Photographic-quality autostereoscopic screen

EP4643173A1Pending Publication Date: 2025-11-05ALIOSCOPY
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Patent Information

Application Number
EP2023728078
Authority / Receiving Office
EP · EP
Patent Type
Applications
Current Assignee / Owner
Priority Date
2022-12-29
Filing Date
2023-05-25
Publication Date
2025-11-05

AI Technical Summary

Technical Problem

Autostereoscopic screens face challenges in achieving continuous parallax and high-quality relief due to discrete jumps between stereoscopic pairs and moiré effects, which are difficult to overcome with traditional pixel panel structures.

Method used

The development of an autostereoscopic screen with a lenticular network of cylindrical lenses inclined at an angle of arctan(1/12) and a pixel panel arrangement that codes and decodes viewpoints within vertical blocks, allowing for continuous parallax and reduced moiré effects by distributing viewpoints across narrower lobes and using intermediate viewpoints to smooth out discretization.

Benefits of technology

The solution enables a continuous parallax experience without apparent discretization, improving image quality by adapting the number of viewpoints based on disparity, reducing ghosting, and maintaining high resolution and contrast levels.

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Abstract

The invention relates to a photographic-quality autostereoscopic display screen (10) for displaying an autostereoscopic image with MxN viewpoints, N being an odd integer and M being an integer chosen from 1, 2, 3 and 6, the screen comprising a panel of pixels (20) which are arranged in rows and columns, each pixel (26) consisting of a plurality of P active sub-pixels of different colours and an ordered array of cylindrical lenses (30) which are inclined with respect to the columns of the screen by an angle equal to arctan(1 / 12), the array having a pitch with a width of N / 2 pixels in order to be able to differentiate the even and odd lenses (30) of the array by discrete distributions of the active (26) and black (24) zones of the pixels which are arranged under the lenses and in order to decode each of the MxN viewpoints which are distributed within N vertical blocks at a height of 6 pixels, derived from M viewpoints every 12 lines if the sub-pixels of the panel are horizontal, and which are distributed within PxN vertical blocks at a height of 6 / P sub-pixels, derived from M / P viewpoints every 12 / P lines if the sub-pixels of the panel are vertical.
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