Patent ID: 6441372
Filing Date: 2002-08-27
Classification: G01J

Abstract:
An infrared focal plane array detector wherein a plurality of bolometer detectors are arranged in a two-dimensional array forming columns and rows on a substrate, and each of said plurality of bolometer detectors is successively selected to detect an infrared ray incoming to its position said plurality of bolometer detectors comprising:at least one first bolometer detector and at least one second bolometer detector and at least one third bolometer detector provided on said substrate, wherein said at least one first bolometer detector has, between said at least one first bolometer detector and said substrate, a thermal isolation structure, for thermally isolating said at least one first bolometer detector and said substrate from each other, said at least first bolometer detector being disposed in an infrared detection area on said substrate for receiving infrared rays incoming thereto; said at least one second bolometer detector has a thermal isolation structure, between said at least one second bolometer detector and said substrate, for thermally isolating said at least one second bolometer detector from said substrate, said at least one second bolometer detector receiving no infrared rays incoming to said infrared focal plane array detector; said at least one third bolometer detector is formed on said substrate without having a thermal isolation structure between said at least one third bolometer and said substrate; and said bolometer detectors forming a circuit for removing an offset in output signals therefrom and reducing a temperature drift thereof.