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:
Oct. 08, 2002
Filed:
Apr. 04, 2000
Applicant:
Inventor:
Chi Ping Yeung, Sai Yung Pun, HK;
Assignee:
Concord Camera Corp., Hollywood, FL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B 1/310 ; G03B 1/724 ;
U.S. Cl.
CPC ...
G03B 1/310 ; G03B 1/724 ;
Abstract
An apparatus for alternating between two field frames in a camera viewfinder. The mask has a foldable mask with an aperture, with the mask being movable between two positions. In the first position, the mask is unfolded and interposed in the light-path of the viewfinder, thereby framing the viewfinder image in the shape of the aperture. In the second position, the mask is folded and stored compactly alongside the viewfinder, thereby not interfering with the image in the viewfinder.