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:
Dec. 03, 2002
Filed:
Jul. 27, 2000
Applicant:
Inventors:
Suzanne K. Rajchel, Wheaton, IL (US);
Michael G. Ressl, Western Springs, IL (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01C 3/08 ;
U.S. Cl.
CPC ...
G01C 3/08 ;
Abstract
A reduced noise optical system is provided for use in measuring distance, range-finding and scanning. The system comprises at least one lens, at least one receiver operably positioned to receive a return beam of light reflected from an object and a limiting aperture operably aligned with the lens to limit the signal, and thus the noise, transmitted in the return beam.