) of the base plate (2). The mechanism includes a magnet (10) with a magnetic gradient fixed on an outer periphery of the rotating ring (5) and a magnetic leakage flux detecting means (11) secured in the cover plate (8) so as to be disposed opposite the magnet (10) and spaced at a given clearance apart therefrom. When the rotating ring (5) is rotated by the actuator (6), the magnet (10) passes over the magnetic leakage flux detecting means (11). The detecting means (11) detects change in an amount of magnetic leakage flux generated from the magnet (10) so that a rotation amount of the diaphragm blade (3,3) is determined.
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公开(公告)号：DE69129783D1
公开(公告)日：1998-08-20
申请号：DE69129783
申请日：1991-10-15
Applicant: SONY CORP
Inventor： KAWAMURA HIROSHI , TSUJINAKA MASATO
Abstract: A mechanism for detecting a rotation amount of a diaphragm (3,3) for use in an optical system, such as a camera, including an actuator (6) mounted on a cover plate (8) secured on a base plate (2) in the optical system, diaphragm blades (3,3) pivotally mounted on the base plate (2), and a rotating ring (5) supported by the diaphragm blades (3,3). When the actuator (6) is energized, the rotating ring (5) is rotated so that the diaphragm blades (3,3) are rotatingly moved to open or close a center opening (2a) of the base plate (2). The mechanism includes a magnet (10) with a magnetic gradient fixed on an outer periphery of the rotating ring (5) and a magnetic leakage flux detecting means (11) secured in the cover plate (8) so as to be disposed opposite the magnet (10) and spaced at a given clearance apart therefrom. When the rotating ring (5) is rotated by the actuator (6), the magnet (10) passes over the magnetic leakage flux detecting means (11). The detecting means (11) detects change in an amount of magnetic leakage flux generated from the magnet (10) so that a rotation amount of the diaphragm blade (3,3) is determined.
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公开(公告)号：JPS63155417A
公开(公告)日：1988-06-28
申请号：JP30323886
申请日：1986-12-19
Applicant: SONY CORP
Inventor： NAKAMIZO HIROMITSU , TSUJINAKA MASATO , TANINA MASAJI , ITO SEIJI
IPC: G11B5/455
Abstract: PURPOSE:To improve the accuracy and reliability of a measured value by recording plural frame each in a prescribed current, obtaining the maximum output value by regenerating each frame, and also, averaging the maximum output values of each frame, executing this operation, while changing a recording current, and measuring a regenerative characteristic. CONSTITUTION:In a prescribed current value, plural frames each are recorded, the maximum output values (a), (b), (c), (d) and (e) are obtained by regenerating each frame 1, 2, 3, 4 and 5, and also, the maximum values (a)-(e) of each frame 1-5 are averaged. Subsequently, a reproducing characteristic is measured by executing this operation, while changing a recording current. In such a case, by constituting a measuring system by using a computer, a data processing can be executed easily and exactly by the computer, and the regenerative characteristic can be measured quickly.
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公开(公告)号：JPS63155415A
公开(公告)日：1988-06-28
申请号：JP30323686
申请日：1986-12-19
Applicant: SONY CORP
Inventor： ITO SEIJI , TANINA MASAJI , TSUJINAKA MASATO , NAKAMIZO HIROMITSU
IPC: G11B5/455 , G11B15/61 , G11B15/665 , G11B33/00
Abstract: PURPOSE:To obtain an attachable and detachable evaluating device having the generality for various head drums, by providing a circular groove which is sealed by two pieces of seal rings, and sucking a suction hold formed on a head holding base through said groove. CONSTITUTION:The titled device is constituted of a base for mounting a head drum is divided into two in the axial direction, and also, a circular groove 69 formed on a base 68 side, a seal ring 71 placed in a shape of a concentric circle on both its sides, the groove 69 allowed to communicate with a suction means, and a head drum 30 placed on a head holding base 67 brought to a vacuum suction through air passages 73, 74 of the head holding base 67 of the upper side of the groove 69 and the base 68. In such a way, the head drum can be fixed by a vacuum suction, the head drum can be easily attached and detached in order to evaluate the mounting.
