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. 01, 1982
Filed:
Apr. 21, 1975
Applicant:
Inventor:
Victor A Misek, Hudson, NH (US);
Assignee:
Sanders Associates, Inc., Nashua, NH (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G02F / ; G01J / ;
U.S. Cl.
CPC ...
250225 ; 244-316 ; 343 / ; 3431 / ; 356364 ; 356369 ;
Abstract
A system for locating man-made specularly reflecting objects amongst non-specular surroundings such as foliage includes apparatus to initially project orthogonally polarized laser pulses towards a given area and to then detect returned laser pulses which are polarized, while rejecting randomly polarized radiation returned from non-specular objects. In one embodiment, specularly reflecting objects are detected by providing two detectors, each sensitive to light of a different polarization, and by differentially summing their outputs to reject randomly polarized incident light.