| 摘要 |
<p>A small infrared sensor that can provide a wide infrared light-receiving area (viewing angle), and an infrared sensor having high electromagnetic shielding characteristics and having excellent electromagnetic-wave resistance characteristics are provided. Supporting portions 20 are disposed at four corners 8 of an opening 2a, whose shape is substantially rectangular in plan view, of a package 2. The supporting portions 20 support an optical filter 3, disposed so as to cover the opening 2a, at positions that are lower than an upper end 9 of an inner peripheral wall defining the opening 2a. While the optical filter 3 is supported by the supporting portions 20 as a result of inserting a portion 3c of a surface side of the optical filter 3 facing the supporting portions 20 into the opening 2a, the optical filter 3 is secured to the package 2. The optical filter 3 and the package 2 are joined and secured, and electrically connected to each other through a conductive adhesive 7. A peripheral area 2b defining the opening of the package 3 is formed lower than an outer-side area 2c thereof, and the peripheral area 2b cooperates with a side end 3b of a portion protruding from the upper end 9 of the inner peripheral wall defining the opening 2a of the optical filter 3, so as to form a holding recess 15 that holds the conductive adhesive 7.</p> |
