Display system using a pair of polarized sources with a 3-D display mode and two 2-D display modes

摘要

A display system includes a driver configured to create command signals for generating a pair of images along two different optical paths; a pair of polarized sources, each polarized source configured to produce a polarized image of one of the pair of images along a respective optical path at substantially the same time based on a command signal from the driver, the first of the pair of polarizer sources configured to produce a different polarization than the second of the pair of polarizer sources; a polarization co-alignment element configured to optically align the polarized images from the respective polarizer along a common optical path; and a display screen configured to display the co-aligned polarized images. Depending on the mode of the display system, 3-D polarized glasses may be worn by the viewers for observing the displayed images.

主权项

1. A display system comprising:
a driver configured to create command signals for generating a pair of images along two different optical paths; a pair of polarized light-emitting elements, each polarized light-emitting element configured to produce a polarized image of one of the pair of images along a respective optical path at substantially the same time based on a command signal from the driver, the first of the pair of polarized light-emitting elements configured to produce a different polarization than the second of the pair of polarized light-emitting elements; an achromatic polarizing beam splitter (APBS) comprising a Wollaston prism and configured to optically align the polarized images from the respective polarizer along a common optical path; and a display screen configured to display the co-aligned polarized images; wherein the driver is switchable among a 3-D display mode, a first 2-D display mode, and a second 2-D display mode; wherein in the 3-D display mode, the driver configures the command signals so that the first and second polarized light-emitting elements produce stereoscopic or autostereoscopic images; wherein in the first 2-D display mode, the first polarized light-emitting element provides a primary display, and the second polarized light-emitting element provides a backup display configured to activate if the primary display fails; and wherein the second 2-D display mode, the driver configures the command signals so that the first and second polarized light-emitting elements simultaneously produce the same images, the aligned images being brighter than each polarized image before alignment.