Viewer with varifocal lens and video display system
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United States of America Patent
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Jan 9, 2018
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app pub date -
May 21, 2014
filing date -
May 21, 2013
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Abstract
A viewer includes a varifocal lens and a lens controller that adjusts a focal length of the varifocal lens, and can adjust a focal point in accordance with eye movement of the user. When a 3D image viewing detector detects 3D image viewing by the user, a focal length fixing section instructs a lens controller to fix a focal length of the varifocal lens irrespective of eye movement of the user.
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