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:
Sep. 07, 1993
Filed:
Oct. 15, 1990
Applicant:
Inventors:
Assignee:
Kowa Company Ltd., , JP;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61B / ;
U.S. Cl.
CPC ...
351221 ; 351212 ; 351214 ;
Abstract
An ophthalmologic apparatus equipped with a projection optical system for projecting a laser beam spot image onto a prescribed point of an eye under examination has a zoom lens provided in the projection optical system for enabling the diameter of the projected spot image to be varied and some of the lenses of the zoom lens are made movable for enabling projection of a blurred spot image.