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:
Aug. 06, 1985
Filed:
Jul. 20, 1984
Applicant:
Inventor:
Yasuyuki Ishikawa, Kawaguchi, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61B / ; A61B / ;
U.S. Cl.
CPC ...
351206 ; 351211 ; 351237 ; 3502 / ;
Abstract
An eye examining instrument comprises examining means disposed to project an examining light to and receive the light from the eye of a person to be examined; a casing for encasing said examining means; a beam splitter disposed on the outside of said casing for directing the examining light to the eye to be examined, said beam splitter having sufficient width to allow both eyes of the person to be examined to see a fixation object and being directly opposed to the eye to be examined; and a cover connected with said casing for preventing any undesirable light from coming into said beam splitter.