Perceived Image Depth for Autostereoscopic Displays

Abstract

An autostereoscopic display provides an extremely deep projection area by observing a relationship between a desired depth of projection and an autostereoscopic display design that includes a focal length of lenticles of a lenticular array and a number of views. The relationship specifies a projected depth at which lenticular crossover can occur for a given autostereoscopic with the specific lenticular focal length and number of views. Approximations can be used to simplify the relationship such that the projected depth is directly related to a product of the focal length and the number of views. To reduce optical aberrations, lenticles of the lenticular array include meniscus-cylinder lenses.

Description

FIELD OF THE INVENTION[0001]The present invention relates generally to autostereoscopic displays, and, more particularly, to a video autostereoscopic display with significantly improved depth of projection.BACKGROUND OF THE INVENTION[0002]Conventional autostereoscopic displays use arrays of lenses or parallax barriers or other view selectors to make a number of pixels of the display visible to one eye of a viewing person and to make a number of other pixels of the display visible to the other eye of the viewing person. By isolating the pixels of the display visible to each eye, the two fields of a stereoscopic image can be presented on the display. The presentation of separate fields to each eye is often used to cause the viewer to perceive a three-dimensional image.[0003]Current stereoscopic displays project a perceived depth of about a few centimeters. In other words, most autostereoscopic displays project portions of an image no more than about 1-2 centimeters in front of, and no...

AI Technical Summary

Benefits of technology

The patent describes a way to make optical devices with less distortion. This is done by using special lenses called meniscus-cylinder lenses, which make the image look more complete. By using these lenses, researchers hope to create better quality optical devices with improved performance.

Problems solved by technology

One of the challenges with such long focal lengths in lenticles of a lenticular array is that a number of optical aberrations become noticeable and problematic.

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