Title:
【発明の名称】散乱光式煙感知器
Document Type and Number:
Japanese Patent JPS5855446
Kind Code:
B2
Abstract:
A light scattering type smoke detector effectively sensitive both to white and black smokes is provided. A wave length lambda of an incident light from a light source and a scattered light receiving angle theta defined by the direction of the incident light and the direction connecting between a smoke particle and a light receiving element are so determined as to satisfy lambda
Inventors:
ARAKI TSUNEHIKO
OKUDA YOSHIHIKO
OKUDA YOSHIHIKO
Application Number:
JP8679375A
Publication Date:
December 09, 1983
Filing Date:
July 15, 1975
Export Citation:
Assignee:
MATSUSHITA ELECTRIC WORKS LTD
International Classes:
G01N21/53; G08B17/10; G08B17/107; (IPC1-7): G01N21/53; G08B17/10
Attorney, Agent or Firm:
Ishida Choshichi