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. 19, 1982
Filed:
Feb. 05, 1979
Egon Gahler, Hattersheim, DE;
Braun AG, Frankfurt am Main, DE;
Abstract
An electronic flash unit has a flash tube and a flash circuit which includes an internal light sensor that interrupts the supply of electricity to the flash tube when it senses that the flash light reflected from an object exceeds a predetermined threshold value. The unit also has a connector for connecting it to an external light sensor and an arrangement for disconnecting the internal sensor from the circuit when connection is made to an external sensor, and vice versa. An adapter circuit is connected to the connector and allows the unit to be used with a camera having its own built-in light sensor so that, when the unit is used with such a camera, the camera sensor performs the function otherwise performed by the internal sensor of the unit.