A novel lightweight, wide field-of-view eyepiece for HMD is achieved using a free-form-surface (FFS) prism. The design method is discussed and the design result is presented.
通过采用自由曲面(FFS)棱镜实现了大视场轻型头盔显示器目视光学系统，讨论了FFS头盔显示系统的设计方法并给出了设计结果。
An eyepiece with wide apparent field (in degrees) and lower powers used on a telescope allow wider fields of view.
较宽的目镜视场搭配较低的放大率可以得到更宽的视场角。
To help understand this, we can imagine viewing a single star in the exact center of the telescope eyepiece (field of view).
为了有助于理解这个问题，我们可以想象，在目镜的正中央，看一颗星。
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