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:
Oct. 17, 1995
Filed:
May. 04, 1994
Duanfeng He, Ronkonkoma, NY (US);
Donald A Collins, Jr, Duluth, GA (US);
Daniel B Seevers, Duluth, GA (US);
Stephen J Ames, Lawrenceville, GA (US);
AT&T Global Information Solutions Company, Dayton, OH (US);
Abstract
An apparatus for sensing different attenuation windows within an optical scanner which adjusts the power level of a laser to a maximum safe power level. The apparatus includes an attenuation sensor which senses the amount of attenuation of the laser beam by a first attenuation window, and a laser power adjuster which changes the laser power level to an optimal but safe level based upon the sensed amount of attenuation of the laser beam. The apparatus may also include a detection circuit having a threshold detection level which is capable of being adjusted based upon the laser power level.