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:
Dec. 22, 1981
Filed:
Nov. 30, 1979
Applicant:
Inventor:
Claus Prochnow, Braunschweig, DE;
Assignee:
Rollei-Werke Franke & Heidecke GmbH, Braunschweig, DE;
Primary Examiner:
Int. Cl.
CPC ...
G03B / ;
U.S. Cl.
CPC ...
354127 ; 354145 ; 354198 ;
Abstract
Disclosed is a camera having a flash unit with at least two flash power levels. A distance adjustment also used for focusing the lens of the camera and a film sensitivity adjustment combine to position a switch which selects the correct one of the flash power levels for correct exposure of the film. In preferred embodiments, a range indicator, based on the film sensitivity, indicates the distance range over which the various power levels of the flash unit can correctly expose the film. Focusing the camera lens also moves an indicator which, if within the range, selects the appropriate power level for operation when a picture is to be taken.