Patent ID: 6404397
Filing Date: 2002-06-11
Classification: G01V,H01Q

Abstract:
A system for providing information about a scene comprising:first means for receiving electromagnetic energy of a first wavelength from a scene and providing electromagnetic energy of a second wavelength in response thereto, said second wavelength shorter than said first wavelength, said first means including a lens having an index of refraction substantially greater than 1, said lens being transparent to electromagnetic energy of said first wavelength and said second wavelength, and second means for measuring variations of said electromagnetic energy of said second wavelength over a predetermined area and providing said information about said scene in response thereto, second means including: an array of patch antennas for receiving said electromagnetic energy of said second wavelength and feeding said electromagnetic energy of said second wavelength through apertures in a ground circuit and to a microstrip feed circuit, said microstrip feed circuit including a first line and a second line along which a first portion of said electromagnetic. energy of said second wavelength and a second portion of said electromagnetic energy of said second wavelength propagate, respectively, said first line being longer than said second line by a factor of &lgr;/2, where &lgr; is said second wavelength and a bolometer connected at a first end to said first line of said microstrip feed circuit and connected at a second end to said second line of said microstrip feed circuit.