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:
Jan. 02, 1990
Filed:
Jan. 30, 1989
William H Goddard, Hilton, NY (US);
Eastman Kodak Company, Rochester, NY (US);
Abstract
An open frame sight viewfinder for a photographic camera comprises an aiming or target ring positioned forward of a correspondingly shaped viewing aperture. The aiming ring is encircled by a relatively narrow annular zone of light rays, including the extreme rays, which pass through the viewing aperture, and it has an outer diameter which is greater than the viewing diameter of the viewing aperture. Consequently, when the camera is correctly aimed at the subject, the aiming ring appears to be concentrically located within the viewing aperture although separated from the periphery of the viewing aperture by a narrow band of ambient light. However, when the camera is incorrectly tilted relative to the subject, the aiming ring appears distorted within the viewing aperture and quickly eclipses a section of the narrow light band.