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:
May. 25, 2021
Filed:
Aug. 16, 2019
Flir Systems, Inc., Wilsonville, OR (US);
Naseem Y. Aziz, Goleta, CA (US);
Brian B. Simolon, Santa Barbara, CA (US);
FLIR Systems, Inc., Wilsonville, OR (US);
Abstract
A bolometer circuit may include an active bolometer configured to receive external infrared (IR) radiation. The bolometer circuit may be configured to reduce power consumption at high temperatures. In particular, the bolometer circuit may include additional resistors provided in the resistive loads for bolometer conduction paths to limit power at high temperatures. In some embodiments, the bias (e.g., a voltage level) to the gates of transistors in the resistive loads for the bolometer conduction paths may be adjusted based on temperature to limit power and/or current at high temperatures. In bolometer circuits with a feedback resistor provided across an amplifier to configure a feedback amplifier, a circuit with adjustable amplifier power may be provided to save power. In some embodiments, a bolometer circuits may be provided with reduced gains to allow for very hot scenes to be imaged without railing the output.