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    11.
    发明专利
    未知

    公开(公告)号：DE69034036T2

    公开(公告)日：2003-08-14

    申请号：DE69034036

    申请日：1990-02-08

    Applicant: CANON KK

    Inventor： HIRASAWA MASAHIDE ,  TOYAMA MASAMICHI ,  IIJIMA RYUNOSUKE

    IPC: G02B7/10 ,  H04N5/232 ,  G02B7/28

    Abstract: A camera system having a lens unit (100A) provided with an actuator (107,108,109) for changing the state of an optical system by driving a driving part and a driving circuit (110,111,112) which drives the actuator (107,108,109) on the basis of a driving control instruction signal supplied in a given periodicity from a control circuit disposed on the side of a camera body (100B). The lens unit (100A) is characterized in that the actuator driving timing of the driving circuit is arranged to differ from the timing at which the driving control instruction signal is supplied from the control circuit to the driving circuit.

    12.
    发明专利
    未知

    公开(公告)号：DE69034036D1

    公开(公告)日：2003-02-20

    申请号：DE69034036

    申请日：1990-02-08

    Applicant: CANON KK

    Inventor： HIRASAWA MASAHIDE ,  TOYAMA MASAMICHI ,  IIJIMA RYUNOSUKE

    IPC: G02B7/10 ,  H04N5/232 ,  G02B7/28

    Abstract: A camera system having a lens unit (100A) provided with an actuator (107,108,109) for changing the state of an optical system by driving a driving part and a driving circuit (110,111,112) which drives the actuator (107,108,109) on the basis of a driving control instruction signal supplied in a given periodicity from a control circuit disposed on the side of a camera body (100B). The lens unit (100A) is characterized in that the actuator driving timing of the driving circuit is arranged to differ from the timing at which the driving control instruction signal is supplied from the control circuit to the driving circuit.

    13.
    发明专利
    未知

    公开(公告)号：DE69128437T2

    公开(公告)日：1998-06-04

    申请号：DE69128437

    申请日：1991-05-27

    Applicant: CANON KK

    Inventor： HIRASAWA MASAHIDE

    IPC: G02B7/08 ,  G02B7/10 ,  G03B5/00 ,  H04N5/232

    Abstract: An optical system controlling apparatus includes a plurality of lenses for varying an optical characteristic, a plurality of driving parts for driving the plurality of lenses, respectively, a plurality of sensors for detecting the respective states of drive of the plurality of lenses, and a controlling circuit for driving each of the driving parts on the basis of detection information provided by the sensor and controlling each of the lenses during a steady state, the controlling circuit being capable of performing initialization for the respective lenses by parallel processing during an initial state before the steady state is established.

    14.
    发明专利
    未知

    公开(公告)号：DE69128437D1

    公开(公告)日：1998-01-29

    申请号：DE69128437

    申请日：1991-05-27

    Applicant: CANON KK

    Inventor： HIRASAWA MASAHIDE

    IPC: G02B7/08 ,  G02B7/10 ,  G03B5/00 ,  H04N5/232

    Abstract: An optical system controlling apparatus includes a plurality of lenses for varying an optical characteristic, a plurality of driving parts for driving the plurality of lenses, respectively, a plurality of sensors for detecting the respective states of drive of the plurality of lenses, and a controlling circuit for driving each of the driving parts on the basis of detection information provided by the sensor and controlling each of the lenses during a steady state, the controlling circuit being capable of performing initialization for the respective lenses by parallel processing during an initial state before the steady state is established.

    15.
    发明专利
    未知

    公开(公告)号：DE69028741D1

    公开(公告)日：1996-11-07

    申请号：DE69028741

    申请日：1990-07-06

    Applicant: CANON KK

    Inventor： HIRASAWA MASAHIDE

    IPC: G03B13/36 ,  G02B7/08 ,  G02B7/10 ,  G02B7/28 ,  G03B13/30 ,  H04N5/232

    Abstract: A camera comprises a first lens group which is arranged to perform a power varying action, a second lens group arranged to adjust focus and to correct a change occurring in an image forming position according to the movement of the first lens group, a focus detection circuit arranged to detect the degree of focus, a memory arranged to store at least a standard speed at which the second lens group is moved to follow the movement of the first lens group without losing an in-focus state, a speed which is set to shift the image forming position forward relative to the standard speed and a speed which is set to shift the image forming position rearward relative to the standard speed; and a control circuit arranged to select from the memory the second lens group driving speed and to determine the driving direction according to the output of the focus detecting means and the moving direction of the first lens group.

    19.
    发明专利
    未知

    公开(公告)号：DE69031407T2

    公开(公告)日：1998-02-12

    申请号：DE69031407

    申请日：1990-06-08

    Applicant: CANON KK

    Inventor： TOYAMA MASAMICHI ,  FUJIWARA AKIHIRO ,  SUDA HIROFUMI ,  YAMADA KUNIHIKO ,  HIRASAWA MASAHIDE ,  KANEDA KITAHIRO

    IPC: G02B7/28 ,  H04N5/232

    Abstract: An automatic focus adjustment system comprises a focusing device which varies an image forming position; and a control circuit which is capable of setting first and second focusing modes. In the first focusing mode, the control circuit causes the focusing device to move to an in-focus point within its morning area. In the second focusing mode, the control circuit causes the focusing device to move to an in-focus point on the nearest focusing distance side. The control circuit is arranged to divide a moving range of the focusing device into a first area and a second area which is set on the nearest focusing distance side of the first area to make the focusing device movable within the first area in the first focusing mode, and to make it movable within both the first and second areas in the second focusing mode.

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