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:
Oct. 11, 1983
Filed:
Nov. 05, 1980
Applicant:
Inventors:
Shinji Wada, Tokyo, JP;
Yoshinori Oana, Tokyo, JP;
Ikuo Kitao, Tokyo, JP;
Yasuo Kato, Tokyo, JP;
Taketoshi Ishihara, Tokyo, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61B / ;
U.S. Cl.
CPC ...
351211 ; 351214 ;
Abstract
A refractory power measuring device for measuring the refractory power of the human eye or a lens. The device includes a target projecting optical system having two optical elements which are movable along the optical axis of the system independently from each other. The device can measure simultaneously the refractory powers along two astigmatic axes.