PURPOSE: To improve space resolution characteristics by scanning an infrared-ray image in order by X-axial movement on a pyroelectric element array where unit pyroelectric elements are arranged electrically in series in an X-axial and a Y-axial direction so that adjacent elements generate counter electromotive forces.
CONSTITUTION: The 8×8 unit pyroelectric elements which are arranged in X-Y matrix constitute two blocks of 4×8 unit pyroelectric elements which are symmetrical in the X-axial direction about an upper ground electrode 4 formed in the Y-axial direction at the center part of the matrix. Four X-axial unit pyroelectric elements are arranged alternately in the patterns of electrodes 2 and 3 and unit pyroelectric elements which are arranged in array are connected electrically in series. Eight pyroelectric element arrays are provided in the Y-axial direction. The lengths in the X-axial and Y-axial directions are equalized to the length of the unit pyroelectric elements and an optical unit 5 which has an opening part is provided in each block. Then the X-axial movement is performed on the front surface of the pyroelectric element array to scan the incident infrared-ray image and voltages developed between signal lead-out electrodes 6 and 7 and electrode 4 are supplied as output signals to a signal processing circuit.
TAKAYAMA RYOICHI
NOMURA KOJI
TOMITA YOSHIHIRO
ASAYAMA JUNKO
