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. 20, 1978
Filed:
Jun. 22, 1976
Edwin H Land, Cambridge, MA (US);
Richard C Kee, Chestnut Hill, MA (US);
Polaroid Corporation, Cambridge, MA (US);
Abstract
A camera with a detachable electronic flash unit. The camera includes apparatus effective when the flash unit is detached for making an automatically controlled exposure under ambient light conditions. When the flash unit is attached, the ambient exposure control system is disabled and operation of the camera is inhibited until charging of the flash unit is initiated by pressing a button. When the flash unit is charged, the camera is enabled to make a flash exposure by triggering the flash unit, during an interval of time in which the light output of the electronic flash unit is regulated so that a uniform flash of light will be produced when the shutter is actuated.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile