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. 09, 1981
Filed:
Jan. 10, 1978
Applicant:
Inventors:
Franz Muchel, Konigsbronn, DE;
Albrecht Vogel, Oberkochen, DE;
Assignee:
Carl Zeiss-Stiftung, Wuerttenberg, DE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61B / ;
U.S. Cl.
CPC ...
351 13 ; 351-6 ;
Abstract
The invention contemplates an improved optical system for illuminating the retina or ground of the eye and having particular application to a hand-held ophthalmoscope. The optical system, thus embodied, permits selective modification of image scale, for a test mark or marks projected in the eye. Two embodiments are disclosed.