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. 06, 1987
Filed:
Jan. 23, 1987
Applicant:
Inventors:
Toru Tojo, Kanagawa, JP;
Mitsuo Tabata, Yokohama, JP;
Assignee:
Kabushiki Kaishi Toshiba, Kawasaki, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
250561 ; 356-1 ;
Abstract
A device for measuring the position of an object has a light radiation mechanism for causing light to be obliquely incident on a surface of the object, a vibrating mechanism for vibrating the light incident on the surface of the object at a predetermined frequency, and a detecting mechanism for detecting light reflected by the surface of the object, generating a detection signal, and obtaining the position of the object in accordance with the detection signal.