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LL/106348
2015
Patent No. US9910286B2 Twinscope 3-D viewer - Inventor: Colleen Woolpert

Patent illustration
US Patent Office
A stereoscope is used for viewing a stereographic pair of images that are placed side-by-side on a card or presented on a digital screen. A lens board has left and right apertures defining a horizontal base line. A pair of prismatic lenses are fitted into the left and right apertures, respectively. A stem or handle projects from the lens board in the plane of the lens board midway between the apertures and perpendicular to the base line. A removable opaque synthetic rubber hood is fitted onto the lens board and has eye covers of generally tubular shape.
 
LL/106348


 

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