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. 19, 1999
Filed:
Jan. 22, 1998
Masahiro Inazuka, Chiba-ken, JP;
Hiroshi Ito, Saitama-ken, JP;
Asahi Kogaku Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
A field frame switching apparatus for a finder in which an elongated standard visual field, a narrow-width visual field and a laterally-elongated visual field can be selected. A pair of narrow-width visual-field-forming light-interception frames are provided with vertical light-interception walls which are adapted to block out the right and left ends of the standard visual field. A pair of laterally-elongated visual-field-forming light-interception frames are provided with lateral-light-interception walls are adapted to block out the upper and lower ends of the standard visual field. An operation member is adapted to move the narrow-width visual-field-forming light-interception frames in a first direction toward a narrow-width field-frame-forming position in which the vertical light-interception walls are located within the standard visual field frame and in a second direction toward a laterally-elongated field-frame-forming position. An association movement mechanism moves the lateral-light-interception walls of the laterally-elongated field forming light-interception frames into or from the standard visual field frame. The invention also discloses an operation apparatus for the field frame switching apparatus, and an operation apparatus for a rotary operation member.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile