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:
Apr. 25, 2000
Filed:
Jun. 24, 1997
Applicant:
Inventors:
Thomas J Brobst, Allentown, PA (US);
Edward I Chaleff, Doylestown, PA (US);
Kurt Hecht, Hartsville, PA (US);
Michael L Veksland, Marlton, NJ (US);
Albert Wurz, Doylestown, PA (US);
Assignee:
Accu-Sort Systems, Inc., Telford, PA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06K / ;
U.S. Cl.
CPC ...
23546236 ; 23546206 ; 23546222 ; 23546223 ; 23546237 ; 23547201 ; 250234 ;
Abstract
A focus changing apparatus for an optical scanner which increases the depth of the field of the optical scanner. The focus changing apparatus is optically located between a laser source and a scan mirror and includes a plurality of alternating curved and flat facets. Alternatively, a piezoelectric deformable mirror may be optically located between the laser source and a flat faceted scan mirror to provide for increased depth of field of the optical scanner.