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发明授权
US07901072B1 Prismatic ocular device and personal video display device incorporating same 有权
棱镜式眼部装置和包含其的个人视频显示装置

Prismatic ocular device and personal video display device incorporating same
摘要：
An ocular device includes a housing, a rotatable ring, a first prism fixed in the rotatable ring, an indexable ring and a second prism fixed in the indexable ring. The housing has a stepped inner profile defining first and second circular tracks in the housing, the tracks being concentric about a rotational axis. The rotatable ring is disposed in the first circular track and is freely rotatable about the rotational axis with respect to the housing. The indexable ring is disposed in the second circular track and is indexable about the rotational axis.
摘要（中）：

眼睛装置包括壳体，可旋转环，固定在可旋转环中的第一棱镜，可转位环和固定在可转位环中的第二棱镜。 壳体具有限定壳体中的第一和第二圆形轨道的阶梯形内轮廓，轨道围绕旋转轴线同心。 可旋转环设置在第一圆形轨道中并且可相对于壳体绕旋转轴线自由旋转。 可转位环设置在第二圆形轨道中并且可围绕旋转轴线转位。

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