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    • 47. 发明授权
    • Focusing device of a camera
    • 相机的聚焦装置
    • US4982216A
    • 1991-01-01
    • US352263
    • 1989-05-16
    • Yoshinobu KudoYoshiaki HataMotohiro Nakanishi
    • Yoshinobu KudoYoshiaki HataMotohiro Nakanishi
    • G02B7/02G02B7/08G02B7/28G02B9/34G02B13/18
    • G02B7/28
    • There is disclosed a device for correcting and compensating variations of the back focal length caused by temperature changes in a photographic lens system which incorporates at least one lens component made of a plastic material. The device includes a lens drive which axially moves the lens system to obtain a fully focused image of an object to be photographed, and a temperature sensor which senses surrounding temperature conditions and produces output signals representing the sensed temperature condition. A lens control is also provided in the device, and functions in response to the output signals from the temperature sensor to control the lens drive in a manner to compensates any temperature-related variation of the back focal length of the lens system.
    • 公开了一种用于校正和补偿由摄影透镜系统中的温度变化引起的后焦距的变化的装置,其包括由塑料材料制成的至少一个透镜部件。 该装置包括透镜驱动器,其轴向移动透镜系统以获得要拍摄的物体的完全聚焦的图像;以及温度传感器,其感测周围的温度条件并产生表示所感测的温度条件的输出信号。 在该装置中还提供透镜控制,并且响应于来自温度传感器的输出信号而起作用以以补偿透镜系统的后焦距的任何温度相关变化的方式来控制透镜驱动器。
    • 50. 发明授权
    • Photographic camera
    • 摄影相机
    • US4933692A
    • 1990-06-12
    • US351188
    • 1989-05-12
    • Yoshinobu KudoManabu InoueKeisuke MaedaYujiro MimaHiroshi Ootsuka
    • Yoshinobu KudoManabu InoueKeisuke MaedaYujiro MimaHiroshi Ootsuka
    • G03B17/12
    • G03B17/12
    • A photographic camera which assures proper use of a front converter and prevents out-of-focus photographing when the front converter is used and wherein a switch for detecting whether a tele-converter is in its operative position or inoperative position is not exposed outside the camera. The switch is provided in a converter body removably mounted on a camera body and is connected in series to another switch also provided in the camera body for operation upon attachment of the converter body to the camera. When the converter is mounted in its operative position on the camera body, it is detected by a control circuit in the camera body in accordance with a signal received from the switches, and the control circuit controls various functions of the camera in a different manner from that when the converter is not in its operative position.
    • 一种照相机,其确保正面使用前转换器并防止使用前转换器时的失焦拍摄,并且其中用于检测远程转换器是否处于其操作位置或不工作位置的开关不暴露在照相机外部 。 开关设置在可拆卸地安装在相机主体上的转换器主体中,并且串联连接到另外还设置在相机主体中的开关,用于在将转换器主体附接到相机时进行操作。 当转换器安装在相机主体上的操作位置时,根据从开关接收到的信号由相机机身中的控制电路检测到,并且控制电路以不同的方式控制相机的各种功能 当转换器不在其操作位置时。