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:
Jun. 22, 2004
Filed:
Dec. 19, 2002
Steven Wayne Damron, Woodstock, GA (US);
Paul Oliver Detwiler, Lawrenceville, GA (US);
NCR Corporation, Dayton, OH (US);
Abstract
An improved detector assembly restricting light striking a detector within the assembly to a relatively narrow bandwidth and techniques for fabricating the same. A pliable material is impregnated with a coloring agent selected so that the material provides a filtering effect admitting light within a range including a predetermined wavelength, with the wavelength having a value based on a wavelength of a laser to be employed with the detector assembly. The pliable material is shaped so as form a capsule enclosing a detector, with the capsule including a hemispherical lens element as an integral part of the capsule. The hemispherical lens element is coated with a filter coating selected to provide a filtering effect complementary to that provided by the coloring agent, such that the combined filtering effects provided by the filter coating and the coloring agent provide a bandpass filtering effect.