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:
Oct. 25, 1988
Filed:
Oct. 30, 1987
Applicant:
Inventors:
Volker W Bahnemann, Greenwich, CT (US);
Stanislaw Loth, Nanuet, NY (US);
Assignee:
Arriflex Corporation, Blauvelt, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B / ;
U.S. Cl.
CPC ...
352171 ; 355 68 ; 355 71 ;
Abstract
An apparatus for indicating the contrast range in a scene to be photographed arranged to be situated within the field of view of a viewfinder of a camera. The apparatus includes a plurality of matching fields of respectively differing gray scale reflectance and a light source for illuminating the matching fields to an extent substantially similar to that of the scene to be photographed. By comparing the dark and light areas of the scene with the matching fields, a photographer is able to directly determine the contrast range of the scene and, if necessary, to adjust the same for the desired purpose.