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. 19, 1994
Filed:
Apr. 10, 1992
Applicant:
Inventors:
Tadmor Shalon, Brentwood, MO (US);
Marvin L Pund, Chesterfield, MO (US);
Assignee:
Metaphase Corporation, St. Louis, MO (US);
Primary Examiner:
Int. Cl.
CPC ...
G01B / ;
U.S. Cl.
CPC ...
356124 ; 356127 ;
Abstract
An automated lensometer including a mounting device to support and center a lens to be tested along an axis. First and second arrays of light source patterns are positioned at different optical distances from the mounted lens and are projected along the axis through the lens. The images of the projected patterns are captured and stored in a camera imaging device located along the axis. A comparison of the patterns by a processor allows derivation of refractive power of the lens.