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首页> 外文会议>Advanced Biomedical and Clinical Diagnostic Systems IV; Progress in Biomedical Optics and Imaging; vol.7 no.3 >Development of a dual-view endoscope system
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Development of a dual-view endoscope system

机译：开发双视野内窥镜系统

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We demonstrate a new endoscope system for laparoscopic surgery that provides two different views simultaneously. One is a 'wide view' and the other is an 'enlarged view' derived from the wide view with an optical image-shifting mechanism. By using this endoscope, surgeons can observe a surgical area as an enlarged view without moving or rotating the endoscope. Moreover, the wide view is useful for examining the outside of a surgical area. They can move the enlarged view within the area of the wide view by using the image-shifting mechanism. This system consists of a rigid scope and a 'zoom unit.' The rigid scope includes a set of optical lenses for the wide view angle (120 degrees) and light-guide fibers built in for illumination. These fibers are connected to a light source directly. The zoom unit includes imaging optical elements and two CCD cameras. In the zoom unit, an image provided by the rigid scope is divided into two ways by a half-mirror. One image is captured by the first CCD camera with relay lenses for a wide view. The other passes through a Porro prism (II), which is used to shift the enlarged view vertically and horizontally, and zoom lenses with a three variable power. Then, the image is captured by the second CCD camera for an enlarged view. A working distance between the tip of the rigid scope and the surface of viscera is 100mm that is sufficient for surgical operation.
机译：我们演示了一种用于腹腔镜手术的新型内窥镜系统，该系统可同时提供两种不同的视图。一个是“广角视图”，另一个是从广角视图通过光学像移机制获得的“放大视图”。通过使用该内窥镜，外科医生可以在不移动或旋转内窥镜的情况下以放大视图观察手术区域。此外，宽视野对于检查手术区域的外部是有用的。他们可以使用图像移动机制在宽视角区域内移动放大的视角。该系统由一个刚性瞄准镜和一个“缩放单元”组成。刚性镜包括一组用于宽视角（120度）的光学透镜和内置照明用的光导纤维。这些光纤直接连接到光源。变焦单元包括成像光学元件和两个CCD相机。在变焦单元中，由刚性镜提供的图像被半反射镜分为两种方式。第一个带有中继镜头的CCD摄像机可以捕获一个图像，从而获得宽广的视野。另一个穿过Porro棱镜（II），用于在垂直和水平方向上移动放大的视图，以及具有三倍变倍镜的变焦镜头。然后，第二个CCD相机捕获图像以放大视图。刚性内窥镜尖端与内脏表面之间的工作距离为100毫米，足以进行外科手术。

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