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:
Dec. 27, 1983
Filed:
Jan. 29, 1981
Applicant:
Inventors:
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61B / ;
U.S. Cl.
CPC ...
351206 ; 354 62 ;
Abstract
A fundus camera includes an objective lens which is movable in a plane perpendicular to the principal optical axis thereof. The camera also includes an optical system comprising four reflecting surfaces which move as the objective lens is moved to compensate for an optical path length, the arrangement being such that a visual axis of an eye being examined can be brought into alignment with the principal optical axis of the objective lens without changing the length of the observation and photographing light path, by means of a movement of only part of the optical system and without moving the entire main body.