Abstract
We propose a see-through near-eye display featuring an exit pupil expander (EPE), which is composed of two multiplexed slanted gratings. Via a two-dimensional expansion, the exit pupil (EP) is able to be enlarged up to 10 × 8 mm2. Besides, the prescription for correcting the refractive errors can be integrated as well. The design rules are set forth in detail, followed by the results and discussion regarding the efficiency, field of view (FOV), exit pupil, angular resolution (AR), modulation transfer function (MTF), contrast ratio (CR), distortion, and simulated imaging.
Highlights
Following in the footsteps of smartphones, smart glasses are highly anticipated as the mobile computing device
The performance of our near-eye displays (NEDs) is quantitatively analyzed with Code V (Synopsys) and VirtualLab
More detailed parameters for defining aspherical surfaces can be found in Tables 5 and 6
Summary
Following in the footsteps of smartphones, smart glasses are highly anticipated as the mobile computing device. Unlike smartphones, which widely adopt the flat panel displays (FPDs) [1,2,3], smart glasses are equipped with see-through near-eye displays (NEDs) [4,5,6]. The major difference between these two types of display technologies is something called an exit pupil (EP). In NEDs, an exit pupil defines the boundaries to which the eye can be moved. For the sake of its compact form factor, almost every optical component of NEDs needs to be miniaturized
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