INFRARED DETECTOR

PROBLEM TO BE SOLVED: To provide an infrared detector having high sensitivity, capable of suppressing peeling-off of an optical filter film for an infrared ray at a manufacturing time, while securing airtightness. SOLUTION: This infrared detector includes: a package body 4 on which an infrared detection element 1 is mounted; a package lid 5 joined airtightly to the package body 4; a cap material 6 formed of a first inorganic material through which an infrared ray is transmitted, and arranged so as to block an opening part 5a of the package lid 5; and a lens 7 formed of a second inorganic material through which the infrared ray is transmitted, and arranged outside the package lid 5 on a separated position from the infrared detection element 1 more than the cap material 6. An optical filter film for the infrared ray is laminated on the lens 7, and the cap material 6 is joined airtightly to the package lid 5, and the lens 7 is joined to the package lid 5 by a conductive paste, to be thereby connected electrically to the package lid 5. COPYRIGHT: (C)2011,JPO&INPIT