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Multi-motor camera for normal and trimming photography having variable focal length photographing lens and finder and variable illuminating angle flash device

机译:具有可变焦距摄影镜头和取景器以及可变照明角度闪光灯的用于普通和微距摄影的多电机照相机

摘要

A camera having selectable normal and trimming photographing modes and a photographing zoom lens, has a control system, including a zooming motor for driving the zoom lens, operable to set a desired focal length in response to the actuation of a control element. When a desired focal length is within the normal zooming range of the zoom lens, the normal photographing mode is selected and the zoom lens is driven to the desired focal length in response to actuation of the control element. When the desired focal length is greater than the focal length at the telephoto end of the zoom lens, the trimming photographing mode is selected, and the zoom lens is driven to the telephoto end, is then driven toward the wide angle end to a predetermined focal length at which a product of the predetermined focal length and a predetermined trimming magnification is equal to the focal length at the telephoto end, and is then again driven toward the telephoto end to a further focal length at which the product of the further focal length and the predetermined trimming magnification is equal to the desired focal length.
机译:具有可选择的正常拍摄模式和微调拍摄模式的相机以及拍摄变焦镜头,具有控制系统,该控制系统包括用于驱动变焦镜头的变焦马达,该控制系统可响应于控制元件的致动而设置期望的焦距。当期望的焦距在变焦镜头的正常变焦范围内时,选择正常拍摄模式,并且响应于控制元件的致动将变焦镜头驱动到期望的焦距。当所需的焦距大于变焦镜头的望远端的焦距时,选择微调拍摄模式,然后将变焦镜头驱动到望远端,然后朝广角端驱动到预定的焦点预定焦距与预定修整倍率的乘积等于望远端的焦距,然后再次朝望远端驱动至另一焦距,该焦距等于该焦距与预定的修整倍率等于期望的焦距。

著录项

  • 公开/公告号US5848302A

    专利类型

  • 公开/公告日1998-12-08

    原文格式PDF

  • 申请/专利权人 NIKON CORPORATION;

    申请/专利号US19970909305

  • 发明设计人 KIYOSADA MACHIDA;

    申请日1997-08-11

  • 分类号G03B13/10;

  • 国家 US

  • 入库时间 2022-08-22 02:09:17

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