| 摘要 |
A pyroelectric detector (200) includes a pyroelectric detection element (220), a support member (210) and a support part (104). The pyroelectric detection element (220) has a capacitor (230) including a first electrode (234), a second electrode (236), and a pyroelectric body (232). The support member (210) includes first and second sides with the pyroelectric detection element (220) being mounted on the first side and at least one portion of the second side facing a cavity (102). The support part (104), the support member (210), and the pyroelectric detection element (220) are laminated in this order in a first direction with the cavity (102) being formed between the support part (104) and the support member (210). The support member (210) has at least a first insulation layer (212) on the first side contacting the first electrode (234), with the first insulation layer (212) having a hydrogen content rate smaller than a hydrogen content rate of a second insulation layer positioned further in a second direction than the first insulation layer (212), the second direction being opposite the first direction.
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