System for 3D image projections and viewing

Abstract

Shaped glasses have curved surface lenses with spectrally complementary filters disposed thereon. The filters curved surface lenses are configured to compensate for wavelength shifts occurring due to viewing angles and other sources. Complementary images are projected for viewing through projection filters having passbands that pre-shift to compensate for subsequent wavelength shifts. At least one filter may have more than 3 primary passbands. For example, two filters include a first filter having passbands of low blue, high blue, low green, high green, and red, and a second filter having passbands of blue, green, and red. The additional passbands may be utilized to more closely match a color space and white point of a projector in which the filters are used. The shaped glasses and projection filters together may be utilized as a system for projecting and viewing 3D images.

Description

COPYRIGHT NOTICE[0001]A portion of the disclosure of this patent document contains material which is subject to copyright protection. The copyright owner has no objection to the facsimile reproduction by anyone of the patent document or the patent disclosure, as it appears in the Patent and Trademark Office patent file or records, but otherwise reserves all copyright rights whatsoever.TECHNICAL FIELD[0002]The present invention relates viewing systems and products for projecting and viewing spectrally separated 3-Dimensional (3D) images. The invention is also related to viewing systems used in a Digital Cinema (D-Cinema) Theatre and improves current methods for projecting and viewing a 3D stereoscopic movie.BACKGROUND ART[0003]Methods for 3D stereoscopic projection include Anaglyph, Linear Polarization, Circular Polarization, Shutter Glasses, and Spectral Separation. Anaglyph is the oldest technology, and provides left / right eye separation by filtering the light through a two color f...

AI Technical Summary

Benefits of technology

[0023]The present invention addresses some of the problems with the Spectral Separation method for projecting 3D images, specifically an improvement in the efficiency, increase in the color gamut, and a reduction in the amount of color compensation required. In some cases, the color compensation may not be required. The present invention addresses the efficiency and color space issues by splitting primary colors of the projector into subparts. The splitting of primary colors into subparts is accomplished in part through the filter installed in the projector, which is the main controlling factor in the color space of the system. The efficiency and color gamut of the projected image are both increased using the additional subparts of the split primary colors.

[0024]In one embodiment, the present invention provides a projector filter, comprising, a first filter having a first set

Problems solved by technology

The blue shift is undesirable because it can result in crosstalk between left and right images in a 3D image presentation.

One problem realized is that typical 3-D projection systems have low luminance effici

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