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    • 10. 发明授权
    • Medical diagnostic instrument with variable focus liquid lens
    • 具有可变焦点液体透镜的医疗诊断仪器
    • US07553020B2
    • 2009-06-30
    • US11541511
    • 2006-09-29
    • Ervin GoldfainDaniel C. Briggs
    • Ervin GoldfainDaniel C. Briggs
    • A61B3/14A61B3/10
    • A61B3/12A61B1/0019
    • A diagnostic instrument includes an illumination system for providing illuminating light and an imaging system for directing the illuminating light to a target and for transmitting light reflected from the target to a viewing location. The imaging system includes an electrically controllable variable focus liquid lens assembly for focusing the light reflected from the target at the viewing location. The liquid lens assembly includes at least one liquid lens including a housing filled with a first liquid, and a drop of a second liquid being in contact with the first liquid in a predetermined form. The lens further includes a first electrode insulated from the second liquid and a second electrode in electrical contact with the first liquid. A variable voltage control selectively applies a voltage to the first and second electrodes to vary the focus of the lens. An electronic imager is provided to capture the reflected target image.
    • 诊断仪器包括用于提供照明光的照明系统和用于将照明光引导到目标并将从目标反射的光发射到观察位置的成像系统。 成像系统包括电可控可变焦点液体透镜组件,用于将从目标反射的光聚焦在观看位置。 液体透镜组件包括至少一个液体透镜,其包括填充有第一液体的壳体,以及以预定形式与第一液体接触的第二液体液滴。 透镜还包括与第二液体绝缘的第一电极和与第一液体电接触的第二电极。 可变电压控制选择性地将电压施加到第一和第二电极以改变透镜的焦点。 提供电子成像器来捕获反射的目标图像。