Electronic flash apparatus for cameras
    1.
    发明授权
    Electronic flash apparatus for cameras 失效
    电子闪光灯相机

    公开(公告)号:US4969007A

    公开(公告)日:1990-11-06

    申请号:US312333

    申请日:1989-02-16

    IPC分类号: G03B15/05

    CPC分类号: G03B15/05 G03B2215/05

    摘要: In a camera system including an electronic flash apparatus, a main capacitor of the flash apparatus is charged for a predetermined time interval, in response to a preparatory operation such as a first stroke of a release button. During this time interval, operation of an automatic distance measuring device, an automatic exposure controlling device and an object luminance discriminating circuit is prevented. A warning device warns a photographer that the main capacitor is insufficiently charged. Several voltage detectors detect different voltage levels of the main capacitor and produce detection signals for inhibiting the operation of the warning device and/or preventing further charging of the main capacitor.

    摘要翻译: 在包括电子闪光装置的照相机系统中,响应于诸如释放按钮的第一笔划的预备操作,闪光装置的主电容器以预定的时间间隔被充电。 在该时间间隔期间,防止自动距离测量装置,自动曝光控制装置和物体亮度鉴别电路的操作。 警告装置警告摄影师主电容器充电不足。 几个电压检测器检测主电容器的不同电压电平,并产生用于抑制警告装置的操作和/或防止主电容器进一步充电的检测信号。

    Electronic flash apparatus for cameras
    2.
    发明授权
    Electronic flash apparatus for cameras 失效
    电子闪光灯相机

    公开(公告)号:US5109244A

    公开(公告)日:1992-04-28

    申请号:US618537

    申请日:1990-11-27

    IPC分类号: G03B15/05

    CPC分类号: G03B15/05 G03B2215/05

    摘要: In a camera system including an electronic flash apparatus, a main capacitor of the flash apparatus is charged for a predetermined time interval, in response to a preparatory operation such as a first stroke of a release button. During this time interval, operation of an automatic distance measuring device, an automatic exposure controlling device and an object luminance discriminating circuit is prevented. A warning device warns a photographer that the main capacitor is insufficiently charged. Several voltage detectors detect different voltage levels of the main capacitor and produce detection signals for inhibiting the operation of the warning device and/or preventing further charging of the main capacitor.

    Zooming control device for camera
    3.
    发明授权
    Zooming control device for camera 失效
    照相机变焦控制装置

    公开(公告)号:US4962400A

    公开(公告)日:1990-10-09

    申请号:US326684

    申请日:1989-03-21

    CPC分类号: G02B7/102 G03B3/10

    摘要: There is disclosed a zooming control device for a camera, enabling photographing with a constant magnification of an object, and still avoiding overflowing of an object from the photographed frame in zooming of the lens. The frame is divided into plural areas, and there is discriminated whether an object is present only in the central area, or also in the peripheral area or areas. In the former case the lens is zoomed to achieve a preset image magnification, but, in the latter case, the zooming is limited in order to avoid overflowing of an object from the frame.

    摘要翻译: 公开了一种用于照相机的变焦控制装置,能够以物体的恒定倍率进行拍摄,并且仍然避免在镜头变焦时物体从被拍摄的帧中溢出。 该帧被分成多个区域,并且区分对象是仅存在于中央区域中,还是在周边区域或区域中。 在前一种情况下,镜头被放大以实现预设的图像放大倍率,但是在后一种情况下,缩放被限制以避免物体从框架溢出。

    Active distance measuring apparatus
    4.
    发明授权
    Active distance measuring apparatus 失效
    主动测距仪

    公开(公告)号:US4909624A

    公开(公告)日:1990-03-20

    申请号:US305437

    申请日:1989-02-02

    CPC分类号: G02B7/32

    摘要: An active distance measuring apparatus is equipped with a light projector for projecting modulated light to an object, a photoreceptor for receiving the modulated light reflected from the object and generating an alternating signal corresponding to the distance to the object, and a signal processing circuit for generating distance data from the alternating signal. The signal processing circuit is constituted by high level detecting means for detecting the high level value of the alternating signal, low level detecting means for detecting the low level value of the alternating signal, and an operation means for calculating distance data from the difference of both level values.

