NEAR-EYE IMAGE PROJECTION SYSTEM HAVING FOVEATED PROJECTION AND EXPANDED EYE-BOX REGION

摘要

A near-eye image projection system, comprising a pin-light array (10) generating incident light beams (100a, 100b) illuminating an optical light modulator (20) configured for modulating the incident light beams and projecting modulated light-beams (110a, 110b); an optical element (32, 70, 40) configured to project the modulated light beams such as to form pin-light images (31, 39) and project projected image light beams (112a, 112b) defining an eye-box region (121a, 121b) along a projection axis (170). The modulated light beams comprise foveal modulated light beams (110a) forming foveal pupil images (31) and projecting foveal projected image light beams (112a) defining a foveal eye-box region (121a), and peripheral modulated light beams (110b) forming peripheral pupil images (39). An exit pupil expansion device (36, 38) is configured to project pupil expanded light beams (104) for each of the peripheral pin-light images (39) and to form peripheral projected image light beams (112b) defining a peripheral eye-box region (121a) wider than the foveal eye-box region.