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DATED DECEMBER 4, 1990
SPECTACLES WITH SWING ARM REAR VISION ELEMENTS
One feature of the invention is that the rear viewing surfaces can be
positioned far ahead of the spectacles' eyepiece. This feature increases
the rear field of vision and reduces eye rotation when viewing rearwardly.
Another feature, in addition to the foregoing feature, is that the angular
and lateral positions of the rear viewing surfaces can be independently
adjusted at their operative positions. The swing arms are thin narrow
symmetrically opposite members whose shapes are preferably similar to
the spectacles' temples. The swing arms are rotatably mounted at one end
portion thereof to the forward portions of the spectacles' temples. At
the other end portions of the swing arms are spherical joints which connect
the swing arms to rear vision members. One surface of the rear vision
members is reflective for viewing rearwardly.
At their operative positions, the swing arms extend forwardly of the
eyepiece and at their stored positions the swing arms are rearwardly of
the eyepiece, aligned with and adjacent to the temples.
In the first aspect of the invention, the axes about which the swing
arms are rotatable are horizontal and transverse to the temples. In the
second aspect of the invention, the axes of rotation of the swing arms
are vertical and parallel to the temples. In still yet another aspect,
a means is provided for adjusting the position of the rear vision members
fore and aft with respect to the eyepiece.
It is a primary object of the invention to provide a fashionable, effective,
easy to use pair of rear vision spectacles which will be widely accepted
by the public.
Further features, benefits, objects and manner of using the invention
will be understood from the ensuing description and drawings which disclose
the invention in detail.
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