| 摘要 |
PROBLEM TO BE SOLVED: To provide an infrared sensor which: has compact, thin and simple element geometry; and stably detects temperature of a measurement object even with temperature disturbance caused by external thermal emission (radiation) as well as thermal emission from a heat sensitive element and with temperature distribution at an installation location of a sensor element.SOLUTION: An infrared sensor 10 comprises: a sensor element 1 which detects infrared and outputs an electric signal; a connection terminal 4 to transmit the output of the sensor element to an external device; connection wiring 3 which electrically connects the sensor element and the connection terminal; and a sealing member 5 which seals the sensor element together with the connection terminal as well as the connection wiring except an opening for a light receiving surface. The sealing member has a holding section which holds the sensor element and a field angle restriction window 6 which is extended from the holding section so as to surround a periphery of the light receiving surface and thereby restricting a field range with respect to the infrared incident on the light receiving surface. The field angle restriction window has an inverse tapered shape where a width thereof gradually expands in a direction from an incident position of the infrared to the light receiving surface. |
