45‐3: Eye‐Box Measurement for Augmented‐Reality Waveguides with Pupil Expansion

The eye box is an important index in near‐eye display which describes the three‐dimensional stereo space in which the near‐eye display device can clearly and completely see the virtual image, and the size of the eye box determines the range of positions in which the near‐eye display device can accommodate the movement of the eye for users with different pupil distances. Conventional methods based on luminance or MTF scanning of the near‐eye‐display are a time‐consuming process, and the eye box luminance uniformity of the extended waveguide in augmented reality will make it more difficult to unify the selection of the reference and the threshold luminance Therefore, this paper proposes an eye box measurement for augmented reality devices with pupil extended, which is based on the analysis of the light distribution from the boundary view outside the eye box, by analyzing the parameters of spot separation, combining the field of view and then calculating the size of the eye box at a particular eye relief, the method can also be used to determine the three‐dimensional stereo size of the eye box of a near‐eye display device Therefore, the method can also be usedto determine the 3D stereo dimensions of the eye box The method is efficient and fast as it only requires the light spot distribution map of the boundary view outside the eye box region to analyze the 3D dimensions of the eye box