Patent ID: 6236046
Filing Date: 2001-05-22
Classification: G01J,H01L

Abstract:
An infrared sensor comprising a container having an infrared incident window, a first infrared detecting element for infrared detection and disposed inside the container as supported by a supporting part of a substrate in opposition to the incident window, and a second infrared detecting element for temperature compensation and disposed inside the container with the infrared shielded by the supporting substrate of the first infrared detecting element from being incident on the second infrared detecting element, wherein the first and second infrared detecting elements include respectively a temperature sensing section, the temperature sensing section of at least the first infrared detecting element being supported in a non-contacting state with respect to the supporting part for the element, a temperature variation at the temperature sensing section of the first infrared detecting element is converted into an electric detection signal, and the temperature sensing section of the second infrared detecting element is substantially equalized in the heat capacity and heat conductance through ambient gas to the temperature sensing section of the first infrared detecting element.