Optical: systems and elements – Stereoscopic – Stereo-viewers
Patent
1995-05-12
1999-08-17
Spyrou, Cassandra
Optical: systems and elements
Stereoscopic
Stereo-viewers
359476, 359408, 359466, 359477, G02B 2722, G02B 2702, G02B 2300
Patent
active
059402105
ABSTRACT:
A collapsible stereoscopic viewer includes a generally rectangular housing formed of parallel sides and top and bottom surfaces all pivotally secured to form a collapsible rectangular. A pair of internal walls are similarly secured between the top and bottom surfaces to form two optical channels within the housing. A pair of lens supports are pivotally coupled to the housing interior and may be secured therein using a tab and slot attachment. Each lens support receives and supports a conventional eyepiece lens. A pair of front walls are pivotally secured within the housing interior and may be locked into a vertical position by a tab and slot arrangement. Each front wall defines an aperture aligned with one of the eyepieces. The housing further includes a pair of downwardly extending curved arms which support a pivotally coupled planar image plane movable between a vertical and horizontal position upon the arms. The entire viewer may be collapsed by pivoting the lens supports and front walls outwardly and collapsing the rectangular housing while pivoting the image plane to a generally coplanar relationship with the collapsed housing and curved arms.
REFERENCES:
patent: 2368480 (1945-01-01), McClure
patent: 2616333 (1952-11-01), Tinker
patent: 2821884 (1958-02-01), Austin
patent: 2930286 (1960-03-01), Rabben
patent: 3734596 (1973-05-01), Nerlich
Chang Audrey
Ekstrand Ray A.
Spyrou Cassandra
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