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:
Jul. 14, 1998
Filed:
Mar. 21, 1996
Applicant:
Inventor:
Yoshimi Kohayakawa, Yokohama, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61B / ;
U.S. Cl.
CPC ...
351211 ; 351205 ;
Abstract
An eye refractometer includes a beam splitter arranged in front of an eye to be examined for splitting an optical path from the eye to be examined into an optical path for eye observing and an optical path for eye refracting, an eye observing optical system for observing the eye to be examined from a direction oblique to the viewing direction of the eye to be examined with a magnifying optical system by way of the beam splitter, and an eye refracting system for electro-optically measuring the refractive power of the eye to be examined by projecting and receiving a light beam by way of the beam splitter.