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:
Sep. 28, 2004
Filed:
Feb. 07, 2003
Nobuyoshi Hagiuda, Yokohama, JP;
Nikon Corporation, Tokyo, JP;
Abstract
In the present invention, slave light emissions are controlled in such a manner that a flash light amount ratio between master and slave flash lights during pre-flash is caused to be approximately equal to a flash light amount ratio between master and slave flash lights during main flash. In another aspect of the present invention, the slave light emissions are controlled in such a manner that a flash time ratio between master and slave flash lights during pre-flash is caused to be approximately equal to a flash time ratio between master and slave flash lights during main flash. Such a control over the slave light emissions realizes a flash illumination having an appropriate amount of light.