Light field display with near virtual-image mode

This study proposes a near virtual-image method for a flat-panel light field display using both lens and aperture arrays. The pixels of the flat-panel display are located between the lens array and its focal plane, which increases the viewing zone. The enlarged virtual images of the pixels are generated, and a single enlarged virtual pixel image is transmitted by each aperture of the aperture array. The aperture array also reduces aberrations of the lens array. Because the apertures within the aperture array are wider than the pitch of the pixels, this produces a higher light efficiency than light field displays with aperture arrays. The effectiveness of the proposed technique was verified using constructed light field displays with only horizontal parallax.