US 12,273,505 B2
Accommodation invariant near-eye display
Erdem Sahin, Tampere (FI); Ugur Akpinar, Tampere (FI); Atanas Gotchev, Tampere (FI); and Rajesh Menon, Tampere (FI)
Assigned to TAMPERE UNIVERSITY FOUNDATION SR, Tampere University (FI)
Filed by TAMPERE UNIVERSITY FOUNDATION SR, Tampere University (FI)
Filed on Apr. 20, 2023, as Appl. No. 18/303,801.
Prior Publication US 2024/0357072 A1, Oct. 24, 2024
Int. Cl. H04N 13/398 (2018.01); G02B 27/42 (2006.01); G02B 30/22 (2020.01); G06N 3/08 (2023.01); H04N 13/122 (2018.01); H04N 13/128 (2018.01); H04N 13/332 (2018.01)
CPC H04N 13/398 (2018.05) [G02B 27/4205 (2013.01); G02B 27/4261 (2013.01); G02B 30/22 (2020.01); G06N 3/08 (2013.01); H04N 13/122 (2018.05); H04N 13/128 (2018.05); H04N 13/332 (2018.05)] 19 Claims
OG exemplary drawing
 
1. A stereoscopic near-eye display, NED, assembly for a NED device including a pair of NED assemblies, the NED assembly comprising:
a two-dimensional (2D) display for rendering an image for viewing by an eye of a viewer;
a lens assembly arranged at a predefined distance from the 2D display to allow for viewing the image rendered via the 2D display therethrough, wherein the lens assembly comprises a diffractive optical element (DOE) arranged to provide a phase delay that is different through a plurality of positions of its aperture; and
a display controller comprising a preprocessing portion arranged to derive a preprocessed image based on the received image via application of a preprocessing procedure that is arranged to apply an image-area-position dependent preprocessing in derivation of different sub-areas of an image area of the preprocessed image to account for different transmission characteristic through different sub-apertures of the lens aperture of the lens assembly and supply the preprocessed image for rendering via the 2D display, and
wherein preprocessing procedure and the lens assembly are arranged for displaying the preprocessed image as one that is perceived as sharp for a plurality of accommodation depths that reside within an extended depth of field (DoF) of the NED assembly when viewed through the lens assembly so as to facilitate providing accommodation invariant 3D presentation based on the preprocessed image via operation of the NED device.