comparison eyepiece
1.An eyepiece of 40 °field-of-view (FOV), 30 mm effective focal length, 8 mm exit pupil size and 25 mm exit pupil is designed, with MTF value > 0.25 in the full field of view and the weight is reduced to 1/8 in comparison with the Erfle eyepiece, which conduces to a head mounted display of light weight and high performance.