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5.发明专利Optical pickup, and recording and reproducing apparatus of optical recording medium 审中-公开光学记录和光记录介质的记录和再现装置
公开(公告)号：JP2005267795A
公开(公告)日：2005-09-29
申请号：JP2004081029
申请日：2004-03-19
Inventor： ABE TSUGUHIRO , TSUJINAKA MASATO , MATSUO NORIMASA
Abstract: PROBLEM TO BE SOLVED: To provide an optical pickup and an optical recording medium recording and reproducing apparatus in which compatibility of shortening optical path length and reducing return light noise caused by an interference of return light can be performed and miniaturizing, thinning, and weight-lightening can be realized. SOLUTION: Laser noise (return light noise) caused by that an outgoing laser beam is subjected to the interference by return light in which one part of light focused on a recording plane of a disk is moved backward in an outward path optical system and returned to a semiconductor laser is reduced by deciding a range of air conversion optical path length L of an optical system outward path whole system from a laser light emitting point to a disk type recording medium surface by i(n 0 ×d)+ΔL/2 0 ×d)-ΔL/2 (then, i: arbitrary integer) where, resonator length of semiconductor laser: d, active layer refractive index of semiconductor laser: n 0 , allowable plane deviation quantity in disk type recording medium standard:ΔL. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract translation: 解决的问题：提供一种光拾取器和光记录介质记录和再现装置，其中可以执行缩短光路长度和由返回光的干涉引起的减少返回光噪声的兼容性并且小型化，变薄化， 并且可以实现减重。 解决方案：由输出激光束引起的激光噪声（返回光噪声）受到其中聚焦在盘的记录平面上的一部分光在向外路径光学系统中向后移动的返回光的干扰 通过将激光发光点到光盘型记录介质表面的光学系统向外路径整体的空气转换光路长度L的范围决定为i（n
0 < SB>×d）+ΔL/ 2 0 ×d）-ΔL/ 2（然后，i：任意整数）其中，半导体激光器的谐振器长度： d，半导体激光器的有源层折射率：n 0 ，盘式记录介质的容许平面偏差量标准：ΔL。 版权所有（C）2005，JPO＆NCIPI -
Patent Agency Ranking
公开(公告)号：JPH06105196A
公开(公告)日：1994-04-15
申请号：JP27552792
申请日：1992-09-18
Applicant: SONY CORP
Inventor： TSUJINAKA MASATO
Abstract: PURPOSE:To easily detach an iris without the decomposition of a lens barrel while warranting assembly accuracy of an iris. CONSTITUTION:The lens barrel is made up of a lens group comprising stationary lens groups 1,3 and/or moving lens groups 2,4 and an iris 9 arranged in lens barrels 5,8 along an optical axis I-I', slide guides 19,19 are formed to a 3rd group lens 3 adjacent to the iris 9 to be guides when the iris is inserted in a direction of nearly a right angle with respect to the optical axis. An engagement section 20 formed to the iris is fitted to a tip of a guide shaft 12 supporting a 4th group lens 4 to make tentative positioning. The iris is fixed finally by a bracket 23 of a stepping motor 11.
