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:
Nov. 30, 1993
Filed:
Jan. 21, 1993
William C Long, Houston, TX (US);
ESM International, Inc., Houston, TX (US);
Abstract
A background for an electro-optical sorting machine viewing station where fungible products pass during the sorting operation and are distinguished by being standard or substandard in one or more spectral ranges comprises a translucent light diffuser or frosted light diffuser and one or more variable intensity lamps for changing the color or hue quality in the spectral ranges. A bichromatic machine is equipped with two lamps, one for each spectral range, preferably orthogonally aligned to each other for beam splitting operation in conjunction with an optical beamsplitter, that separates the longer spectral range wavelengths from the shorter spectral range wavelengths.