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. 25, 1979
Filed:
Sep. 30, 1977
Applicant:
Inventors:
Staffan B Persson, Danielson, CT (US);
Rato Buhler, Spencer, MA (US);
Assignee:
American Optical Corporation, Southbridge, MA (US);
Primary Examiner:
Int. Cl.
CPC ...
G01C / ; A61B / ;
U.S. Cl.
CPC ...
356-3 ; 351-1 ; 351 30 ; 356153 ; 356399 ;
Abstract
An optical alignment system having a movable portion which contains a centering reticle and range finder, the movable portion is optically coupled to a stationary portion including a field lens to permit the precise positioning of a member relative to an object observed at the field lens. A zone parallel light and an image on the field lens permit adjustment of the member and movable portion without corresponding movement of the operator's head. The system is readily combined with an optometer to provide precision positioning of an optometer eyepiece relative to a patient's eye.