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。
2
Eyepiece: widefield , high-point eyepiece , it can observe image of observation specimen with glasses.
目镜： 使用高眼点广角目镜，为佩戴眼睛的观察者提供方便。
3
A novel lightweight, widefield-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.