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. 07, 1983
Filed:
Sep. 09, 1981
Yuzuru Inoue, Machida, JP;
Victor Company of Japan, Limited, Yokoham, JP;
Abstract
The device according to the present invention comprises a photosensitive element responsive to counter-light which enters into an optical view finder from its eyepiece, a detector responsive to the signal from the photosensitive element for producing a control signal when the intensity of the counter-light exceeds a predetermined value, and a shutter arranged to close in response to the control signal for preventing the counter-light from propagating through the optical system of the view finder to another optical system of a video camera, movie camera or the like. Thus, picture quality of the camera or the like is prevented from deteriorating due to the counter-light entering into the view finder. The shutter may be replaced with an aperture stop or a filter so that the shooter can see an objective image through the view finder, while the amount of counter-light transmitted to the optical system of the camera or the like can be reduced.