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    Pseudo format camera system
    1.
    发明授权
    Pseudo format camera system 失效
    伪格式相机系统

    公开(公告)号：US5142310A

    公开(公告)日：1992-08-25

    申请号：US560220

    申请日：1990-07-25

    申请人： Nobuyuki Taniguchi ,  Manabu Inoue ,  Toshihiko Ishimura ,  Toshio Yamaki ,  Reiji Seki ,  Atsushi Sumitani

    发明人： Nobuyuki Taniguchi ,  Manabu Inoue ,  Toshihiko Ishimura ,  Toshio Yamaki ,  Reiji Seki ,  Atsushi Sumitani

    IPC分类号： G03C3/00 ,  G03B7/091 ,  G03B7/24

    CPC分类号： G03B7/24 ,  G03B7/0807 ,  G03B7/097

    摘要： A pseudo format camera system comprises a film cartridge including a memory which stores film speed data and limitation data, and a camera including a means for setting pseudo focal length, a means for inputting the film speed data and the limitation data from the memory, a means for controlling exposure based on the film speed data, and a means for limiting the pseudo focal length depending on the limitation data. In this camera system, the pseudo focal length can be limited based on the limitation data stored in the memory in the film cartridge, and therefore it is surely prevented that a picture becomes rough because of a bad grainness of a film.

    摘要翻译： 伪格式相机系统包括：胶片暗盒，其包括存储胶片速度数据和限制数据的存储器;以及相机，包括用于设置伪焦距的装置，用于从存储器输入胶片速度数据和限制数据的装置， 用于基于胶片速度数据控制曝光的装置，以及根据限制数据限制伪焦距的装置。 在该相机系统中，可以基于存储在暗盒中的存储器中的限制数据来限制伪焦距，因此可以确保由于胶片的不良纹理而使图像变得粗糙。

    Zooming apparatus for a viewfinder optical system
    2.
    发明授权
    Zooming apparatus for a viewfinder optical system 失效
    取景器光学系统的变焦装置

    公开(公告)号：US5036346A

    公开(公告)日：1991-07-30

    申请号：US465966

    申请日：1990-01-16

    申请人： Osamu Hatamori ,  Yoshiaki Hata ,  Atsushi Sumitani ,  Haruo Kobayashi ,  Kinya Kato

    发明人： Osamu Hatamori ,  Yoshiaki Hata ,  Atsushi Sumitani ,  Haruo Kobayashi ,  Kinya Kato

    IPC分类号： G03B13/12

    CPC分类号： G03B13/12

    摘要： A camera having zoom lenses of a photographing optical system, zoom lenses of a viewfinder optical system, and a driving motor for driving both zoom lenses. A transmitting mechanism for transmitting the force of the driving motor to the zoom lenses of the viewfinder optical system having a gear train connected to the driving motor and a rotation cam which is provided coaxially with the last gear of the gear train to drive the zoom lenses of the viewfinder lens. A key projects from the end of the periphery of a rotation shaft included in the cam. The last gear is mounted around an end of the rotation shaft of the cam and has a key groove engaging the key. A play is provided between the key groove and the key. In carrying out a back focal distance compensation by reversing the driving motor a slight amount when a zooming operation is completed by moving the zoom lenses of the photographing optical system in a predetermined direction, a slight amount of the reverse rotation of the least gear of the gear train is absorbed by the play provided in the transmitting mechanism of the viewfinder optical system. Thus, the rotation cam is not rotated, i.e., the zoom lenses of the viewfinder optical system is not moved.

    摘要翻译： 具有拍摄光学系统的变焦镜头，取景器光学系统的变焦镜头和用于驱动两个变焦镜头的驱动电机的相机。 用于将驱动电动机的力传递到具有连接到驱动电动机的齿轮系的取景器光学系统的变焦透镜的发送机构和与齿轮系的最后一个齿轮同轴设置的旋转凸轮以驱动变焦透镜 的取景器镜头。 钥匙从包括在凸轮中的旋转轴的周边的端部突出。 最后的齿轮安装在凸轮的旋转轴的端部周围，并且具有与键接合的键槽。 钥匙槽和钥匙之间设有一个游戏。 在通过使拍摄光学系统的变焦镜头沿预定方向移动来完成变焦操作时，通过使驱动电机反转轻微的量来进行后焦距补偿，因此，在最小档位 齿轮系被提供在取景器光学系统的传送机构中的游戏所吸收。 因此，旋转凸轮不旋转，即，取景器光学系统的变焦透镜不被移动。