A binocular-type viewing apparatus designed in such a manner that a user, wanting to view an object located at a distance above the viewer's horizontal line of sight, need only direct his/her view downward into the apparatus to view the elevated object. Thus the eyepiece component has an optical axis inclined...
source Optical Component patent applications http://www.freshpatents.com/-dt20131031ptan20130286475.php
via
source Optical Component patent applications http://www.freshpatents.com/-dt20131031ptan20130286475.php
via
No comments:
Post a Comment