Method and apparatus for presenting stereoscopic images

Details Method and apparatus for presenting stereoscopic images Method and apparatus for presenting stereoscopic images

G - Physics

03

B

G03B 21/32 (2006.01) G02B 27/22 (2006.01) G03B 35/16 (2006.01) G03B 35/26 (2006.01) H04N 13/00 (2006.01)

Patent

CA 2146811

Stereoscopic images are presented using so-called "alternate eye" projection while blocking the viewer's respective eyes alternately and in synchronism with the display of images so that the viewer's left eye sees only left eye images and the right eye sees only right eye images. Blocking is effected using electro-optic liquid crystal shutters each of which has a front linear polarizing filter with a defined axis of polarization. The respective shutters for the viewer's two eyes are oriented so that the said defined axes of polarization are at an angle with respect to one another. The projected images are linearly polarized so that the left eye images are polarized along an axis that is parallel to the defined axis of the electro- optic shutter for the viewer's left eye and the right eye images are polarized along an axis parallel to the defined axis of the electro-optic shutter for the viewer's right eye. The invention significantly reduces perceptible ghosting even where high contrast images are projected, such as dark figures against a white background.

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