Automatic focusing device for enlarging cameras

• 1. 照相机的自动对焦装置及其自动对焦方法 [P] . 中国专利： CN1896860B . 2012.08.22
• 2. 自动对焦方法以及电子照相机的自动对焦装置 [P] . 中国专利： CN100543574C . 2009.09.23
• 3. AUTOMATIC FOCUSING DEVICE FOR REPRODUCTION ENLARGERS AND PHOTOGRAPHIC CAMERAS [P] . SU853597A1 . 1981-08-07

  机译： 放大和照相摄象机的自动聚焦装置

• 4. AUTOMATIC FOCUSING DEVICE FOR COPYING OR ENLARGING CAMERAS AND THE LIKE. [P] . 美国专利： US1211302A . 1917-01-02

  机译： 自动对焦设备，用于复制或放大摄像机等。

• 5. METHOD OF ADJUSTING AND REGULATING AUTOMATICALLY-FOCUSED ENLARGING OR COPYING CAMERAS. [P] . 美国专利： US1103343A . 1914-07-14

  机译： 调整和调节自动对焦放大或复印相机的方法。

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• 8. Automatic Focussing Devices for Photographic Cameras [R] . Birgmeir, K. , Hell, A. 1983

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