    摘要翻译: 主动距离测量装置配备有用于将调制光投射到物体的光投影仪,用于接收从物体反射的调制光的感光体,并产生与物体的距离相对应的交变信号;以及信号处理电路,用于产生 来自交替信号的距离数据。 信号处理电路由用于检测交流信号的高电平值的高电平检测装置,用于检测交流信号的低电平值的低电平检测装置和用于从两者的差值计算距离数据的操作装置 水平值。

    Flashlight photography preparing device of a camera
    6.
    发明授权
    Flashlight photography preparing device of a camera 失效
    相机的手电筒摄影准备装置

    公开(公告)号:US4475801A

    公开(公告)日:1984-10-09

    申请号:US516727

    申请日:1983-07-25

    摘要: In a camera provided with a flash unit, a device for limiting the preparatory operation for flashlight emission of said flash unit comprises metering means for detecting that the brightness of an object to be photographed is lower than predetermined brightness and producing a detection signal, means operable to start photographing, the operable means having a first operation stage for producing a first signal and a second operation stage for producing a second signal subsequently to the first operation stage, the photographing being started in response to the second signal, and means including timer means responsive to the first signal to count a predetermined time set shorter than the time required from after the first signal is produced until photographing is started in response to the second signal, said means causing the flash unit to effect the preparatory operation for flashlight emission in response to the detection signal of the metering means produced while the timer means is effecting the time count.

    摘要翻译: 在设置有闪光灯组件的照相机中,用于限制所述闪光灯组件的手电筒发射的准备操作的装置包括用于检测被拍摄对象的亮度低于预定亮度并产生检测信号的计量装置, 开始拍摄,具有用于产生第一信号的第一操作级和第二操作级的操作装置,用于在第一操作级之后产生第二信号,响应于第二信号开始拍摄,以及包括定时器装置 响应于所述第一信号,计数比从所述第一信号产生之后所需的时间短的预定时间,以响应于所述第二信号开始拍摄,所述装置使所述闪光灯单元响应于手电筒发射的预备操作 与定时器装置产生的计量装置的检测信号相关联 影响时间计数。

    Camera having a magnetic flux shielding device
    7.
    发明授权
    Camera having a magnetic flux shielding device 失效
    摄像机具有磁通屏蔽装置

    公开(公告)号:US5857123A

    公开(公告)日:1999-01-05

    申请号:US921513

    申请日:1997-09-02

    摘要: A camera having a shielding device to prevent leaked magnetic flux generated by a drive motor from affecting magnetic information recorded on film in a camera in which a drive motor is provided within a winding spool. The shielding device includes an inner shielding member and an outer shielding member which shield magnetic flux from the drive motor, even if the intensity of the magnetic flux leaked from the motor fluctuates. The outer shielding member is made of permalloy B with a high maximum relative permeability, and is provided outside of a motor housing case for the drive motor. The motor housing case forms the inner shielding member, and is made of pure iron having a high saturated magnetic flux density. The leaked magnetic fluxes generated by the drive motor having a strong magnetic field intensity are shielded by the motor housing case while other leaked magnetic flux having a weak magnetic field intensity is shielded by the outer shielding member.

    摘要翻译: 一种具有屏蔽装置的相机,用于防止由驱动电动机产生的泄漏的磁通影响记录在照相机中的胶片上的磁信息,其中驱动电动机设置在卷轴内。 屏蔽装置包括内部屏蔽构件和外部屏蔽构件,其屏蔽来自驱动电动机的磁通量,即使从电动机泄漏的磁通量的强度变动。 外屏蔽部件由具有高最大相对磁导率的坡莫合金B制成,并且设置在用于驱动电动机的电机外壳的外侧。 马达壳体形成内屏蔽构件,并且由具有高饱和磁通密度的纯铁制成。 由具有强磁场强度的驱动电动机所产生的泄漏的磁通被电动机壳体屏蔽,而具有弱磁场强度的其它泄漏磁通被外屏蔽构件屏蔽。

    Automatic focusing camera
    9.
    发明授权
    Automatic focusing camera 失效
    自动对焦相机

    公开(公告)号:US5144358A

    公开(公告)日:1992-09-01

    申请号:US603246

    申请日:1990-10-24

    IPC分类号: G02B7/34

    CPC分类号: G02B7/34

    摘要: An automatic focusing camera comprises a measuring device formed integrally with a camera housing, defining a distance measuring zone selectively extended in different directions, and adapted for producing information employed for focusing to an object contained in the extended distance measuring zone. A position detecting device for detecting the position of the camera housing, and a device for varying the extending direction of the distance measuring zone, in response to the position of the camera housing detected by the position detecting device.

    摘要翻译: 自动聚焦照相机包括与相机外壳整体形成的测量装置,其限定了沿不同方向选择性地延伸的距离测量区域,并且适于产生用于聚焦到包含在扩展距离测量区域中的物体的信息。 用于检测相机外壳的位置的位置检测装置和用于改变距离测量区域的延伸方向的装置,响应于由位置检测装置检测到的相机外壳的位置。