| US 7,531,800 B2 | ||
| Infrared detection element | ||
| Yoshimi Ohta, Yokohama (Japan); and Masaki Hirota, Zushi (Japan) | ||
| Assigned to Nissan Motor Co., Ltd., Yokohama (Japan) | ||
| Filed on Jan. 09, 2007, as Appl. No. 11/651,054. | ||
| Claims priority of application No. 2006-004401 (JP), filed on Jan. 12, 2006. | ||
| Prior Publication US 2007/0158570 A1, Jul. 12, 2007 | ||
| Int. Cl. G01J 5/00 (2006.01) | ||
| U.S. Cl. 250—338.1 | 13 Claims |
| 1. An infrared detection element comprising:
a substrate structure having a substrate portion and a frame portion;
a light receiver configured and arranged to receive infrared rays, the light receiver having a peripheral edge around which
the frame portion is at least partially disposed;
at least one beam having one end fixed to the frame portion and another end fixed to the light receiver to support the light
receiver above the substrate structure, such that the light receiver is disposed higher than the frame portion relative to
a thickness direction of the substrate structure; and
at least one protuberance being provided on at least one of the frame portion, the light receiver and the beam with the at
least one protuberance protruding in a direction transverse to the thickness direction of the substrate structure to limit
direct contact between any two of the beam, the light receiver and the frame portion during bending of the beam, except at
the at least one protuberance.
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