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。