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:
Mar. 03, 1992
Filed:
Jul. 06, 1990
Minoru Matsuzaki, Hachioji, JP;
Masaki Tokui, Shiroyama, JP;
Olympus Optical Co., Ltd., Tokyo, JP;
Abstract
A flash apparatus which is detachably mounted on a camera main body is operated in a light emission mode of an open control scheme, in which the light emission amount of the light-emitting portion is controlled by a preset guide number, and in a light emission mode of an automatic control scheme, in which the light emission amount of the light-emitting portion is controlled by a metering result obtained by metering light reflected by an object to be photographed. The flash apparatus includes one of the following switches a bounce state detection switch which is turned on when the light emission axis of the light-emitting portion is inclined with respect to the optical axis of a photographing lens, an OFF-camera detection switch which is turned on when the flash apparatus is to be used while it is detached from the camera main body, and a converter mounting detection switch which is turned on when a converter is mounted on the photographing lens. A CPU of the flash apparatus forcibly switches the apparatus to the light emission mode of the automatic control scheme when any one of the detection switches is turned on.