Title:
PYRO-ELECTRICITY TYPE INFRARED DETECTOR
Document Type and Number:
Japanese Patent JPH05281035
Kind Code:
A
Abstract:
PURPOSE:To provide a usefull pyro-electricity type infrared detector which is capable of removing common-mode noise, having no detection dead space, and also detecting the travel direction of a moving body. CONSTITUTION:Four light-receiving elements 2 to 5 having the same shape, the same light-receiving area, the same light-receiving sensitivity are formed in a whirl on the surface of a pyro-electric raw material 1 so that they are 90 degrees out of phase with each other and symmetrical around the center O of rotation. The four light-receiving elements 2 to 5 are grouped into two pairs I, II of dual elements, and outputs are adapted to be taken out from the respective dual elements I, II.
Inventors:
Toshiyuki Misaya
Shuji Takada
Kazutaka Okamoto
Koichi Matsumoto
Shuji Takada
Kazutaka Okamoto
Koichi Matsumoto
Application Number:
JP10373092A
Publication Date:
October 29, 1993
Filing Date:
March 30, 1992
Export Citation:
Assignee:
HORIBA, Ltd.
International Classes:
G01J1/02; G01J5/02; G01J5/34; (IPC1-7): G01J1/02; G01J5/02
Attorney, Agent or Firm:
Hideo Fujimoto