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PYROELECTRIC SENSOR ARRAY AND PYROELECTRIC INFRARED DETECTION DEVICE

  • US 20130221220A1
  • Filed: 10/18/2011
  • Published: 08/29/2013
  • Est. Priority Date: 10/25/2010
  • Status: Active Grant
First Claim
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1. A pyroelectric sensor array attachable on a circuit board, the pyroelectric sensor array comprising:

  • a pyroelectric board having a connection surface configured to be placed on the circuit board; and

    a plurality of pyroelectric elements formed on the pyroelectric board, the pyroelectric elements containing a peripheral pyroelectric element arranged at a peripheral portion of the pyroelectric board in a predetermined arranging direction and a central pyroelectric element arranged at a central portion of the pyroelectric board, each of the pyroelectric elements having two adjacent connection electrodes formed on the connection surface, an electrostatic capacity between the two connection electrodes of the peripheral pyroelectric element being larger than an electrostatic capacity between the two connection electrodes of the central pyroelectric element.

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