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:
Jun. 03, 1980
Filed:
Mar. 29, 1979
Peter T Quinn, Littleton, CO (US);
Stephen Blecher, Littleton, CO (US);
Rollei of America, Inc., Littleton, CO (US);
Abstract
A calculator device for an electronic photoflash system in which a photosensor receives light reflected back from the scene being photographed and generates an electrical signal for providing termination of the flash upon sensing a predetermined amount of light. The light received from the scene is reflected from either of two surfaces having different light reflectivities, prior to receipt by the photosensor. The pair of surfaces are carried by a slidable member and selectively positionable at the point of light reflection in accordance with the selection of indicia carried on the front side of the member, by movement of the same by the photographer.