LOW COST AND HIGH PERFORMANCE BOLOMETER CIRCUITRY AND METHODS

    公开(公告)号:US20170219436A1

    公开(公告)日:2017-08-03

    申请号:US15484989

    申请日:2017-04-11

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

    Abstract: A bolometer circuit may include an active bolometer configured to receive external infrared (IR) radiation and a resistive load, which are configured to be connected in series in a bolometer conduction path from a supply voltage node to a common voltage node. A node in the bolometer conduction path between the resistive load and the active bolometer is coupled to a first input of an op-amp. A variable voltage source is coupled to a second input of the op-amp to provide a reference voltage level. The op-amp maintains the reference voltage level at the first input to generate a current flow in response to a resistance change of the active bolometer due to the external IR radiation. The amplifier circuit may be configured as a feedback amplifier or an integrating amplifier. The bolometer circuit may be configured to enable a low-power mode of operation.

    INFRARED IMAGE ACQUISITION DEVICE AND INFRARED IMAGE ACQUISITION METHOD

    公开(公告)号:US20170176258A1

    公开(公告)日:2017-06-22

    申请号:US15452937

    申请日:2017-03-08

    Inventor: Junya KITAGAWA

    Abstract: Disclosed is an infrared image acquisition device capable of preventing a glare on a subject and acquiring an infrared image suitable for calculating the temperature of the subject. An infrared image acquisition device includes an infrared imaging unit, a corresponding area detection unit, a glare area detection unit, and an image correction unit. The infrared imaging unit acquires a first image and a second image having different imaging directions with respect to the subject. The corresponding area detection unit detects a first corresponding area and a second corresponding area corresponding to the subject in the first image and the second image. The glare area detection unit detects a first glare area where the first image has a larger amount of infrared rays than that of the second image, and a second glare area. The image correction unit corrects the first glare area based on the second glare area.

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