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公开(公告)号：JP2009252257A
公开(公告)日：2009-10-29
申请号：JP2008095338
申请日：2008-04-01
Inventor： TSUJINAKA MASATO
Abstract: PROBLEM TO BE SOLVED: To simplify the correction work of a monitor signal. SOLUTION: The optical pickup 1 includes: two or more laser units for emitting laser beams different in wavelength; an objective lens 18; a dichroic beam splitter 3 disposed in the middle of its optical path to split a part of the laser beam for monitoring emission power; and a light receiving element 4 for receiving a laser split beam to generate a photoelectric signal. Even when the light receiving element 4 photoelectrically converts any of laser split beams, the dichroic beam splitter 3 splits it to a laser split beam of intensity to generate a photoelectrical signal of the same value. Thus, monitor signals of equal signal levels are generated for monitoring emission power. Only by correcting the signal level of any one of the monitor signals, the correction is reflected on the other monitor signals. Thus, the correction work of the monitor signals is simplified. COPYRIGHT: (C)2010,JPO&INPIT
Abstract translation: 要解决的问题：简化监视信号的校正工作。 光拾取器1包括：用于发射波长不同的激光束的两个或更多个激光单元; 物镜18; 设置在其光路中间的分色光束分离器3，以分裂激光束的一部分，用于监测发射功率; 以及用于接收激光分束以产生光电信号的光接收元件4。 即使当光接收元件4对任何一个激光束分光束进行光电转换时，二向色分束器3将其分裂成强度的激光分割光束，以产生相同值的光电信号。 因此，产生监测发射功率的等信号电平的监视信号。 只有通过校正任一监视信号的信号电平，校正就反映在其他监视信号上。 因此，简化了监视信号的校正工作。 版权所有（C）2010，JPO＆INPIT
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公开(公告)号：JPH04152211A
公开(公告)日：1992-05-26
申请号：JP27684990
申请日：1990-10-16
Applicant: SONY CORP
Inventor： KAWAMURA HIROSHI , TSUJINAKA MASATO
Abstract: PURPOSE:To detect the turning quantity of a member accurately in wide range by disposing a magnet, provided with a magnetic grade, on the outer peripheral side of a rotor for turning the member, and fixing a flux detecting means into a position opposed to the magnet with the specified clearance in between. CONSTITUTION:When a rotary ring 5 is rotated at the time of a member 3 being opened/closed, the flux of a magnet 10 in the position of a Hall element 11 is changed. This change is detected by the element 11 so as to detect the diaphragm quantity generated by the member 3. Since the magnet 10 is disposed close to the outermost periphery of a protruding part 5d protruding from the outer peripheral surface 5c of the ring 5 in this diaphragm quantity detecting device 1 for a camera, the moving quantity of th magnet 10 in the rotating direction on the face opposed to the element 1 can be made large, and therefore the contraction quantity of the member 3 can be detected accurately in a wide range. The diaphragm quantity in the case of the diaphragm diameter of the member 3 being minute can be also detected positively.
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公开(公告)号：JPH0446767A
公开(公告)日：1992-02-17
申请号：JP15286790
申请日：1990-06-13
Applicant: SONY CORP
Inventor： KURODA MASAYUKI , TANINA MASAJI , TSUJINAKA MASATO
IPC: B24C7/00
Abstract: PURPOSE:To agitate and mix powder, even if it has an especially large adsorptivity among powders, and distribute the powder in the gas evenly by agitating the fine powder from both vertical and horizontal directions with a rotary vane rotating in both the normal and reverse directions and the gas passed through a filter to mix with the high pressure gas. CONSTITUTION:A rotary vane 12 to be driven by an ultrasonic motor 11 which can rotated in both the normal and reverse directions and a filter 68 for filtering and passing the gas are provided in a mixing chamber 90. The powder 1 and the gas are agitated for mixture by the rotary vane 12 rotating in both the normal and reverse directions and the gas passed through a filter 68. The powder 1 can be thereby distributed evenly in the gas.
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公开(公告)号：JPH1153745A
公开(公告)日：1999-02-26
申请号：JP20753697
申请日：1997-08-01
Applicant: SONY CORP
Inventor： NONAKA CHIAKI , HATTORI MASATO , ISHII TAMOTSU , TSUJINAKA MASATO
Abstract: PROBLEM TO BE SOLVED: To stably access even an optical disk whose guide groove is not optimum in depth by switching a control target of focus control with a guide groove depth. SOLUTION: When the optical disk 11 is for a laser wavelength 780 nm, since it becomes deep groove equivalent for an optical disk device 10, the optimum focus control setting a just focal position in the control target is performed at a block error rate, and the optimum focus control setting the position offset to the optical disk 11 side by the deep groove equivalent much is performed at an address error rate. Further, though a signal ADIP of a fixed envelop is obtained in this offset position, the signal ADIP that the envelop is wobbled is detected in the just focus position. Thus, in this optical disk 11, a servo circuit 20 selects the reference voltage making this offset optimum position the control target in addition to recording data reproduction, and focus controls to the offset control target.
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