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. 25, 1978
Filed:
Jan. 04, 1977
Applicant:
Inventors:
Masane Suzuki, Omiya, JP;
Kiyoshi Suzuki, Omiya, JP;
Assignee:
Fuji Photo Optical Co., Ltd., Omiya, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01B / ;
U.S. Cl.
CPC ...
356169 ; 2502 / ; 350-65 ; 350285 ;
Abstract
A light beam is periodically chopped and then converted to a plane of light by a cylindrical lens. As the plane of light is chopped, it is caused to scan an object in the direction normal to the plane of the light to form a grating pattern on the object. The image of the grating formed on the object is superposed with a standard grating to obtain a moire pattern which represents the moire contour lines of the object.