Patent ID: 8710443

Claim:
A pyroelectric detector comprising: a substrate; a support member including a first surface and a second surface opposite from the first surface; a spacer member connected to the substrate and supporting the support member so that a cavity part is formed between the substrate and the second surface of the support member; and a pyroelectric detecting element supported on the first surface of the support member, the pyroelectric detecting element including a first electrode mounted on the support member, a second electrode opposed to the first electrode, and a pyroelectric body arranged between the first and second electrodes, the support member including an insulating layer, a first wiring layer disposed on a side of the second surface of the support member with respect to the insulating layer, and a first plug passing through the insulating layer at a position where the pyroelectric body and the first wiring layer overlap in plan view to connect the first wiring layer with the first electrode.