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Patent Searching and Data


Title:
PYROELECTRIC TYPE INFRARED DETECTING DEVICE
Document Type and Number:
Japanese Patent JPH0321888
Kind Code:
A
Abstract:

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.


Inventors:
OGAWA KUNI
TAKAYAMA RYOICHI
NOMURA KOJI
TOMITA YOSHIHIRO
ASAYAMA JUNKO
Application Number:
JP15779689A
Publication Date:
January 30, 1991
Filing Date:
June 20, 1989
Export Citation:
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Assignee:
MATSUSHITA ELECTRIC IND CO LTD
International Classes:
G01V8/12; G01J1/02; G01J5/02; G01J5/34; (IPC1-7): G01J1/02; G01J5/02; G01V9/04
Attorney, Agent or Firm:
Shigetaka Awano (1 person outside)