An apparatus for viewing a stereoscopic display comprises a frame chassis, a hinge mechanism, a left lens assembly, a right lens assembly, and a sensor array. The hinge mechanism allows the left lens assembly and the right lens assembly to switch from a first orientation to a second orientation. The left lens assembly is coupled to the frame chassis via the hinge mechanism and is configured to be transparent to a first image output by the stereoscopic display and opaque to a second image output from the stereoscopic display, while the right lens assembly is coupled to the frame chassis via the hinge mechanism and is configured to be transparent to the second image output and opaque to the first image output. The sensor array is positioned to detect a current orientation of the left lens and the right lens.
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