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:
Mar. 02, 1976
Filed:
Apr. 08, 1974
Frank J Ferrin, Wayzata, Hennepin, MN (US);
Honeywell Inc., Minneapolis, MN (US);
Abstract
Apparatus including discrimination circuitry for reliably identifying a target illuminated by a pulsed laser beam is disclosed. Laser energy received from objects within a field of view is imaged on one or more elements of an optical detector which produces electrical signals indicative of the direction of arrival of the laser energy. Signals from the detector are selectively passed to a display device by means of self-adaptive gating circuitry which blocks signals occuring during intervals when valid signals are not expected. Means for discriminating as to optical frequency, and for utilizing only the last returned reflection of each transmitted laser pulse is also disclosed for further increasing reliability.