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. 24, 2001
Filed:
Sep. 03, 1999
Applicant:
Inventor:
William B. Wetherell, Stoneham, MA (US);
Assignee:
Mars Incorporated, McLean, VA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01J 1/04 ;
U.S. Cl.
CPC ...
G01J 1/04 ;
Abstract
A document validation subassembly is described. The subassembly includes a light mixer for generating at least one substantially homogenous light spot. The light mixer includes a light mixing chamber, at least one input port for accommodating at least one light source, at least one output, and at least one collimator connected to the output. In an implementation, the light mixing chamber is substantially spherical, but other shapes, such as cylindrical chambers, are also contemplated. Also described are solid core light mixer implementations.