Patent ID: 9253418
Filing Date: 2016-02-02
CPC Classification: G01J,H04N

Claim Text:
1. An infrared image sensor for detecting infrared rays, the infrared image sensor comprising: a light-receiving unit including a pixel region in which a plurality of pixels are arranged and at least one reference pixel; a difference circuit for acquiring a first differential signal that is a differential signal between a signal of one pixel contained in the pixel region and a signal of the reference pixel and a second differential signal that is a differential signal between signals of two predetermined pixels out of the pixels contained in the pixel region; and a pixel signal calculating unit that calculates a signal of each of the pixels on the basis of the first differential signal and the second differential signal, wherein the two predetermined pixels are connected in series with respective first ends thereof connected to each other and also with respective second ends connected to different potentials, and the difference circuit acquires the second differential signal on the basis of a difference between a potential at the connecting point of the two predetermined pixels and a predetermined potential.