Patent ID: 8969810
Filing Date: 2015-03-03
Classification: G01J

Abstract:
1. An infrared sensor device comprising: a plurality of infrared sensors that is provided in a plurality of divided areas in which an infrared-receiving area is radially divided in one plane; a detector that detects, for each divided area amongst the divided areas, presence or absence of movement of an object in the infrared-receiving area based on signals output from the plurality of infrared sensors; and a determiner that determines whether the object is in a detection area in a predetermined distance range from the infrared sensor, based on an arrangement pattern of the signals output from the infrared sensors, in an alignment of the divided areas in the infrared-receiving areas, wherein the determiner determines how distant a position occupied by the object is from the infrared sensor device based on the arrangement pattern of the signals output from the infrared sensors.