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:
Nov. 02, 1993
Filed:
Jul. 27, 1992
Kosuke Ito, Toyohashi, JP;
Yoshikatsu Suzumura, Gamagouri, JP;
Kowa Company Ltd., , JP;
Abstract
In an ophthalmologic apparatus comprises an illumination optical system for directing illumination light onto a prescribed point of an eye under examination, and an observation optical system for observing an image of the prescribed point of the eye under examination formed through an object lens. The object lens is movably supported along its optical axis between a first position at which the image point falls at its object point and a second position at which the prescribed point of the eye under examination falls at its image point. As a result, there is a change in the conjugate relationship so that a sharply focused image can be observed when the object lens is at either position thereby making it possible to observe sharply focused images of different magnifications simply by moving the object lens.