公开(公告)号：US20170211984A1

公开(公告)日：2017-07-27

申请号：US15483655

申请日：2017-04-10

Applicant: FLIR Systems, Inc.

Inventor： Brian B. Simolon ,  Naseem Y. Aziz ,  Nicholas Högasten

IPC: G01J5/24

CPC classification number: G01J5/24 ,  G01J1/44 ,  G01J2005/0077 ,  G01J2005/202

Abstract: Various techniques are disclosed for bolometer circuits and related methods for thermal imaging in a difference domain, where each pixel value represents a difference in incident IR radiation intensity between adjacent bolometers. For example, a bolometer circuit may include an array of bolometers each configured to generate a pixel signal in response to a bias and incident infrared radiation. Each column of the bolometer array may comprise an amplifier, a first plurality of switches each configured to selectively provide a supply voltage to a respective one of bolometers of the each column, a second plurality of switches each configured to selectively route a difference of the pixel signals of a respective adjacent pair of the bolometers of the each column to an input of the amplifier, and a third plurality of switches configured to selectively provide a common voltage to a respective one of the bolometers of the each column.