The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 18, 1976
Filed:
Apr. 04, 1974
Edwin H Land, Cambridge, MA (US);
Philip G Baker, Peabody, MA (US);
Polaroid Corporation, Cambridge, MA (US);
Abstract
A compact folding camera and viewing device and an apertured flexible mask removably attachable to the viewing device over the eye lens thereof. The mask folds flat within the viewing device in a storage position and when the viewing device is erected to a viewing position the aperture is positioned proximate the exit pupil of the viewing device and is oriented to cause a user to place his eye proximate the exit pupil and sight along the optical axis of the viewing device. The mask is provided with an antireflective face and the aperture is larger than the exit pupil so as not to restrict the field of view through the viewing device.